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$664+ Cheap flights from Marseille (MRS) to Ontario (ONT)

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 6/25. Fares are subject to change and may not be available on all flights or dates of travel.
MRS — ONT
Feb 10 — Feb 171
Tue 2/10
Tue 2/17
1 adult, Economy
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Cheap flight deals from Marseille to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Marseille (MRS) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 11, 2026.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$698
(United Airlines)

One-way from

$664
(American Airlines)

Popular in

July

Cheapest in

February

Average price

$729
Provider with most accurate pricing for Marseille-Ontario flight deals.
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Provider most trusted by Cheapflights users for Marseille-Ontario flights.
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From Marseille to Ontario
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One-way flight from Marseille to Ontario
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Highest demand for flights based on searches. 21% potential increase in price ($229 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Marseille to Ontario

Cheapest flights from Marseille to Ontario
Explore the most affordable flight options available from Marseille to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 11, 2026.

This American Airlines deal was found by Cheapflights users on 1/10. 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.
Wed 2/46:15 amMRS - ONT
2 stops25h 33mAmerican Airlines
Sun 2/157:00 amONT - MRS
2 stops18h 55mAmerican Airlines
Deal found 1/10$694
This American Airlines deal was found by Cheapflights users on 1/10. 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.
Sun 2/811:50 amMRS - ONT
2 stops19h 58mAmerican Airlines
Sun 2/157:00 amONT - MRS
2 stops18h 55mAmerican Airlines
Deal found 1/10$698
This United Airlines deal was found by Cheapflights users on 1/10. 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.
Wed 2/410:20 amMRS - ONT
2 stops21h 33mUnited Airlines
Thu 2/196:10 amONT - MRS
2 stops26h 25mUnited Airlines
Deal found 1/10$699
This United Airlines deal was found by Cheapflights users on 1/9. 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.
Sat 4/116:05 amMRS - ONT
2 stops23h 31mUnited Airlines
Tue 4/2111:05 amONT - MRS
2 stops17h 00mUnited Airlines
Deal found 1/9$700
This United Airlines deal was found by Cheapflights users on 1/9. 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 4/216:05 amMRS - ONT
2 stops23h 31mUnited Airlines
Thu 4/307:00 amONT - MRS
2 stops18h 20mUnited Airlines
Deal found 1/9$701
This Expedia deal was found by Cheapflights users on 1/9. 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.
Sun 2/811:50 amMRS - ONT
2 stops19h 58mBritish Airways
Sun 2/152:39 pmONT - MRS
2 stops16h 46mBritish Airways
Deal found 1/9$702
This American Airlines deal was found by Cheapflights users on 1/10. 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.
Wed 2/1811:30 amMRS - ONT
2 stops19h 49mAmerican Airlines
Wed 2/256:00 amONT - MRS
2 stops19h 55mAmerican Airlines
Deal found 1/10$704
This American Airlines deal was found by Cheapflights users on 1/9. 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.
Fri 4/37:25 amMRS - ONT
2 stops20h 44mAmerican Airlines
Wed 4/157:30 amONT - MRS
2 stops18h 20mAmerican Airlines
Deal found 1/9$705
This United Airlines deal was found by Cheapflights users on 1/10. 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.
Sat 1/2412:55 pmMRS - ONT
2 stops18h 58mUnited Airlines
Thu 2/266:00 amONT - MRS
2 stops26h 45mUnited Airlines
Deal found 1/10$711
This United Airlines deal was found by Cheapflights users on 1/10. 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.
Wed 2/188:25 amMRS - ONT
2 stops23h 32mUnited Airlines
Thu 3/51:40 pmONT - MRS
2 stops18h 55mUnited Airlines
Deal found 1/10$712
This United Airlines deal was found by Cheapflights users on 1/9. 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.
Fri 5/16:05 amMRS - ONT
2 stops23h 56mUnited Airlines
Fri 5/811:05 amONT - MRS
2 stops21h 50mUnited Airlines
Deal found 1/9$713
This British Airways deal was found by Cheapflights users on 1/8. 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.
Wed 1/2111:30 amMRS - ONT
2 stops44h 18mBritish Airways
Sun 1/256:00 amONT - MRS
2 stops19h 55mBritish Airways
Deal found 1/8$743

Cheapflights Fare Finder

 
Customize your flight search to find flights from Marseille to Ontario 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 January 11, 2026.
Use the filters below to find and compare flights from Marseille to Ontario that are best for you.

Fly from

Marseille

Fly to

Ontario

Route

Depart

Return

Price

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Mon 2/23

5:55 pm-10:06 am

2 stops25h 11m

Ontario

Wed 3/25

7:00 am-10:55 am

2 stops19h 55m

$694

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Mon 2/9

5:55 pm-10:08 am

2 stops25h 13m

Ontario

Sun 2/15

6:00 am-10:55 am

2 stops19h 55m

$694

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Sun 5/10

6:05 am-5:47 pm

2 stops20h 42m

Ontario

Sun 5/17

6:00 am-9:45 pm

2 stops30h 45m

$698

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Tue 2/24

10:30 am-10:00 pm

2 stops20h 30m

Ontario

Tue 3/3

1:45 pm-5:45 pm

2 stops19h 00m

$698

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Mon 3/2

6:50 am-5:41 pm

2 stops19h 51m

Ontario

Mon 3/16

6:37 pm-11:40 pm

2 stops21h 03m

$698

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Mon 4/6

6:05 am-10:26 pm

2 stops25h 21m

Ontario

Sun 4/12

5:10 am-9:45 pm

2 stops31h 35m

$698

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Tue 2/24

6:40 am-5:41 pm

2 stops20h 01m

Ontario

Mon 3/23

1:40 pm-5:55 pm

2 stops20h 15m

$699

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Thu 3/5

6:40 am-5:41 pm

2 stops20h 01m

Ontario

Tue 3/17

1:40 pm-5:45 pm

2 stops20h 05m

$699

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Sat 2/28

6:50 am-5:41 pm

2 stops19h 51m

Ontario

Tue 3/17

1:40 pm-5:45 pm

2 stops20h 05m

$699

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Sun 3/1

10:20 am-10:57 pm

2 stops21h 37m

Ontario

Mon 3/23

1:40 pm-5:55 pm

2 stops20h 15m

$699

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/9

Showing 1-10 of 18 results
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  • Most accurate provider: When it comes to deals on Marseille-Ontario flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Marseille-Ontario flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Marseille-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Marseille-Ontario flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Marseille-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Marseille to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Marseille 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 Marseille to Ontario

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

Currently, September is the cheapest month in which you can book a flight from Marseille to Ontario (average of $502). Flying from Marseille to Ontario in July is currently the most expensive (average of $748). 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.

Related info for your journey

Find useful and relevant information for your journey from Marseille to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Marseille to Ontario?

    There are many flights that can get you from Marseille to Ontario in 19h 20m. Fly via United Airlines or British Airways to get the fastest option. The distance between Marseille and Ontario is about 5980 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Marseille to Ontario (average of $502). Flying from Marseille to Ontario in July is currently the most expensive (average of $748). 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.

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