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Ontario

$654+ Cheap flights from Madrid, Spain (MAD) to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — ONT
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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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 May 1, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$654
(Iberia)

Popular in

July

Cheapest in

February

Average price

$720
Provider with most accurate pricing for Madrid Barajas-Ontario flight deals.
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Provider most trusted by Cheapflights users for Madrid Barajas-Ontario flights.
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From Madrid Barajas to Ontario
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Highest demand for flights based on searches. 17% potential increase in price ($170 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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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 May 1, 2025.

This Iberia deal was found by Cheapflights users on 5/1. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/184:00 pmMAD - ONT
1 stop16h 43mIberia
Thu 7/312:39 pmONT - MAD
1 stop14h 41mIberia
Deal found 5/1$654
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/181:00 pmMAD - ONT
1 stop16h 00mAmerican Airlines
Sat 10/253:00 pmONT - MAD
1 stop14h 20mAmerican Airlines
Deal found 4/30$673
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Thu 5/1512:45 pmMAD - ONT
2 stops17h 08mUnited Airlines
Mon 5/265:10 amONT - MAD
2 stops16h 30mUnited Airlines
Deal found 4/30$764
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/156:00 amMAD - ONT
2 stops19h 17mDelta
Mon 5/196:00 amONT - MAD
2 stops25h 45mDelta
Deal found 4/30$767
This Air Canada deal was found by Cheapflights users on 4/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/912:45 pmMAD - ONT
2 stops16h 48mMultiple Airlines
Sun 9/216:04 amONT - MAD
2 stops17h 16mMultiple Airlines
Deal found 4/30$804
This British Airways deal was found by Cheapflights users on 4/30. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/284:00 pmMAD - ONT
1 stop16h 43mBritish Airways
Wed 6/410:51 amONT - MAD
1 stop13h 14mBritish Airways
Deal found 4/30$883
This Air Canada deal was found by Cheapflights users on 4/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1312:45 pmMAD - ONT
2 stops17h 19mAir Canada
Mon 7/75:05 amONT - MAD
2 stops16h 35mAir Canada
Deal found 4/30$918
This KLM deal was found by Cheapflights users on 4/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1610:05 amMAD - ONT
1 stop18h 24mKLM
Sun 8/317:00 amONT - MAD
1 stop17h 35mKLM
Deal found 4/30$1,071
This Priceline deal was found by Cheapflights users on 4/29. 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.
Mon 5/191:30 amMAD - ONT
2 stops29h 25mAvianca
Tue 5/2711:25 pmONT - MAD
2 stops23h 15mAvianca
Deal found 4/29$1,323

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 May 1, 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

Sun 5/18

4:00 pm-11:43 pm

1 stop16h 43m

Ontario

Thu 7/31

2:39 pm-2:20 pm

1 stop14h 41m

$654

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Sat 10/18

1:00 pm-8:00 pm

1 stop16h 00m

Ontario

Sat 10/25

3:00 pm-2:20 pm

1 stop14h 20m

$673

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Thu 5/15

12:45 pm-8:53 pm

2 stops17h 08m

Ontario

Sun 5/25

6:32 pm-6:40 am

2 stops27h 08m

$764

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Thu 5/15

6:00 am-4:17 pm

2 stops19h 17m

Ontario

Mon 5/19

6:00 am-4:45 pm

2 stops25h 45m

$767

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Tue 9/9

12:45 pm-8:33 pm

2 stops16h 48m

Ontario

Sun 9/21

6:04 am-8:20 am

2 stops17h 16m

$804

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Wed 5/28

4:00 pm-11:43 pm

1 stop16h 43m

Ontario

Wed 6/4

10:51 am-9:05 am

1 stop13h 14m

$883

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Fri 6/13

12:45 pm-9:04 pm

2 stops17h 19m

Ontario

Mon 7/7

5:05 am-6:40 am

2 stops16h 35m

$918

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Sat 8/16

10:05 am-7:29 pm

1 stop18h 24m

Ontario

Sun 8/31

7:00 am-9:35 am

1 stop17h 35m

$1,071

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Mon 5/19

1:30 am-9:55 pm

2 stops29h 25m

Ontario

Tue 5/27

11:25 pm-7:40 am

2 stops23h 15m

$1,323

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Wed 5/14

1:30 am-9:55 pm

2 stops29h 25m

$737

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 18 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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 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 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, August is the cheapest month in which you can book a flight from Madrid to Ontario (average of $246). Flying from Madrid to Ontario in March is currently the most expensive (average of $328). 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated May 1, 2025.
Get a feel of what it's like to fly with Delta, KLM and United Airlines from Madrid to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Canada
7.0
Good
9,252 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    Our cheapest airline available from Madrid to Ontario is Iberia. Our recent data shows that you can find tickets from as low as $654 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $673 and $764 round-trip.

  • What are the cheapest airlines to fly from Madrid to Ontario one-way?

    For one-way options, check prices for Avianca. According to our data, you can fly for as low as $737. Users have also found prices from $772 and $815 on KLM and British Airways, respectively.

  • 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, August is the cheapest month in which you can book a flight from Madrid to Ontario (average of $246). Flying from Madrid to Ontario in March is currently the most expensive (average of $328). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Madrid to Ontario

Discover the top airline that operate flights from Madrid to Ontario. 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 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$508Average$914FlexibilityNo cancel feeOn-time77%

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