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Ontario

$589+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — ONT
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 July 29, 2025.

Round-trip from

$626
(British Airways)

One-way from

$589
(Kiwi.com)

Popular in

July

Cheapest in

May

Average price

$1,228
From Madrid Barajas to Ontario
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One-way flight from Madrid Barajas to Ontario
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Highest demand for flights based on searches. 13% potential increase in price ($128 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 29, 2025.

This British Airways deal was found by Cheapflights users on 7/29. 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 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
Mon 11/1710:47 amONT - MAD
2 stops17h 48mBritish Airways
Deal found 7/29$626
This Iberia deal was found by Cheapflights users on 7/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:55 amMAD - ONT
1 stop18h 02mIberia
Tue 11/186:10 amONT - MAD
1 stop15h 05mIberia
Deal found 7/29$667
This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/412:40 pmMAD - ONT
1 stop15h 14mAmerican Airlines
Wed 10/110:54 amONT - MAD
1 stop13h 11mAmerican Airlines
Deal found 7/28$737
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Sat 12/278:25 amMAD - ONT
2 stops22h 27mUnited Airlines
Fri 1/166:02 amONT - MAD
2 stops18h 13mUnited Airlines
Deal found 7/27$771
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:00 amMAD - ONT
2 stops18h 57mDelta
Thu 9/186:00 amONT - MAD
2 stops20h 20mDelta
Deal found 7/28$788
This Air Canada deal was found by Cheapflights users on 7/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1212:45 pmMAD - ONT
3 stops32h 47mMultiple Airlines
Fri 9/196:38 pmONT - MAD
2 stops27h 02mMultiple Airlines
Deal found 7/29$798
This Air Canada deal was found by Cheapflights users on 7/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/712:45 pmMAD - ONT
2 stops19h 07mAir Canada
Mon 1/125:40 amONT - MAD
2 stops17h 20mAir Canada
Deal found 7/29$800

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 July 29, 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 11/6

1:00 pm-9:11 pm

1 stop17h 11m

Ontario

Mon 11/17

10:47 am-1:35 pm

2 stops17h 48m

$626

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Mon 11/10

12:55 am-9:57 am

1 stop18h 02m

Ontario

Tue 11/18

6:10 am-6:15 am

1 stop15h 05m

$667

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Thu 9/4

12:40 pm-6:54 pm

1 stop15h 14m

Ontario

Wed 10/1

10:54 am-9:05 am

1 stop13h 11m

$737

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Fri 1/23

6:05 am-8:17 pm

2 stops23h 12m

Ontario

Fri 1/30

6:02 am-9:15 am

2 stops18h 13m

$759

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Thu 9/11

6:00 am-3:57 pm

2 stops18h 57m

Ontario

Thu 9/18

6:00 am-11:20 am

2 stops20h 20m

$788

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Fri 9/12

12:45 pm-12:32 pm

3 stops32h 47m

Ontario

Fri 9/19

6:38 pm-6:40 am

2 stops27h 02m

$798

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Tue 10/7

12:45 pm-10:52 pm

2 stops19h 07m

Ontario

Mon 1/12

5:40 am-8:00 am

2 stops17h 20m

$800

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Mon 8/18

10:35 pm-4:18 pm

3 stops50h 43m

$589

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Wed 9/10

1:30 am-9:55 pm

2 stops29h 25m

$755

MadridOntario

MAD - ONT

MADONT

Madrid Barajas

Thu 1/8

11:00 am-9:14 pm

1 stop19h 14m

$760

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 13 results
1
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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.

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 July 29, 2025.
Read reviews from past customers who have flown Delta, KLM, and United Airlines from Madrid to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,977 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

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
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

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
1,383 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

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
8,899 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

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
7,977 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

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
7.1
Good
9,822 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

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 British Airways. Our recent data shows that you can find tickets from as low as $626 on this airline. Additional options worth looking into are Iberia and American Airlines, starting at $667 and $737 round-trip. British Airways is currently priced 27% below the average price you’ll pay for this route.

  • 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 $755. Users have also found prices from $760 and $769 on KLM and Iberia, 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.

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