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$275+ Cheap flights from Ontario (ONT) to Spain

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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MAD
Mar 19 — Mar 261
Thu 3/19
Thu 3/26
1 adult, Economy
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Cheap flight deals from Ontario to Spain

Cheapest flights from Ontario to Spain
Explore the most affordable flight options available from Ontario to Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 17, 2026.

This oojo deal was found by Cheapflights users on 2/17. 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.
Tue 3/243:19 pm
ONT
-
MAD
2 stops19h 11m
British Airways
Tue 4/2110:25 am
MAD
-
ONT
1 stop19h 02m
British Airways
Deal found 2/17$512
This United Airlines deal was found by Cheapflights users on 2/17. 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.
Mon 3/91:50 pm
ONT
-
MAD
2 stops33h 10m
United Airlines
Tue 3/1712:40 pm
MAD
-
ONT
2 stops41h 38m
United Airlines
Deal found 2/17$514
This oojo deal was found by Cheapflights users on 2/16. 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 4/1212:19 pm
ONT
-
MAD
2 stops36h 21m
British Airways
Wed 4/225:30 pm
MAD
-
ONT
2 stops31h 52m
British Airways
Deal found 2/16$518
This United Airlines deal was found by Cheapflights users on 2/17. 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.
Sat 9/267:00 am
ONT
-
MAD
2 stops38h 50m
United Airlines
Tue 10/61:30 pm
MAD
-
ONT
2 stops41h 56m
United Airlines
Deal found 2/17$519
This United Airlines deal was found by Cheapflights users on 2/16. 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.
Fri 10/96:53 pm
ONT
-
MAD
2 stops52h 12m
United Airlines
Fri 10/3012:35 pm
MAD
-
ONT
2 stops41h 51m
United Airlines
Deal found 2/16$521
This Delta deal was found by Cheapflights users on 2/14. 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.
Wed 10/287:00 am
ONT
-
MAD
1 stop17h 15m
Delta
Tue 11/1011:15 am
MAD
-
ONT
1 stop19h 59m
Delta
Deal found 2/14$525
This KLM deal was found by Cheapflights users on 2/14. 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.
Wed 10/287:00 am
ONT
-
MAD
1 stop17h 15m
KLM
Wed 11/116:00 am
MAD
-
ONT
2 stops19h 12m
KLM
Deal found 2/14$527
This oojo deal was found by Cheapflights users on 2/15. 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 4/1211:59 pm
ONT
-
MAD
1 stop24h 06m
British Airways
Tue 4/289:00 pm
MAD
-
ONT
2 stops30h 30m
British Airways
Deal found 2/15$528
This United Airlines deal was found by Cheapflights users on 2/16. 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 3/35:00 am
ONT
-
MAD
2 stops19h 15m
United Airlines
Thu 3/1911:15 am
MAD
-
ONT
2 stops19h 03m
United Airlines
Deal found 2/16$530
This Delta deal was found by Cheapflights users on 2/14. 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.
Tue 4/142:20 pm
ONT
-
MAD
2 stops33h 50m
Delta
Thu 4/2312:45 pm
MAD
-
ONT
1 stop17h 15m
Delta
Deal found 2/14$531
This Delta deal was found by Cheapflights users on 2/14. 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 4/1810:15 pm
ONT
-
MAD
1 stop29h 00m
Delta
Tue 4/281:05 pm
MAD
-
ONT
2 stops36h 20m
Delta
Deal found 2/14$533
This oojo deal was found by Cheapflights users on 2/14. 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.
Mon 4/134:52 pm
ONT
-
VLC
2 stops17h 53m
British Airways
Mon 4/278:30 pm
VLC
-
ONT
2 stops31h 07m
British Airways
Deal found 2/14$542

Find flight deals from Ontario to Spain

Keep the following information in mind while searching for Ontario to Spain flight deals. Data was last updated February 17, 2026.

Round-trip from

$512
(oojo)

One-way from

$275
(Finnair)

Popular in

June

Cheapest in

October

Average price

$668
From Ontario to Spain
Search Deals
One-way flight from Ontario to Spain
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($164 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Spain 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 17, 2026.
Use the filters below to find and compare flights from Ontario to Spain that are best for you.

Fly from

Ontario

Fly to

Spain

Route

Depart

Return

Price

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 4/12

7:00 am-8:05 am

2 stops16h 05m

Madrid Barajas

Tue 4/28

10:50 am-10:26 pm

2 stops20h 36m

$530

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 3/3

5:00 am-9:15 am

2 stops19h 15m

Madrid Barajas

Wed 3/11

11:15 am-10:18 pm

2 stops19h 03m

$530

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 3/3

5:00 am-9:15 am

2 stops19h 15m

Madrid Barajas

Tue 3/10

11:15 am-10:18 pm

2 stops19h 03m

$530

OntarioValencia

ONT - VLC

ONTVLC

Ontario

Mon 4/13

4:52 pm-7:45 pm

2 stops17h 53m

Valencia

Mon 4/27

8:30 pm-6:37 pm

2 stops31h 07m

$542

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Fri 4/10

1:43 pm-8:05 am

2 stops57h 22m

Madrid Barajas

Mon 4/20

12:45 pm-10:26 pm

2 stops42h 41m

$571

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 3/3

5:00 am-9:15 am

2 stops19h 15m

Madrid Barajas

Sun 3/8

11:15 am-10:18 pm

2 stops19h 03m

$580

OntarioMálaga

ONT - AGP

ONTAGP

Ontario

Thu 4/9

7:30 am-12:45 pm

2 stops20h 15m

Malaga

Thu 4/16

9:10 am-11:46 pm

2 stops23h 36m

$591

OntarioValencia

ONT - VLC

ONTVLC

Ontario

Fri 4/10

5:09 pm-11:00 pm

2 stops20h 51m

Valencia

Mon 4/20

6:35 am-9:00 pm

2 stops23h 25m

$592

OntarioValencia

ONT - VLC

ONTVLC

Ontario

Wed 4/29

4:52 pm-8:35 pm

2 stops18h 43m

Valencia

Sun 5/3

9:20 pm-10:36 pm

2 stops34h 16m

$592

OntarioValencia

ONT - VLC

ONTVLC

Ontario

Wed 4/22

4:52 pm-8:35 pm

2 stops18h 43m

Valencia

Sun 5/3

9:20 pm-10:36 pm

2 stops34h 16m

$592

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Showing 1-10 of 60 results
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6

Best time to book a flight from Ontario to Spain

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

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

Currently, February is the cheapest month in which you can book a flight from Ontario to Spain (average of $336). Flying from Ontario to Spain in June is currently the most expensive (average of $612). 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 Spain

Get insights into the airlines that provide service to Spain. 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 Spain. Reviews last updated February 17, 2026.
Read through reviews of airlines operating flights from Ontario to Spain, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,207 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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
7.9
Good
8,207 reviews
Delta
7.9
Good
8,207 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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
9,314 reviews
Delta
7.9
Good
8,207 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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.
American Airlines
7.2
Good
11,304 reviews
Delta
7.9
Good
8,207 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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.
Iberia
7.0
Good
3,117 reviews
Delta
7.9
Good
8,207 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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.
British Airways
6.7
Okay
7,751 reviews
Delta
7.9
Good
8,207 reviews

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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 Spain. 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 Spain?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Spain. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • How long is the flight from Ontario to Spain?

    Airlines like United Airlines, British Airways, and Iberia fly from Ontario to Spain in about 16h 05m. The time it takes to get you to your destination can typically vary by up to 8h 51m. Airlines will cover a distance of 5790 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    When deciding which route to take from Ontario to Spain consider Ontario - Barcelona-El Prat, Ontario - Madrid Barajas or Ontario - Palma de Mallorca Son Sant Joan as they are the most popular.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Ontario to Spain (average of $336). Flying from Ontario to Spain in June is currently the most expensive (average of $612). 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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See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Ontario to Spain

Discover the top 5 airlines that operate flights from Ontario to Spain. 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 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$439Average$1,059FlexibilityNo cancel feeOn-time71%
DeltaCheapest$444Average$873FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$497Average$862FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$504Average$956FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$688Average$1,102FlexibilityNo cancel feeOn-time69%

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