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Ontario

$453+ 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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — ONT
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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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 October 28, 2025.

This United Airlines deal was found by Cheapflights users on 10/28. 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.
Thu 11/136:00 amMAD - ONT
2 stops23h 44mUnited Airlines
Mon 11/175:05 amONT - MAD
2 stops19h 10mUnited Airlines
Deal found 10/28$473
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Thu 11/276:00 amMAD - ONT
2 stops39h 37mUnited Airlines
Sun 11/309:35 pmONT - MAD
2 stops33h 15mUnited Airlines
Deal found 10/28$480
This British Airways deal was found by Cheapflights users on 10/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1312:40 pmMAD - ONT
1 stop20h 17mBritish Airways
Mon 12/16:10 amONT - MAD
1 stop18h 15mBritish Airways
Deal found 10/28$484
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Mon 11/2411:05 amMAD - ONT
2 stops20h 26mUnited Airlines
Mon 12/15:05 amONT - MAD
2 stops19h 10mUnited Airlines
Deal found 10/27$486
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Wed 11/511:05 amMAD - ONT
2 stops20h 46mUnited Airlines
Thu 11/277:00 amONT - MAD
2 stops16h 05mUnited Airlines
Deal found 10/28$487
This Finnair deal was found by Cheapflights users on 10/28. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1112:40 pmMAD - ONT
1 stop18h 49mMultiple Airlines
Tue 11/187:00 amONT - MAD
1 stop17h 25mMultiple Airlines
Deal found 10/28$492
This British Airways deal was found by Cheapflights users on 10/26. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/61:00 pmMAD - ONT
1 stop17h 11mBritish Airways
Sat 11/1510:47 amONT - MAD
1 stop13h 38mBritish Airways
Deal found 10/26$501
This British Airways deal was found by Cheapflights users on 10/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/131:00 pmMAD - ONT
1 stop17h 11mBritish Airways
Sat 11/296:10 amONT - MAD
1 stop18h 15mBritish Airways
Deal found 10/28$502
This Finnair deal was found by Cheapflights users on 10/27. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1411:00 amMAD - ONT
2 stops20h 29mMultiple Airlines
Fri 11/286:10 amONT - MAD
2 stops17h 40mMultiple Airlines
Deal found 10/27$519

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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$473
(United Airlines)

One-way from

$453
(Trip.com)

Popular in

July

Cheapest in

February

Average price

$659
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. 16% potential increase in price ($152 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 28, 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

Thu 3/12

6:00 am-8:45 pm

2 stops22h 45m

Ontario

Mon 3/16

5:40 am-7:00 am

2 stops17h 20m

$471

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Wed 2/18

5:55 am-8:50 pm

2 stops23h 55m

Ontario

Wed 2/25

6:00 am-9:15 am

2 stops18h 15m

$471

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Mon 1/19

1:45 pm-10:53 pm

2 stops18h 08m

Ontario

Sun 2/1

5:05 am-9:15 am

2 stops19h 10m

$471

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Mon 2/2

1:45 pm-10:53 pm

2 stops18h 08m

Ontario

Mon 2/16

5:00 am-8:00 am

2 stops18h 00m

$473

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Thu 1/22

6:00 am-8:58 pm

2 stops23h 58m

Ontario

Mon 2/2

6:00 am-8:00 am

2 stops17h 00m

$473

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Thu 12/4

6:00 am-8:42 pm

2 stops23h 42m

Ontario

Mon 12/8

6:00 am-9:15 am

2 stops18h 15m

$473

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Thu 11/13

6:00 am-8:44 pm

2 stops23h 44m

Ontario

Mon 11/17

5:05 am-9:15 am

2 stops19h 10m

$473

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Thu 12/4

6:00 am-8:42 pm

2 stops23h 42m

Ontario

Wed 12/10

5:05 am-9:15 am

2 stops19h 10m

$473

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Mon 2/2

1:45 pm-10:53 pm

2 stops18h 08m

Ontario

Sun 2/15

5:00 am-9:15 am

2 stops19h 15m

$473

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Fri 2/20

6:00 am-10:57 pm

2 stops25h 57m

Ontario

Tue 2/24

6:00 am-9:15 am

2 stops18h 15m

$473

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 23 results
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Compare providers for flights from Madrid to Ontario

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 Madrid to Ontario in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 Madrid-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Madrid-Ontario flight deals on Cheapflights vs. eDreams >95% 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 eDreams the most. eDreams 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, September is the cheapest month in which you can book a flight from Madrid to Ontario (average of $454). Flying from Madrid to Ontario in July is currently the most expensive (average of $665). 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 22h 45m. 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, September is the cheapest month in which you can book a flight from Madrid to Ontario (average of $454). Flying from Madrid to Ontario in July is currently the most expensive (average of $665). 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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