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$342+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MAD
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Madrid Barajas are usually found in February or January, booked 15 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap 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 2, 2025.

Round-trip from

$402
(KLM)

One-way from

$342
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$991
From Ontario to Madrid Barajas
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One-way flight from Ontario to Madrid Barajas
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Highest demand for flights based on searches. 24% potential increase in price ($276 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($41 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 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 2, 2025.

This KLM deal was found by Cheapflights users on 7/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/177:05 amONT - MAD
1 stop17h 30mKLM
Fri 9/510:05 amMAD - ONT
1 stop18h 06mKLM
Deal found 7/1$402
This Delta deal was found by Cheapflights users on 7/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/297:00 amONT - MAD
2 stops16h 00mDelta
Fri 11/2110:00 amMAD - ONT
2 stops21h 41mDelta
Deal found 7/1$407
This Iberia deal was found by Cheapflights users on 7/1. 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.
Wed 10/2910:55 amONT - MAD
1 stop14h 30mIberia
Thu 11/201:00 pmMAD - ONT
1 stop19h 45mIberia
Deal found 7/1$497
This United Airlines deal was found by Cheapflights users on 7/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/125:05 amONT - MAD
2 stops16h 35mUnited Airlines
Tue 10/286:05 amMAD - ONT
2 stops19h 29mUnited Airlines
Deal found 7/1$503
This Travelocity deal was found by Cheapflights users on 7/1. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/242:54 pmONT - MAD
2 stops20h 01mBritish Airways
Wed 10/14:00 pmMAD - ONT
1 stop30h 19mBritish Airways
Deal found 7/1$506

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 2, 2025.
Use the filters below to find and compare flights from Ontario to Madrid that are best for you.

Fly from

Ontario

Fly to

Madrid

Route

Depart

Return

Price

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 8/17

7:05 am-9:35 am

1 stop17h 30m

Madrid Barajas

Fri 9/5

10:05 am-7:11 pm

1 stop18h 06m

$402

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 10/29

7:00 am-7:00 am

2 stops16h 00m

Madrid Barajas

Fri 11/21

10:00 am-10:41 pm

2 stops21h 41m

$407

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 10/29

10:55 am-9:25 am

1 stop14h 30m

Madrid Barajas

Thu 11/20

1:00 pm-11:45 pm

1 stop19h 45m

$497

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 10/12

5:05 am-6:40 am

2 stops16h 35m

Madrid Barajas

Tue 10/28

6:05 am-5:34 pm

2 stops19h 29m

$503

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 9/24

2:54 pm-7:55 pm

2 stops20h 01m

Madrid Barajas

Wed 10/1

4:00 pm-1:19 pm

1 stop30h 19m

$506

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Fri 9/12

11:14 am-10:15 am

3 stops38h 01m

$342

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 7/30

6:00 am-9:00 am

2 stops18h 00m

$408

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 8/17

5:05 am-8:20 am

2 stops18h 15m

$415

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 7/30

7:05 am-9:35 am

1 stop17h 30m

$420

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sat 8/9

11:59 pm-9:05 am

1 stop24h 06m

$432

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 13 results
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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

How far ahead should I book a flight from Ontario to Madrid?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Madrid. Price data was last updated on June 27, 2025.

To ensure you get the cheapest price possible for a flight from Ontario to Madrid, you should look to book at least 15 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Ontario to Madrid?

Currently, November is the cheapest month in which you can book a flight from Ontario to Madrid (average of $543). Flying from Ontario to Madrid in June is currently the most expensive (average of $1,054). 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.

What is the cheapest time of day to fly from ONT to MAD?

Find hourly flight availability from Ontario to Madrid. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 2, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 14% on flights from Ontario to Madrid by exploring options for tickets in the afternoon.

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 July 2, 2025.
Read through reviews of airlines operating flights from Ontario to Madrid, such as Delta, KLM, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,983 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,366 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.1
Good
9,669 reviews
Delta
8.0
Very good
7,983 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

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

    Our cheapest airline available from Ontario to Madrid is KLM. Our recent data shows that you can find tickets from as low as $402 on this airline. Additional options worth looking into are Delta and Iberia, starting at $407 and $497 round-trip. KLM is priced at 52% lower than the current average price of a flight leaving 3 months from now.

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

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $408. Users have also found prices from $415 and $420 on Air Canada and KLM, respectively.

  • 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, November is the cheapest month in which you can book a flight from Ontario to Madrid (average of $543). Flying from Ontario to Madrid in June is currently the most expensive (average of $1,054). 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 Ontario?

Book flights to Ontario if you plan to visit one of these locations
Segovia
Fuenlabrada

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Top 5 airlines flying from Ontario to Madrid

Discover the top 5 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 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$489Average$877FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$492Average$590FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$504Average$816FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$560Average$812FlexibilityNo cancel feeOn-time70%
DeltaCheapest$661Average$873FlexibilityNo cancel feeOn-timeN/A

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