What is the cheapest airline that flies from Ontario to Madrid Barajas?

United Airlines is the most popular carrier operating from Ontario to Madrid Barajas

Which airport is the most popular layover for flights between Ontario and Madrid?

Dallas (DFW) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to Madrid?

Iberia, TAP AIR PORTUGAL and British Airways are the top three most popular airlines that fly to Madrid from Ontario according to our data. Iberia is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Madrid. Keep in mind that there are 21 different airlines that fly to Madrid on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Ontario to Madrid?

Dallas (DFW) has the shortest average layover time for this route: 2h 28m.

Which layover airport has the shortest travel time from Ontario to Madrid?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 15h 08m.

Which layover airport offers the lowest fares from Ontario to Madrid?

Flights via Dallas (DFW) offer the lowest average round-trip price of $755.

When did momondo last update prices for flights from Ontario Airport to Madrid Barajas Airport?

Prices for flights from Ontario Airport to Madrid Barajas Airport are updated daily.

How many operators does momondo search for flights from Ontario Airport to Madrid Barajas Airport?

As of September 2026, there are 3 operators available to choose from for flights from Ontario Airport to Madrid Barajas Airport.

How old do you have to be to fly from Ontario Airport to Madrid Barajas Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Madrid Barajas Airport.

What documentation or ID do you need to fly to Madrid Barajas Airport?

The travel and health documents required for your trip to Madrid Barajas Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Madrid Barajas Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$328 Cheap Flights from Ontario to Madrid in 2026/27

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Find the cheapest flights from Ontario to Madrid

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One-way

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12:00 pm - 11:45 amONT Ontario-MAD Madrid Barajas

14h 45m1 stop Atlanta Hartsfield-Jackson

12:20 pm - 10:14 pmMAD Madrid Barajas-ONT Ontario

18h 54m1 stop Atlanta Hartsfield-Jackson

$608KLM

Mon, Feb 1 - Fri, Feb 19

7:00 am - 9:45 amONT Ontario-MAD Madrid Barajas

17h 45m1 stop Atlanta Hartsfield-Jackson

12:20 pm - 10:14 pmMAD Madrid Barajas-ONT Ontario

18h 54m1 stop Atlanta Hartsfield-Jackson

$617KLM

Wed, Feb 24 - Wed, Mar 3

7:00 am - 9:45 amONT Ontario-MAD Madrid Barajas

17h 45m1 stop Atlanta Hartsfield-Jackson

12:20 pm - 10:14 pmMAD Madrid Barajas-ONT Ontario

18h 54m1 stop Atlanta Hartsfield-Jackson

$617KLM

Tue, Feb 23 - Wed, Mar 3

10:31 am - 9:25 amONT Ontario-MAD Madrid Barajas

13h 54m1 stop Dallas/Fort Worth

1:00 pm - 8:48 pmMAD Madrid Barajas-ONT Ontario

15h 48m1 stop Chicago O'Hare Intl

$740American Airlines

Tue, Mar 2 - Wed, Mar 17

7:00 am - 12:15 pmONT Ontario-MAD Madrid Barajas

20h 15m2 stops Dallas/Fort Worth London Heathrow

12:55 am - 11:55 amMAD Madrid Barajas-ONT Ontario

20h 00m1 stop Dallas/Fort Worth

$742Iberia

Tue, Nov 17 - Mon, Nov 23

10:25 am - 8:05 amONT Ontario-MAD Madrid Barajas

13h 40m1 stop Dallas/Fort Worth

9:00 pm - 9:32 pmMAD Madrid Barajas-ONT Ontario

33h 32m2 stops London Heathrow Dallas/Fort Worth

$757Iberia

Tue, Oct 27 - Thu, Nov 5

7:00 am - 8:05 amONT Ontario-MAD Madrid Barajas

16h 05m1 stop Dallas/Fort Worth

1:00 pm - 9:32 pmMAD Madrid Barajas-ONT Ontario

17h 32m1 stop Dallas/Fort Worth

$771British Airways

Sun, Nov 29 - Fri, Dec 4

12:42 pm - 6:10 amONT Ontario-MAD Madrid Barajas

32h 28m1 stop Dallas/Fort Worth

1:30 pm - 9:40 amMAD Madrid Barajas-ONT Ontario

29h 10m1 stop Dallas/Fort Worth

$787American Airlines

Wed, Nov 4 - Wed, Nov 11

10:38 am - 9:20 amONT Ontario-MAD Madrid Barajas

13h 42m1 stop Dallas/Fort Worth

1:00 pm - 11:08 pmMAD Madrid Barajas-ONT Ontario

19h 08m1 stop Dallas/Fort Worth

$797British Airways

Wed, Jan 13 - Wed, Jan 27

11:59 pm - 9:05 amONT Ontario-MAD Madrid Barajas

24h 06m1 stop Dallas/Fort Worth

10:00 am - 6:42 pmMAD Madrid Barajas-ONT Ontario

17h 42m1 stop Dallas/Fort Worth

$1,006American Airlines

Fri, Oct 16 - Sun, Nov 1

Cheap last minute flights

Enter your travel dates to find the best prices.

3:14 pm - 8:35 pmONT Ontario-MAD Madrid Barajas

20h 21m2 stops Seattle/Tacoma Intl London Heathrow

9:10 am - 11:42 pmMAD Madrid Barajas-ONT Ontario

23h 32m2 stops London Heathrow Seattle/Tacoma Intl

$990Alaska Airlines

Mon, Sep 28 - Thu, Oct 8

3:14 pm - 8:35 pmONT Ontario-MAD Madrid Barajas

20h 21m2 stops Seattle/Tacoma Intl London Heathrow

1:25 pm - 10:17 amMAD Madrid Barajas-ONT Ontario

29h 52m2 stops London Heathrow Seattle/Tacoma Intl

$996Alaska Airlines

Mon, Sep 28 - Wed, Oct 14

3:14 pm - 8:35 pmONT Ontario-MAD Madrid Barajas

20h 21m2 stops Seattle/Tacoma Intl London Heathrow

1:25 pm - 10:17 amMAD Madrid Barajas-ONT Ontario

29h 52m2 stops London Heathrow Seattle/Tacoma Intl

$996Alaska Airlines

Mon, Sep 28 - Tue, Oct 13

10:25 am - 9:05 amONT Ontario-MAD Madrid Barajas

13h 40m1 stop Dallas/Fort Worth

10:00 am - 6:44 pmMAD Madrid Barajas-ONT Ontario

16h 44m1 stop Dallas/Fort Worth

$1,086Iberia

Mon, Sep 28 - Thu, Oct 29

12:19 pm - 12:15 pmONT Ontario-MAD Madrid Barajas

14h 56m1 stop Atlanta Hartsfield-Jackson

9:50 am - 6:07 pmMAD Madrid Barajas-ONT Ontario

17h 17m1 stop Atlanta Hartsfield-Jackson

$1,131KLM

Wed, Sep 23 - Mon, Sep 28

10:25 am - 9:05 amONT Ontario-MAD Madrid Barajas

13h 40m1 stop Dallas/Fort Worth

12:40 pm - 7:54 pmMAD Madrid Barajas-ONT Ontario

16h 14m1 stop Charlotte Douglas

$1,147British Airways

Mon, Sep 28 - Tue, Oct 13

2:22 pm - 9:05 amONT Ontario-MAD Madrid Barajas

33h 43m1 stop Dallas/Fort Worth

12:40 pm - 10:59 pmMAD Madrid Barajas-ONT Ontario

19h 19m1 stop Charlotte Douglas

$1,242British Airways

Sat, Sep 26 - Mon, Oct 12

10:25 am - 9:05 amONT Ontario-MAD Madrid Barajas

13h 40m1 stop Dallas/Fort Worth

10:25 am - 6:44 pmMAD Madrid Barajas-ONT Ontario

17h 19m1 stop Dallas/Fort Worth

$1,276Iberia

Sun, Sep 27 - Thu, Oct 8

10:25 am - 9:05 amONT Ontario-MAD Madrid Barajas

13h 40m1 stop Dallas/Fort Worth

10:25 am - 6:44 pmMAD Madrid Barajas-ONT Ontario

17h 19m1 stop Dallas/Fort Worth

$1,276Iberia

Mon, Sep 28 - Thu, Oct 8

10:25 am - 9:05 amONT Ontario-MAD Madrid Barajas

13h 40m1 stop Dallas/Fort Worth

12:40 pm - 8:09 pmMAD Madrid Barajas-ONT Ontario

16h 29m1 stop Dallas/Fort Worth

$1,989British Airways

Thu, Sep 24 - Sat, Sep 26

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KLM flights from Ontario to Madrid

Our best KLM deals on Ontario to Madrid flight tickets

KLM

Feb 1

ONT12:00 pmOntario

14h 45m

1 stop

MAD11:45 amMadrid Barajas

Feb 19

MAD12:20 pmMadrid Barajas

18h 54m

1 stop

ONT10:14 pmOntario

$608

KLM

Feb 23

ONT7:00 amOntario

17h 45m

1 stop

MAD9:45 amMadrid Barajas

Mar 3

MAD12:20 pmMadrid Barajas

18h 54m

1 stop

ONT10:14 pmOntario

$617

KLM

Feb 10

ONT12:00 pmOntario

14h 45m

1 stop

MAD11:45 amMadrid Barajas

Feb 28

MAD12:20 pmMadrid Barajas

18h 54m

1 stop

ONT10:14 pmOntario

$659

Iberia flights from Ontario to Madrid

Our best Iberia deals on Ontario to Madrid flight tickets

Iberia

Nov 17

ONT7:00 amOntario

20h 15m

2 stops

MAD12:15 pmMadrid Barajas

Nov 23

MAD12:55 amMadrid Barajas

20h 00m

1 stop

ONT11:55 amOntario

$742

Iberia

Nov 4

ONT7:00 amOntario

20h 15m

2 stops

MAD12:15 pmMadrid Barajas

Nov 11

MAD1:30 pmMadrid Barajas

29h 10m

1 stop

ONT9:40 amOntario

$787

Iberia

Sep 28

ONT10:25 amOntario

13h 40m

1 stop

MAD9:05 amMadrid Barajas

Oct 29

MAD10:00 amMadrid Barajas

16h 44m

1 stop

ONT6:44 pmOntario

$1,086

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Mon 2/1

12:00 pm-11:45 am

1 stop14h 45m

Madrid Barajas

Fri 2/19

12:20 pm-10:14 pm

1 stop18h 54m

$608

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Wed 2/24

7:00 am-9:45 am

1 stop17h 45m

Madrid Barajas

Wed 3/3

12:20 pm-10:14 pm

1 stop18h 54m

$617

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Tue 2/23

7:00 am-9:45 am

1 stop17h 45m

Madrid Barajas

Wed 3/3

12:20 pm-10:14 pm

1 stop18h 54m

$617

Quickest round-trip

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Tue 3/2

10:31 am-9:25 am

1 stop13h 54m

Madrid Barajas

Wed 3/17

1:00 pm-8:48 pm

1 stop15h 48m

$740

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Tue 11/17

7:00 am-12:15 pm

2 stops20h 15m

Madrid Barajas

Mon 11/23

12:55 am-11:55 am

1 stop20h 00m

$742

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Tue 10/27

10:25 am-8:05 am

1 stop13h 40m

Madrid Barajas

Thu 11/5

9:00 pm-9:32 pm

2 stops33h 32m

$757

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Sun 11/29

7:00 am-8:05 am

1 stop16h 05m

Madrid Barajas

Fri 12/4

1:00 pm-9:32 pm

1 stop17h 32m

$771

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Wed 11/4

12:42 pm-6:10 am

1 stop32h 28m

Madrid Barajas

Wed 11/11

1:30 pm-9:40 am

1 stop29h 10m

$787

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Wed 1/13

10:38 am-9:20 am

1 stop13h 42m

Madrid Barajas

Wed 1/27

1:00 pm-11:08 pm

1 stop19h 08m

$797

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Fri 10/16

11:59 pm-9:05 am

1 stop24h 06m

Madrid Barajas

Sun 11/1

10:00 am-6:42 pm

1 stop17h 42m

$1,006

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Madrid

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Ontario and Madrid?

Prices are currently low for flights on this route.

Typical prices usually range from $862 to $1,085.
The lowest price recently found on this route was $617.

What is the cheapest month to fly to Madrid?

The month of August is, on average, the cheapest month to fly to Madrid from Ontario, with most prices found around $490. If you don’t want to visit Madrid in August, then you should wait until March to fly from Ontario, when ticket prices are also cheap, with an average price of $522.

What is the cheapest day to depart on your flight to Madrid?

The cheapest day to depart on your flight to Madrid is on a Sunday when prices can be found for as low as $896. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Madrid on Saturday is $1,238.

What is the cheapest time of day to depart on your flight to Madrid?

Flying to Madrid from Ontario in the evening is the least expensive time of day to depart. momondo users have found prices as low as $864 when looking at flights departing in the evening. Flights to Madrid are more costly in the afternoon, with an average ticket price of $1,053. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Ontario to Madrid flights?

You could potentially save up to 72% on your flight if you consider stops on a Ontario to Madrid flight.

When to book flights from Ontario to Madrid

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Madrid according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Madrid (ONT to MAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Madrid

Best Price Found	$328
Fastest flight time	13h 35m
Direct flights	None

The best one-way flight to Madrid from Ontario in the past 72 hours is $328. The best round-trip flight deal from Ontario to Madrid found on momondo in the last 72 hours is $608.

The fastest flight from Ontario to Madrid takes 13h 35m

There are no direct flights from Ontario to Madrid. There are no popular flight routes from Ontario to Madrid.

Search flight deals

Frequently asked questions about flying from Ontario to Madrid

How far is Ontario to Madrid Barajas by plane?
A flight from Ontario to Madrid Barajas will travel around 5789.5 mi. 13h 35m is a normal flight duration for this route.
When did momondo last update prices for flights from Ontario Airport to Madrid Barajas Airport?
Prices for flights from Ontario Airport to Madrid Barajas Airport are updated daily.
How many operators does momondo search for flights from Ontario Airport to Madrid Barajas Airport?
As of September 2026, there are 3 operators available to choose from for flights from Ontario Airport to Madrid Barajas Airport.
How old do you have to be to fly from Ontario Airport to Madrid Barajas Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Madrid Barajas Airport.
What documentation or ID do you need to fly to Madrid Barajas Airport?
The travel and health documents required for your trip to Madrid Barajas Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Madrid Barajas Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Ontario to Madrid?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ontario to Madrid is Iberia (42% of total bookings). The next most popular airlines are British Airways (35%) and American Airlines (24%).

Best airlines flying from Ontario to Madrid

Compare and see reviews for airlines that fly from Ontario to Madrid with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $439	Free Cancellation	Rating 7.0 12,082 reviews	Search American Airlines flights
British Airways	PriceFrom $474	Free Cancellation	Rating 6.7 8,228 reviews	Search British Airways flights
Iberia	PriceFrom $539	Free Cancellation	Rating 7.0 3,253 reviews	Search Iberia flights

Toledo

Segovia

Getafe

Fuenlabrada

Cuenca

Guadalajara

San Lorenzo de El Escorial

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Madrid?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Madrid for you.

Can I find flights from Ontario to Madrid with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to Madrid flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to Madrid?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Madrid.

I’m not ready to book a flight from Ontario to Madrid right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Madrid flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Ontario to Madrid from $328

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Madrid departing on 10/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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KLM flights from Ontario to Madrid

Our best KLM deals on Ontario to Madrid flight tickets

Iberia flights from Ontario to Madrid

Our best Iberia deals on Ontario to Madrid flight tickets

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See travel insights to Madrid from

How to get the cheapest flight ticket from Ontario to Madrid

What is the typical price of a round-trip flight between Ontario and Madrid?

What is the cheapest month to fly to Madrid?

What is the cheapest day to depart on your flight to Madrid?

What is the cheapest time of day to depart on your flight to Madrid?

Can stopping save me money on Ontario to Madrid flights?

What is the cheapest airline that flies from Ontario to Madrid Barajas?

What airlines fly to Madrid?

Which airport is the most popular layover for flights between Ontario and Madrid?

Which layover airport offers the lowest fares from Ontario to Madrid?

Which layover airport has the shortest travel time from Ontario to Madrid?

Which layover airport has the shortest connection time from Ontario to Madrid?

When to book flights from Ontario to Madrid

Cheap Ontario to Madrid (ONT to MAD) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Ontario to Madrid

Best airlines flying from Ontario to Madrid

Compare and see reviews for airlines that fly from Ontario to Madrid with momondo

Traveling to a place near Madrid?

Why use momondo?

An easier way to manage your Madrid trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Spain

Fly your favorite airline to Madrid

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Madrid

List of cabin classes available on flights landing in Madrid. Availability may vary depending on flight origin and airline.

Popular cities in Spain

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Ontario

According to popular flight searches on momondo this year

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