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Ontario

$388+ Cheap flights from Madrid, Spain (MAD) 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — ONT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Madrid to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Madrid (MAD) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$505
(Iberia)

One-way from

$388
(Kiwi.com)

Popular in

July

Cheapest in

December

Average price

$768
From Madrid Barajas to Ontario
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One-way flight from Madrid Barajas to Ontario
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Highest demand for flights based on searches. 16% potential increase in price ($170 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Madrid to Ontario

Cheapest flights from Madrid to Ontario
Explore the most affordable flight options available from Madrid to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 9/2412:40 pmMAD - ONT
1 stop15h 14mAmerican Airlines
Mon 9/2910:53 amONT - MAD
1 stop13h 12mAmerican Airlines
Deal found 9/10$584
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Wed 9/2412:40 pmMAD - ONT
1 stop15h 14mAmerican Airlines
Sun 9/2810:35 pmONT - MAD
1 stop21h 55mAmerican Airlines
Deal found 9/9$593
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 9/171:00 pmMAD - ONT
2 stops18h 33mAmerican Airlines
Tue 9/3012:47 pmONT - MAD
2 stops15h 38mAmerican Airlines
Deal found 9/10$597
This lol.travel deal was found by Cheapflights users on 9/9. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2410:50 amMAD - ONT
2 stops20h 40mUnited Airlines
Sun 9/286:27 pmONT - MAD
2 stops29h 33mUnited Airlines
Deal found 9/9$599
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Fri 9/2612:40 pmMAD - ONT
1 stop30h 23mAmerican Airlines
Tue 9/302:54 pmONT - MAD
1 stop14h 31mAmerican Airlines
Deal found 9/11$600
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Thu 10/91:00 pmMAD - ONT
1 stop16h 07mAmerican Airlines
Sat 10/1810:57 amONT - MAD
1 stop13h 08mAmerican Airlines
Deal found 9/9$601
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Thu 10/912:40 pmMAD - ONT
1 stop15h 22mAmerican Airlines
Wed 10/1510:57 amONT - MAD
1 stop13h 08mAmerican Airlines
Deal found 9/11$605
This flugladen.de deal was found by Cheapflights users on 9/9. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1812:40 pmMAD - ONT
1 stop15h 14mIberia
Wed 10/110:54 amONT - MAD
1 stop13h 11mIberia
Deal found 9/9$607
This Iberia deal was found by Cheapflights users on 9/10. 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 10/24:00 pmMAD - ONT
1 stop16h 59mIberia
Mon 10/62:51 pmONT - MAD
1 stop14h 34mIberia
Deal found 9/10$608

Cheapflights Fare Finder

 
Customize your flight search to find flights from Madrid 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 September 11, 2025.
Use the filters below to find and compare flights from Madrid to Ontario that are best for you.

Fly from

Madrid

Fly to

Ontario

Route

Depart

Return

Price

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Sat 2/14

8:25 am-9:21 pm

2 stops21h 56m

Ontario

Wed 2/25

6:02 am-9:15 am

2 stops18h 13m

$576

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Fri 2/20

6:00 am-9:21 pm

2 stops24h 21m

Ontario

Tue 2/24

1:00 pm-8:00 am

2 stops34h 00m

$576

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Tue 1/20

6:00 am-8:58 pm

2 stops23h 58m

Ontario

Sun 1/25

6:00 am-9:15 am

2 stops18h 15m

$577

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Wed 1/21

11:15 am-10:26 pm

2 stops20h 11m

Ontario

Sun 1/25

6:00 am-9:15 am

2 stops18h 15m

$589

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Fri 3/6

11:15 am-8:17 pm

2 stops18h 02m

Ontario

Wed 3/11

5:40 am-9:15 am

2 stops19h 35m

$591

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Wed 10/29

5:55 am-8:44 pm

2 stops22h 49m

Ontario

Sat 11/8

5:05 am-8:00 am

2 stops17h 55m

$634

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Mon 11/3

1:35 pm-8:44 pm

2 stops40h 09m

Ontario

Tue 11/18

5:05 am-8:00 am

2 stops17h 55m

$648

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Thu 10/2

11:15 am-8:24 pm

2 stops18h 09m

Ontario

Tue 10/28

5:05 am-8:00 am

2 stops18h 55m

$650

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Mon 2/16

11:15 am-10:26 pm

2 stops20h 11m

Ontario

Fri 2/27

10:40 am-1:25 pm

2 stops17h 45m

$679

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Wed 12/24

5:55 am-9:07 pm

2 stops24h 12m

Ontario

Wed 1/14

6:00 am-9:15 am

2 stops18h 15m

$679

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 21 results
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Best time to book a flight from Madrid to Ontario

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

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

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

How much does it cost to fly round-trip from Madrid to Ontario?

Related info for your journey

Find useful and relevant information for your journey from Madrid to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Madrid to Ontario?

    Departing from Madrid to Ontario will take you 21h 56m. The distance from Madrid to Ontario is about 5790 mi.

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

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

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

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

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

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

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