ONT - BCN

$413 Find Cheap Flights from Ontario to Barcelona

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 Barcelona departing on 2/28. 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.
1 adult
0 bags

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Barcelona.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Barcelona.
In the last 7 days travelers have searched 41,299,237 times on KAYAK, and here is why:

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Cheap Flight Deals from Ontario to Barcelona (ONT-BCN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Barcelona 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 from Ontario to Barcelona

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Ontario to Barcelona.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:05 am - 8:00 amONT-BCN
15h 55m1 stop
10:15 am - 10:52 pmBCN-ONT
21h 37m1 stop
$619KLM
Find Deal
Tue, Jan 28 - Tue, Feb 4
6:00 am - 9:00 amONT-BCN
18h 00m2 stops
11:00 am - 9:57 pmBCN-ONT
19h 57m2 stops
$624United Airlines
Find Deal
Tue, Jan 28 - Tue, Feb 4
11:59 pm - 4:25 pmONT-BCN
31h 26m2 stops
9:10 pm - 10:27 pmBCN-ONT
34h 17m2 stops
$642British Airways
Find Deal
Sat, Mar 8 - Mon, Mar 31
1:40 pm - 8:50 amONT-BCN
34h 10m3 stops
12:15 pm - 12:38 pmBCN-ONT
33h 23m3 stops
$658Air Canada
Find Deal
Sat, Mar 8 - Mon, Mar 31
11:59 pm - 4:25 pmONT-BCN
31h 26m2 stops
12:20 pm - 11:54 pmBCN-ONT
20h 34m1 stop
$671British Airways
Find Deal
Sat, Mar 8 - Mon, Mar 31
7:05 am - 8:40 amONT-BCN
16h 35m1 stop
11:35 am - 11:36 amBCN-ONT
33h 01m1 stop
$792Delta
Find Deal
Sat, Mar 8 - Mon, Mar 31
12:46 pm - 8:20 amONT-BCN
35h 34m1 stop
11:35 am - 11:24 amBCN-ONT
32h 49m1 stop
$801Delta
Find Deal
Sat, Mar 29 - Mon, Apr 14
2:54 pm - 8:20 pmONT-BCN
20h 26m2 stops
10:30 am - 9:27 pmBCN-ONT
43h 57m2 stops
$943Iberia
Find Deal
Sun, Mar 2 - Sun, Mar 9
1:35 pm - 9:20 amONT-BCN
34h 45m2 stops
1:15 pm - 12:38 pmBCN-ONT
56h 23m2 stops
$996Air Canada
Find Deal
Thu, Apr 10 - Mon, Apr 21
10:51 am - 7:15 pmONT-BCN
23h 24m2 stops
9:15 am - 11:53 pmBCN-ONT
23h 38m2 stops
$1,010Iberia
Find Deal
Sat, Feb 15 - Sun, Feb 23

Flights from Ontario to Barcelona - Travel Insights & Trends

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

What is the cheapest month to fly from Ontario to Barcelona-El Prat Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Barcelona-El Prat Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Ontario to Barcelona-El Prat Airport is February, where tickets cost $487 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,120 and $1,023 respectively.

How far in advance should I book a flight from Ontario to Barcelona-El Prat Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Barcelona-El Prat Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Ontario to Barcelona-El Prat Airport, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low season

January

High season

June

Cheapest flight

$413
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 46% increase in price.
Flight from Ontario to Barcelona

When to book flights from Ontario to Barcelona

Are your dates flexible? Find out the best times to travel from Ontario to Barcelona based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Ontario to Barcelona flights

  • What is the cheapest flight from Ontario to Barcelona-El Prat Airport?

    In the last 3 days, the lowest price for a flight from Ontario to Barcelona-El Prat Airport was $413 for a one-way ticket and $619 for a round-trip.

  • Do I need a passport to fly between Ontario and Barcelona?

    Yes

  • Which airports will I be using when flying from Ontario to Barcelona?

    Ontario airport is called Ontario and the only airport in Barcelona is Barcelona-El Prat.

  • Which aircraft models fly most regularly from Ontario to Barcelona?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Barcelona?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Ontario and Barcelona, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Barcelona, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Barcelona are Delta and United Airlines. With an average price for the route of $780 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $973 and an overall rating of 7.4.

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

    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 to Barcelona.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Barcelona 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 to Barcelona?

    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 Barcelona with an airline and back to Ontario with another airline. Booking your flights between Ontario and BCN can sometimes prove cheaper using this method.

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

    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 Barcelona 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 5 airlines serving from Ontario to Barcelona

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Barcelona. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Barcelona? 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
DeltaOverall score based on 8540 reviews
8.0Comfort
7.3Food
8.6Crew
7.9Entertainment
8.2Boarding
Airline reviews

It was terrible, if they ran flights on time it would make a big difference.

2.0 MediocreDarren, Nov 2024LAX - BOS
Read more Delta reviews

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

My seat was changed at the last minute and I was moved to the last row, right next to the bathroom despite selecting my seat well in advance. I was also made to check my carry on due to space but when I got on the plane there was significant empty overhead space. Picking up my carry on from the luggage carousel added time to my trip which had already been extended due to delay.

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.

Old and out of date plane, it seem like every time I fly with united there’s and issue. We were delayed,

We took off an hour late due to arrival airport not having enough gates. That was followed by 1:30 wait to get our bags delivered for the entire flight.

For an 8.5 hour flight the service on board lacked a bit. Service start was slow, the food was worse than usual and they skipped the snack they were supposed to deliver before landing.

Wish movie and music choices changed more often. Mostly same from a month or two ago when I last flew.

It was good. Just that the seats could not be reclined. The people behind were not ready to let the chairs be reclined

Checkin was painful and slow! Lady didn’t seem to know what was going on and couldn’t explain the delay. Seemed ahe couldnt see the computer scree and we couldn’t hear her talk through her mask.

Plane left & arrived early- 5 Crew great. Wi fi - paid for 2, only 1 worked - so so. Waste of $. Coolie was good

There was no USB plug in my section of the plane. So I could not charge my phone. Also, there was no screen to watch movie or anything like that. Wish I had known that in advance, I would’ve brought my iPad.

Made all groups except 2 check despite ample bin space. Inflight WiFi and entertainment didn’t work most of the time.

Seats are smaller and harder than other airlines we have travels with. Food was edible but no good. The sandwich was the only thing I would eat again. They did have a lot of movies to watch.

Multiple maintenance delays and the missed and rebooked connection changed gates at least 6 times including one which had us walking 20 minutes to another terminal and then back again. Seated our family of three in different middle seats throughout the plane and then there was an empty seat next to me. Very long travel day which I would have never agreed to if I knew the itinerary would be changed at 5 am, 2 hours before takeoff.

It was as expected for such a short flight. No complaints

It was nice being on a flight that had working wifi. The boarding was quick - why don’t all airlines have small boarding groups window to aisle? Makes so much sense!!! I was disappointed to be the first person stopped to have to gate check my carryon. Especially when there was plenty of overhead space at the back! But I get it…keeps it moving. Crew was nice.

The flight encountered a delay exceeding 4 hours. The food voucher issued was valued at $12, insufficient to cover our meal expenses. Consequently, I was unable to take my medication, leading to a drop in blood sugar levels and exacerbating my anxiety.

Crazy seating issues. We got seated far apart. Offered middle seats at a premium rate. Why is a middle seat now the expensive seat? Baffling.

The boarding process was a nightmare and though we were traveling business class, we were in Group 2 and the organization was terrible. The Business Class on this flight was crowded and did not feel clean and nice. Overall, I would not travel Business again on the American Airline flight through British Airways Not nearly special enough for the considerable cost .

Not too impressed with them to be honest. They had forgotten my gf meal, despite the fact that the app had notified me that it was sorted. Apparently there is a ‘glitch’ in the system, according to one of the stewardesses, and has been for a while. Also the legroom in economy is way too small (and I’m a slight person) and are very uncomfortable. An extra Internal flight I booked via the app, had not even given me the option to order a meal, so was unaware of that and left without food on a 9 hr. flight !! Don’t think I’ll use AA again after this.

The flight was uneventful. What was a problem was I was delayed getting home one entire day because the flight from Sacramento was delayed. That made getting to my connecting flight impossible. I had to stay another night at the hotel and incur that expense as a result.

VERY disappointed at the agent checking in my luggage. I know that the weight limit is 23 kg, a little over 50 pounds (50.71 pounds). Yet the agent kept repeating "50 pounds". So I said, the limit is 23 kg, and she had the audacity to say 'no, it is 22 kg!" Imagine my surprise. Was she ignorant or was she poorly trained? Not sure. The boarding process was pretty good. The speakers were loud enough so I still could hear them despite inconsiderate passengers continuing to speak while the announcements were going on. During the flight, the teenage girl sitting behind me kept pressing her feet to the back of my chair. I turned around several times, yet she did not get the hint. I did not make a fuss since I sense I had a bad streak that night with AA, so I just did the best I can to lean forward and not let that bother me.

Seats were very uncomfortable. I paid extra for a seat with more leg room, the seat was no different than a seat at the back of the plane. Flight attendant was rude.

I had a disappointing experience at the San Diego airport with one of your gate agents. Despite being in Zone 4 and traveling with a standard carry-on bag that has never been an issue (30 flights in Q4 alone), the tall, blonde gentleman forced me to gate-check my bag. When I politely asked if we could verify the bag’s size, he became confrontational, even threatening to deny me boarding twice. His behavior appeared erratic and unprofessional, projecting a negative attitude onto passengers, as if he was going through something mentally. Notably, there was ample overhead space once all passengers had boarded. In contrast, the tall, older Asian agent handled the situation with professionalism and calmness, making a clear effort to de-escalate. As an avid traveler, this unnecessary inconvenience set a frustrating tone for my trip to Asia.

This leg was run by United. Food was ok and the regular menu was actually not good ( Hindu meal was fine). Crew was fantastic

Very unfriendly crew, Air Canada should hire staff that are willing to do their job and be friendly to others. Unmannered flight attendants.

The fact that we have to check in our carryons when we met the requirements and there was plenty of spaces near we sat was ridiculous

Problem with operation of on board entertainment computer. Failed about 1 /2 hour into the flight. Rebooting failed to restore.

There was a terrible delay upon arrival in Barcelona. The plane had to park a great distance from the terminal, and only one bus was available to make the ~15 minutes each way trip, meaning it was ~ 45 minutes after we landed that I finally entered the terminal.

Hated charging my devices. The location of the outlet was inconvenient. And no USB connection. So outdated.

I was very good. Service was great. Seating selection was not too good.

Arrived at our connection to find out all 4 of our seats were moved in different parts of the aircraft. Traveling with two small children, this was not going to work. We spoke with the gate attendant and she was not helpful and downright rude. They could only “accommodate” having 2 seats together and this was an international flight. We will not be traveling with air Canada again unless there are absolutely no other options.

The mid flight snack could have been more substantial than tiny bag of pretzels.

The flight was okay, but legroom was tight for me and I’m only average height, although at 30” legroom is comparable with most other airlines. Not much room in the aisle either making the trek to and from the toilet difficult with passengers standing in the aisle. On the whole, it’s probably on a par with budget airlines and the ticket process extremely competitive.

Flight delay and can’t much help passenger do the change connecting flight.

The seats in airbus from LA to London are uncomfortable. They are too narrow. I am a slim person but felt cramped. The way the seats are laid out really hinders privacy. You are forced to look at the person next to you which is awkward, Also the entertainment on the same leg was limited. The crew was excellent and attentive and the food was decent. The seats on London to Delhi leg were way better. The crew again was very attentive and polite.

Reasonably comfortable. Plenty of room. Crew were attentive and continually informing passengers of position. Although stuck in runway for 1 hour, weather issues, it felt like we were the crews first priority

British Airways canceled my flight and I had to fly on Lufthansa the next day. What a garbage airline 🗑️

The whole experience was great. The only improvement would be the entertainment selection

It was good overall. Entertainment was ok, one of the TV screens had issue. Bit old plane but leg space was good. Overhead luggage had good space. The worst part was experience at Heathrow airport, it was total chaos.

Lost our luggage going to Spain. Missed our connecting flight returning to home

It would be great to have at least two choices for a food, instead of just plain pasta 😏

Cabin crew were not nice. The plane was an hour late arriving.

Book cheap flights from Ontario to Barcelona

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Barcelona found on KAYAK in the last 72 hours.
2/28Fri
3 stops
31h 40mONT-BCN
$413
5/7Wed
3 stops
45h 28mONT-BCN
$431
2/10Mon
2 stopsBritish Airways
16h 35mONT-BCN
$454
3/30Sun
1 stopKLM
17h 20mONT-BCN
$457
2/2Sun
2 stopsUnited Airlines
38h 03mONT-BCN
$469
2/10Mon
1 stopKLM
34h 00mONT-BCN
$470
3/29Sat
1 stopAmerican Airlines
25h 11mONT-BCN
$471
3/26Wed
3 stopsUnited Airlines
27h 30mONT-BCN
$477
3/29Sat
1 stopBritish Airways
25h 11mONT-BCN
$485
4/5Sat
2 stopsDelta
19h 55mONT-BCN
$695

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Last minute flights from Ontario to Barcelona

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ontario to Barcelona that are departing in the next 10 days.
1/2Thu
multi-stopKLM
25h 11mONT-BCN
1/16Thu
multi-stopKLM
21h 37mBCN-ONT
$1,329
1/1Wed
multi-stopUnited Airlines
19h 45mONT-BCN
1/8Wed
multi-stopUnited Airlines
41h 14mBCN-ONT
$1,452
1/3Fri
multi-stopBritish Airways
18h 54mONT-BCN
1/10Fri
multi-stopBritish Airways
19h 38mBCN-ONT
$1,735
1/3Fri
multi-stopUnited Airlines
18h 00mONT-BCN
1/5Sun
multi-stopUnited Airlines
34h 40mBCN-ONT
$1,930
1/2Thu
multi-stopKLM
25h 11mONT-BCN
1/5Sun
multi-stopKLM
21h 46mBCN-ONT
$2,432
1/3Fri
multi-stopKLM
16h 48mONT-BCN
1/5Sun
multi-stopKLM
17h 46mBCN-ONT
$2,434
1/1Wed
multi-stopUnited Airlines
17h 50mONT-BCN
1/3Fri
multi-stopUnited Airlines
20h 14mBCN-ONT
$2,762
12/31Tue
multi-stopAvianca
24h 10mONT-BCN
1/10Fri
multi-stopAvianca
41h 10mBCN-ONT
$3,000
1/2Thu
multi-stopBritish Airways
17h 08mONT-BCN
1/4Sat
multi-stopBritish Airways
20h 53mBCN-ONT
$4,001
1/4Sat
multi-stopAvianca
24h 10mONT-BCN
1/8Wed
multi-stopAvianca
41h 10mBCN-ONT
$4,340

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Everything you need to know for your flight from Ontario to Barcelona

Information on your arrival and departure airports

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