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$363+ Cheap flights from Ontario (ONT) to Spain

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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MAD
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheap flight deals from Ontario to Spain

Keep the following information in mind while searching for Ontario to Spain flight deals. Data was last updated agosto 14, 2025.

Round-trip from

$499
(United Airlines)

One-way from

$363
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$711
From Ontario to Spain
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One-way flight from Ontario to Spain
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Highest demand for flights based on searches. 22% potential increase in price ($213 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Ontario to Spain

Cheapest flights from Ontario to Spain
Explore the most affordable flight options available from Ontario to Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 14, 2025.

This United Airlines deal was found by Cheapflights users on 8/13. 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.
mar. 11/185:05 amONT - MAD
2 stops17h 55mUnited Airlines
mié. 11/261:35 pmMAD - ONT
2 stops34h 46mUnited Airlines
Deal found 8/13$499
This Mytrip deal was found by Cheapflights users on 8/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/226:38 pmONT - MAD
2 stops27h 02mAir Canada
mar. 9/3012:30 pmMAD - ONT
2 stops61h 53mAir Canada
Deal found 8/13$520
This Iberia deal was found by Cheapflights users on 8/12. 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.
dom. 11/96:10 amONT - MAD
1 stop18h 15mIberia
mié. 11/191:00 pmMAD - ONT
1 stop18h 29mIberia
Deal found 8/12$522
This United Airlines deal was found by Cheapflights users on 8/14. 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.
mié. 11/195:05 amONT - MAD
2 stops30h 10mUnited Airlines
mié. 11/261:35 pmMAD - ONT
2 stops34h 46mUnited Airlines
Deal found 8/14$525
This Finnair deal was found by Cheapflights users on 8/13. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/510:47 amONT - MAD
1 stop13h 38mMultiple Airlines
mié. 11/124:25 pmMAD - ONT
2 stops26h 32mMultiple Airlines
Deal found 8/13$526
This Finnair deal was found by Cheapflights users on 8/13. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/2912:45 pmONT - MAD
1 stop16h 40mMultiple Airlines
mié. 10/1511:35 amMAD - ONT
2 stops20h 07mMultiple Airlines
Deal found 8/13$527
This United Airlines deal was found by Cheapflights users on 8/14. 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.
mar. 11/186:00 amONT - MAD
2 stops17h 00mUnited Airlines
mar. 11/256:00 amMAD - ONT
2 stops24h 37mUnited Airlines
Deal found 8/14$528
This American Airlines deal was found by Cheapflights users on 8/13. 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.
lun. 9/221:10 pmONT - MAD
2 stops16h 15mAmerican Airlines
mar. 9/304:00 pmMAD - ONT
1 stop27h 04mAmerican Airlines
Deal found 8/13$532
This United Airlines deal was found by Cheapflights users on 8/13. 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.
mar. 10/77:02 amONT - MAD
2 stops16h 18mUnited Airlines
mar. 10/2110:50 amMAD - ONT
2 stops21h 02mUnited Airlines
Deal found 8/13$533
This oojo deal was found by Cheapflights users on 8/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/53:08 pmONT - MAD
2 stops18h 22mBritish Airways
mié. 11/1912:00 pmMAD - ONT
2 stops19h 29mBritish Airways
Deal found 8/12$548
This United Airlines deal was found by Cheapflights users on 8/13. 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.
mié. 11/56:00 amONT - MAD
2 stops25h 00mUnited Airlines
mié. 11/1211:15 amMAD - ONT
2 stops20h 16mUnited Airlines
Deal found 8/13$553
This United Airlines deal was found by Cheapflights users on 8/13. 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.
mié. 10/16:00 amONT - MAD
2 stops25h 15mUnited Airlines
mié. 10/156:00 amMAD - ONT
2 stops24h 24mUnited Airlines
Deal found 8/13$554

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Spain 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 agosto 14, 2025.
Use the filters below to find and compare flights from Ontario to Spain that are best for you.

Fly from

Ontario

Fly to

Spain

Route

Depart

Return

Price

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

mar. 11/18

5:05 am-8:00 am

2 stops17h 55m

Madrid Barajas

mié. 11/26

1:35 pm-3:21 pm

2 stops34h 46m

$499

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

lun. 9/22

6:38 pm-6:40 am

2 stops27h 02m

Madrid Barajas

mar. 9/30

12:30 pm-5:23 pm

2 stops61h 53m

$520

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

mar. 11/18

7:00 am-9:25 am

1 stop17h 25m

Madrid Barajas

mar. 11/25

1:00 pm-9:11 pm

1 stop17h 11m

$522

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

dom. 11/9

6:10 am-9:25 am

1 stop18h 15m

Madrid Barajas

mié. 11/19

1:00 pm-10:29 pm

1 stop18h 29m

$522

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

mar. 12/2

10:47 am-9:25 am

1 stop13h 38m

Madrid Barajas

mar. 12/9

1:00 pm-8:12 pm

1 stop16h 12m

$522

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

mié. 11/5

7:00 am-9:25 am

1 stop17h 25m

Madrid Barajas

mié. 11/12

1:00 pm-10:29 pm

1 stop18h 29m

$522

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

dom. 11/9

7:00 am-9:25 am

1 stop17h 25m

Madrid Barajas

vie. 11/21

1:00 pm-10:23 pm

1 stop18h 23m

$522

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

lun. 9/29

2:54 pm-2:25 pm

1 stop14h 31m

Madrid Barajas

mié. 10/15

4:00 pm-10:42 pm

1 stop15h 42m

$522

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

mié. 11/19

5:05 am-8:15 pm

2 stops30h 10m

Madrid Barajas

mié. 11/26

1:35 pm-3:21 pm

2 stops34h 46m

$525

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

mar. 11/11

7:00 am-9:15 am

2 stops17h 15m

Madrid Barajas

vie. 11/21

11:15 am-10:31 pm

2 stops20h 16m

$526

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Spain

Have a flexible travel schedule? Discover the best time to fly to Spain 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 Spain

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

Currently, November is the cheapest month in which you can book a flight from Ontario to Spain (average of $543). Flying from Ontario to Spain in June is currently the most expensive (average of $1,053). 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 ES?

Find hourly flight availability from Ontario to Spain. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 14, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Spain as you normally would.

Reviews of airlines servicing Spain

Get insights into the airlines that provide service to Spain. 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 Spain. Reviews last updated agosto 14, 2025.
Read through reviews of airlines operating flights from Ontario to Spain, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

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
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

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
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

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
7,980 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

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.
Iberia
7.0
Good
2,878 reviews
Delta
8.0
Very good
7,980 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

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.
British Airways
6.7
Okay
7,266 reviews
Delta
8.0
Very good
7,980 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

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 Spain. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Spain?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Spain. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

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

    $425 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Iberia and United Airlines, with prices starting from $443 and $448, respectively.

  • What are the most popular routes from Ontario to Spain?

    When deciding which route to take from Ontario to Spain consider Ontario - Madrid Barajas, Ontario - Barcelona-El Prat or Ontario - A Coruña as they are the most popular.

  • Can I find deals for flights from Ontario to Spain that include hotel bookings?

    Yes. In addition to deals on Ontario to Spain flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Spain?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Spain.

  • Can I find deals for business class flights from Ontario to Spain?

    Yes. Cheapflights offers flight deals from Ontario to Spain 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 Spain?

    Currently, November is the cheapest month in which you can book a flight from Ontario to Spain (average of $543). Flying from Ontario to Spain in June is currently the most expensive (average of $1,053). 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

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Alternative routes for Ontario to Spain

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Ontario to Spain

Discover the top 5 airlines that operate flights from Ontario to Spain. 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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$444Average$801FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$492Average$813FlexibilityNo cancel feeOn-time69%
IberiaCheapest$496Average$967FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$504Average$990FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$544Average$845FlexibilityNo cancel feeOn-time70%

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