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$324+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MAD
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
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 March 24, 2026.

This KLM deal was found by Cheapflights users on 3/23. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2212:49 pm
ONT
-
MAD
1 stop14h 26m
KLM
Wed 4/2912:45 pm
MAD
-
ONT
1 stop17h 15m
KLM
Deal found 3/23$685
This KLM deal was found by Cheapflights users on 3/22. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:49 pm
ONT
-
MAD
1 stop14h 26m
KLM
Wed 4/2912:45 pm
MAD
-
ONT
1 stop17h 15m
KLM
Deal found 3/22$694
This United Airlines deal was found by Cheapflights users on 3/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 am
ONT
-
MAD
2 stops16h 05m
United Airlines
Wed 4/228:25 am
MAD
-
ONT
2 stops23h 20m
United Airlines
Deal found 3/20$699
This oojo deal was found by Cheapflights users on 3/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:10 am
ONT
-
MAD
1 stop18h 10m
British Airways
Tue 11/1012:40 pm
MAD
-
ONT
1 stop17h 31m
British Airways
Deal found 3/20$709
This oojo deal was found by Cheapflights users on 3/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:59 pm
ONT
-
MAD
1 stop24h 06m
British Airways
Wed 10/2112:20 pm
MAD
-
ONT
1 stop30h 09m
British Airways
Deal found 3/23$714
This Air France deal was found by Cheapflights users on 3/20. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:00 pm
ONT
-
MAD
1 stop15h 15m
Multiple Airlines
Wed 10/219:50 am
MAD
-
ONT
1 stop17h 28m
Multiple Airlines
Deal found 3/20$720
This oojo deal was found by Cheapflights users on 3/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:59 pm
ONT
-
MAD
1 stop24h 06m
British Airways
Wed 4/2910:25 am
MAD
-
ONT
1 stop19h 42m
British Airways
Deal found 3/21$730
This Iberia deal was found by Cheapflights users on 3/23. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/212:08 pm
ONT
-
MAD
1 stop15h 17m
Iberia
Wed 4/293:55 pm
MAD
-
ONT
1 stop16h 51m
Iberia
Deal found 3/23$735
This Delta deal was found by Cheapflights users on 3/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1910:15 pm
ONT
-
MAD
1 stop29h 00m
Delta
Mon 5/412:45 pm
MAD
-
ONT
1 stop17h 15m
Delta
Deal found 3/20$736
This Delta deal was found by Cheapflights users on 3/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/142:00 pm
ONT
-
AGP
2 stops19h 40m
Delta
Tue 10/205:55 am
AGP
-
ONT
2 stops25h 48m
Delta
Deal found 3/20$764
This United Airlines deal was found by Cheapflights users on 3/22. 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.
Wed 11/187:00 am
ONT
-
BIO
2 stops31h 05m
United Airlines
Sun 11/226:45 am
BIO
-
ONT
2 stops25h 21m
United Airlines
Deal found 3/22$780
This United Airlines deal was found by Cheapflights users on 3/22. 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.
Wed 11/185:00 am
ONT
-
VLC
2 stops27h 30m
United Airlines
Sun 11/226:00 am
VLC
-
ONT
2 stops26h 06m
United Airlines
Deal found 3/22$792

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 March 24, 2026.

Round-trip from

$685
(KLM)

One-way from

$324
(Cheapflightsfares)

Popular in

June

Cheapest in

September

Average price

$804
From Ontario to Spain
Search Deals
One-way flight from Ontario to Spain
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($170 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 24, 2026.
Use the filters below to find and compare flights from Ontario to Spain that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 4/19

10:15 pm-12:15 pm

1 stop29h 00m

Madrid Barajas

Mon 5/4

12:45 pm-11:36 am

1 stop31h 51m

$740

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 4/28

7:00 am-8:05 am

2 stops16h 05m

Madrid Barajas

Mon 5/4

1:30 pm-10:35 pm

2 stops18h 05m

$757

OntarioPalma de Mallorca

ONT - PMI

ONTPMI

Ontario

Tue 4/21

1:34 pm-3:15 pm

2 stops16h 41m

Palma de Mallorca Son Sant Joan

Tue 4/28

4:05 pm-5:47 pm

2 stops34h 42m

$815

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Wed 4/22

1:34 pm-5:55 pm

2 stops19h 21m

Bilbao

Mon 5/4

6:50 am-5:52 pm

2 stops20h 02m

$840

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Wed 8/12

1:18 pm-5:15 pm

2 stops18h 57m

Bilbao

Fri 8/21

6:45 am-6:11 pm

2 stops20h 26m

$847

OntarioMálaga

ONT - AGP

ONTAGP

Ontario

Sun 5/10

1:35 pm-4:35 pm

2 stops18h 00m

Malaga

Thu 5/21

6:00 am-10:34 pm

2 stops25h 34m

$850

OntarioMálaga

ONT - AGP

ONTAGP

Ontario

Sun 5/10

1:35 pm-4:35 pm

2 stops18h 00m

Malaga

Tue 5/19

5:55 am-4:17 pm

2 stops19h 22m

$850

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Tue 4/21

1:34 pm-5:10 pm

2 stops18h 36m

Bilbao

Mon 5/4

2:10 pm-10:59 pm

2 stops17h 49m

$852

OntarioValencia

ONT - VLC

ONTVLC

Ontario

Thu 4/23

7:00 am-12:05 pm

2 stops20h 05m

Valencia

Thu 4/30

12:55 pm-10:59 pm

2 stops19h 04m

$853

OntarioValencia

ONT - VLC

ONTVLC

Ontario

Sat 4/18

1:34 pm-5:35 pm

2 stops43h 01m

Valencia

Mon 5/4

12:45 pm-10:59 pm

2 stops19h 14m

$858

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/19

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
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 $334). Flying from Ontario to Spain in June 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.

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 March 24, 2026.
Read through reviews of airlines operating flights from Ontario to Spain, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,322 reviews

Entertainment

7.8

Overall

7.9

Boarding

8.1

Comfort

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
8,322 reviews
Delta
7.9
Good
8,322 reviews

Entertainment

7.8

Overall

7.9

Boarding

8.1

Comfort

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
9,471 reviews
Delta
7.9
Good
8,322 reviews

Entertainment

7.8

Overall

7.9

Boarding

8.1

Comfort

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
7.1
Good
11,491 reviews
Delta
7.9
Good
8,322 reviews

Entertainment

7.8

Overall

7.9

Boarding

8.1

Comfort

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
3,150 reviews
Delta
7.9
Good
8,322 reviews

Entertainment

7.8

Overall

7.9

Boarding

8.1

Comfort

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
7,815 reviews
Delta
7.9
Good
8,322 reviews

Entertainment

7.8

Overall

7.9

Boarding

8.1

Comfort

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 Delta, United Airlines, and British Airways 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 25h 38m. 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 cheapest airlines to fly from Ontario to Spain one-way?

    $58 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Iberia and KLM, with prices starting from $382 and $825, respectively.

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

    When deciding which route to take from Ontario to Spain consider Ontario - Palma de Mallorca Son Sant Joan, Ontario - Barcelona-El Prat or Ontario - Madrid Barajas 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 $334). Flying from Ontario to Spain in June 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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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 March 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$439Average$833FlexibilityNo cancel feeOn-time71%
DeltaCheapest$444Average$873FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$497Average$757FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$504Average$943FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$682Average$1,102FlexibilityNo cancel feeOn-time69%

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