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$396+ Cheap flights from Ontario (ONT) to Barcelona

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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BCN
Feb 9 — Feb 161
Sun 2/9
Sun 2/16
1 adult, Economy
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Cheap flight deals from Ontario to Barcelona

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Barcelona (S37). 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 February 4, 2025.

Round-trip from

$598
(United Airlines)

One-way from

$396
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$773
From Ontario to Barcelona
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One-way flight from Ontario to Barcelona
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Highest demand for flights based on searches. 24% potential increase in price ($272 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Ontario to Barcelona

Cheapest flights from Ontario to Barcelona
Explore the most affordable flight options available from Ontario to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2025.

This United Airlines deal was found by Cheapflights users on 2/4. 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 11/115:45 amONT - BCN
2 stops19h 05mUnited Airlines
Tue 11/1812:15 pmBCN - ONT
3 stops43h 11mUnited Airlines
Deal found 2/4$598
This Air Canada deal was found by Cheapflights users on 2/3. 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.
Mon 3/36:00 amONT - BCN
2 stops18h 50mMultiple Airlines
Tue 3/1811:15 amBCN - ONT
3 stops33h 29mMultiple Airlines
Deal found 2/3$604
This Delta deal was found by Cheapflights users on 2/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/37:05 amONT - BCN
1 stop16h 35mDelta
Tue 3/189:45 amBCN - ONT
1 stop20h 58mDelta
Deal found 2/3$608
This KLM deal was found by Cheapflights users on 2/3. 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.
Mon 3/37:05 amONT - BCN
1 stop16h 35mKLM
Tue 3/189:45 amBCN - ONT
1 stop20h 58mKLM
Deal found 2/3$621
This Orbitz deal was found by Cheapflights users on 2/3. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/195:05 amONT - BCN
2 stops19h 45mAir Canada
Sun 4/61:15 pmBCN - ONT
2 stops30h 50mAir Canada
Deal found 2/3$677
This oojo deal was found by Cheapflights users on 2/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/304:30 pmONT - BCN
2 stops21h 10mBritish Airways
Sat 4/58:00 pmBCN - ONT
2 stops31h 29mBritish Airways
Deal found 2/3$693
This Travelocity deal was found by Cheapflights users on 2/3. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/710:55 amONT - BCN
2 stops26h 55mIberia
Fri 10/1712:30 pmBCN - ONT
2 stops20h 32mIberia
Deal found 2/3$746
This Air France deal was found by Cheapflights users on 2/4. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1112:00 pmONT - BCN
2 stops17h 00mAir France
Tue 11/1810:55 amBCN - ONT
1 stop20h 34mAir France
Deal found 2/4$820

Find flights from Ontario to Barcelona within your budget

Customize your flight search to find flights from Ontario to Barcelona 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 February 4, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 3/3

6:00 am-9:50 am

2 stops18h 50m

Barcelona-El Prat

Tue 3/18

11:15 am-8:57 pm

2 stops41h 42m

$598

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 3/3

6:00 am-9:50 am

2 stops18h 50m

Barcelona-El Prat

Tue 3/18

11:15 am-12:44 pm

3 stops33h 29m

$604

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 3/3

7:05 am-8:40 am

1 stop16h 35m

Barcelona-El Prat

Tue 3/18

9:45 am-10:43 pm

1 stop20h 58m

$608

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 3/3

7:05 am-8:40 am

1 stop16h 35m

Barcelona-El Prat

Tue 3/18

9:45 am-10:43 pm

1 stop20h 58m

$621

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 3/19

5:05 am-8:50 am

2 stops19h 45m

Barcelona-El Prat

Sun 4/6

1:15 pm-11:05 am

2 stops30h 50m

$677

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sun 3/30

6:00 am-10:10 am

1 stop19h 10m

Barcelona-El Prat

Sat 4/5

8:00 pm-6:29 pm

2 stops31h 29m

$801

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Mon 3/24

7:00 am-10:25 pm

2 stops31h 25m

Barcelona-El Prat

Tue 4/1

12:15 pm-11:54 pm

1 stop20h 39m

$851

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Sat 5/10

11:59 pm-10:15 am

1 stop25h 16m

Barcelona-El Prat

Sat 5/24

10:45 am-9:58 pm

2 stops20h 13m

$947

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Tue 4/8

2:43 pm-1:20 pm

3 stops37h 37m

$396

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

Wed 3/26

7:00 am-4:30 pm

2 stops25h 30m

$457

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 19 results
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Best time to book a flight from Ontario to Barcelona

Have a flexible travel schedule? Discover the best time to fly to Barcelona 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.

Travel insights for flights from Ontario to Barcelona

Get recent, data-driven insights about flights from Ontario to Barcelona including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Ontario to Barcelona?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Barcelona. Price data was last updated on January 31, 2025.

The price you pay for your flight from Ontario to Barcelona may vary depending on when you book. For the best chance of a lower fare, look to book 64 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Ontario to Barcelona?

Currently, January is the cheapest month in which you can book a flight from Ontario to Barcelona (average of $523). Flying from Ontario to Barcelona in June is currently the most expensive (average of $1,096). 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.

What is the cheapest time of day to fly from ONT to BCN?

Find hourly flight availability from Ontario to Barcelona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 4, 2025.

It’s typically best to fly out from Ontario to Barcelona in the afternoon. Doing so could potentially save you 18% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Ontario to Barcelona?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Barcelona. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Ontario to Barcelona flight should consider departing on Wednesday at noon when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Barcelona by month

Plan your trip to Barcelona by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Barcelona ranges from 0.8 - 3.6 inches per month. October is typically the wettest month, when rainfall can reach 3.6 in. July is typically the driest time to visit Barcelona when rainfall is around 0.8 in.

Temperature in Barcelona by month

Plan your trip to Barcelona by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Barcelona, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Barcelona

Get insights into the airlines that provide service to Barcelona. 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. Reviews last updated February 4, 2025.
Delta
8.0
Very good
8,415 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,415 reviews
Delta
8.0
Very good
8,415 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
8,415 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic
7.5
Good
658 reviews
Delta
8.0
Very good
8,415 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,469 reviews
Delta
8.0
Very good
8,415 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,890 reviews
Delta
8.0
Very good
8,415 reviews

Boarding

8.2

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Barcelona. 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?

    For a flight from Ontario to Barcelona, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city. Ontario is the only Ontario airport and it handles 0 outbound flights to Barcelona per day. 6 airlines have flights to Barcelona from Ontario on a regular basis.

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

    Currently priced at $598, United Airlines will fly you from Ontario to Barcelona and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and KLM - these airlines can fly you to your destination from $608 and $621, respectively. United Airlines is currently priced 30% below the average price you’ll pay for this route.

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

    One-way options have recently been found by users for as low as $457 on British Airways. Other airlines that offer cheap prices include United Airlines from $458 and Air Canada from $464 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Barcelona 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?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Barcelona (average of $523). Flying from Ontario to Barcelona in June is currently the most expensive (average of $1,096). 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.

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Alternative routes for Ontario to Barcelona

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Top 6 airlines flying from Ontario to Barcelona

Discover the top 6 airlines that operate flights from Ontario to Barcelona. 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 February 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$551Average$936FlexibilityNo cancel feeOn-time70%
DeltaCheapest$567Average$763FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$582Average$987FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$687Average$1,026FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$690Average$1,032FlexibilityNo cancel feeOn-time67%
IberiaCheapest$831Average$1,086FlexibilityNo cancel feeOn-time77%
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