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$456+ 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
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
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 December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:30 amBCN - ONT
2 stops21h 11mUnited Airlines
Thu 1/86:00 amONT - BCN
2 stops18h 00mUnited Airlines
Deal found 12/10$1,059
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:30 amBCN - ONT
2 stops21h 11mUnited Airlines
Sat 1/106:00 amONT - BCN
2 stops18h 00mUnited Airlines
Deal found 12/11$1,095
This Air Canada deal was found by Cheapflights users on 12/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/161:35 pmBCN - ONT
3 stops31h 57mMultiple Airlines
Sun 1/185:05 amONT - BCN
2 stops19h 30mMultiple Airlines
Deal found 12/11$1,111
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1611:00 amBCN - ONT
2 stops18h 42mUnited Airlines
Sun 1/185:05 amONT - BCN
2 stops18h 55mUnited Airlines
Deal found 12/11$1,113
This Air Canada deal was found by Cheapflights users on 12/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/161:35 pmBCN - ONT
3 stops31h 57mMultiple Airlines
Sun 1/255:05 amONT - BCN
2 stops19h 30mMultiple Airlines
Deal found 12/11$1,134
This American Airlines deal was found by Cheapflights users on 12/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:30 pmBCN - ONT
2 stops32h 23mAmerican Airlines
Thu 1/810:58 amONT - BCN
1 stop12h 52mAmerican Airlines
Deal found 12/10$1,135
This Air Canada deal was found by Cheapflights users on 12/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/161:35 pmBCN - ONT
3 stops31h 57mAir Canada
Sun 1/255:05 amONT - BCN
3 stops19h 30mAir Canada
Deal found 12/11$1,140
This American Airlines deal was found by Cheapflights users on 12/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:30 pmBCN - ONT
2 stops32h 23mAmerican Airlines
Fri 1/910:58 amONT - BCN
1 stop12h 52mAmerican Airlines
Deal found 12/10$1,153
This Air Canada deal was found by Cheapflights users on 12/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/161:35 pmBCN - ONT
3 stops31h 57mAir Canada
Sun 1/185:05 amONT - BCN
3 stops19h 30mAir Canada
Deal found 12/11$1,175
This KLM deal was found by Cheapflights users on 12/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:55 amBCN - ONT
1 stop17h 55mKLM
Thu 1/17:05 amONT - BCN
1 stop15h 10mKLM
Deal found 12/10$1,336
This KLM deal was found by Cheapflights users on 12/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1410:55 amBCN - ONT
1 stop17h 44mKLM
Sun 12/287:05 amONT - BCN
1 stop16h 35mKLM
Deal found 12/11$1,342
This KLM deal was found by Cheapflights users on 12/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:55 amBCN - ONT
1 stop17h 44mKLM
Thu 12/257:05 amONT - BCN
1 stop15h 10mKLM
Deal found 12/10$1,403

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 December 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$717
(Gotogate)

One-way from

$456
(Finnair)

Popular in

July

Cheapest in

February

Average price

$729
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. 15% potential increase in price ($123 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 December 2025
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 December 12, 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

Thu 1/22

10:40 am-6:45 pm

1 stop17h 05m

Ontario

Thu 2/5

7:16 am-8:50 am

1 stop16h 34m

$728

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Mon 3/2

10:40 am-10:49 pm

1 stop21h 09m

Ontario

Mon 3/9

7:00 am-7:50 am

1 stop16h 50m

$728

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Thu 1/15

10:40 am-6:45 pm

1 stop17h 05m

Ontario

Wed 1/28

10:58 am-8:50 am

1 stop12h 52m

$728

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Sun 2/1

10:40 am-10:48 pm

1 stop21h 08m

Ontario

Tue 2/17

7:10 am-8:50 am

1 stop16h 40m

$746

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Thu 2/5

1:35 pm-8:58 pm

2 stops40h 23m

Ontario

Mon 2/9

6:10 am-9:00 am

2 stops17h 50m

$754

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Sun 2/1

10:40 am-6:45 pm

1 stop17h 05m

Ontario

Sun 2/15

10:59 am-8:50 am

1 stop12h 51m

$763

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Sun 2/1

10:40 am-6:45 pm

1 stop17h 05m

Ontario

Sun 2/15

10:59 am-8:50 am

1 stop12h 51m

$763

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Tue 2/3

6:50 am-5:55 pm

2 stops20h 05m

Ontario

Tue 5/19

6:00 am-2:00 pm

1 stop23h 00m

$775

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Thu 2/5

5:50 am-5:43 pm

2 stops20h 53m

Ontario

Mon 5/18

11:05 am-2:00 pm

1 stop17h 55m

$775

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Sun 2/1

6:50 am-10:53 pm

2 stops25h 03m

Ontario

Sun 5/17

11:05 am-2:00 pm

1 stop17h 55m

$775

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

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 $598). 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 17h 05m. 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, 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 $598). 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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