What is the cheapest airline that flies from Ontario to Spain?

British Airways, American Airlines, and United Airlines are the most popular carriers operating from Ontario to Spain

What airlines fly to Spain?

Iberia, TAP AIR PORTUGAL and British Airways are the top three most popular airlines that fly to Spain from Ontario according to our data. Iberia is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Spain. Keep in mind that there are 23 different airlines that fly to Spain on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Ontario Airport to Spain are updated daily.

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

The number of operators available for flights from Ontario Airport to Spain is 4 as of August 2026.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Spain.

What documentation or ID do you need to fly to Spain?

The travel and health documents required for your trip to Spain 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 Spain. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$345 Cheap Flights from Ontario to Spain in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Spain

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 9:25 amONT Ontario-MAD Madrid Barajas

17h 25m1 stop Dallas/Fort Worth

12:40 pm - 9:28 pmMAD Madrid Barajas-ONT Ontario

17h 48m1 stop Dallas/Fort Worth

$740Iberia

Sun, Feb 14 - Tue, Feb 23

6:00 am - 8:00 amONT Ontario-MAD Madrid Barajas

17h 00m2 stops San Francisco Montreal Pierre Elliott Trudeau Intl

1:25 pm - 6:47 pmMAD Madrid Barajas-ONT Ontario

38h 22m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$747United Airlines

Wed, Nov 11 - Wed, Nov 18

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

13h 40m1 stop Dallas/Fort Worth

3:55 pm - 9:35 amMAD Madrid Barajas-ONT Ontario

26h 40m1 stop Dallas/Fort Worth

$748Multiple Airlines

Mon, Oct 5 - Wed, Oct 21

6:53 pm - 8:00 amONT Ontario-MAD Madrid Barajas

28h 07m2 stops San Francisco Montreal Pierre Elliott Trudeau Intl

1:25 pm - 9:57 amMAD Madrid Barajas-ONT Ontario

29h 32m2 stops Montreal Pierre Elliott Trudeau Intl San Francisco

$752Air Canada

Sun, Feb 14 - Tue, Feb 23

2:22 pm - 2:25 pmONT Ontario-MAD Madrid Barajas

15h 03m1 stop Dallas/Fort Worth

3:55 pm - 11:52 pmMAD Madrid Barajas-ONT Ontario

16h 57m1 stop Dallas/Fort Worth

$758Iberia

Tue, Oct 13 - Thu, Oct 22

11:10 am - 3:20 pmONT Ontario-PMI Palma de Mallorca Son Sant Joan

19h 10m2 stops San Francisco Frankfurt am Main

10:10 am - 9:59 pmPMI Palma de Mallorca Son Sant Joan-ONT Ontario

20h 49m2 stops Newark Houston George Bush Intcntl

$761United Airlines

Wed, Oct 14 - Fri, Oct 23

6:00 am - 7:45 amONT Ontario-MAD Madrid Barajas

16h 45m1 stop Dallas/Fort Worth

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

18h 32m1 stop Charlotte Douglas

$764British Airways

Tue, Nov 17 - Tue, Dec 15

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

15h 45m1 stop Dallas/Fort Worth

11:05 am - 6:47 pmMAD Madrid Barajas-ONT Ontario

16h 42m1 stop Dallas/Fort Worth

$765British Airways

Wed, Nov 11 - Wed, Nov 18

1:05 pm - 2:25 pmONT Ontario-MAD Madrid Barajas

16h 20m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

10:00 am - 9:11 pmMAD Madrid Barajas-ONT Ontario

19h 11m2 stops Miami Dallas/Fort Worth

$784American Airlines

Tue, Oct 13 - Tue, Oct 27

1:04 pm - 7:35 pmONT Ontario-VLC Valencia

21h 31m2 stops Phoenix Sky Harbor Intl London Heathrow

6:15 am - 11:52 pmVLC Valencia-ONT Ontario

26h 37m2 stops Madrid Barajas Dallas/Fort Worth

$836American Airlines

Tue, Sep 29 - Tue, Oct 6

Cheap last minute flights

Enter your travel dates to find the best prices.

5:05 pm - 7:40 pmONT Ontario-PMI Palma de Mallorca Son Sant Joan

17h 35m2 stops Salt Lake City Amsterdam Schiphol

7:05 am - 7:53 pmPMI Palma de Mallorca Son Sant Joan-ONT Ontario

21h 48m2 stops Barcelona-El Prat Atlanta Hartsfield-Jackson

$1,057KLM

Wed, Aug 19 - Wed, Sep 2

1:18 pm - 3:20 pmONT Ontario-PMI Palma de Mallorca Son Sant Joan

17h 02m2 stops Denver Intl Frankfurt am Main

10:00 am - 10:35 pmPMI Palma de Mallorca Son Sant Joan-ONT Ontario

21h 35m2 stops Newark Chicago O'Hare Intl

$1,068United Airlines

Wed, Aug 19 - Wed, Aug 26

1:18 pm - 3:20 pmONT Ontario-PMI Palma de Mallorca Son Sant Joan

17h 02m2 stops Denver Intl Frankfurt am Main

12:50 pm - 10:59 pmPMI Palma de Mallorca Son Sant Joan-ONT Ontario

19h 09m2 stops Frankfurt am Main San Francisco

$1,068United Airlines

Wed, Aug 19 - Thu, Aug 27

7:12 am - 4:05 pmONT Ontario-BCN Barcelona-El Prat

23h 53m2 stops Portland Frankfurt am Main

8:00 am - 10:37 pmBCN Barcelona-El Prat-ONT Ontario

23h 37m2 stops Frankfurt am Main New York John F Kennedy Intl

$1,080Multiple Airlines

Sat, Aug 22 - Wed, Aug 26

2:27 pm - 2:25 pmONT Ontario-MAD Madrid Barajas

14h 58m1 stop Dallas/Fort Worth

3:55 pm - 10:59 pmMAD Madrid Barajas-ONT Ontario

16h 04m1 stop Dallas/Fort Worth

$1,126Iberia

Sun, Aug 23 - Sat, Sep 5

5:00 am - 8:50 amONT Ontario-MAD Madrid Barajas

18h 50m2 stops Denver Intl Toronto Pearson Intl

1:30 pm - 12:18 pmMAD Madrid Barajas-ONT Ontario

31h 48m2 stops Toronto Pearson Intl San Francisco

$1,128Air Canada

Thu, Aug 20 - Thu, Sep 24

1:18 pm - 3:20 pmONT Ontario-PMI Palma de Mallorca Son Sant Joan

17h 02m2 stops Denver Intl Frankfurt am Main

9:05 am - 8:53 pmPMI Palma de Mallorca Son Sant Joan-ONT Ontario

20h 48m2 stops Frankfurt am Main Denver Intl

$1,128United Airlines

Wed, Aug 19 - Sun, Aug 23

6:00 am - 9:05 amONT Ontario-MAD Madrid Barajas

18h 05m1 stop Dallas/Fort Worth

12:40 pm - 9:09 pmMAD Madrid Barajas-ONT Ontario

17h 29m1 stop Dallas/Fort Worth

$1,131British Airways

Thu, Aug 20 - Thu, Sep 24

10:29 am - 9:05 amONT Ontario-MAD Madrid Barajas

13h 36m1 stop Dallas/Fort Worth

3:55 pm - 10:59 pmMAD Madrid Barajas-ONT Ontario

16h 04m1 stop Dallas/Fort Worth

$1,136British Airways

Wed, Aug 19 - Sun, Aug 30

10:29 am - 9:05 amONT Ontario-MAD Madrid Barajas

13h 36m1 stop Dallas/Fort Worth

3:55 pm - 10:59 pmMAD Madrid Barajas-ONT Ontario

16h 04m1 stop Dallas/Fort Worth

$1,324Iberia

Wed, Aug 19 - Wed, Aug 26

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Iberia flights from Ontario to Spain

Our best Iberia deals on Ontario to Spain flight tickets

Iberia

Feb 14

ONT7:00 amOntario

17h 25m

1 stop

MAD9:25 amMadrid Barajas

Feb 23

MAD12:40 pmMadrid Barajas

17h 48m

1 stop

ONT9:28 pmOntario

$740

Iberia

Oct 13

ONT2:22 pmOntario

15h 03m

1 stop

MAD2:25 pmMadrid Barajas

Oct 27

MAD6:05 pmMadrid Barajas

32h 39m

2 stops

ONT6:44 pmOntario

$770

Iberia

Jan 21

ONT6:00 amOntario

18h 20m

1 stop

MAD9:20 amMadrid Barajas

Jan 27

MAD1:00 pmMadrid Barajas

18h 45m

1 stop

ONT10:45 pmOntario

$788

United Airlines flights from Ontario to Spain

Our best United Airlines deals on Ontario to Spain flight tickets

United Airlines

Nov 11

ONT6:00 amOntario

17h 00m

2 stops

MAD8:00 amMadrid Barajas

Nov 18

MAD1:25 pmMadrid Barajas

38h 22m

2 stops

ONT6:47 pmOntario

$747

United Airlines

Oct 14

ONT11:10 amOntario

19h 10m

2 stops

PMI3:20 pmPalma de Mallorca Son Sant Joan

Oct 23

PMI10:10 amPalma de Mallorca Son Sant Joan

20h 49m

2 stops

ONT9:59 pmOntario

$761

United Airlines

Nov 17

ONT6:00 amOntario

17h 00m

2 stops

MAD8:00 amMadrid Barajas

Dec 15

MAD6:05 amMadrid Barajas

23h 15m

2 stops

ONT8:20 pmOntario

$767

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Sun 2/14

7:00 am-9:25 am

1 stop17h 25m

Madrid Barajas

Tue 2/23

12:40 pm-9:28 pm

1 stop17h 48m

$740

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Wed 11/11

6:00 am-8:00 am

2 stops17h 00m

Madrid Barajas

Wed 11/18

1:25 pm-6:47 pm

2 stops38h 22m

$747

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Mon 10/5

10:25 am-9:05 am

1 stop13h 40m

Madrid Barajas

Wed 10/21

3:55 pm-9:35 am

1 stop26h 40m

$748

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Sun 2/14

6:53 pm-8:00 am

2 stops28h 07m

Madrid Barajas

Tue 2/23

1:25 pm-9:57 am

2 stops29h 32m

$752

Quickest round-trip

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Tue 10/13

2:22 pm-2:25 pm

1 stop15h 03m

Madrid Barajas

Thu 10/22

3:55 pm-11:52 pm

1 stop16h 57m

$758

OntarioPalma de Mallorca

ONT Ontario - PMI Palma de Mallorca Son Sant Joan

ONTPMI

Ontario

Wed 10/14

11:10 am-3:20 pm

2 stops19h 10m

Palma de Mallorca Son Sant Joan

Fri 10/23

10:10 am-9:59 pm

2 stops20h 49m

$761

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Tue 11/17

6:00 am-7:45 am

1 stop16h 45m

Madrid Barajas

Tue 12/15

12:40 pm-10:12 pm

1 stop18h 32m

$764

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Wed 11/11

7:00 am-7:45 am

1 stop15h 45m

Madrid Barajas

Wed 11/18

11:05 am-6:47 pm

1 stop16h 42m

$765

OntarioMadrid

ONT Ontario - MAD Madrid Barajas

ONTMAD

Ontario

Tue 10/13

1:05 pm-2:25 pm

2 stops16h 20m

Madrid Barajas

Tue 10/27

10:00 am-9:11 pm

2 stops19h 11m

$784

OntarioValencia

ONT Ontario - VLC Valencia

ONTVLC

Ontario

Tue 9/29

1:04 pm-7:35 pm

2 stops21h 31m

Valencia

Tue 10/6

6:15 am-11:52 pm

2 stops26h 37m

$836

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 Spain

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

What is the cheapest month to fly to Spain?

If you don’t want to visit Spain in January, then you should wait until February to fly from Ontario, when ticket prices are also cheap, with an average price of $640.

Can stopping save me money on Ontario to Spain flights?

You could potentially save up to 42% on your flight if you consider stops on a Ontario to Spain flight.

Cheap Ontario to Spain flight deals and tips

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

Best Price Found	$345
Fastest flight time	13h 36m
Direct flights	None

The best one-way flight to Spain from Ontario in the past 72 hours is $345. The best round-trip flight deal from Ontario to Spain found on momondo in the last 72 hours is $740.

The fastest flight from Ontario to Spain takes 13h 36m

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

Search flight deals

Frequently asked questions about flying from Ontario to Spain

When did momondo last update prices for flights from Ontario Airport to Spain?
Prices for flights from Ontario Airport to Spain are updated daily.
How many operators does momondo search for flights from Ontario Airport to Spain?
The number of operators available for flights from Ontario Airport to Spain is 4 as of August 2026.
How old do you have to be to fly from Ontario Airport to Spain?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Spain.
What documentation or ID do you need to fly to Spain?
The travel and health documents required for your trip to Spain 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 Spain. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Ontario to Spain

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

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $439	Free Cancellation	Rating 7.1 11,958 reviews	Search American Airlines flights
British Airways	PriceFrom $504	Free Cancellation	Rating 6.7 8,178 reviews	Search British Airways flights
Iberia	PriceFrom $539	Free Cancellation	Rating 7.0 3,258 reviews	Search Iberia flights
United Airlines	PriceFrom $874	Free Cancellation	Rating 7.4 10,102 reviews	Search United Airlines flights

Why use momondo?

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

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 Spain for you.

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

Yes. All flights to Spain from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 Spain.

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

Yes. momondo can track prices for Ontario to Spain 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.