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$336+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MAD
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
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 julio 3, 2025.

Round-trip from

$402
(KLM)

One-way from

$336
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$969
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. 23% potential increase in price ($224 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 July 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 julio 3, 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.
dom. 8/177:05 amONT - MAD
1 stop17h 30mKLM
vie. 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.
mié. 10/297:00 amONT - MAD
2 stops16h 00mDelta
vie. 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.
mié. 10/2910:55 amONT - MAD
1 stop14h 30mIberia
jue. 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.
dom. 10/125:05 amONT - MAD
2 stops16h 35mUnited Airlines
mar. 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.
mié. 9/242:54 pmONT - MAD
2 stops20h 01mBritish Airways
mié. 10/14:00 pmMAD - ONT
1 stop30h 19mBritish Airways
Deal found 7/1$506
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.
vie. 9/2610:00 pmONT - AGP
2 stops28h 45mDelta
sáb. 10/45:55 amAGP - ONT
2 stops25h 45mDelta
Deal found 7/1$626
This United Airlines deal was found by Cheapflights users on 7/3. 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.
dom. 10/126:37 pmONT - VLC
2 stops38h 23mUnited Airlines
lun. 10/2712:55 pmVLC - ONT
2 stops60h 39mUnited Airlines
Deal found 7/3$641
This United Airlines deal was found by Cheapflights users on 7/3. 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.
lun. 11/37:00 amONT - BCN
1 stop21h 05mUnited Airlines
mié. 11/121:35 pmBCN - ONT
3 stops42h 10mUnited Airlines
Deal found 7/3$660
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.
sáb. 9/272:54 pmONT - BCN
2 stops19h 21mIberia
mié. 10/2212:20 pmBCN - ONT
1 stop19h 22mIberia
Deal found 7/1$676
This British Airways deal was found by Cheapflights users on 7/2. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/172:31 pmONT - AGP
2 stops20h 24mBritish Airways
mar. 9/211:35 amAGP - ONT
2 stops20h 13mBritish Airways
Deal found 7/2$685
This Air Canada deal was found by Cheapflights users on 7/2. 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.
mar. 12/96:42 pmONT - BCN
2 stops29h 53mMultiple Airlines
mar. 12/231:35 pmBCN - ONT
3 stops31h 58mMultiple Airlines
Deal found 7/2$685
This Virgin Atlantic deal was found by Cheapflights users on 7/3. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/97:00 amONT - BCN
1 stop16h 40mVirgin Atlantic
mar. 12/2310:55 amBCN - ONT
2 stops21h 56mVirgin Atlantic
Deal found 7/3$687

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 julio 3, 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

dom. 8/17

7:05 am-9:35 am

1 stop17h 30m

Madrid Barajas

vie. 9/5

10:05 am-7:11 pm

1 stop18h 06m

$402

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

mié. 10/29

7:00 am-7:00 am

2 stops16h 00m

Madrid Barajas

vie. 11/21

10:00 am-10:41 pm

2 stops21h 41m

$407

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

mié. 10/29

10:55 am-9:25 am

1 stop14h 30m

Madrid Barajas

mar. 11/11

1:00 pm-10:00 pm

1 stop18h 00m

$497

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

dom. 10/12

5:05 am-6:40 am

2 stops16h 35m

Madrid Barajas

mar. 10/28

6:05 am-5:34 pm

2 stops19h 29m

$503

OntarioMadrid

ONT - MAD

ONTMAD

Ontario

mié. 9/24

2:54 pm-7:55 pm

2 stops20h 01m

Madrid Barajas

mié. 10/1

4:00 pm-1:19 pm

1 stop30h 19m

$506

OntarioMálaga

ONT - AGP

ONTAGP

Ontario

vie. 9/26

10:00 pm-11:45 am

2 stops28h 45m

Malaga

sáb. 10/4

5:55 am-10:40 pm

2 stops25h 45m

$626

OntarioValencia

ONT - VLC

ONTVLC

Ontario

dom. 10/12

6:37 pm-6:00 pm

2 stops38h 23m

Valencia

lun. 10/27

12:55 pm-5:34 pm

2 stops60h 39m

$641

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

lun. 11/3

7:00 am-1:05 pm

1 stop21h 05m

Barcelona-El Prat

mié. 11/12

1:35 pm-10:45 pm

3 stops42h 10m

$660

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

sáb. 9/27

2:54 pm-7:15 pm

2 stops19h 21m

Barcelona-El Prat

mié. 10/22

12:20 pm-10:42 pm

1 stop19h 22m

$676

OntarioBarcelona

ONT - BCN

ONTBCN

Ontario

mar. 12/9

6:42 pm-9:35 am

2 stops29h 53m

Barcelona-El Prat

mar. 12/23

1:35 pm-12:33 pm

3 stops31h 58m

$685

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 $1,054). 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 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 julio 3, 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 julio 3, 2025.
Read through reviews of airlines operating flights from Ontario to Spain, such as Delta, KLM, and Air France. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

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
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

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.
KLM
7.8
Good
1,367 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

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.
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

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
8,861 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

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.
Virgin Atlantic
7.4
Good
654 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

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?

    $408 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Air Canada and KLM, with prices starting from $415 and $420, 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 - Bilbao 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 $1,054). 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

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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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$489Average$988FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$492Average$811FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$504Average$962FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$544Average$815FlexibilityNo cancel feeOn-time70%
DeltaCheapest$566Average$801FlexibilityNo cancel feeOn-timeN/A

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