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Barcelona-El Prat

$391+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BCN
Jun 21 — Jun 281
Sun 6/21
Sun 6/28
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 May 22, 2026.

This KLM deal was found by Cheapflights users on 5/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/3012:02 pm
ONT
-
BCN
1 stop14h 08m
KLM
Wed 7/811:00 am
BCN
-
ONT
1 stop16h 23m
KLM
Deal found 5/20$706
This FlightHub deal was found by Cheapflights users on 5/18. 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 8/207:10 am
ONT
-
BCN
2 stops30h 00m
Multiple Airlines
Thu 9/38:00 am
BCN
-
ONT
2 stops23h 35m
Multiple Airlines
Deal found 5/18$909
This FlightHub deal was found by Cheapflights users on 5/18. 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.
Mon 6/111:15 am
ONT
-
BCN
2 stops19h 45m
Multiple Airlines
Thu 6/118:00 am
BCN
-
ONT
2 stops24h 51m
Multiple Airlines
Deal found 5/18$916
This Expedia deal was found by Cheapflights users on 5/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:00 am
ONT
-
BCN
2 stops24h 00m
Multiple Airlines
Thu 6/48:00 am
BCN
-
ONT
2 stops21h 47m
Multiple Airlines
Deal found 5/19$938
This Gotogate deal was found by Cheapflights users on 5/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3110:47 am
ONT
-
BCN
2 stops26h 23m
Multiple Airlines
Thu 9/108:00 am
BCN
-
ONT
2 stops21h 24m
Multiple Airlines
Deal found 5/22$949
This FlightHub deal was found by Cheapflights users on 5/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:54 am
ONT
-
BCN
2 stops20h 06m
Multiple Airlines
Sat 9/58:00 am
BCN
-
ONT
2 stops18h 10m
Multiple Airlines
Deal found 5/20$960
This Booking.com deal was found by Cheapflights users on 5/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:00 am
ONT
-
BCN
2 stops30h 10m
Multiple Airlines
Thu 6/48:00 am
BCN
-
ONT
2 stops24h 56m
Multiple Airlines
Deal found 5/21$977
This Gotogate deal was found by Cheapflights users on 5/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2210:45 am
ONT
-
BCN
2 stops20h 20m
Multiple Airlines
Sat 9/58:00 am
BCN
-
ONT
2 stops18h 10m
Multiple Airlines
Deal found 5/20$1,020
This FlightHub deal was found by Cheapflights users on 5/18. 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.
Mon 6/111:15 am
ONT
-
BCN
2 stops19h 45m
Multiple Airlines
Sat 6/138:00 am
BCN
-
ONT
2 stops24h 51m
Multiple Airlines
Deal found 5/18$1,023
This Condor deal was found by Cheapflights users on 5/21. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:15 am
ONT
-
BCN
2 stops25h 55m
Multiple Airlines
Sun 6/710:25 am
BCN
-
ONT
2 stops22h 15m
Multiple Airlines
Deal found 5/21$1,024

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 May 22, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$706
(KLM)

One-way from

$391
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,094
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. 13% potential increase in price ($161 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 22, 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

Sun 8/2

11:48 am-12:50 pm

1 stop16h 02m

Barcelona-El Prat

Wed 8/19

1:20 pm-10:45 pm

1 stop18h 25m

$1,093

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 9/28

9:10 pm-5:40 pm

2 stops35h 30m

Barcelona-El Prat

Tue 10/6

7:40 am-11:42 pm

2 stops25h 02m

$1,098

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 10/6

7:00 am-11:10 am

1 stop19h 10m

Barcelona-El Prat

Sun 10/11

1:20 pm-10:43 pm

1 stop18h 23m

$1,115

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 9/23

10:25 am-10:10 am

1 stop14h 45m

Barcelona-El Prat

Sat 10/3

10:45 am-6:57 pm

1 stop17h 12m

$1,120

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Fri 8/7

11:50 pm-5:40 pm

2 stops32h 50m

Barcelona-El Prat

Mon 8/17

7:40 am-11:11 pm

2 stops24h 31m

$1,137

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 10/6

2:14 pm-10:45 am

2 stops35h 31m

Barcelona-El Prat

Sun 10/11

7:40 am-11:42 pm

2 stops25h 02m

$1,167

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Thu 10/8

7:00 am-11:10 am

1 stop19h 10m

Barcelona-El Prat

Sat 10/17

6:20 am-10:43 pm

2 stops25h 23m

$1,170

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sat 8/1

12:00 pm-12:50 pm

1 stop15h 50m

Barcelona-El Prat

Sat 8/22

11:00 am-6:29 pm

1 stop16h 29m

$1,203

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 9/1

11:50 pm-11:15 pm

2 stops38h 25m

Barcelona-El Prat

Fri 9/11

7:40 am-8:13 pm

2 stops45h 33m

$1,207

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Fri 8/7

11:56 am-12:50 pm

1 stop15h 54m

Barcelona-El Prat

Thu 8/20

11:00 am-9:52 pm

1 stop19h 52m

$1,236

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/20

Showing 1-10 of 24 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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
BusinessClassPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 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 Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Ontario-Barcelona-El Prat Airport flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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

How much does it cost to fly round-trip from Ontario to Barcelona-El Prat Airport?

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 May 22, 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
9,752 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,752 reviews
United Airlines
7.4
Good
9,752 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Iberia
7.0
Good
3,220 reviews
United Airlines
7.4
Good
9,752 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
British Airways
6.7
Okay
7,995 reviews
United Airlines
7.4
Good
9,752 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 Delta and United Airlines fly from Ontario to Barcelona-El Prat Airport in about 16h 02m. The time it takes to get you to your destination can typically vary by up to 13h 40m. 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 $587, 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 43% lower than the current average price of a flight leaving 3 months from now.

  • 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.

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

Browse thousands of different options on Cheapflights for your next trip

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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 May 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$587Average$737FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$682Average$1,075FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$747Average$969FlexibilityNo cancel feeOn-time70%

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