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$409+ Cheap flights from Barcelona-El Prat (BCN) to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
BCN — ONT
May 28 — Jun 41
Thu 5/28
Thu 6/4
1 adult, Economy
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Cheap flight deals from Barcelona-El Prat to Ontario

Cheapest flights from Barcelona-El Prat to Ontario
Explore the most affordable flight options available from Barcelona-El Prat to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.

This KLM deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1511:00 am
BCN
-
ONT
1 stop16h 36m
KLM
Sat 5/3011:52 am
ONT
-
BCN
1 stop14h 18m
KLM
Deal found 4/24$838
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:00 am
BCN
-
ONT
1 stop16h 33m
Delta
Thu 5/146:45 am
ONT
-
BCN
1 stop19h 25m
Delta
Deal found 4/23$841
This British Airways deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/110:45 am
BCN
-
ONT
1 stop16h 52m
British Airways
Tue 5/1212:19 pm
ONT
-
BCN
2 stops23h 11m
British Airways
Deal found 4/23$849
This KLM deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:20 am
BCN
-
ONT
2 stops20h 40m
KLM
Thu 5/146:45 am
ONT
-
BCN
1 stop19h 25m
KLM
Deal found 4/23$850
This KLM deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:20 am
BCN
-
ONT
2 stops20h 40m
KLM
Tue 5/121:35 pm
ONT
-
BCN
2 stops17h 50m
KLM
Deal found 4/23$852
This Air France deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:00 am
BCN
-
ONT
1 stop19h 00m
Multiple Airlines
Tue 5/121:35 pm
ONT
-
BCN
2 stops17h 50m
Multiple Airlines
Deal found 4/23$854
This Air France deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3010:05 am
BCN
-
ONT
2 stops19h 55m
Multiple Airlines
Thu 5/146:45 am
ONT
-
BCN
1 stop19h 25m
Multiple Airlines
Deal found 4/23$857
This KLM deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:20 am
BCN
-
ONT
2 stops21h 13m
KLM
Wed 5/131:35 pm
ONT
-
BCN
1 stop36h 35m
KLM
Deal found 4/23$858

Find flight deals from Barcelona-El Prat to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Barcelona-El Prat (BCN) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$838
(KLM)

One-way from

$409
(Avianca)

Popular in

July

Cheapest in

February

Average price

$667
Provider with most accurate pricing for Barcelona-El Prat-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Barcelona-El Prat-Ontario flights.
Search Deals
From Barcelona-El Prat to Ontario
Search Deals
One-way flight from Barcelona-El Prat to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($134 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in April 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Barcelona-El Prat to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2026.
Use the filters below to find and compare flights from Barcelona-El Prat Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 5/15

11:00 am-6:36 pm

1 stop16h 36m

Ontario

Sat 5/30

11:52 am-11:10 am

1 stop14h 18m

$838

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Thu 10/1

8:00 am-8:52 pm

2 stops21h 52m

Ontario

Mon 10/5

1:49 pm-2:20 pm

1 stop15h 31m

$888

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Wed 5/20

11:00 am-6:36 pm

1 stop16h 36m

Ontario

Tue 12/1

7:00 am-8:40 am

1 stop16h 40m

$907

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Wed 9/30

1:20 pm-10:40 pm

1 stop18h 20m

Ontario

Fri 10/2

10:59 pm-8:35 am

2 stops48h 36m

$922

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 10/2

4:10 pm-10:59 pm

1 stop15h 49m

Ontario

Thu 10/8

6:05 am-2:20 pm

1 stop23h 15m

$922

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 5/15

11:00 am-6:36 pm

1 stop16h 36m

Ontario

Sun 5/31

12:07 pm-12:50 pm

1 stop15h 43m

$1,264

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 6/12

7:40 am-10:01 pm

2 stops47h 21m

Ontario

Sat 6/27

11:16 pm-11:15 pm

2 stops62h 59m

$1,304

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Tue 9/29

4:10 pm-10:59 pm

1 stop15h 49m

Ontario

Fri 10/2

1:49 pm-2:20 pm

1 stop15h 31m

$1,484
Quickest round-trip

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Mon 8/3

11:00 am-6:23 pm

1 stop16h 23m

Ontario

Thu 8/13

11:55 am-11:10 am

1 stop14h 15m

$1,484

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Sun 9/6

7:40 am-11:24 pm

2 stops24h 44m

Ontario

Mon 9/14

9:10 pm-5:40 pm

2 stops35h 30m

$1,493

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from Barcelona-El Prat to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Barcelona-El Prat to Ontario in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Barcelona-El Prat Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Barcelona-El Prat Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Barcelona-El Prat Airport-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Barcelona-El Prat Airport-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Barcelona-El Prat Airport-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Barcelona-El Prat to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Barcelona-El Prat with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Barcelona-El Prat to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Barcelona-El Prat?

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Ontario from Barcelona-El Prat. Booking flights from Barcelona-El Prat to Ontario (ONT) should be relatively easy as there are 0 daily inbound flights from Barcelona-El Prat from 0 different airlines.

  • How long is the flight from Barcelona-El Prat Airport to Ontario?

    Departing from Barcelona-El Prat Airport to Ontario will take you 16h 36m. The distance between Barcelona-El Prat Airport and Ontario is about 5971 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Barcelona-El Prat to Ontario that include hotel bookings?

    Yes. In addition to deals on Barcelona-El Prat to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Barcelona-El Prat to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Barcelona-El Prat to Ontario.

  • Can I find deals for business class flights from Barcelona-El Prat to Ontario?

    Yes. Cheapflights offers flight deals from Barcelona-El Prat to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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