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ONT - BCN

$446 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 10/31. 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
vie. 7/12
vie. 7/19

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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 44,148,666 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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:00 am - 9:00 amONT-BCN
18h 00m2 stops
11:45 am - 9:52 pmBCN-ONT
19h 07m2 stops
$493United Airlines
Find Deal
dom., nov. 17 - jue., nov. 28
6:20 pm - 9:40 amONT-BCN
30h 20m2 stops
12:15 pm - 9:53 amBCN-ONT
30h 38m2 stops
$494Air Canada
Find Deal
dom., oct. 6 - mié., nov. 13
10:00 pm - 9:10 amONT-BCN
26h 10m1 stop
6:05 am - 10:28 pmBCN-ONT
25h 23m2 stops
$518Delta
Find Deal
dom., oct. 6 - mié., nov. 13
10:56 am - 4:20 pmONT-BCN
20h 24m2 stops
6:55 pm - 5:52 pmBCN-ONT
31h 57m2 stops
$531British Airways
Find Deal
mar., nov. 5 - mar., nov. 26
7:00 am - 8:40 amONT-BCN
16h 40m1 stop
10:55 am - 10:28 pmBCN-ONT
20h 33m1 stop
$539KLM
Find Deal
lun., nov. 11 - lun., nov. 18
7:00 am - 8:40 amONT-BCN
16h 40m1 stop
10:55 am - 7:22 pmBCN-ONT
17h 27m1 stop
$550Delta
Find Deal
dom., nov. 10 - jue., nov. 21
7:00 am - 8:40 amONT-BCN
16h 40m1 stop
10:55 am - 10:28 pmBCN-ONT
20h 33m1 stop
$589KLM
Find Deal
sáb., nov. 9 - sáb., nov. 23
12:45 pm - 3:40 pmONT-BCN
17h 55m2 stops
10:15 am - 11:26 pmBCN-ONT
22h 11m2 stops
$652British Airways
Find Deal
mar., oct. 8 - mar., oct. 15
8:41 am - 1:10 pmONT-BCN
19h 29m2 stops
11:00 am - 10:12 pmBCN-ONT
20h 12m2 stops
$723American Airlines
Find Deal
vie., oct. 25 - mié., nov. 6
6:00 am - 12:00 pmONT-BCN
21h 00m1 stop
1:55 pm - 11:51 amBCN-ONT
30h 56m1 stop
$919American Airlines
Find Deal
dom., jun. 23 - jue., jul. 4

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 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 $488 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,158 and $1,057 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Ontario to Barcelona-El Prat Airport, you should book around 4 days before departure. For the absolute cheapest price, our data suggests you should book 12 days before departure.

Which airlines provide the cheapest flights from Ontario to Barcelona?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Ontario to Barcelona found on KAYAK was with United Airlines for $466. United Airlines proposed a round-trip connection from $493 and Air Canada from $494.

Good to know

Low season

January

High season

June

Cheapest flight

$446
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 39% 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 $446 for a one-way ticket and $493 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?

    Star Alliance, oneworld, and SkyTeam 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 $903 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 $989 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 10000 reviews
8.2Boarding
7.9Comfort
8.6Crew
8.0Entertainment
7.4Food
Airline reviews

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.

4.0 OkayBrooke, Jun 2024SFO - MSP
Read more about Delta reviews

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.

The entertainment wasn’t playing in the app or online.

Why does it have to be painful to fly long distances?

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

Food is very bad and entertint not too many options ... flight attendet service is not good

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

The flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

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…

Seriously, not displaying departure gate until very last minute is awful. Specially when you have to take an elevator and then transport to go to the sub-terminal. That’s awful in such a busy airport as Heathrow. And I cannot choose seat on this flight because it’s run by British Airways, even entering locator code.

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!

I love air Canada. The staff is so helpful and friendly and attentive. I paid for extra room but chose a ser near a person who took up a lot of space which gave me less space than regular economy, I was sad I did that!

No meal. Flight crew was wonderful, happily finding me storage for my guitar. THANK YOU!!!

Flight was delayed for almost 3 hours. Communication of gate change was poor. Email and screen said one gate and it was a different gate from that. Gate changed first to 64 B and then to 64 C. Originally it was 68B. 64C was not communicated properly!

Plenty of room in the exit row. Sat on the plane an hour before taking off.☹️ Landed late and had to wait for gate availability.

Flight was on time early arrival better entertainment good staff.everything was excellent

They canceled the flight on us very close to the flight date .

My experience was pretty frustrating because the first leg of my flight on United (though booked through Air Canada) was delayed causing me to miss my connecting flight on Air Canada. This could have been an easy solve as there was a direct flight later that morning via Air Canada that they easily could have put me on which would have only gotten me to my destination 2 1/2 hours later but because United and Air Canada don’t seem to have good communication they gave me the run around both telling me to talk with the other which I did three times to no avail. I ended up taking the delayed flight and getting on a new connecting flight which ended up getting me to my destination 6 hours later and I missed the event I was planning to go to this evening.

Everything went smoothly and as expected. We were on time and one flight arrived early.

This is not a Business Class equipped airplane and even the crew apologize before take over BUT BUT Air Canada charged full business class fare

Very good other than we have to wait for one crew and we’re delayed and the pilot and his co- pilot has to make a difference to be right on time arrival. Disappointed about no food service also.

Quick boarding process, slight delays on the tarmac prior to takeoff and a late arrival due to an emergency on the landing runway. Not the fault of the airline at all! Cabin crew was very friendly and the Captain kept the passengers well informed about what was going on

Economy class has no legroom so if you have the money worth to upgrade! Food was absolutely horrible! The crew was super nice!!!!!

Wonderful service and very comfy in the bulkhead in Economy Plus! Delicious food.

It was very good. We got a late start by about an hour and a half. However I worked rather have that than crash. It was purely mechanical. They had our tickets ready when we came off the plane in London for the next leg. The only mishap was when we got to Lisbon my husbands luggage made or bit mine didn't. All was not lost because I did finally get it 2 days later. I was really pleased that they c made the effort.

The entire process was flawless and as expected flying first class. The only thing that I have a complaint on...when first boarding, the plane was EXTREMELY cold; then when we were trying to sleep, it was way too hot - just better regulating (especially trying to sleep) would have made it perfect.

Lost our luggage in Heathrow. Showed up 3 days into a 7 day vacation. Very inconvenient and disappointing!!

Lost our bags in Heathrow, We didn’t receive bags in Mallorca for 3 days, out of a 7 day cycling vacation. Really inconvenient and disappointing!

Our luggage is missing. We are at the Hotel Gran Via in Barcelona

We paid to have overhead carry-on baggage. When we got to the gate we were told that our carry on bags would need to be checked and go below because the flight was full. Notably we were nowhere near the last people to board and about 30 other passengers also had to check their carry-on bags. Other than that the flight was fine.

Crew were very friendly and helpful. They explained to us in detail the delay in our takeoff due to the storm that rolled in from Belfast and did their best to make up the time. Always great to fly BA!

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.
10/31jue.
3 stops
36h 42mONT-BCN
$446
10/7lun.
1 stopUnited Airlines
21h 42mONT-BCN
$466
10/13dom.
2 stopsAmerican Airlines
21h 38mONT-BCN
$501
10/7lun.
2 stopsBritish Airways
20h 38mONT-BCN
$533
7/16mar.
1 stopAmerican Airlines
20h 55mONT-BCN
$666
7/21dom.
1 stopBritish Airways
20h 55mONT-BCN
$669
7/22lun.
2 stopsAir Canada
19h 30mONT-BCN
$704
7/23mar.
2 stopsAir Canada
31h 00mONT-BCN
$715
9/28sáb.
1 stopDelta
17h 00mONT-BCN
$747
9/27vie.
1 stopDelta
26h 10mONT-BCN
$758

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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.
6/15sáb.
multi-stopBritish Airways
27h 10mONT-BCN
6/17lun.
multi-stopBritish Airways
19h 04mBCN-ONT
$1,163
6/14vie.
multi-stop
34h 58mONT-BCN
6/21vie.
multi-stop
42h 34mBCN-ONT
$1,273
6/17lun.
multi-stopIberia
14h 11mONT-BCN
6/24lun.
multi-stopIberia
34h 04mBCN-ONT
$1,955
6/14vie.
multi-stopIberia
38h 16mONT-BCN
6/21vie.
multi-stopIberia
17h 14mBCN-ONT
$2,150
6/17lun.
multi-stopKLM
17h 05mONT-BCN
7/3mié.
multi-stopKLM
17h 19mBCN-ONT
$2,535
6/17lun.
multi-stopKLM
17h 05mONT-BCN
6/29sáb.
multi-stopKLM
17h 17mBCN-ONT
$2,605
6/17lun.
multi-stopUnited Airlines
15h 05mONT-BCN
7/25jue.
multi-stopUnited Airlines
15h 45mBCN-ONT
$2,910
6/14vie.
multi-stopUnited Airlines
15h 05mONT-BCN
6/21vie.
multi-stopUnited Airlines
15h 27mBCN-ONT
$2,980
6/13jue.
multi-stopAmerican Airlines
14h 11mONT-BCN
6/17lun.
multi-stopAmerican Airlines
19h 09mBCN-ONT
$3,254
6/17lun.
multi-stopAmerican Airlines
14h 11mONT-BCN
6/27jue.
multi-stopAmerican Airlines
17h 14mBCN-ONT
$3,860

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Ontario - Barcelona Flights

Departure:

Ontario (ONT)United States

Destination:

Barcelona (BCN)Spain

Return flight deals:

Barcelona - Ontario

Cabin classes: