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$327+ 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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MAD
Jan 26 — Feb 21
Mon 1/26
Mon 2/2
1 adult, Economy
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Cheap 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 December 27, 2025.

This oojo deal was found by Cheapflights users on 12/26. 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.
Tue 12/302:49 pmONT - MAD
2 stops17h 06mBritish Airways
Mon 1/128:50 pmMAD - ONT
2 stops30h 55mBritish Airways
Deal found 12/26$856
This KLM deal was found by Cheapflights users on 12/26. 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.
Tue 12/307:05 amONT - MAD
1 stop17h 10mKLM
Mon 1/124:50 pmMAD - ONT
2 stops32h 22mKLM
Deal found 12/26$866
This United Airlines deal was found by Cheapflights users on 12/26. 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.
Tue 12/3011:59 pmONT - MAD
2 stops24h 16mUnited Airlines
Mon 1/1211:15 amMAD - ONT
3 stops33h 03mUnited Airlines
Deal found 12/26$917
This oojo deal was found by Cheapflights users on 12/25. 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.
Tue 12/307:10 amONT - MAD
1 stop17h 15mBritish Airways
Wed 1/1412:40 pmMAD - ONT
1 stop19h 08mBritish Airways
Deal found 12/25$986
This United Airlines deal was found by Cheapflights users on 12/25. 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 12/285:05 amONT - BIO
2 stops26h 35mUnited Airlines
Fri 1/96:45 amBIO - ONT
2 stops24h 13mUnited Airlines
Deal found 12/25$1,056
This Finnair deal was found by Cheapflights users on 12/26. 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.
Tue 12/3010:50 amONT - MAD
1 stop13h 35mMultiple Airlines
Mon 1/121:00 pmMAD - ONT
1 stop18h 48mMultiple Airlines
Deal found 12/26$1,176
This oojo deal was found by Cheapflights users on 12/26. 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.
Mon 12/2911:59 pmONT - AGP
2 stops33h 06mBritish Airways
Fri 1/97:50 pmAGP - ONT
2 stops31h 55mBritish Airways
Deal found 12/26$1,180
This United Airlines deal was found by Cheapflights users on 12/25. 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 12/286:39 pmONT - BIO
2 stops55h 11mUnited Airlines
Sun 1/116:45 amBIO - ONT
2 stops23h 13mUnited Airlines
Deal found 12/25$1,292
This Air Canada deal was found by Cheapflights users on 12/26. 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.
Sat 12/276:39 pmONT - MAD
2 stops28h 21mAir Canada
Thu 1/81:35 pmMAD - ONT
2 stops32h 13mAir Canada
Deal found 12/26$1,318
This Delta deal was found by Cheapflights users on 12/26. 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.
Sun 12/2811:10 amONT - MAD
1 stop13h 05mDelta
Thu 1/811:15 amMAD - ONT
1 stop18h 50mDelta
Deal found 12/26$1,321
This Expedia deal was found by Cheapflights users on 12/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:10 amONT - MAD
2 stops42h 50mIberia
Mon 1/53:45 pmMAD - ONT
2 stops40h 03mIberia
Deal found 12/24$1,409
This oojo deal was found by Cheapflights users on 12/26. 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.
Sat 12/274:47 pmONT - BCN
2 stops17h 23mBritish Airways
Tue 1/1310:40 amBCN - ONT
1 stop21h 08mBritish Airways
Deal found 12/26$1,422

Find flight deals from Ontario to Spain

Keep the following information in mind while searching for Ontario to Spain flight deals. Data was last updated December 27, 2025.

Round-trip from

$475
(oojo)

One-way from

$327
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$983
From Ontario to Spain
Search Deals
One-way flight from Ontario to Spain
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($187 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 December 27, 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

OntarioValencia

ONT - VLC

ONTVLC

Ontario

Thu 1/22

3:09 pm-8:15 pm

2 stops20h 06m

Valencia

Thu 2/5

7:30 am-6:45 pm

2 stops20h 15m

$477

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Tue 2/10

1:53 pm-9:55 pm

2 stops23h 02m

Bilbao

Tue 2/17

6:45 am-5:41 pm

2 stops19h 56m

$487

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Mon 2/2

3:09 pm-6:25 pm

2 stops18h 16m

Madrid Barajas

Wed 2/11

12:40 pm-10:48 pm

1 stop19h 08m

$510

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 4/15

12:39 pm-12:15 pm

1 stop14h 36m

Madrid Barajas

Wed 4/29

12:40 pm-8:58 pm

1 stop17h 18m

$523

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Mon 1/12

6:00 am-9:15 am

2 stops18h 15m

Madrid Barajas

Wed 1/21

11:15 am-10:53 pm

2 stops20h 38m

$527

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Fri 4/17

12:39 pm-12:15 pm

1 stop14h 36m

Madrid Barajas

Thu 4/30

12:40 pm-8:58 pm

1 stop17h 18m

$573

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 2/8

6:00 am-9:15 am

2 stops18h 15m

Madrid Barajas

Sun 2/15

5:55 am-5:41 pm

2 stops20h 46m

$573

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Wed 4/15

12:39 pm-12:15 pm

1 stop14h 36m

Madrid Barajas

Sun 5/3

12:40 pm-8:58 pm

1 stop17h 18m

$573

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Sun 2/8

6:00 am-9:25 am

1 stop18h 25m

Madrid Barajas

Sat 2/14

12:55 am-11:39 am

2 stops19h 44m

$577

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

Fri 1/16

6:00 am-9:15 am

2 stops18h 15m

Madrid Barajas

Wed 1/21

11:15 am-10:53 pm

2 stops20h 38m

$577

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

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, February is the cheapest month in which you can book a flight from Ontario to Spain (average of $339). Flying from Ontario to Spain in June is currently the most expensive (average of $612). 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 December 27, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 19% on flights from Ontario to Spain by exploring options for tickets in the afternoon.

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 December 27, 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
7.9
Good
8,019 reviews

Entertainment

7.9

Overall

7.9

Food

7.3

Boarding

8.1

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
7.9
Good
8,019 reviews
Delta
7.9
Good
8,019 reviews

Entertainment

7.9

Overall

7.9

Food

7.3

Boarding

8.1

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
9,116 reviews
Delta
7.9
Good
8,019 reviews

Entertainment

7.9

Overall

7.9

Food

7.3

Boarding

8.1

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
11,068 reviews
Delta
7.9
Good
8,019 reviews

Entertainment

7.9

Overall

7.9

Food

7.3

Boarding

8.1

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.
Iberia
7.0
Good
3,059 reviews
Delta
7.9
Good
8,019 reviews

Entertainment

7.9

Overall

7.9

Food

7.3

Boarding

8.1

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.
British Airways
6.7
Okay
7,614 reviews
Delta
7.9
Good
8,019 reviews

Entertainment

7.9

Overall

7.9

Food

7.3

Boarding

8.1

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 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.

  • How long is the flight from Ontario to Spain?

    Airlines like United Airlines, British Airways, and Delta fly from Ontario to Spain in about 14h 36m. The time it takes to get you to your destination can typically vary by up to 8h 26m. Airlines will cover a distance of 5790 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    When deciding which route to take from Ontario to Spain consider Ontario - Palma de Mallorca Son Sant Joan, Ontario - Barcelona-El Prat or Ontario - Madrid Barajas 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, February is the cheapest month in which you can book a flight from Ontario to Spain (average of $339). Flying from Ontario to Spain in June is currently the most expensive (average of $612). 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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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 December 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$444Average$873FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$497Average$897FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$517Average$886FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$595Average$1,201FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$688Average$1,100FlexibilityNo cancel feeOn-time69%

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