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$344+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MAD
Jun 18 — Jun 251
Thu 6/18
Thu 6/25
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 May 19, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 5/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:25 am
ONT
-
MAD
1 stop13h 40m
British Airways
Tue 10/2012:20 pm
MAD
-
ONT
1 stop15h 37m
British Airways
Deal found 5/16$751
This British Airways deal was found by Cheapflights users on 5/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/51:31 pm
ONT
-
MAD
2 stops17h 19m
British Airways
Wed 10/2112:40 pm
MAD
-
ONT
1 stop16h 24m
British Airways
Deal found 5/17$761
This British Airways deal was found by Cheapflights users on 5/18. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:25 am
ONT
-
MAD
1 stop13h 40m
British Airways
Wed 10/2812:55 am
MAD
-
ONT
1 stop16h 34m
British Airways
Deal found 5/18$764
This Delta deal was found by Cheapflights users on 5/18. 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 11/167:00 am
ONT
-
MAD
1 stop17h 55m
Delta
Fri 11/276:00 am
MAD
-
ONT
2 stops19h 12m
Delta
Deal found 5/18$766
This Finnair deal was found by Cheapflights users on 5/19. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:10 am
ONT
-
MAD
1 stop15h 00m
Multiple Airlines
Fri 11/612:00 pm
MAD
-
ONT
2 stops20h 57m
Multiple Airlines
Deal found 5/19$768
This Delta deal was found by Cheapflights users on 5/19. 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 11/29:55 am
ONT
-
MAD
2 stops22h 45m
Delta
Fri 11/66:00 am
MAD
-
ONT
2 stops19h 12m
Delta
Deal found 5/19$769
This Delta deal was found by Cheapflights users on 5/17. 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 11/145:05 pm
ONT
-
MAD
2 stops29h 55m
Delta
Thu 11/2610:55 am
MAD
-
ONT
2 stops38h 17m
Delta
Deal found 5/17$770
This Delta deal was found by Cheapflights users on 5/18. 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 12/275:05 pm
ONT
-
MAD
2 stops37h 15m
Delta
Tue 1/1212:55 pm
MAD
-
ONT
1 stop18h 19m
Delta
Deal found 5/18$774
This United Airlines deal was found by Cheapflights users on 5/17. 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 10/56:05 am
ONT
-
MAD
2 stops17h 00m
United Airlines
Wed 10/211:30 pm
MAD
-
ONT
2 stops41h 56m
United Airlines
Deal found 5/17$775
This United Airlines deal was found by Cheapflights users on 5/19. 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 11/245:00 am
ONT
-
MAD
2 stops18h 00m
United Airlines
Tue 12/81:45 pm
MAD
-
ONT
2 stops18h 21m
United Airlines
Deal found 5/19$789
This United Airlines deal was found by Cheapflights users on 5/17. 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 11/115:00 am
ONT
-
MAD
2 stops19h 15m
United Airlines
Thu 11/2611:15 am
MAD
-
ONT
2 stops18h 05m
United Airlines
Deal found 5/17$790

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 May 19, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$751
(Cheapflightsfares)

One-way from

$344
(Cheapflightsfares)

Popular in

June

Cheapest in

October

Average price

$787
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. 30% potential increase in price ($325 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($67 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 19, 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

Sun 10/18

12:00 pm-12:15 pm

1 stop15h 15m

Madrid Barajas

Fri 10/23

9:50 am-6:18 pm

1 stop17h 28m

$764

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 9/20

6:00 am-2:25 pm

1 stop23h 25m

Madrid Barajas

Sat 9/26

3:55 pm-11:06 pm

1 stop16h 11m

$814

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sat 10/24

12:00 pm-10:55 am

1 stop13h 55m

Madrid Barajas

Fri 10/30

11:55 am-10:14 pm

1 stop18h 19m

$814

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sat 10/17

12:00 pm-12:15 pm

1 stop15h 15m

Madrid Barajas

Fri 10/23

9:50 am-6:18 pm

1 stop17h 28m

$814

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sat 9/19

5:00 am-9:50 am

3 stops19h 50m

Madrid Barajas

Sat 9/26

11:15 am-10:59 pm

2 stops20h 44m

$899

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 8/11

7:06 am-8:20 am

2 stops16h 14m

Madrid Barajas

Wed 9/2

11:45 am-10:58 pm

2 stops20h 13m

$910

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 8/11

5:00 am-6:50 am

3 stops40h 50m

Madrid Barajas

Wed 9/2

5:55 am-7:57 pm

2 stops23h 02m

$932

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 11/4

7:00 am-7:45 am

2 stops15h 45m

Madrid Barajas

Wed 12/2

11:15 am-9:21 pm

2 stops19h 06m

$932

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Mon 9/28

10:25 am-9:05 am

1 stop13h 40m

Madrid Barajas

Sat 10/10

12:40 pm-8:04 pm

1 stop16h 24m

$1,048
Quickest round-trip

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Fri 8/28

10:29 am-9:05 am

1 stop13h 36m

Madrid Barajas

Thu 9/10

1:00 pm-7:55 pm

1 stop15h 55m

$1,157

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/15

Showing 1-10 of 22 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 May.
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

*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, October is the cheapest month in which you can book a flight from Ontario to Madrid (average of $497). Flying from Ontario to Madrid in June is currently the most expensive (average of $1,476). 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 Ontario to Madrid?

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 May 19, 2026.
Read through reviews of airlines operating flights from Ontario to Madrid, such as Iberia and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Iberia
7.0
Good
3,220 reviews

Entertainment

6.6

Food

6.4

Boarding

7.2

Crew

7.7

Comfort

6.7

Overall

7.0

Reviews

1 / 20
2.0
Mediocre

Stiphan,Nov 2025

SVQ - MAD

Ground staff in Seville are incompetent. I fly over 300K KM per year and understand rules. Had to waste time to try to get baggage checked through for entire reservation but ground crew insisted I had to claim in Madrid. Once in Madrid, Ground staff said that it should have been checked through and did recheck the baggage. Wasted time and energy. Not level of service expected when flying business class with family and 10 suitcases. And one suitcase got lost.
Iberia
7.0
Good
3,220 reviews
Iberia
7.0
Good
3,220 reviews

Entertainment

6.6

Food

6.4

Boarding

7.2

Crew

7.7

Comfort

6.7

Overall

7.0

Reviews

1 / 20
2.0
Mediocre

Stiphan,Nov 2025

SVQ - MAD

Ground staff in Seville are incompetent. I fly over 300K KM per year and understand rules. Had to waste time to try to get baggage checked through for entire reservation but ground crew insisted I had to claim in Madrid. Once in Madrid, Ground staff said that it should have been checked through and did recheck the baggage. Wasted time and energy. Not level of service expected when flying business class with family and 10 suitcases. And one suitcase got lost.
British Airways
6.7
Okay
7,989 reviews
Iberia
7.0
Good
3,220 reviews

Entertainment

6.6

Food

6.4

Boarding

7.2

Crew

7.7

Comfort

6.7

Overall

7.0

Reviews

1 / 20
2.0
Mediocre

Stiphan,Nov 2025

SVQ - MAD

Ground staff in Seville are incompetent. I fly over 300K KM per year and understand rules. Had to waste time to try to get baggage checked through for entire reservation but ground crew insisted I had to claim in Madrid. Once in Madrid, Ground staff said that it should have been checked through and did recheck the baggage. Wasted time and energy. Not level of service expected when flying business class with family and 10 suitcases. And one suitcase got lost.

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 13h 40m. Fly via KLM, United Airlines, or British Airways 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 Iberia. Our recent data shows that you can find tickets from as low as $497 on this airline. An additional option worth looking into is British Airways, starting at $504. Iberia is priced at 34% 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, October is the cheapest month in which you can book a flight from Ontario to Madrid (average of $497). Flying from Ontario to Madrid in June is currently the most expensive (average of $1,476). 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 2 airlines flying from Ontario to Madrid

Discover the top 2 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 May 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$497Average$654FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$504Average$916FlexibilityNo cancel feeOn-time70%

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