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Ontario

$424+ Cheap flights from Spain 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — ONT
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
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Cheap flight deals from Spain to Ontario

Keep the following information in mind while searching for Spain to Ontario flight deals. Data was last updated June 30, 2025.

Round-trip from

$468
(British Airways)

One-way from

$424
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$776
From Spain to Ontario
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One-way flight from Spain to Ontario
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Highest demand for flights based on searches. 14% potential increase in price ($124 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 June 2025
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Find flight deals from Spain to Ontario

Cheapest flights from Spain to Ontario
Explore the most affordable flight options available from Spain to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 30, 2025.

This British Airways deal was found by Cheapflights users on 6/29. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/112:40 pmMAD - ONT
1 stop15h 14mBritish Airways
Tue 10/214:49 pmONT - MAD
2 stops18h 06mBritish Airways
Deal found 6/29$468
This Iberia deal was found by Cheapflights users on 6/29. 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.
Mon 10/612:20 pmBCN - ONT
1 stop18h 58mIberia
Tue 10/148:15 amONT - BCN
1 stop16h 55mIberia
Deal found 6/29$476
This British Airways deal was found by Cheapflights users on 6/30. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/212:20 pmBCN - ONT
1 stop19h 28mBritish Airways
Tue 9/168:15 amONT - BCN
1 stop16h 55mBritish Airways
Deal found 6/30$477
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Sat 9/61:00 pmMAD - ONT
1 stop17h 24mAmerican Airlines
Sun 9/1410:35 pmONT - MAD
1 stop21h 55mAmerican Airlines
Deal found 6/28$498
This Iberia deal was found by Cheapflights users on 6/29. 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.
Wed 9/312:40 pmMAD - ONT
1 stop15h 14mIberia
Mon 9/810:53 amONT - MAD
1 stop13h 12mIberia
Deal found 6/29$516
This Iberia deal was found by Cheapflights users on 6/29. 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.
Thu 10/29:10 amAGP - ONT
2 stops18h 44mIberia
Tue 10/212:51 pmONT - AGP
2 stops17h 09mIberia
Deal found 6/29$543
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Tue 9/210:45 amBCN - ONT
2 stops21h 03mAmerican Airlines
Mon 9/1510:53 amONT - BCN
1 stop14h 17mAmerican Airlines
Deal found 6/30$635
This Finnair deal was found by Cheapflights users on 6/28. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/611:35 amMAD - ONT
2 stops19h 58mMultiple Airlines
Sun 9/148:15 amONT - MAD
1 stop21h 05mMultiple Airlines
Deal found 6/28$667
This Orbitz deal was found by Cheapflights users on 6/29. 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.
Fri 10/31:00 amAGP - ONT
2 stops26h 54mMultiple Airlines
Sat 10/185:02 pmONT - AGP
2 stops32h 03mMultiple Airlines
Deal found 6/29$716
This British Airways deal was found by Cheapflights users on 6/29. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/77:50 pmAGP - ONT
2 stops36h 55mBritish Airways
Tue 11/116:38 amONT - AGP
2 stops26h 32mBritish Airways
Deal found 6/29$762
This Delta deal was found by Cheapflights users on 6/29. 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.
Sat 10/48:25 pmAGP - ONT
2 stops34h 58mDelta
Sat 10/187:00 amONT - AGP
2 stops19h 45mDelta
Deal found 6/29$778
This United Airlines deal was found by Cheapflights users on 6/27. 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.
Thu 11/136:30 amBIO - ONT
3 stops49h 15mUnited Airlines
Mon 11/175:40 amONT - BIO
2 stops26h 00mUnited Airlines
Deal found 6/27$778

Cheapflights Fare Finder

Customize your flight search to find flights from Spain 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 June 30, 2025.
Use the filters below to find and compare flights from Spain to Ontario that are best for you.

Fly from

Spain

Fly to

Ontario

Route

Depart

Return

Price

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Wed 10/1

12:40 pm-6:54 pm

1 stop15h 14m

Ontario

Thu 10/16

4:49 pm-7:55 pm

2 stops18h 06m

$468

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Mon 10/6

12:20 pm-10:18 pm

1 stop18h 58m

Ontario

Tue 10/14

8:15 am-10:10 am

1 stop16h 55m

$476

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Tue 9/2

12:20 pm-10:48 pm

1 stop19h 28m

Ontario

Tue 9/16

8:15 am-10:10 am

1 stop16h 55m

$477

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Sat 9/6

1:00 pm-9:24 pm

1 stop17h 24m

Ontario

Sun 9/14

10:35 pm-5:30 am

1 stop21h 55m

$498

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Wed 9/3

12:40 pm-6:54 pm

1 stop15h 14m

Ontario

Mon 9/8

10:53 am-9:05 am

1 stop13h 12m

$516

MálagaOntario

AGP - ONT

AGPONT

Malaga

Thu 10/2

9:10 am-6:54 pm

2 stops18h 44m

Ontario

Tue 10/21

2:51 pm-5:00 pm

2 stops17h 09m

$543

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

Tue 9/2

10:45 am-10:48 pm

2 stops21h 03m

Ontario

Mon 9/15

10:53 am-10:10 am

1 stop14h 17m

$635

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Sat 9/6

11:35 am-10:33 pm

2 stops19h 58m

Ontario

Sun 9/14

8:15 am-2:20 pm

1 stop21h 05m

$667

MálagaOntario

AGP - ONT

AGPONT

Malaga

Fri 10/3

1:00 am-6:54 pm

2 stops26h 54m

Ontario

Sat 10/18

5:02 pm-10:05 am

2 stops32h 03m

$716

MálagaOntario

AGP - ONT

AGPONT

Malaga

Fri 11/7

7:50 pm-11:45 pm

2 stops36h 55m

Ontario

Tue 11/11

6:38 am-6:10 pm

2 stops26h 32m

$762

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 59 results
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Best time to book a flight from Spain to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Spain 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 Spain to Ontario

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

Currently, August is the cheapest month in which you can book a flight from Spain to Ontario (average of $246). Flying from Spain 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.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated June 30, 2025.
See what other customers who have flown with Delta, KLM, and United Airlines from Spain to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,365 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,852 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Iberia
7.0
Good
2,810 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Spain 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 Spain?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Ontario from Spain.

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

    For one-way options, check prices for Iberia. According to our data, you can fly for as low as $685. Users have also found prices from $764 and $788 on Avianca and KLM, respectively.

  • What are the most popular routes from Spain to Ontario?

    The most popular route from Spain to Ontario is Barcelona-El Prat - Ontario. You may also consider Madrid Barajas - Ontario or Malaga - Ontario.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Spain 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 Spain to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Spain to Ontario (average of $246). Flying from Spain 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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Alternative routes for Spain to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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