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Barcelona-El Prat

$383+ Cheap flights from Ontario (ONT) to Barcelona-El Prat (BCN)

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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BCN
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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Cheap flight deals from Ontario to Barcelona-El Prat

Cheapest flights from Ontario to Barcelona-El Prat
Explore the most affordable flight options available from Ontario to Barcelona-El Prat. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.

This FlightHub deal was found by Cheapflights users on 3/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1611:25 pm
ONT
-
BCN
2 stops33h 10m
Turkish Airlines
Mon 5/2512:10 pm
BCN
-
ONT
2 stops41h 35m
Turkish Airlines
Deal found 3/19$829
This Turkish Airlines deal was found by Cheapflights users on 3/19. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:56 pm
ONT
-
BCN
2 stops33h 44m
Turkish Airlines
Sun 9/2012:10 pm
BCN
-
ONT
2 stops42h 19m
Turkish Airlines
Deal found 3/19$847
This Turkish Airlines deal was found by Cheapflights users on 3/18. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:56 pm
ONT
-
BCN
2 stops53h 34m
Turkish Airlines
Wed 10/712:10 pm
BCN
-
ONT
2 stops42h 19m
Turkish Airlines
Deal found 3/18$848
This Justfly.com deal was found by Cheapflights users on 3/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:56 pm
ONT
-
BCN
2 stops29h 34m
Turkish Airlines
Thu 10/112:10 pm
BCN
-
ONT
2 stops42h 19m
Turkish Airlines
Deal found 3/20$854
This FlightHub deal was found by Cheapflights users on 3/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:56 pm
ONT
-
BCN
2 stops50h 49m
Turkish Airlines
Sun 10/1112:10 pm
BCN
-
ONT
2 stops42h 19m
Turkish Airlines
Deal found 3/18$870
This Condor deal was found by Cheapflights users on 3/23. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/71:55 pm
ONT
-
BCN
2 stops23h 15m
Multiple Airlines
Thu 5/148:00 am
BCN
-
ONT
2 stops24h 05m
Multiple Airlines
Deal found 3/23$881
This KAYAK deal was found by Cheapflights users on 3/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1611:25 pm
ONT
-
BCN
2 stops38h 50m
Turkish Airlines
Tue 5/2612:10 pm
BCN
-
ONT
2 stops65h 35m
Turkish Airlines
Deal found 3/19$887
This Turkish Airlines deal was found by Cheapflights users on 3/22. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:59 pm
ONT
-
BCN
2 stops62h 16m
Turkish Airlines
Sat 9/1912:10 pm
BCN
-
ONT
2 stops42h 19m
Turkish Airlines
Deal found 3/22$902
This Turkish Airlines deal was found by Cheapflights users on 3/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:56 pm
ONT
-
BCN
2 stops33h 44m
Multiple Airlines
Sun 10/187:40 am
BCN
-
ONT
2 stops40h 07m
Multiple Airlines
Deal found 3/20$907
This FlightHub deal was found by Cheapflights users on 3/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1110:56 pm
ONT
-
BCN
2 stops26h 49m
Turkish Airlines
Sat 9/1912:10 pm
BCN
-
ONT
2 stops42h 19m
Turkish Airlines
Deal found 3/18$909
This Turkish Airlines deal was found by Cheapflights users on 3/21. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2711:59 pm
ONT
-
BCN
2 stops32h 41m
Multiple Airlines
Thu 8/67:40 am
BCN
-
ONT
2 stops24h 31m
Multiple Airlines
Deal found 3/21$942
This Turkish Airlines deal was found by Cheapflights users on 3/23. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:56 pm
ONT
-
BCN
2 stops26h 49m
Turkish Airlines
Tue 9/297:40 am
BCN
-
ONT
2 stops46h 49m
Turkish Airlines
Deal found 3/23$946

Find flight deals from Ontario to Barcelona-El Prat

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Barcelona-El Prat (BCN). 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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$829
(FlightHub)

One-way from

$383
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$965
Provider with most accurate pricing for Ontario-Barcelona-El Prat flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Barcelona-El Prat flights.
Search Deals
From Ontario to Barcelona-El Prat
Search Deals
One-way flight from Ontario to Barcelona-El Prat
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($224 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Barcelona-El Prat 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 March 23, 2026.
Use the filters below to find and compare flights from Ontario to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 9/14

10:56 pm-11:15 pm

2 stops39h 19m

Barcelona-El Prat

Wed 9/30

7:05 pm-9:29 pm

2 stops59h 24m

$902

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 5/3

12:55 pm-10:10 pm

2 stops24h 15m

Barcelona-El Prat

Sun 5/10

10:25 am-11:35 pm

2 stops22h 10m

$1,000

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sat 9/5

11:59 pm-5:35 pm

2 stops32h 36m

Barcelona-El Prat

Sat 9/12

2:35 pm-9:29 pm

2 stops63h 54m

$1,021

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 5/5

1:30 pm-2:20 pm

1 stop15h 50m

Barcelona-El Prat

Tue 5/12

12:15 pm-10:35 pm

2 stops43h 20m

$1,023

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Fri 5/1

1:30 pm-2:20 pm

1 stop15h 50m

Barcelona-El Prat

Thu 5/7

3:15 pm-10:35 pm

1 stop16h 20m

$1,093

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 5/19

6:45 am-11:10 am

1 stop19h 25m

Barcelona-El Prat

Fri 5/29

1:20 pm-10:34 pm

1 stop18h 14m

$1,120

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Fri 5/1

10:37 am-2:20 pm

1 stop18h 43m

Barcelona-El Prat

Sat 6/6

1:50 pm-10:50 pm

2 stops18h 00m

$1,157

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sat 5/9

10:43 am-2:20 pm

1 stop18h 37m

Barcelona-El Prat

Sun 5/24

8:00 am-5:28 pm

2 stops18h 28m

$1,207

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 8/31

12:00 pm-12:50 pm

1 stop15h 50m

Barcelona-El Prat

Sun 12/20

9:30 am-6:18 pm

1 stop17h 48m

$1,235
Quickest round-trip

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sat 4/25

7:30 am-7:35 am

1 stop15h 05m

Barcelona-El Prat

Sat 5/9

10:45 am-6:38 pm

1 stop16h 53m

$1,295

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/18

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Ontario to Barcelona-El Prat

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 Ontario to Barcelona-El Prat in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars

*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 Ontario-Barcelona-El Prat Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Barcelona-El Prat Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Barcelona-El Prat Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Barcelona-El Prat Airport 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 Ontario-Barcelona-El Prat Airport 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 Ontario to Barcelona-El Prat

Have a flexible travel schedule? Discover the best time to fly to Barcelona-El Prat from Ontario 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 Ontario to Barcelona-El Prat Airport

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

Currently, October is the cheapest month in which you can book a flight from Ontario to Barcelona-El Prat Airport (average of $367). Flying from Ontario to Barcelona-El Prat Airport in June 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.

Reviews of airlines servicing Barcelona-El Prat

Get insights into the airlines that provide service to Barcelona-El Prat. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Barcelona-El Prat. Reviews last updated March 23, 2026.
Read reviews from past customers who have flown United Airlines,Iberia, andBritish Airways from Ontario to Barcelona-El Prat Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,460 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
9,460 reviews
United Airlines
7.4
Good
9,460 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Iberia
7.0
Good
3,147 reviews
United Airlines
7.4
Good
9,460 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
British Airways
6.7
Okay
7,813 reviews
United Airlines
7.4
Good
9,460 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Ontario to Barcelona-El Prat. 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 from for flights from Ontario to Barcelona-El Prat?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Barcelona-El Prat. 3 airlines have flights from Ontario to Barcelona-El Prat on a regular basis. Booking flights from Ontario to Barcelona-El Prat should not be difficult; the airport handles an average of 0 outbound flights to Barcelona-El Prat per day.

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

    Airlines like Turkish Airlines and United Airlines fly from Ontario to Barcelona-El Prat Airport in about 15h 50m. The time it takes to get you to your destination can typically vary by up to 23h 29m. Ontario and Barcelona-El Prat Airport are separated by a distance of 5971 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Ontario to Barcelona-El Prat Airport round-trip?

    Currently priced at $605, Iberia will fly you from Ontario to Barcelona-El Prat Airport and back. In addition to Iberia, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and British Airways - these airlines can fly you to your destination from $682 and $747, respectively. Iberia is priced at 41% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Ontario to Barcelona-El Prat Airport one-way?

    $58 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Iberia and KLM, with prices starting from $382 and $825, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Barcelona-El Prat 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 Ontario to Barcelona-El Prat Airport?

    Currently, October is the cheapest month in which you can book a flight from Ontario to Barcelona-El Prat Airport (average of $367). Flying from Ontario to Barcelona-El Prat Airport in June 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

Traveling to a place near Barcelona-El Prat Airport?

Book flights to Barcelona-El Prat Airport if you plan to visit one of these locations
Roses
Calella
L'Hospitalet de Llobregat
Cadaques
El Prat de Llobregat
Badalona
Pineda de Mar

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Top 3 airlines flying from Ontario to Barcelona-El Prat

Discover the top 3 airlines that operate flights from Ontario to Barcelona-El Prat. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$605Average$783FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$682Average$1,102FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$747Average$969FlexibilityNo cancel feeOn-time70%

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