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$397+ 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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
BCN — ONT
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
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 January 26, 2026.

This United Airlines deal was found by Cheapflights users on 1/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:50 am
BCN
-
ONT
2 stops25h 07m
United Airlines
Tue 3/106:15 am
ONT
-
BCN
2 stops18h 05m
United Airlines
Deal found 1/26$536
This Iberia deal was found by Cheapflights users on 1/25. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1810:40 am
BCN
-
ONT
1 stop21h 09m
Iberia
Tue 3/107:00 am
ONT
-
BCN
1 stop16h 50m
Iberia
Deal found 1/25$542
This Iberia deal was found by Cheapflights users on 1/25. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1910:40 am
BCN
-
ONT
1 stop20h 49m
Iberia
Tue 3/37:00 am
ONT
-
BCN
1 stop16h 50m
Iberia
Deal found 1/25$547
This British Airways deal was found by Cheapflights users on 1/26. 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.
Thu 2/510:40 am
BCN
-
ONT
1 stop17h 05m
British Airways
Thu 2/197:00 am
ONT
-
BCN
1 stop16h 50m
British Airways
Deal found 1/26$548
This United Airlines deal was found by Cheapflights users on 1/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2411:50 am
BCN
-
ONT
2 stops19h 55m
United Airlines
Tue 4/281:34 pm
ONT
-
BCN
2 stops17h 01m
United Airlines
Deal found 1/25$554
This British Airways deal was found by Cheapflights users on 1/26. 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.
Thu 2/2611:15 am
BCN
-
ONT
2 stops20h 14m
British Airways
Tue 3/107:00 am
ONT
-
BCN
1 stop16h 50m
British Airways
Deal found 1/26$557
This Trip.com deal was found by Cheapflights users on 1/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/310:40 am
BCN
-
ONT
1 stop21h 09m
Iberia
Thu 4/27:00 am
ONT
-
BCN
1 stop15h 35m
Iberia
Deal found 1/25$582
This Iberia deal was found by Cheapflights users on 1/25. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:45 am
BCN
-
ONT
1 stop20h 05m
Iberia
Thu 9/2410:56 am
ONT
-
BCN
1 stop14h 14m
Iberia
Deal found 1/25$583
This Iberia deal was found by Cheapflights users on 1/26. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2010:45 am
BCN
-
ONT
1 stop22h 01m
Iberia
Tue 5/57:30 am
ONT
-
BCN
1 stop15h 05m
Iberia
Deal found 1/26$584
This Trip.com deal was found by Cheapflights users on 1/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:45 am
BCN
-
ONT
1 stop20h 50m
Iberia
Sun 4/197:30 am
ONT
-
BCN
1 stop17h 40m
Iberia
Deal found 1/26$596
This Iberia deal was found by Cheapflights users on 1/24. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/410:40 am
BCN
-
ONT
1 stop36h 38m
Iberia
Sun 2/86:00 am
ONT
-
BCN
1 stop17h 50m
Iberia
Deal found 1/24$601

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$533
(United Airlines)

One-way from

$397
(Kiwi.com)

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 ($131 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 26, 2026.
Use the filters below to find and compare flights from Barcelona-El Prat Airport to Ontario that are best for you.

Fly from

Barcelona-El Prat

Fly to

Ontario

Route

Depart

Return

Price

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 4/17

8:00 am-10:45 pm

2 stops23h 45m

Ontario

Thu 4/23

7:00 am-1:15 pm

1 stop21h 15m

$533

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Thu 3/19

9:55 am-10:57 pm

2 stops21h 02m

Ontario

Sat 5/9

1:30 pm-2:20 pm

1 stop15h 50m

$533

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Thu 4/16

8:00 am-10:45 pm

2 stops23h 45m

Ontario

Thu 4/23

7:00 am-1:15 pm

1 stop21h 15m

$533

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 3/20

6:50 am-10:57 pm

2 stops24h 07m

Ontario

Thu 5/7

10:37 am-2:20 pm

1 stop18h 43m

$533

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Thu 3/19

9:55 am-10:57 pm

2 stops21h 02m

Ontario

Sun 5/10

7:00 am-1:15 pm

1 stop21h 15m

$533

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Thu 3/19

9:55 am-10:57 pm

2 stops21h 02m

Ontario

Mon 5/11

1:30 pm-2:20 pm

1 stop15h 50m

$533

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Fri 3/20

6:50 am-10:57 pm

2 stops24h 07m

Ontario

Sun 5/10

7:00 am-1:15 pm

1 stop21h 15m

$533

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Tue 3/3

1:50 pm-12:48 pm

2 stops31h 58m

Ontario

Tue 3/10

6:15 am-8:20 am

2 stops18h 05m

$536

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Tue 3/10

6:50 am-8:50 pm

2 stops22h 00m

Ontario

Tue 3/17

1:50 pm-5:35 pm

2 stops19h 45m

$537

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Sat 4/18

11:15 am-10:45 pm

2 stops20h 30m

Ontario

Thu 4/23

7:00 am-1:15 pm

1 stop21h 15m

$544

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 20 results
1
2
  • 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.

Cheapflights Insights

Everything you need to know about your flight from Barcelona-El Prat Airport to Ontario

What is the cheapest month to book a flight from Barcelona-El Prat Airport to Ontario?

Currently, February is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Ontario (average of $396). Flying from Barcelona-El Prat Airport to Ontario in July is currently the most expensive (average of $608). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 23h 45m. The distance between Barcelona-El Prat Airport and Ontario is about 5971 mi.

  • 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.

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

    Currently, February is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Ontario (average of $396). Flying from Barcelona-El Prat Airport to Ontario in July is currently the most expensive (average of $608). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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