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$337+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MAD
Aug 10 — Aug 171
Mon 8/10
Mon 8/17
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 11, 2026.

This United Airlines deal was found by Cheapflights users on 7/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:00 am
ONT
-
MAD
2 stops19h 00m
United Airlines
Wed 10/1412:45 pm
MAD
-
ONT
2 stops43h 14m
United Airlines
Deal found 7/9$735
This United Airlines deal was found by Cheapflights users on 7/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:00 am
ONT
-
MAD
2 stops16h 05m
United Airlines
Fri 10/91:30 pm
MAD
-
ONT
2 stops42h 19m
United Airlines
Deal found 7/9$739
This United Airlines deal was found by Cheapflights users on 7/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:00 am
ONT
-
MAD
2 stops16h 50m
United Airlines
Fri 10/2312:45 pm
MAD
-
ONT
3 stops41h 13m
United Airlines
Deal found 7/9$746
This United Airlines deal was found by Cheapflights users on 7/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/191:56 pm
ONT
-
MAD
2 stops34h 04m
United Airlines
Fri 10/91:30 pm
MAD
-
ONT
2 stops42h 19m
United Airlines
Deal found 7/9$752
This United Airlines deal was found by Cheapflights users on 7/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:00 am
ONT
-
MAD
2 stops16h 05m
United Airlines
Wed 10/711:15 am
MAD
-
ONT
2 stops20h 34m
United Airlines
Deal found 7/9$755
This oojo deal was found by Cheapflights users on 7/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/311:59 pm
ONT
-
MAD
1 stop22h 46m
British Airways
Tue 11/1711:05 am
MAD
-
ONT
1 stop20h 18m
British Airways
Deal found 7/10$760
This British Airways deal was found by Cheapflights users on 7/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:25 am
ONT
-
MAD
1 stop13h 40m
British Airways
Tue 10/612:40 pm
MAD
-
ONT
1 stop16h 14m
British Airways
Deal found 7/9$763
This lastminute.com deal was found by Cheapflights users on 7/8. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:00 am
ONT
-
MAD
2 stops19h 15m
Iberia
Fri 10/233:55 pm
MAD
-
ONT
1 stop16h 57m
Iberia
Deal found 7/8$764
This Priceline deal was found by Cheapflights users on 7/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3012:37 pm
ONT
-
MAD
1 stop16h 48m
Iberia
Wed 10/147:30 am
MAD
-
ONT
2 stops22h 41m
Iberia
Deal found 7/9$767
This Delta deal was found by Cheapflights users on 7/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1912:17 pm
ONT
-
MAD
2 stops33h 03m
Delta
Fri 10/99:50 am
MAD
-
ONT
1 stop17h 23m
Delta
Deal found 7/9$768
This Delta deal was found by Cheapflights users on 7/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2510:00 pm
ONT
-
MAD
2 stops50h 55m
Delta
Tue 10/62:35 pm
MAD
-
ONT
2 stops29h 33m
Delta
Deal found 7/9$779
This oojo deal was found by Cheapflights users on 7/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2812:37 pm
ONT
-
MAD
1 stop35h 28m
British Airways
Tue 10/612:40 pm
MAD
-
ONT
1 stop16h 14m
British Airways
Deal found 7/10$783

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 11, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$735
(United Airlines)

One-way from

$337
(oojo)

Popular in

June

Cheapest in

August

Average price

$1,848
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. 43% potential increase in price ($680 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease ($93 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 11, 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

Sat 9/12

12:17 pm-6:20 am

2 stops33h 03m

Madrid Barajas

Mon 9/21

9:50 am-10:26 pm

1 stop21h 36m

$960

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Thu 9/10

12:17 pm-12:15 pm

1 stop14h 58m

Madrid Barajas

Fri 9/25

9:50 am-6:09 pm

1 stop17h 19m

$965

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Thu 8/13

12:00 pm-12:15 pm

1 stop15h 15m

Madrid Barajas

Thu 8/27

9:50 am-6:30 pm

1 stop17h 40m

$1,024

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 9/9

10:25 am-9:05 am

1 stop13h 40m

Madrid Barajas

Wed 9/16

12:40 pm-8:07 pm

1 stop16h 27m

$1,034
Quickest round-trip

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 9/8

10:29 am-9:05 am

1 stop13h 36m

Madrid Barajas

Tue 9/15

12:40 pm-8:07 pm

1 stop16h 27m

$1,064

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Tue 9/1

10:29 am-9:05 am

1 stop13h 36m

Madrid Barajas

Tue 9/15

12:40 pm-8:07 pm

1 stop16h 27m

$1,090

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Fri 9/11

10:25 am-9:05 am

1 stop13h 40m

Madrid Barajas

Mon 9/21

12:40 pm-8:09 pm

1 stop16h 29m

$1,277

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Mon 9/21

10:00 pm-12:15 pm

1 stop29h 15m

Madrid Barajas

Sun 10/4

9:50 am-10:26 pm

1 stop21h 36m

$1,349

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Mon 9/14

9:10 pm-5:35 am

1 stop23h 25m

Madrid Barajas

Sun 9/27

10:25 am-8:13 pm

1 stop18h 48m

$1,375

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 7/15

11:48 am-12:15 pm

1 stop15h 27m

Madrid Barajas

Wed 7/29

9:50 am-6:30 pm

1 stop17h 40m

$1,455

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

Showing 1-10 of 23 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 $490). 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 11, 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
3,251 reviews

Food

6.3

Boarding

7.1

Crew

7.7

Entertainment

6.6

Overall

7.0

Comfort

6.7

Reviews

1 / 20
2.0
Mediocre

T,Jun 2026

JFK - MAD

I wasn’t able to go we tried cancelling through agency 6 weeks ago to a severe illness. I paid for trip insurance through Underpricer. And guess what. I got nothing. What a scam. The person my daughter who was supposed to accompany me on a father daughter trip. 7 weeks later is still unable to travel. She is careless by for her mother who had a stroke and is still in a rehab facility. Underpricer has been absent unable to understand the gravity. I provided medical documents and current status. What a disgusting world we live in. My daughter’s mother may not survive another 2 months. But do you air Underpricer care. No. We didn’t cancel frivolously. We had a real medical catastrophe. I paid extra for exactly this kind of issue and have gotten nothing. I may never use Kayak again. You represent your affiliates. I am truly disheartened. Timothy Carey.
Iberia
7.0
Good
3,251 reviews
Iberia
7.0
Good
3,251 reviews

Food

6.3

Boarding

7.1

Crew

7.7

Entertainment

6.6

Overall

7.0

Comfort

6.7

Reviews

1 / 20
2.0
Mediocre

T,Jun 2026

JFK - MAD

I wasn’t able to go we tried cancelling through agency 6 weeks ago to a severe illness. I paid for trip insurance through Underpricer. And guess what. I got nothing. What a scam. The person my daughter who was supposed to accompany me on a father daughter trip. 7 weeks later is still unable to travel. She is careless by for her mother who had a stroke and is still in a rehab facility. Underpricer has been absent unable to understand the gravity. I provided medical documents and current status. What a disgusting world we live in. My daughter’s mother may not survive another 2 months. But do you air Underpricer care. No. We didn’t cancel frivolously. We had a real medical catastrophe. I paid extra for exactly this kind of issue and have gotten nothing. I may never use Kayak again. You represent your affiliates. I am truly disheartened. Timothy Carey.
British Airways
6.7
Okay
8,107 reviews
Iberia
7.0
Good
3,251 reviews

Food

6.3

Boarding

7.1

Crew

7.7

Entertainment

6.6

Overall

7.0

Comfort

6.7

Reviews

1 / 20
2.0
Mediocre

T,Jun 2026

JFK - MAD

I wasn’t able to go we tried cancelling through agency 6 weeks ago to a severe illness. I paid for trip insurance through Underpricer. And guess what. I got nothing. What a scam. The person my daughter who was supposed to accompany me on a father daughter trip. 7 weeks later is still unable to travel. She is careless by for her mother who had a stroke and is still in a rehab facility. Underpricer has been absent unable to understand the gravity. I provided medical documents and current status. What a disgusting world we live in. My daughter’s mother may not survive another 2 months. But do you air Underpricer care. No. We didn’t cancel frivolously. We had a real medical catastrophe. I paid extra for exactly this kind of issue and have gotten nothing. I may never use Kayak again. You represent your affiliates. I am truly disheartened. Timothy Carey.

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 Delta, KLM, 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 British Airways. Our recent data shows that you can find tickets from as low as $504 on this airline. An additional option worth looking into is Iberia, starting at $511. British Airways is priced at 41% 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 $490). 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 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 July 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$504Average$762FlexibilityNo cancel feeOn-time70%
IberiaCheapest$511Average$638FlexibilityNo cancel feeOn-time77%

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