$37 Find Cheap Flights to Castro Valley

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Castro Valley departing on 3/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap Flight Deals to Castro Valley

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to Castro Valley that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals to Castro Valley

Recommended round-trip deals departing in the coming months from the most popular airlines that fly to Castro Valley.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:10 am - 8:44 amLAX-SFO
1h 34mnonstop
6:00 am - 7:30 amSFO-LAX
1h 30mnonstop
$71Hawaiian Airlines
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Thu, Apr 3 - Mon, Apr 7
6:00 am - 7:33 amLAX-SFO
1h 33mnonstop
6:00 am - 7:30 amSFO-LAX
1h 30mnonstop
$76Hawaiian Airlines
Find Deal
Wed, Apr 2 - Fri, Apr 11
1:04 pm - 2:40 pmLAX-SFO
1h 36mnonstop
3:35 pm - 5:07 pmSFO-LAX
1h 32mnonstop
$77Frontier
Find Deal
Fri, Mar 21 - Mon, Mar 31
8:36 am - 10:12 amLAX-SFO
1h 36mnonstop
3:30 pm - 5:02 pmSFO-LAX
1h 32mnonstop
$78Frontier
Find Deal
Thu, Mar 13 - Fri, Mar 14
6:30 am - 7:52 amLAX-SFO
1h 22mnonstop
6:10 am - 7:40 amSFO-LAX
1h 30mnonstop
$91Delta
Find Deal
Tue, Apr 15 - Thu, Apr 17
10:20 pm - 11:44 pmLAX-SFO
1h 24mnonstop
4:04 pm - 5:34 pmSFO-LAX
1h 30mnonstop
$92Delta
Find Deal
Thu, Apr 3 - Mon, Apr 7
5:15 am - 7:27 amSEA-SFO
2h 12mnonstop
10:35 pm - 12:58 amSFO-SEA
2h 23mnonstop
$139United Airlines
Find Deal
Thu, Apr 10 - Mon, Apr 14
2:50 pm - 5:08 pmSEA-SFO
2h 18mnonstop
6:00 am - 8:27 amSFO-SEA
2h 27mnonstop
$142United Airlines
Find Deal
Tue, Mar 25 - Thu, Mar 27
3:15 pm - 4:58 pmLAX-SFO
1h 43mnonstop
11:00 am - 12:39 pmSFO-LAX
1h 39mnonstop
$144American Airlines
Find Deal
Tue, Apr 1 - Mon, Sep 1
1:03 pm - 11:58 pmLAX-SFO
10h 55m1 stop
6:31 am - 8:05 amSFO-LAX
1h 34mnonstop
$149American Airlines
Find Deal
Sat, Apr 12 - Thu, Apr 17

Good to know - Book Cheap Castro Valley Plane Tickets

Low season

January

High season

May

Cheapest flight

$37
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Los Angeles to San Francisco

Flights to Castro Valley: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew to Castro Valley 
HartajFlew with United AirlinesRDU-SFODec 2024
RDU long-term parking can add 30-70 mins to your departure time. At terminal 2 in RDU, getting a taxi can take 2-5 mins, vs. waiting 10-30 mins for a car app pickup. :)
Verified travelerFlew with Alaska AirlinesDCA-SFOJan 2025
Bring your own entertainment. Depend on them for reliability and your flight to get you there on time if not early.
Verified travelerFlew with Alaska AirlinesLAX-SFOJan 2025
Bring water and snacks with shorter flights as some routes will not offer it.
Verified travelerFlew with Hawaiian AirlinesOGG-SFODec 2024
Hawaiian was nice with the snacks and punch. More friendly than united.
Verified travelerFlew with Alaska AirlinesDCA-SFOJan 2025
Reserve your plane seat & bring something to eat in the plane.
MatthewFlew with Alaska AirlinesMCO-SFODec 2024
I had selected the filter to include flights with 1 checked bag, but it appears this flight did not actually include a checked bag in the flight.
GeraldFlew with Hawaiian AirlinesHNL-SFOFeb 2025
There is an agricultural inspection of carryon bags at the gate. Don’t try and bring home any pineapples.
Verified travelerFlew with IberiaORD-SFOOct 2024
Use Alaska Airlines. Great attention to detail. The staff is connected with the passengers and they anticipate what we will need , especially when traveling with wheelchair passengers
JulieFlew with Alaska AirlinesJFK-SFOOct 2024
Leave early. JFK can be messy. I couldn’t find healthy food choices so eat before you arrive.
Verified travelerFlew with Royal JordanianJFK-SFOSep 2024
AA have the best boarding and fast service. Leaving and landing in time. 😀
Verified travelerFlew with FrontierLAX-SFOOct 2024
Try to catch bargain flights with more reliable airlines
Verified travelerFlew with Alaska AirlinesMCO-SFONov 2024
Use their app, it’s great & they notify boarding, etc
CongFlew with United AirlinesSNA-SFONov 2024
Nothing really, being clothes that are easily taken off like shoes at the security will always save time
Verified travelerFlew with Alaska AirlinesJFK-SFOJun 2024
SFO is one of the most convenient and pleasant airports. When flying Alaska Air make sure to bring your food and a larger water bottle that usual (you get only two drink services (one small cup each) for a 6 hour flight.
AndrewFlew with Alaska AirlinesHNL-SFOJun 2024
Fly Hawaiian Airlines instead to/from Hawaii if you can. (Cross fingers that Hawaiian Airlines does not end up merging with Alaska Airlines as has been announced.)
PaulaFlew with Alaska AirlinesBOS-SFOJul 2024
Get your boarding pass online and save it to your wallet App on the iPhone. Makes it so easy
NoamFlew with Alaska AirlinesIAD-SFOAug 2024
Flying to the Ronald Reagan airport is closer and faster to D.C. than the Dulles airport.
Verified travelerFlew with Alaska AirlinesJFK-SFOJul 2024
provide crew with more training on how to offer help to passengers
Verified travelerFlew with Alaska AirlinesIAD-SFOJul 2024
I would recommend Alaska Airlines. The amenities and comfort was great.
SoniaFlew with American AirlinesDFW-SFOAug 2024
Leave at least 1.5 hours between flights as Dallas is HUGE!
MichaelFlew with American AirlinesPHX-SFOJun 2024
Upgraded - so everything went smooth, comfortable seats, nice attention from staff
Verified travelerFlew with Alaska AirlinesPAE-SFOAug 2024
Everett is a lovely airport to travel from
JulieFlew with Alaska AirlinesSEA-SFOAug 2024
Please make sure you at least change your clothes if you are flying right after a sporting event where you participated. Don’t be stinky.
VyomaFlew with Alaska AirlinesSAN-SFOJun 2024
Be sure to read the signs, i have heard it's confusing for connecting flights if you don't follow the directions.
Verified travelerFlew with Alaska AirlinesLAX-SFOJul 2024
Bring a sweater, just incase other people's ac makes you cool.
CherrylynFlew with Alaska AirlinesMCO-SFOAug 2024
Be on time and check the parking space
Verified travelerFlew with Alaska AirlinesPDX-SFOJun 2024
Don’t fly Frontier. They refuse customer assistance and scam people on checking bags.
Verified travelerFlew with Alaska AirlinesSAN-SFOApr 2024
Be careful, when you book your flights to choose the right airline.
FainaFlew with Alaska AirlinesJFK-SFOMar 2024
It would be nice to have TV with long flight
Verified travelerFlew with Alaska AirlinesBOS-SFOMar 2024
Long flight duration. Because of weather it took 8 hrs to get there . On my way back it was smooth and short
Verified travelerFlew with Alaska AirlinesJFK-SFOMay 2024
The airport food was limited and expensive. Best to bring a sandwich from outside…
ShengFlew with United AirlinesFLL-SFOMay 2024
Arrive early for morning flight. Airport had really long lines!
AnnetteFlew with United AirlinesPHX-SFOJan 2024
United has the options for business folks needing earlier flights. Alaska has better flight attendants.
LarryFlew with DeltaATL-SFODec 2023
Get there early. The TSA security line is very long.
Verified travelerFlew with Alaska AirlinesSNA-SFOFeb 2024
Long Beach and SNA are convenient airports for flying out of Orange County. I wish I knew about the size of the plane which caused a fee for checking one small bag that normally was a carry on for other airlines such as SouthWest.
Verified travelerFlew with Alaska AirlinesPDX-SFOJan 2024
Go first class or choose another airline. At least I will.

FAQs - booking Castro Valley flights

  • How long is the flight to Castro Valley?

    Flights from San Diego1h 42m
    Flights from New York6h 11m
    Flights from Portland1h 50m
    Flights from Boston6h 15m
    Flights from Los Angeles1h 32m
  • What is the cheapest flight to San Francisco?

    In the last 3 days, the cheapest flight deal to San Francisco was found on the route from Los Angeles, at $71 return. The most popular connection is from Boston to San Francisco and KAYAK users have found round-trip deals for as low as $210 in the last 3 days.

  • Which airlines fly to San Francisco?

    Many airlines fly to San Francisco, the most common ones being United Airlines, Alaska Airlines, and Delta. See the amount of flights per week for popular airlines flying to San Francisco.

  • How to fly to Castro Valley?

    You cannot fly directly to Castro Valley. KAYAK recommends you fly to San Francisco (SFO) (16.72 miles from Castro Valley). From there you can rent a car or get a taxi.

  • What airports are near Castro Valley?

    The closest airport is Oakland (OAK) (7.36 mi). Other nearby airports are San Francisco (SFO) (16.72 mi) or San Jose (SJC) (24.51 mi). KAYAK recommends you fly to San Francisco.

  • How far is San Francisco Airport from central San Francisco?

    There are 12 miles between San Francisco city center and San Francisco Airport.

  • What is the name of San Francisco’s airport?

    All flights to San Francisco land at San Francisco Airport. The airport code is SFO,and it can also be referred to as San Francisco or San Francisco Intl.

  • How does KAYAK find such low prices on flights to Castro Valley?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Castro Valley.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Castro Valley?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Castro Valley is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Castro Valley?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Castro Valley with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Castro Valley?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Castro Valley up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Castro Valley

  • There is no major airport in Castro Valley. It is instead served by San Francisco Airport.
  • Looking for cheap airfare to Castro Valley? 25% of our users found round-trip tickets to Castro Valley for the following prices or less: From Los Angeles $495, from Boston $723, from Miami $835
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly from the United States is September.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Castro Valley flight deals.
See more tips

Top 5 airlines flying to Castro Valley

Need help choosing which airline to fly with from the United States to Castro Valley? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9717 reviews
7.1Food
8.5Crew
7.1Entertainment
7.9Comfort
8.2Boarding
Airline reviews

The registration was chaotic. The kiosks didn't work for most people, and most had to do registration and receive boarding slips with a person. It took about an hour to get through he process, and I was worrying that I will be late to the flight. However, the personnel was great - courteous, professional, and was able to work through the problems.

8.0 ExcellentOksana, Feb 2025GEG - SAN
Read more Alaska Airlines reviews

The registration was chaotic. The kiosks didn't work for most people, and most had to do registration and receive boarding slips with a person. It took about an hour to get through he process, and I was worrying that I will be late to the flight. However, the personnel was great - courteous, professional, and was able to work through the problems.

I upgraded my seat and the service and boarding were wonderful. My flight attendant was very helpful when I experienced nausea on the flight (a first time experience). Flight arrived early which was nice. The only negative was many airlines have screens to provide some on flight entertainment, this aircraft did not. I had planned to read and listen to an audiobook on my flights, so no big deal on my part. The USB plug ins were broken on both my seat and the center seat, so I was not able to charge my phone during the flight, I will add 2 of the three USBs were broken on ride from San Diego as well. I would attribute this to the design, it is a very awkward angle to plug in, so frequent and perhaps not so gentle attempts to plug in have caused them to break.

Alaska no longer allows customers to print boarding passes at the airport. They only use mobile phones for boarding passes. Try getting on an Alaska plane with a dead phone and no boarding pass! Great customer service Alaska!

Stay with what you are doing. Excellent service and ahead of schedule. Well done.

We had to cancel and we’re treated fairly with 100%refund quickly

The flight itself was okay, but there were 2 screaming kids in front of me my entire flight which made it just awful. The parent did zero to try and make the children settle down and flight attendants did nothing either. I understand it's hard to travel with children, but constantly yelling, screaming, or loud talking for 4 hours straight is just ridiculous.

There was an issue with water that led to us not having potable water onboard. They dumped the onboard water and we were two hours late taking off.

All good. Great food and entertainment when there isn’t any on a one hour flight

Boarding for Alaska Airlines is always chaotic with many people crowding the gates. Arriving in on Alaska in Los Angeles is always interesting since there is never a gate available. So the planes are often parked all the way out on the west side of the airport while waiting for the gate to be cleared of the departing plane. This flight was no exception.

Flight was delayed twice, I was forced to check my bag, and the only offered water or apple juice on the flight

Seats are much much more comfortable than United, which is what I usually fly

If I pay extra for "comfort+" I expect leg room where I can stretch my legs. I was seated with an attendant's seat blocking my feet. Knee space was fine but my feet had less room than the non-"comfort+" seats. Also, don't go cheap on food when you have flights of 3+ hours. It's insulting.

Only one side of the heafphone jack work. Crew was friendly and helpful.

Great. Flight departed early and arrived early. Deplaning and baggage claim ww were quick.

They separated our seats and moved us to the back of the plane. Hundreds of dollars and thousands of miles used and this was my platinum member experience.

AC barely worked on a 50 minute flight. It was very warm the whole flight. Flight was very bumpy and hard landing.

Got on the plane and then needed to deboard the plane because they didn’t have any pilots?

The flight was canceled two hours before departure, it took over five hours to rebook us on another flight.

Rough day of travel all the way around. Wrong info given to us multiple times and mistakes in their booking making our trip 10 hours longer than planned. I’m bummed because I fly Delta all the time and love them. Mistakes happen. Just bummed that this was a rare trip our whole family was traveling together.

Meh. A late flight meant I missed my connections, and a 2pm LAX arrival turned into gettin in after midnight.

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

Fantastic crew. Flight was delayed at last minute but we were given updates every 20 minutes and the crew was so friendly and considerate. I miss the touch screens on the back of the seats, wish they would bring that back though.

Awful. Worst airline I have ever been on. Crew were among the rudest people I have ever dealt with. United staff members were rude and disrespectful. My flight was delayed, causing me to miss a connecting flight. I understand things happen, but when staff start lying about what actually happened, that is when I have an issue. Just be honest, really it isn’t that hard. I’m being very honest with this review and I don’t find this difficult what so ever. In fact, because of United Airlines, my Christmas holiday was off to a really rocky start. As someone who has traveled across the world, it has only been United that I have had a truly awful experience.

Boarding always seems a bit chaotic. Seat spacing could leave more for leg room.

Good flight. On time. Boarding and seating was easy. Crew were really friendly, yet professional. Bathroom (by cockpit) was small but serviceable. Some the seats were showing some notable wear & tear, but were comfy. Very happy UA customer. TY! 🤛🏽💗

We arrived early and finally made it to our gate almost an hour after.

We were delayed 3x and because I didn’t purchase my tickets directly from United Airlines I was told I Have to take care of it myself so I called Underpricer and they helped me but before I changed my flights I took the risk of sticking by what my tickets were and was lucky to have gotten on the original all flight with only 15 mins before take off. not sure if I will do this again

Everything good until we waited for jet bridge at SFO. Then pilot gets on speaker & said it won’t reach plane- too short, need to go to different gate. Then 5 min later, adjusted plane/jetbridge & all ok?!?

Was a pain having to leave the plane and reboard but glad the plane was fixed

Bigger seats. Board back to front! Disembark front to back!

Extraordinary service in business class, and very good breakfast and snacks. A really lovely flight.

This flight didn’t happen because AA agents didn’t let us board the flight

Plane was pretty clean, staff was friendly and helpful, flight left about on time arrived early. Took a long time to board and get off the plane - carry on items didn't have enough room so people had to move all around to find places.

The service and food needs to improve to catch up with other international flights

Would have been good to have a meal since it was a 5.5 hour flight

We boarded after several delays due to mechanical failure and a gate change. The seat cushion in the exit row was very compressed and offered no cushion, making the four-hour journey reasonably uncomfortable. The WiFi worked for a few people, but for most, it did not, and you cannot get entertainment unless you can connect—American Airlines flights do not have seatback screens, and you must use your mobile phone.

AA is always pretty solid. Was on time all the way around today so can’t complain!

My boarding pass wouldn't pull up in the app very easily and had to really dig through my email. That caused a delay in TSA..

RE Food: Wish there was a choice for No Rating. Flew from Honolulu to Los Angeles on a Red-Eye flight (11:00 pm to 7:30 am). Other than a package of cookies with a beverage choice offered soon after take-off, and a beverage choice shortly before landing, no other food choices were offered. Everyone slept or rested for most of the trip. Nothing to rate. RE Entertainment: Everyone was sleeping most of the flight. Only saw one passenger watch about 30 minutes of entertainment on his iPad. I never attempted to access any entertainment options.

Better to put road truck seat in plain it so uncomfortable can not adjustable and fill metal don’t have cushions at all it’s very hard to travel for five hours

Since they are a budget airline, I wasn’t expecting too much but they did some things well. They were on time, the plane was clean, boarding was fairly straightforward and the staff was cheerful and friendly. The only downside was comfort. The seats were fairly hard and after a 2 hour flight your rear end is not feeling so great. Maybe a little more cushion in the seats, Frontier!

They cancelled the flight and did nothing. I should be compensated for my uber rides to and from airport. Not a good service by frontier or kayak.

No frills for sure. No gate announcements about flight delay, not even water to drink on the flight.

food not having to pay for it, reclining seat would be nice, more leg room, HEAT!!!!!!!

An absolutely fraudulent experience. Extremely unprofessional. Terrible in all ways possible. Rude staff, flight attendants, and deceptive "policies."

The worst service , the agents from the counter are really bad . Poor customer service . They didnt help me to get in the flight . I was on line when they close the flight without telling and I couldn’t board the plane . I will like to get my money back ey back because it was their fault. Really bad management , bad manners, bad additud

The check in process was a mess for no reason. I spent an hour waiting in line trying to get them to print my boarding pass and as a result I missed my flight.

The airline used deceptive tactics to charge us more for our trip. Search Frontier Class Action Lawsuit to find out more or read the hundreds of reviews that have nearly identical stories.. don't fly this airline.. you've been warned.

Check in at Philadelphia international was absolutely terrible! I fly 2 to 3 times a month and avoid frontier at all cost and will never fly Frontier again! The night before travel, I tried checking in however, the app was giving me an error, so I went to the desktop, which instructed you that you need to use the app. The next day I presented at the check-in gate after trying at least a half dozen times prior to getting into the airport and continuing to getting the error in the app. I actually had rebooted my phone numerous times and reinstall the app just in case. My phone is only one generation older than the current model. It has no problems completing a frontier flight purchase or any other app issues. There was only three frontier employees working at check-in and a huge line while I was in line I continued to try and check in via the app. As I approach the desk, I was dreading dealing with the agent. He was extremely unprofessional, anti-semantic & very ignorant, and mean to the people in front of me, as well as the people who ended up being behind me. He literally told people “Man I don’t care bout y’all” in his native dialect! Maintaining my composure I approached and explained the situation. To which he replied, you’re gonna have to pay then! I don’t understand. It’s an issue with their app not allowing me to check in! Not my issue! He told me if I pay cash it would be $15, $25 if I pay credit card. I don’t understand a $10 difference for paying with a credit card? I am completely cashless so I continued to try using the app to avoid the $25 fee, Which I still don’t believe that I should be responsible for since it was Frontier’s technical issue!!! I continued to check in via the app a couple more times after he verified I was doing everything right he proceeded to continue to belittle the people behind me. Yelling at them saying I don’t care about you people! I cannot believe that this is the way that businesses would treat its customers! Unfortunately, the black mail with dreadlocks did not have a name tag all he had was a frontier sweater on! For the $25 fee that I ended up getting charged on my credit card. I should’ve just booked originally with Spirit or any other carrier! I have no problem paying fees that I should be responsible for, but when it’s due to a technical failure of a company, the customer should not be responsible for it! I cannot believe that it’s not frontier going out of business!

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