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$271+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MAD
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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Find 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 October 27, 2025.

This Delta deal was found by Cheapflights users on 10/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/810:25 pmONT - MAD
2 stops24h 35mDelta
Wed 12/2411:15 amMAD - ONT
1 stop31h 45mDelta
Deal found 10/27$430
This Iberia deal was found by Cheapflights users on 10/26. 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 12/26:10 amONT - MAD
1 stop15h 05mIberia
Tue 12/912:40 pmMAD - ONT
1 stop18h 48mIberia
Deal found 10/26$438
This American Airlines deal was found by Cheapflights users on 10/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/27:00 amONT - MAD
1 stop14h 15mAmerican Airlines
Fri 1/2312:40 pmMAD - ONT
2 stops18h 33mAmerican Airlines
Deal found 10/27$443
This Air Canada deal was found by Cheapflights users on 10/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:05 amONT - MAD
2 stops17h 55mMultiple Airlines
Fri 1/231:35 pmMAD - ONT
3 stops32h 12mMultiple Airlines
Deal found 10/27$472
This Delta deal was found by Cheapflights users on 10/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/287:05 amONT - MAD
1 stop15h 55mDelta
Fri 12/1211:15 amMAD - ONT
1 stop17h 24mDelta
Deal found 10/27$480
This KLM deal was found by Cheapflights users on 10/26. 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.
Fri 11/287:05 amONT - MAD
1 stop15h 55mKLM
Fri 12/1211:15 amMAD - ONT
1 stop17h 24mKLM
Deal found 10/26$481
This Expedia deal was found by Cheapflights users on 10/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:48 pmONT - MAD
2 stops17h 27mBritish Airways
Thu 11/61:00 pmMAD - ONT
1 stop17h 11mBritish Airways
Deal found 10/25$485
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Tue 12/25:05 amONT - MAD
2 stops17h 55mUnited Airlines
Tue 12/99:05 amMAD - ONT
2 stops22h 44mUnited Airlines
Deal found 10/27$487
This Delta deal was found by Cheapflights users on 10/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/287:05 amONT - MAD
1 stop15h 55mDelta
Thu 12/411:15 amMAD - ONT
1 stop20h 49mDelta
Deal found 10/27$488
This United Airlines deal was found by Cheapflights users on 10/25. 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 11/47:00 amONT - MAD
2 stops16h 05mUnited Airlines
Wed 12/35:55 amMAD - ONT
2 stops25h 54mUnited Airlines
Deal found 10/25$492
This Delta deal was found by Cheapflights users on 10/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1512:16 pmONT - MAD
1 stop35h 59mDelta
Mon 11/2411:15 amMAD - ONT
1 stop20h 49mDelta
Deal found 10/27$493
This KLM deal was found by Cheapflights users on 10/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:05 amONT - LCG
2 stops19h 40mKLM
Thu 12/118:35 amLCG - ONT
2 stops23h 29mKLM
Deal found 10/27$545

Cheap flight deals from Ontario to Spain

Keep the following information in mind while searching for Ontario to Spain flight deals. Data was last updated October 27, 2025.

Round-trip from

$438
(Iberia)

One-way from

$271
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$618
From Ontario to Spain
Search Deals
One-way flight from Ontario to Spain
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($212 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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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 October 27, 2025.
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

Tue 12/2

6:10 am-6:15 am

1 stop15h 05m

Madrid Barajas

Tue 12/9

12:40 pm-10:28 pm

1 stop18h 48m

$438

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 2/17

10:30 pm-9:15 am

1 stop25h 45m

Madrid Barajas

Tue 2/24

11:15 am-9:14 pm

1 stop18h 59m

$443

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 2/8

10:30 pm-8:00 am

2 stops24h 30m

Madrid Barajas

Tue 2/24

10:00 am-11:52 pm

2 stops22h 52m

$443

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 2/17

10:30 pm-9:15 am

1 stop25h 45m

Madrid Barajas

Thu 2/26

11:15 am-9:14 pm

1 stop18h 59m

$443

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 1/18

10:30 pm-9:15 am

1 stop25h 45m

Madrid Barajas

Thu 1/29

11:15 am-9:14 pm

1 stop18h 59m

$443

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 2/8

10:30 pm-8:00 am

2 stops24h 30m

Madrid Barajas

Thu 2/19

10:00 am-11:38 am

2 stops34h 38m

$443

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 2/17

10:30 pm-9:15 am

1 stop25h 45m

Madrid Barajas

Fri 2/27

11:15 am-9:14 pm

1 stop18h 59m

$443

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 2/17

10:30 pm-9:15 am

1 stop25h 45m

Madrid Barajas

Wed 2/25

11:15 am-9:14 pm

1 stop18h 59m

$443

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Fri 2/6

10:30 pm-8:00 am

2 stops48h 30m

Madrid Barajas

Wed 2/25

11:15 am-11:38 am

1 stop33h 23m

$453

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 2/10

6:00 am-11:30 am

2 stops20h 30m

Madrid Barajas

Wed 2/25

11:15 am-11:38 am

1 stop33h 23m

$462

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 60 results
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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, October is the cheapest month in which you can book a flight from Ontario to Spain (average of $347). Flying from Ontario to Spain in June is currently the most expensive (average of $610). 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 ES?

Find hourly flight availability from Ontario to Spain. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 27, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 19% on flights from Ontario to Spain by exploring options for tickets in the afternoon.

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 October 27, 2025.
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
7,996 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

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
7,996 reviews
Delta
7.9
Good
7,996 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

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
8,999 reviews
Delta
7.9
Good
7,996 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

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
11,031 reviews
Delta
7.9
Good
7,996 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

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
3,000 reviews
Delta
7.9
Good
7,996 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

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
7,476 reviews
Delta
7.9
Good
7,996 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

7.9

Crew

8.5

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 Iberia, Delta, and KLM fly from Ontario to Spain in about 15h 05m. The time it takes to get you to your destination can typically vary by up to 10h 40m. 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?

    $395 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on United Airlines and KLM, with prices starting from $399 and $478, 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 - Madrid Barajas or Ontario - A Coruña 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, October is the cheapest month in which you can book a flight from Ontario to Spain (average of $347). Flying from Ontario to Spain in June is currently the most expensive (average of $610). 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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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 October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$444Average$801FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$489Average$842FlexibilityNo cancel feeOn-time70%
IberiaCheapest$496Average$926FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$523Average$828FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$621Average$1,174FlexibilityNo cancel feeOn-time71%

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