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Find deals on flights from Ontario from $49

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Anywhere departing on 7/21. 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.
1 adult
0 bags
Sat 7/6
Sat 7/13

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Where can I fly from Ontario?

Prices from ONT, departing Sat 7/6 and returning Sat 7/13

Flights from Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from Ontario to help you find the cheapest flights, the best time to fly and much more.

Which are the most popular places to fly to from Ontario?

The domestic destinations KAYAK users have most searched for when searching for flights from Ontario.
Based on KAYAK flight searches, the most popular place to fly from Ontario is New York (15% of total searches). The next most popular destinations are Seattle/Tacoma Intl (10%) and Dallas (6%).

What are the most popular international flights out of Ontario?

The international destinations KAYAK users have most searched for when searching for flights from Ontario.
There are many international destinations you can fly to from Ontario. The most popular international destinations among KAYAK users are Bangkok, Mexico City and San Salvador.

What are the most popular countries to fly to from Ontario?

The most popular countries KAYAK users have searched for from Ontario along with the average price for the route clicked by KAYAK users in the last 2 weeks.
Based on KAYAK flight searches, the most countries to fly to from Ontario is United States (89% of total searches). The next most popular destinations are Taiwan (7%) and El Salvador (3%).

Which cities can I fly to direct from Ontario?

There are loads of places you can fly direct to from Ontario. The most popular destinations for direct flights among KAYAK users are Phoenix, Portland, Honolulu, El Paso and Salt Lake City. On average, the cheapest of these destinations on KAYAK over the last 2 weeks for a return flight was Phoenix at $74, while the most expensive was Honolulu, at $251.

Which international cities can I fly to direct from Ontario?

There are many international destinations you can fly to non-stop from Ontario. The most popular international destinations from KAYAK users are Taipei City, Guadalajara and San Salvador. On average, the cheapest of these destinations on KAYAK over the last 2 weeks for a return flight was San Salvador at $205, while the most expensive was Taipei City, at $733.

What is the longest direct flight from Ontario?

The longest direct flight you can take from Ontario is to Taipei City Taiwan Taoyuan Intl Airport, with a duration of 14h 05m. The next longest is Honolulu at 6h 00m, followed by a flight to New York at 5h 23m.

Good to know

Low season

February

High season

May

Cheapest flight

$49
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Ontario to Dallas/Fort Worth Airport

FAQs for booking flights out of Ontario

  • Do flights from Ontario via Ontario International Airport (ONT) consider persons with reduced mobility?

    Special needs passengers, such as those with restricted mobility or impaired vision, will find it easier to fly from Ontario via ONT. To assist these passengers, all airlines have workers stationed throughout the airport. Anyone who requires special airport services should make their request while making their travel arrangements.

  • Can I park my car at Ontario International Airport?

    Different types of parking indicate the probability of parking your car at the airport. If you've arrived at the airport and have a to-and-fro flight from Ontario, consider parking your car at private, public, or valet parking lots with a surcharge both for short and long parking.

  • Are there nursing rooms at Ontario International Airport?

    Lactating mothers are much considered on flights from Ontario via ONT, for it features two nursing rooms for them. One of these nursing rooms is situated in Terminal 2 on the second floor past the TSA screening across from gate 204, next to the women's restroom. The other one is at Terminal 4 on the second floor across from gate 407, next to the family restroom.

  • Which airlines have lounges at Ontario International Airport in Ontario?

    Consider using the Aspire Lounge in Terminal 2, open to guests traveling with United, Alaska, Frontier, and Delta airlines. The lounge provides unparalleled airfield views, excellent food, and comfortable seating to work or relax.

  • What is Ontario also known as?

    Ontario Airport’s airport code is ONT. It can also be referred to as Ontario, Ontario Intl.

  • How does KAYAK find such low prices on flights from Ontario?

    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 from Ontario.

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

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

  • What is the Hacker Fare option on flights from Ontario?

    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 your destination with an airline and back to Ontario with another airline.

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

    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 from Ontario 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 a cheap flight out of Ontario

  • Looking for a cheap flight? 25% of our users found tickets from Ontario to the following destinations at these prices or less: Denver $93 one-way - $162 round-trip; Dallas $148 one-way - $335 round-trip; Seattle $94 one-way - $127 round-trip
  • Morning departure is around 7% cheaper than an evening flight, on average*.
  • Flights from Ontario depart from Ontario International Airport (ONT). Most passengers use Ontario International Airport from Ontario to Mexico and Las Vegas.
  • It would take you approximately 5 minutes to cover the 3 miles connecting the Ontario city center to Ontario International Airport. If you are in a hurry, consider using a private means of transport such as a taxi, Uber, or car rental. A bus or a train is an alternative means of transport if you are not in a hurry to catch your flight.
  • Travelers with the earliest flight from the airport should consider staying in one of the hotels close to it. For instance, you can book a room at Holiday Inn Ontario Airport. This hotel is a 3-minute walk to ONT and provides a complimentary airport shuttle to its guests who are connecting to the airport for a flight and have pieces of luggage.
  • Never leave your pet behind if you have a flight from Ontario through Ontario International Airport. The airport considers animals by building several pet relief areas inside and outside. These areas are close to gates 210 in Terminal 2 and 410 in Terminal 4. The outside pet relief area is located at the end of the terminal building.
  • Everyone understands how stressful it is to travel with children on long vacations. JetBlue Airlines is a good option if you are flying with children from Ontario. This airline provides kid-friendly amenities such as video games, subscribed cartoon channels, plane toys, and free refreshments to keep kids entertained during the flight. This airline's planes boast big, pleasant seats with ample legroom, making it ideal for parents with children on their laps.
See more tips
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Ontario to Anywhere

Need help choosing which airline to fly with from Ontario to Anywhere? 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.
8.2
China AirlinesOverall score based on 882 reviews
7.8Food
8.6Crew
8.1Entertainment
8.0Comfort
8.3Boarding
Airline reviews

Very good , the weather was terrible, but i admired the professionality and politeness and care from the crew, and the excellent contition of the plane

10.0 Excellentfr Jonah, Apr 2024HKG - TPE
Read more about China Airlines reviews

Very good , the weather was terrible, but i admired the professionality and politeness and care from the crew, and the excellent contition of the plane

My flight to Los Angeles was canceled Had to book another flight and you charged me extra $500 Very bad experience

Comfort was left wanting due to such a long flight, made the wife and I wish we could upgrade the seats to Business class or First Class, but did not have that option. Food was good but had very limited options and I have a dietary restriction which was difficult for the staff to accommodate since everything provided came with cheese on it. (Cheese could potentially kill me) Did not have an option to inform the staff until we were already in the air about the restriction and was not provided another option before flight departed.

It was a 2 hour flight to Taiwan. Lunch was served. China Airlines goes above and beyond for their passengers.

They were helpful, considerate with asking us for standby preboarding with our infant, gave us toys and excellent service onboard. They were always on time, even early boarding once! All our luggage arrived intact, and they even brought our baby car seat to oversized for us. We love China Airlines!

Staff is friendly, great variety of entertainment, check in a little messy but due to people not listening. Overall a pleasant experience. Would use again in the future.

It felt like a new plane. Decent leg room in economy, food was fine, and the plane didn’t feel super dry and uncomfortable.

Free Wi-Fi could have been better in the Airport.

Ask flight attendant for water during flight and she was a little rude get the water.

Baggage made it successfully to destination despite short layover. Appreciate that.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

There was a loud squeaky sound the whole time we were flying.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Honestly, I didn’t expect that I will experience this long time wait during the check in. There was only one person who was taking care of the passengers for the economy class and it took us to wait about one hour to do our check i. As a result we barely get to the airplane as the gate was at the end of the airport. That is totally not professional where one crue is working at the registration desk with economy and 3-4 crues are helping for the business class.

Everything was pretty good except for food. They need to improve on it compared to other airlines.

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

I had a great flight. Everything went smoothly and the flight arrived early.

Aisle chair was good and liked the foot bar preventing you from putting your foot in the isle, The breakfast on this international flight to Zurich was horrible (Europeans, specially, used to good food) may make this a dealbreaker for booking with United Airlines again. I agreed with my Spanish fellow passenger.

On time take off…US cabins look tired and need of refresh!

Backpack should NOT allowed put in the flight bin , only put it under the seat. I can't find space put my carry on luggage!!! and I pay for it ! that was very bad experience

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Internet service was erratic. Crew service was poor and slow. My luggage on this non-stop flight was lost and not recovered

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

Not sure why JAL partnered with American Airlines because their service is no where near similar. Flight attendants were not friendly and didn’t smile. Food was horrible…

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

We are gluten free, there were not any available complimentary gluten free options.

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

FRONTIER SUCKS! The agent downstairs tricked me into booking, just to get to the gate. At the gate, they told me they couldn't help. I then called Customer Service. They and the gate attendants kept blaming each other. Neither side was willing to help the customer.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

I am very disappointed with Frontier Airlines. They cancelled our flight because they couldn't find a crew member, and then didn't get us to our connecting flight. We had to cancel our whole vacation. We were promised flight and hotel vouchers, but they never sent them.

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Book cheap domestic flights from Ontario

Recent round-trip flight deals

8/12Mon
nonstopFrontier
1h 17mONT-LAS
8/15Thu
nonstopFrontier
1h 08mLAS-ONT
$39
8/5Mon
nonstopFrontier
1h 17mONT-LAS
8/7Wed
nonstopFrontier
1h 07mLAS-ONT
$40
7/24Wed
nonstopAlaska Airlines
2h 35mONT-SEA
7/24Wed
nonstopAlaska Airlines
2h 33mSEA-ONT
$151
7/16Tue
1 stopDelta
7h 01mONT-SEA
7/17Wed
1 stopDelta
5h 05mSEA-ONT
$176
7/16Tue
nonstopDelta
2h 46mONT-SEA
7/16Tue
nonstopDelta
2h 47mSEA-ONT
$177
7/13Sat
1 stopAlaska Airlines
5h 32mONT-SEA
7/16Tue
nonstopAlaska Airlines
2h 35mSEA-ONT
$186
8/20Tue
nonstopUnited Airlines
2h 18mONT-DEN
8/27Tue
nonstopUnited Airlines
2h 17mDEN-ONT
$197
9/30Mon
1 stopAmerican Airlines
5h 02mONT-LAS
10/9Wed
1 stopAmerican Airlines
3h 39mLAS-ONT
$199
8/17Sat
1 stopAmerican Airlines
8h 43mONT-LGA
8/24Sat
1 stopAmerican Airlines
10h 15mLGA-ONT
$226
8/16Fri
1 stopUnited Airlines
9h 23mONT-EWR
8/23Fri
1 stopUnited Airlines
8h 21mEWR-ONT
$266

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Recent one-way flight deals

7/21Sun
nonstopFrontier
1h 22mONT-LAS
$34
7/8Mon
nonstopFrontier
1h 26mONT-SFO
$34
8/13Tue
1 stopDelta
6h 59mONT-SEA
$88
8/15Thu
1 stopAmerican Airlines
5h 23mONT-LAS
$98
7/6Sat
1 stopDelta
4h 51mONT-DEN
$98
9/4Wed
1 stopUnited Airlines
8h 02mONT-DFW
$104
9/16Mon
1 stopAlaska Airlines
8h 54mONT-DEN
$104
7/12Fri
1 stopAmerican Airlines
5h 20mONT-LAS
$105
7/11Thu
1 stopAlaska Airlines
5h 32mONT-SEA
$108
7/30Tue
1 stopUnited Airlines
8h 15mONT-EWR
$123

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Last minute flights from Ontario to Anywhere

Last minute flight, train and bus deals

6/11Tue
nonstopFrontier
1h 10mONT-LAS
6/15Sat
nonstopFrontier
1h 07mLAS-ONT
$73
6/11Tue
nonstopFrontier
1h 28mONT-SFO
6/12Wed
nonstopFrontier
1h 23mSFO-ONT
$73
6/7Fri
multi-stopAmerican Airlines
6h 29mONT-SFO
8/12Mon
multi-stopAmerican Airlines
6h 08mSFO-ONT
$230
6/7Fri
multi-stopAmerican Airlines
10h 19mONT-JFK
6/10Mon
multi-stopAmerican Airlines
11h 09mJFK-ONT
$286
6/8Sat
multi-stopDelta
7h 23mONT-LGA
6/12Wed
multi-stopDelta
7h 20mLGA-ONT
$286
6/8Sat
multi-stopDelta
8h 53mONT-LGA
6/10Mon
multi-stopDelta
9h 43mLGA-ONT
$291
6/11Tue
multi-stopUnited Airlines
11h 00mONT-HNL
6/23Sun
multi-stopUnited Airlines
10h 27mHNL-ONT
$419
6/7Fri
multi-stopUnited Airlines
11h 00mONT-HNL
6/9Sun
multi-stopUnited Airlines
10h 27mHNL-ONT
$440
6/9Sun
nonstopAlaska Airlines
2h 39mONT-SEA
6/14Fri
nonstopAlaska Airlines
2h 35mSEA-ONT
$477
6/8Sat
multi-stopAlaska Airlines
30h 58mONT-HNL
6/12Wed
multi-stopAlaska Airlines
16h 05mHNL-ONT
$526

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Book cheap international flights from Ontario

Recent round-trip flight deals

9/7Sat
multi-stopFrontier
18h 07mONT-CUN
9/14Sat
multi-stopFrontier
10h 04mCUN-ONT
$257
8/9Fri
multi-stopFrontier
10h 23mONT-CUN
8/16Fri
multi-stopFrontier
9h 28mCUN-ONT
$270
9/17Tue
multi-stopAmerican Airlines
11h 16mONT-CUN
9/24Tue
multi-stopAmerican Airlines
11h 09mCUN-ONT
$374
8/20Tue
multi-stopAmerican Airlines
15h 08mONT-CUN
8/30Fri
multi-stopAmerican Airlines
17h 47mCUN-ONT
$389
7/15Mon
multi-stopUnited Airlines
14h 07mONT-CUN
7/18Thu
multi-stopUnited Airlines
17h 31mCUN-ONT
$490
9/3Tue
multi-stopChina Airlines
17h 50mONT-MNL
9/5Thu
multi-stopChina Airlines
16h 55mMNL-ONT
$765
10/8Tue
multi-stopChina Airlines
18h 25mONT-MNL
10/29Tue
multi-stopChina Airlines
15h 40mMNL-ONT
$772
8/26Mon
multi-stopUnited Airlines
20h 10mONT-MNL
9/11Wed
multi-stopUnited Airlines
23h 42mMNL-ONT
$957
10/21Mon
multi-stopDelta
36h 05mONT-DEL
11/17Sun
multi-stopDelta
33h 03mDEL-ONT
$1,190
10/21Mon
multi-stopDelta
36h 05mONT-DEL
11/18Mon
multi-stopDelta
37h 27mDEL-ONT
$1,195

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Recent one-way flight deals

9/30Mon
multi-stop
17h 42mONT-CUN
$136
8/3Sat
multi-stopFrontier
18h 27mONT-CUN
$137
9/21Sat
multi-stopAmerican Airlines
13h 02mONT-CUN
$186
8/3Sat
multi-stopAmerican Airlines
11h 16mONT-CUN
$210
7/9Tue
multi-stopUnited Airlines
14h 07mONT-CUN
$226
8/31Sat
multi-stopUnited Airlines
30h 32mONT-CUN
$242
8/6Tue
multi-stopChina Airlines
17h 50mONT-MNL
$465
8/5Mon
multi-stopChina Airlines
17h 50mONT-MNL
$477
6/29Sat
multi-stopDelta
31h 50mONT-DEL
$679
7/4Thu
multi-stopDelta
30h 25mONT-DEL
$961

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Flights from Ontario to Anywhere

Departure:

Ontario (ONT)United States

Return flight deals:

Anywhere - Ontario

Cabin classes:

$363
$153
$296
$37