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Ontario

$366+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — ONT
feb. 23 — mar. 21
lun. 2/23
lun. 3/2
1 adult, Economy
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Cheap 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 enero 24, 2026.

This United Airlines deal was found by Cheapflights users on 1/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/199:55 am
BCN
-
ONT
2 stops21h 02m
United Airlines
lun. 5/111:30 pm
ONT
-
BCN
1 stop15h 50m
United Airlines
Deal found 1/21$531
This United Airlines deal was found by Cheapflights users on 1/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/196:00 am
MAD
-
ONT
2 stops25h 57m
United Airlines
jue. 2/265:00 am
ONT
-
MAD
2 stops19h 15m
United Airlines
Deal found 1/21$532
This United Airlines deal was found by Cheapflights users on 1/24. 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.
jue. 3/199:55 am
BCN
-
ONT
2 stops21h 02m
United Airlines
vie. 5/81:30 pm
ONT
-
BCN
1 stop15h 50m
United Airlines
Deal found 1/24$533
This United Airlines deal was found by Cheapflights users on 1/24. 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.
mié. 4/158:25 am
MAD
-
ONT
2 stops21h 11m
United Airlines
mié. 4/225:10 am
ONT
-
MAD
2 stops18h 50m
United Airlines
Deal found 1/24$534
This United Airlines deal was found by Cheapflights users on 1/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/271:45 pm
MAD
-
ONT
2 stops18h 12m
United Airlines
sáb. 3/71:50 pm
ONT
-
MAD
2 stops32h 10m
United Airlines
Deal found 1/23$535
This United Airlines deal was found by Cheapflights users on 1/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/85:50 am
BCN
-
ONT
2 stops24h 28m
United Airlines
dom. 3/156:15 am
ONT
-
BCN
2 stops29h 35m
United Airlines
Deal found 1/22$536
This United Airlines deal was found by Cheapflights users on 1/24. 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.
mar. 3/109:55 am
BCN
-
ONT
2 stops21h 02m
United Airlines
mar. 3/171:50 pm
ONT
-
BCN
2 stops19h 45m
United Airlines
Deal found 1/24$537
This United Airlines deal was found by Cheapflights users on 1/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/206:45 am
BCN
-
ONT
2 stops24h 12m
United Airlines
vie. 5/810:37 am
ONT
-
BCN
1 stop18h 43m
United Airlines
Deal found 1/21$539
This United Airlines deal was found by Cheapflights users on 1/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/77:25 am
BIO
-
ONT
2 stops24h 28m
United Airlines
mié. 2/115:05 am
ONT
-
BIO
2 stops28h 00m
United Airlines
Deal found 1/22$539
This British Airways deal was found by Cheapflights users on 1/23. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/410:40 am
BCN
-
ONT
1 stop17h 05m
British Airways
jue. 2/197:00 am
ONT
-
BCN
1 stop16h 50m
British Airways
Deal found 1/23$542
This United Airlines deal was found by Cheapflights users on 1/24. 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.
sáb. 4/183:15 pm
BCN
-
ONT
1 stop16h 11m
United Airlines
jue. 4/237:00 am
ONT
-
BCN
1 stop21h 15m
United Airlines
Deal found 1/24$544
This American Airlines deal was found by Cheapflights users on 1/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/91:00 pm
MAD
-
ONT
2 stops18h 59m
American Airlines
lun. 3/1611:58 pm
ONT
-
MAD
1 stop24h 27m
American Airlines
Deal found 1/23$546

Find flight deals from Spain to Ontario

Keep the following information in mind while searching for Spain to Ontario flight deals. Data was last updated enero 24, 2026.

Round-trip from

$531
(United Airlines)

One-way from

$366
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$667
From Spain to Ontario
Search Deals
One-way flight from Spain to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($131 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 January 2026
Search Deals

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 enero 24, 2026.
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

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

jue. 3/19

6:50 am-5:41 pm

2 stops18h 51m

Ontario

sáb. 5/9

10:43 am-2:20 pm

1 stop18h 37m

$531

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

jue. 3/19

6:50 am-5:41 pm

2 stops18h 51m

Ontario

dom. 5/10

10:37 am-2:20 pm

1 stop18h 43m

$531

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

jue. 3/19

9:55 am-10:57 pm

2 stops21h 02m

Ontario

lun. 5/11

1:30 pm-2:20 pm

1 stop15h 50m

$531

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

lun. 3/9

6:50 am-10:57 pm

2 stops24h 07m

Ontario

lun. 3/16

5:15 am-8:20 am

2 stops19h 05m

$531

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

jue. 3/19

9:55 am-10:57 pm

2 stops21h 02m

Ontario

mar. 5/12

1:30 pm-2:20 pm

1 stop15h 50m

$531

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

jue. 2/19

6:00 am-10:57 pm

2 stops25h 57m

Ontario

jue. 2/26

5:00 am-9:15 am

2 stops19h 15m

$532

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

jue. 4/16

8:00 am-10:45 pm

2 stops23h 45m

Ontario

jue. 4/23

7:00 am-1:15 pm

1 stop21h 15m

$533

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

vie. 3/20

6:50 am-10:57 pm

2 stops24h 07m

Ontario

jue. 5/7

10:37 am-2:20 pm

1 stop18h 43m

$533

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

vie. 3/20

6:50 am-10:57 pm

2 stops24h 07m

Ontario

dom. 5/10

7:00 am-1:15 pm

1 stop21h 15m

$533

BarcelonaOntario

BCN - ONT

BCNONT

Barcelona-El Prat

vie. 3/20

6:50 am-10:57 pm

2 stops24h 07m

Ontario

lun. 5/11

10:37 am-2:20 pm

1 stop18h 43m

$533

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Showing 1-10 of 60 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, February is the cheapest month in which you can book a flight from Spain to Ontario (average of $348). Flying from Spain to Ontario in July 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.

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.

  • How long is the flight from Spain to Ontario?

    United Airlines, American Airlines, and Iberia can get you from Spain to Ontario in just under 18h 51m. Your travel time can differ by up to 2h 47m. Spain and Ontario are separated by a distance of 5971 mi. This flight may include one or multiple stops.

  • 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 Bilbao - 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, February is the cheapest month in which you can book a flight from Spain to Ontario (average of $348). Flying from Spain to Ontario in July 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

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