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$392+ 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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
BCN — ONT
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap 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 septiembre 11, 2025.

Round-trip from

$482
(Iberia)

One-way from

$392
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$649
From Barcelona-El Prat to Ontario
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One-way flight from Barcelona-El Prat to Ontario
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Highest demand for flights based on searches. 14% potential increase in price ($119 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 septiembre 11, 2025.

This lol.travel deal was found by Cheapflights users on 9/10. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/1411:00 amBCN - ONT
2 stops20h 31mUnited Airlines
mar. 1/207:00 amONT - BCN
2 stops17h 00mUnited Airlines
Deal found 9/10$560
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1812:20 pmBCN - ONT
1 stop15h 34mAmerican Airlines
mié. 10/110:54 amONT - BCN
1 stop14h 16mAmerican Airlines
Deal found 9/11$578
This Iberia deal was found by Cheapflights users on 9/10. 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.
jue. 11/139:45 amBCN - ONT
2 stops23h 12mIberia
mar. 1/208:43 amONT - BCN
1 stop15h 07mIberia
Deal found 9/10$583
This lol.travel deal was found by Cheapflights users on 9/10. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/86:50 amBCN - ONT
2 stops25h 01mUnited Airlines
sáb. 11/157:00 amONT - BCN
2 stops17h 00mUnited Airlines
Deal found 9/10$586
This lol.travel deal was found by Cheapflights users on 9/9. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/103:15 pmBCN - ONT
1 stop35h 51mUnited Airlines
vie. 10/176:36 pmONT - BCN
1 stop34h 24mUnited Airlines
Deal found 9/9$591
This lol.travel deal was found by Cheapflights users on 9/10. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/2612:00 pmBCN - ONT
2 stops19h 30mUnited Airlines
mar. 9/306:00 amONT - BCN
2 stops18h 00mUnited Airlines
Deal found 9/10$595
This lol.travel deal was found by Cheapflights users on 9/11. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/64:00 pmBCN - ONT
1 stop15h 52mUnited Airlines
dom. 10/198:16 pmONT - BCN
1 stop32h 44mUnited Airlines
Deal found 9/11$600
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/1012:20 pmBCN - ONT
1 stop20h 39mAmerican Airlines
sáb. 10/1812:47 pmONT - BCN
1 stop36h 23mAmerican Airlines
Deal found 9/11$613

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 septiembre 11, 2025.
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

mié. 2/11

10:40 am-10:02 pm

1 stop20h 22m

Ontario

lun. 2/16

6:47 am-8:50 am

1 stop17h 03m

$482

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

sáb. 2/28

10:40 am-9:40 pm

2 stops20h 00m

Ontario

mié. 3/11

6:45 am-7:50 am

2 stops17h 05m

$501

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

vie. 2/27

10:40 am-9:57 pm

1 stop20h 17m

Ontario

mar. 3/3

6:47 am-8:50 am

1 stop17h 03m

$534

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

mar. 1/13

11:00 am-10:26 pm

2 stops20h 26m

Ontario

mar. 1/27

6:00 am-9:00 am

2 stops18h 00m

$537

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

vie. 11/14

11:00 am-10:31 pm

2 stops20h 31m

Ontario

mar. 1/20

7:00 am-9:00 am

2 stops17h 00m

$560

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

mié. 2/11

9:55 am-10:53 pm

2 stops21h 58m

Ontario

lun. 2/16

5:40 am-9:35 am

2 stops18h 55m

$575

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

sáb. 2/28

9:55 am-8:45 pm

2 stops19h 50m

Ontario

mié. 3/11

6:02 am-9:00 am

2 stops18h 58m

$576

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

jue. 11/13

9:15 am-11:57 pm

2 stops23h 42m

Ontario

mié. 1/21

10:57 am-8:50 am

1 stop12h 53m

$583

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

vie. 2/27

10:30 am-8:17 pm

2 stops18h 47m

Ontario

mar. 3/3

5:40 am-9:00 am

2 stops18h 20m

$585

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

mié. 3/4

10:40 am-9:57 pm

1 stop20h 17m

$459

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 20 results
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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, August is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Ontario (average of $246). Flying from Barcelona-El Prat Airport to Ontario in March is currently the most expensive (average of $328). 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 20h 22m. 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.

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

    Currently, August is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Ontario (average of $246). Flying from Barcelona-El Prat Airport to Ontario in March is currently the most expensive (average of $328). 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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