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Ontario

$504+ 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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — ONT
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap 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 January 27, 2026.

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.
Thu 4/236:05 am
MAD
-
ONT
2 stops25h 21m
United Airlines
Sun 4/265:10 am
ONT
-
MAD
2 stops18h 50m
United Airlines
Deal found 1/24$537
This United Airlines deal was found by Cheapflights users on 1/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:30 am
MAD
-
ONT
2 stops21h 20m
United Airlines
Tue 3/245:15 am
ONT
-
MAD
2 stops17h 45m
United Airlines
Deal found 1/26$541
This United Airlines deal was found by Cheapflights users on 1/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/138:35 am
MAD
-
ONT
2 stops22h 22m
United Airlines
Mon 3/161:50 pm
ONT
-
MAD
2 stops18h 00m
United Airlines
Deal found 1/26$543
This Iberia deal was found by Cheapflights users on 1/26. 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.
Mon 4/133:55 pm
MAD
-
ONT
1 stop16h 51m
Iberia
Wed 4/292:08 pm
ONT
-
MAD
1 stop15h 17m
Iberia
Deal found 1/26$547
This American Airlines deal was found by Cheapflights users on 1/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/111:15 pm
MAD
-
ONT
2 stops18h 33m
American Airlines
Sun 2/1510:37 pm
ONT
-
MAD
1 stop22h 08m
American Airlines
Deal found 1/26$552
This United Airlines deal was found by Cheapflights users on 1/27. 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 10/2011:15 am
MAD
-
ONT
2 stops20h 11m
United Airlines
Tue 11/37:00 am
ONT
-
MAD
2 stops17h 15m
United Airlines
Deal found 1/27$553
This United Airlines deal was found by Cheapflights users on 1/25. 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 4/1410:50 am
MAD
-
ONT
2 stops20h 36m
United Airlines
Mon 5/185:00 am
ONT
-
MAD
2 stops16h 50m
United Airlines
Deal found 1/25$555
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Thu 4/2310:50 am
MAD
-
ONT
2 stops20h 55m
United Airlines
Sun 5/35:00 am
ONT
-
MAD
2 stops16h 50m
United Airlines
Deal found 1/27$556
This Vliegwinkel deal was found by Cheapflights users on 1/26. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/21:00 pm
MAD
-
ONT
1 stop34h 18m
Iberia
Mon 2/910:58 am
ONT
-
MAD
1 stop13h 27m
Iberia
Deal found 1/26$562
This Air Canada deal was found by Cheapflights users on 1/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:30 pm
MAD
-
ONT
2 stops18h 56m
Multiple Airlines
Sat 10/105:00 am
ONT
-
MAD
2 stops16h 40m
Multiple Airlines
Deal found 1/25$563
This American Airlines deal was found by Cheapflights users on 1/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1012:10 pm
MAD
-
ONT
2 stops19h 38m
American Airlines
Sat 2/1411:58 pm
ONT
-
MAD
1 stop24h 27m
American Airlines
Deal found 1/25$570

Find 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 January 27, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$537
(United Airlines)

One-way from

$504
(Cheapflightsfares)

Popular in

July

Cheapest in

November

Average price

$988
Provider with most accurate pricing for Madrid Barajas-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Madrid Barajas-Ontario flights.
Search Deals
From Madrid Barajas to Ontario
Search Deals
One-way flight from Madrid Barajas to Ontario
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($255 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($47 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 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 January 27, 2026.
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

Thu 4/23

6:05 am-10:26 pm

2 stops25h 21m

Ontario

Sun 4/26

5:10 am-9:00 am

2 stops18h 50m

$537

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Wed 2/11

8:30 am-12:38 pm

2 stops37h 08m

Ontario

Sun 2/15

5:00 am-9:15 am

2 stops43h 15m

$538

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Wed 3/4

8:30 am-8:50 pm

2 stops21h 20m

Ontario

Tue 3/24

5:15 am-7:00 am

2 stops17h 45m

$541

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Mon 2/16

1:35 pm-8:50 pm

2 stops40h 15m

Ontario

Wed 2/25

6:09 am-9:15 am

2 stops18h 06m

$552

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Tue 4/14

10:50 am-10:26 pm

2 stops20h 36m

Ontario

Mon 5/18

5:00 am-6:50 am

2 stops16h 50m

$555

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Thu 4/23

10:50 am-10:45 pm

2 stops20h 55m

Ontario

Sun 5/3

5:00 am-6:50 am

2 stops16h 50m

$556

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Fri 4/24

10:50 am-10:26 pm

2 stops20h 36m

Ontario

Sun 5/3

5:00 am-6:50 am

2 stops16h 50m

$556

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Thu 4/23

3:55 pm-11:46 pm

1 stop16h 51m

Ontario

Sun 5/3

2:08 pm-2:25 pm

1 stop15h 17m

$571

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Fri 4/24

3:55 pm-11:46 pm

1 stop16h 51m

Ontario

Sun 5/3

2:08 pm-2:25 pm

1 stop15h 17m

$588

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Tue 3/3

12:40 pm-10:49 pm

1 stop19h 09m

Ontario

Wed 4/1

2:39 pm-2:25 pm

1 stop14h 46m

$591

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 22 results
1
2
3
  • Most accurate provider: When it comes to deals on Madrid-Ontario flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Madrid-Ontario flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Madrid-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Madrid-Ontario flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Madrid-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, November is the cheapest month in which you can book a flight from Madrid to Ontario (average of $450). Flying from Madrid to Ontario in July is currently the most expensive (average of $676). 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 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 25h 21m. 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, November is the cheapest month in which you can book a flight from Madrid to Ontario (average of $450). Flying from Madrid to Ontario in July is currently the most expensive (average of $676). 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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