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$329+ Cheap flights from Ontario (ONT) to Madrid, Spain (MAD)

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 7/31. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MAD
Jul 31 — Aug 71
Fri 7/31
Fri 8/7
1 adult, Economy
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Cheap flight deals from Ontario to Madrid

Cheapest flights from Ontario to Madrid
Explore the most affordable flight options available from Ontario to Madrid. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2026.

This KLM deal was found by Cheapflights users on 6/26. 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.
Sun 10/1812:00 pm
ONT
-
MAD
1 stop15h 15m
KLM
Thu 10/2911:55 am
MAD
-
ONT
1 stop18h 19m
KLM
Deal found 6/26$711
This United Airlines deal was found by Cheapflights users on 6/30. 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 10/217:00 am
ONT
-
MAD
2 stops17h 00m
United Airlines
Thu 10/2911:00 am
MAD
-
ONT
2 stops19h 53m
United Airlines
Deal found 6/30$716
This KLM deal was found by Cheapflights users on 6/26. 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 11/137:00 am
ONT
-
MAD
1 stop17h 55m
Multiple Airlines
Sat 11/216:00 am
MAD
-
ONT
2 stops19h 12m
Multiple Airlines
Deal found 6/26$719
This Air France deal was found by Cheapflights users on 6/26. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1312:00 pm
ONT
-
MAD
2 stops20h 45m
Air France
Sat 11/216:00 am
MAD
-
ONT
2 stops19h 12m
Air France
Deal found 6/26$723
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Sun 8/165:00 am
ONT
-
MAD
2 stops16h 50m
United Airlines
Tue 8/2512:45 pm
MAD
-
ONT
2 stops41h 08m
United Airlines
Deal found 7/1$724
This KLM deal was found by Cheapflights users on 6/26. 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.
Tue 10/2012:00 pm
ONT
-
MAD
1 stop15h 15m
KLM
Tue 11/311:55 am
MAD
-
ONT
1 stop19h 19m
KLM
Deal found 6/26$741
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/135:00 am
ONT
-
MAD
2 stops16h 50m
United Airlines
Thu 8/201:05 pm
MAD
-
ONT
2 stops18h 54m
United Airlines
Deal found 7/1$745
This United Airlines deal was found by Cheapflights users on 7/1. 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 9/147:00 am
ONT
-
MAD
2 stops16h 05m
United Airlines
Wed 10/711:15 am
MAD
-
ONT
2 stops20h 34m
United Airlines
Deal found 7/1$746
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Sun 11/156:00 am
ONT
-
MAD
2 stops16h 45m
United Airlines
Wed 11/181:25 pm
MAD
-
ONT
2 stops38h 04m
United Airlines
Deal found 6/28$747
This KLM deal was found by Cheapflights users on 6/26. 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 10/1611:55 am
ONT
-
MAD
2 stops19h 30m
KLM
Sun 11/111:55 am
MAD
-
ONT
1 stop19h 19m
KLM
Deal found 6/26$749
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Sun 9/207:13 pm
ONT
-
MAD
3 stops50h 37m
United Airlines
Tue 10/61:30 pm
MAD
-
ONT
2 stops40h 01m
United Airlines
Deal found 6/28$751

Find flight deals from Ontario to Madrid

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Madrid (MAD). 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 July 1, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$711
(KLM)

One-way from

$329
(United Airlines)

Popular in

June

Cheapest in

August

Average price

$972
Provider with most accurate pricing for Ontario-Madrid Barajas flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Madrid Barajas flights.
Search Deals
From Ontario to Madrid Barajas
Search Deals
One-way flight from Ontario to Madrid Barajas
Search Deals
Highest demand for flights based on searches. 36% potential increase in price ($459 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease ($100 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Madrid 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 July 1, 2026.
Use the filters below to find and compare flights from Ontario to Madrid that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Mon 8/17

12:00 pm-12:15 pm

1 stop15h 15m

Madrid Barajas

Wed 9/2

9:50 am-7:53 pm

1 stop19h 03m

$759

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 8/19

10:29 am-9:05 am

1 stop13h 36m

Madrid Barajas

Wed 10/14

3:55 pm-11:52 pm

1 stop16h 57m

$763

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 11/3

6:00 am-9:15 am

2 stops18h 15m

Madrid Barajas

Wed 11/11

11:00 am-8:56 pm

2 stops18h 56m

$768

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 10/21

10:25 am-9:05 am

1 stop13h 40m

Madrid Barajas

Tue 10/27

11:00 am-7:54 pm

1 stop16h 54m

$819

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Fri 10/23

12:18 pm-12:15 pm

1 stop14h 57m

Madrid Barajas

Fri 10/30

11:55 am-10:01 pm

1 stop18h 06m

$848

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Thu 10/15

10:25 am-9:05 am

1 stop13h 40m

Madrid Barajas

Sat 10/24

12:40 pm-8:04 pm

1 stop16h 24m

$863

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Mon 8/17

7:13 pm-6:50 am

3 stops50h 37m

Madrid Barajas

Thu 8/27

8:20 am-10:59 pm

2 stops23h 39m

$909

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 9/20

7:00 am-9:00 am

2 stops17h 00m

Madrid Barajas

Sun 9/27

5:55 am-10:49 pm

2 stops25h 54m

$920
Quickest round-trip

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 10/20

10:25 am-9:05 am

1 stop13h 40m

Madrid Barajas

Wed 10/28

1:00 pm-9:11 pm

1 stop16h 11m

$922

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 9/23

7:00 am-8:05 am

2 stops16h 05m

Madrid Barajas

Wed 9/30

12:45 pm-8:58 pm

2 stops17h 13m

$930

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Ontario to Madrid

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Madrid in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Madrid flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Ontario-Madrid flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Ontario-Madrid flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Madrid flights, Cheapflights users trust Ovago the most. Ovago 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 Ontario-Madrid 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 Ontario to Madrid

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

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

Currently, August is the cheapest month in which you can book a flight from Ontario to Madrid (average of $516). Flying from Ontario to Madrid in June is currently the most expensive (average of $1,889). 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 Madrid

Get insights into the airlines that provide service to Madrid. 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 Madrid. Reviews last updated July 1, 2026.
Read through reviews of airlines operating flights from Ontario to Madrid, such as American Airlines,Iberia, andBritish Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,766 reviews

Crew

7.9

Boarding

7.5

Food

6.4

Entertainment

6.8

Overall

7.1

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.1
Good
11,766 reviews
American Airlines
7.1
Good
11,766 reviews

Crew

7.9

Boarding

7.5

Food

6.4

Entertainment

6.8

Overall

7.1

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
Iberia
7.0
Good
3,248 reviews
American Airlines
7.1
Good
11,766 reviews

Crew

7.9

Boarding

7.5

Food

6.4

Entertainment

6.8

Overall

7.1

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
British Airways
6.7
Okay
8,087 reviews
American Airlines
7.1
Good
11,766 reviews

Crew

7.9

Boarding

7.5

Food

6.4

Entertainment

6.8

Overall

7.1

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

Find useful and relevant information for your journey from Ontario to Madrid. 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 Ontario to Madrid?

    There are many flights that can get you from Ontario to Madrid in 15h 15m. Fly via KLM, United Airlines, or Air France to get the fastest option. Ontario and Madrid are separated by a distance of 5790 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Ontario to Madrid round-trip?

    Our cheapest airline available from Ontario to Madrid is American Airlines. Our recent data shows that you can find tickets from as low as $439 on this airline. Additional options worth looking into are Iberia and British Airways, starting at $497 and $504 round-trip. American Airlines is priced at 44% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Ontario to Madrid (average of $516). Flying from Ontario to Madrid in June is currently the most expensive (average of $1,889). 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

Traveling to a place near Madrid?

Book flights to Madrid if you plan to visit one of these locations
Getafe

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Top 3 airlines flying from Ontario to Madrid

Discover the top 3 airlines that operate flights from Ontario to Madrid. 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 July 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$439Average$755FlexibilityNo cancel feeOn-time71%
IberiaCheapest$497Average$638FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$504Average$762FlexibilityNo cancel feeOn-time70%

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