ONT - BCN

$492 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 5/27. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Barcelona-El Prat Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Barcelona, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Barcelona, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$833
Turkish Airlines
Fri 5/15Tue 5/26
ONT - BCN • 2 stops
Cheapest one-way
$492
Multiple Airlines
Wed 5/27
ONT - BCN • 3 stops
Top airlines
Cheapest • from $833 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Barcelona. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $674 (round-trip)
Shortest trip • 14h 20m (one-way)
Insights
Insights
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Barcelona!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Barcelona

Fri, May 15 - Tue, May 26
Turkish Airlines Logo
11:25 pm - 1:30 pm
ONT
-
BCN
53h 05m
2 stops
Turkish Airlines Logo
7:40 am - 8:45 pm
BCN
-
ONT
46h 05m
2 stops
$833Turkish Airlines
Sat, Sep 12 - Sun, Sep 20
Turkish Airlines Logo
10:56 pm - 10:45 am
ONT
-
BCN
26h 49m
2 stops
Turkish Airlines Logo
12:10 pm - 9:29 pm
BCN
-
ONT
42h 19m
2 stops
$858Turkish Airlines
Wed, Aug 5 - Tue, Sep 22
British Airways Logo
10:50 am - 10:10 am
ONT
-
BCN
14h 20m
1 stop
British Airways Logo
10:45 am - 5:39 pm
BCN
-
ONT
15h 54m
1 stop
$934British Airways
Sun, Apr 12 - Tue, Apr 28
British Airways Logo
11:59 pm - 7:35 am
ONT
-
BCN
22h 36m
1 stop
British Airways Logo
10:45 am - 6:37 pm
BCN
-
ONT
16h 52m
1 stop
$942British Airways
Wed, Sep 9 - Wed, Sep 23
Turkish Airlines Logo
10:56 pm - 11:15 pm
ONT
-
BCN
39h 19m
2 stops
Turkish Airlines Logo
7:40 am - 9:29 pm
BCN
-
ONT
46h 49m
2 stops
$947Turkish Airlines
Sun, Apr 12 - Tue, Apr 28
American Airlines Logo
11:59 pm - 7:35 am
ONT
-
BCN
22h 36m
1 stop
American Airlines Logo
10:30 am - 8:54 pm
BCN
-
ONT
19h 24m
2 stops
$948American Airlines
Sun, Apr 12 - Tue, Apr 28
United Airlines Logo
7:00 am - 8:00 am
ONT
-
BCN
40h 00m
2 stops
United Airlines Logo
11:15 am - 8:36 pm
BCN
-
ONT
18h 21m
2 stops
$951United Airlines
Sun, Apr 19 - Wed, Apr 29
British Airways Logo
7:30 am - 7:35 am
ONT
-
BCN
15h 05m
1 stop
British Airways Logo
10:45 am - 6:37 pm
BCN
-
ONT
16h 52m
1 stop
$960British Airways
Mon, Apr 6 - Tue, Apr 28
Multiple Airlines Logo
7:08 pm - 11:15 pm
ONT
-
BCN
43h 07m
2 stops
Multiple Airlines Logo
7:05 pm - 2:32 pm
BCN
-
ONT
52h 27m
2 stops
$963Multiple Airlines
Wed, Apr 15 - Wed, Apr 22
Delta Logo
12:49 pm - 12:50 pm
ONT
-
BCN
15h 01m
1 stop
Delta Logo
11:00 am - 6:33 pm
BCN
-
ONT
16h 33m
1 stop
$965Delta
Booking Insights

KAYAK's insights & trends for Ontario to Barcelona flights

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.

Which airlines provide the cheapest flights from Ontario to Barcelona?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to Barcelona were found on Turkish Airlines ($833) and British Airways ($934).

Which airlines fly non-stop between Ontario and Barcelona-El Prat Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Ontario to Barcelona-El Prat Airport.

There is just one airline that flies from Ontario to Barcelona-El Prat Airport direct and that is Iberia. The best round-trip deal found from Iberia for the route is $605.

Good to know

Low seasonSeptember
Cheapest flight$492
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly and prices are also 1% lower on average.
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 $492 for a one-way ticket and $833 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, and oneworld are the airline alliances operating flights between Ontario and Barcelona, with Star Alliance being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from Ontario to Barcelona are United Airlines and Iberia. With an average price for the route of $1,102 and an overall rating of 7.4, United Airlines is the most popular choice. Iberia is also a great choice for the route, with an average price of $783 and an overall rating of 7.0.

  • 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.

Reviews of the top 3 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.
7.4
United AirlinesOverall score based on 9431 reviews
8.1Crew
7.7Boarding
7.3Comfort
7.1Entertainment
6.6Food
Airline reviews

The 777’s economy seat’s legroom was more tolerable than expected. I appreciate the reclining mechanism which slides the seat forward to minimize cannibalizing the space behind. The food was terrible: very salty.

6.0 GoodAnonymous, Mar 2026
SFO - NRT
Read more United Airlines reviews

The 777’s economy seat’s legroom was more tolerable than expected. I appreciate the reclining mechanism which slides the seat forward to minimize cannibalizing the space behind. The food was terrible: very salty.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

We had turbulence ever 1/2 hr or so and the captains announcements were SOOOO LOUD

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

it was a very short flight so my expectations were low.

Entertainment kept turning itself off. Gave up on watching a movie.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Awful. They didn't even show concern that her connecting flight( Dallas to Mardrid) was gone/missing. I don't understand how that is even possible. Rudest answer from one of the crew was that American Airlines sold the tickets to somebody else. My daughter was not in the list.

The flight was canceled on a Thursday last minute. I lost thousands of dollars in hotels and car rental

Excellent lie flat seat for premium economy! Great staff. Bad food . Not so great entertainment. My bag didn’t make it either.

Really like the idea experience on this airline I will use again

The pilot was professional and very good. The flight crew, very young and often looked flustered and overwhelmed. The seats were among the most uncomfortable in the air. The boarding somewhat chaotic. The price reasonable. Overall it was an average budget airline experience...although Iberia is not a budget airline. I fear if Iberia doesn't up it's game customers like us will go elsewhere.

It wasn’t great because the third-party from Kayak there was just no information about how to check in with Vueling. And the purchase of the ticket from under pricer just made everything really difficult. I’m unlikely to use Kayak again for these reasons.

the seats were so cramped you could barely move. it was difficult to eat when passengers would recline their seats. the seats were so flimsy and unstable that whenever someone got in and out of their seat, it bounced like a spring back in your face. the movies were nice. the food was terrible. even though the conditions were terrible, they tried to pressure passengers to relocate their seats to accommodate adults who were related and wanted to sit next to each other, even after the passengers expressed that they did not want to move for that purpose. on the connecting flight, the “service” consisted of items for purchase. even though the flight was only 45 minutes, once again passengers (including me) were pressured to relocate for people to sit next to each other. they couldn’t be apart for 45 minutes? this was much less compelling than being apart for an 8 hour flight.

Everything went smoothly, and we even arrived 40min earlier than scheduled, on an Orland-Madrid route.

It was budget airline Veuling, even though we booked Iberia.

The staff was very nice and helpful. Some of the best crew I have met.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

Awful it always is unfortunately is the only way to fly direct to london

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

Airlines have to stop assuming passengers bring entertainment. Provide it like you used to in business class and above!! N

Need to offer Better food from LAX to London Service from London to Delhi very delayed after take off.

Great crew and food and beverage. Seating tight but not the airline's fault. Will definitely fly BA in future!

Crying baby the ENTIRE flight. Not your fault, but I paid 2700 for a premium economy ticket and it wasn't worth it. should have just stuck with coach. flight attendants very mediocre - minimal effort. Plane didn't seem very clean. Didn't have any cleansing wipes - most airlines give you this when you board. Flat screen scrolling didn't work. Toiletry case a joke - why bother at all?

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

Information on your arrival and departure airports