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$539+ Cheap flights from Marseille (MRS) to Ontario (ONT)

This is the cheapest round-trip 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.
MRS — ONT
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
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 August 20, 2025.

Round-trip from

$539
(United Airlines)

Popular in

July

Cheapest in

January

Average price

$1,117
From Marseille to Ontario
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Highest demand for flights based on searches. 18% potential increase in price ($192 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 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 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 August 20, 2025.

This United Airlines deal was found by Cheapflights users on 8/19. 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 9/106:05 amMRS - ONT
2 stops20h 24mUnited Airlines
Mon 9/291:15 pmONT - MRS
2 stops18h 40mUnited Airlines
Deal found 8/19$539
This United Airlines deal was found by Cheapflights users on 8/19. 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 10/296:40 amMRS - ONT
2 stops18h 54mUnited Airlines
Wed 11/51:33 pmONT - MRS
2 stops19h 12mUnited Airlines
Deal found 8/19$540
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Mon 10/206:15 amMRS - ONT
2 stops25h 37mUnited Airlines
Wed 10/295:05 amONT - MRS
2 stops28h 40mUnited Airlines
Deal found 8/18$541
This United Airlines deal was found by Cheapflights users on 8/19. 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 11/1210:20 amMRS - ONT
2 stops21h 31mUnited Airlines
Tue 11/251:40 pmONT - MRS
2 stops19h 05mUnited Airlines
Deal found 8/19$542
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Mon 11/1010:30 amMRS - ONT
2 stops20h 19mUnited Airlines
Mon 11/247:00 amONT - MRS
2 stops17h 50mUnited Airlines
Deal found 8/18$543
This American Airlines deal was found by Cheapflights users on 8/19. 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 10/2411:00 amMRS - ONT
2 stops19h 49mAmerican Airlines
Thu 10/3012:48 pmONT - MRS
2 stops16h 02mAmerican Airlines
Deal found 8/19$544
This United Airlines deal was found by Cheapflights users on 8/19. 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 10/36:00 amMRS - ONT
2 stops20h 23mUnited Airlines
Tue 10/79:36 amONT - MRS
2 stops22h 19mUnited Airlines
Deal found 8/19$552
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/266:00 amMRS - ONT
2 stops20h 23mUnited Airlines
Thu 10/161:15 pmONT - MRS
2 stops18h 40mUnited Airlines
Deal found 8/18$554
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Thu 10/1610:40 amMRS - ONT
2 stops20h 38mAmerican Airlines
Sun 11/27:00 amONT - MRS
2 stops18h 55mAmerican Airlines
Deal found 8/19$702
This Iberia deal was found by Cheapflights users on 8/19. 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.
Thu 10/2311:35 pmMRS - ONT
2 stops28h 28mIberia
Tue 11/46:10 amONT - MRS
2 stops26h 10mIberia
Deal found 8/19$758
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Mon 10/206:15 amMRS - ONT
2 stops25h 37mUnited Airlines
Fri 10/315:05 amONT - MRS
2 stops28h 40mUnited Airlines
Deal found 8/19$763
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/176:05 amMRS - ONT
2 stops20h 32mUnited Airlines
Wed 9/241:15 pmONT - MRS
2 stops18h 40mUnited Airlines
Deal found 8/18$765

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 August 20, 2025.
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

Wed 9/10

6:05 am-5:29 pm

2 stops20h 24m

Ontario

Mon 9/29

1:15 pm-4:55 pm

2 stops18h 40m

$539

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Wed 9/10

6:05 am-8:43 pm

2 stops23h 38m

Ontario

Tue 9/30

6:36 pm-9:40 pm

2 stops18h 04m

$539

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Wed 9/10

6:05 am-5:29 pm

2 stops20h 24m

Ontario

Sun 9/28

1:15 pm-9:40 pm

2 stops23h 25m

$539

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Fri 9/5

6:15 am-8:33 pm

2 stops23h 18m

Ontario

Sun 9/7

1:15 pm-4:55 pm

2 stops18h 40m

$539

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Wed 10/29

6:40 am-5:34 pm

2 stops18h 54m

Ontario

Wed 11/5

1:33 pm-5:45 pm

2 stops19h 12m

$540

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Wed 10/29

6:40 am-5:34 pm

2 stops18h 54m

Ontario

Tue 11/11

7:00 am-9:30 am

2 stops17h 30m

$541

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Tue 11/11

6:40 am-6:36 pm

2 stops20h 56m

Ontario

Sun 11/23

7:00 am-9:45 am

2 stops17h 45m

$541

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Tue 10/21

6:05 am-10:52 pm

2 stops25h 47m

Ontario

Thu 10/30

5:05 am-5:45 pm

2 stops28h 40m

$541

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Wed 10/22

6:05 am-8:24 pm

2 stops23h 19m

Ontario

Wed 10/29

5:05 am-5:45 pm

2 stops28h 40m

$541

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Mon 10/20

6:15 am-10:52 pm

2 stops25h 37m

Ontario

Wed 10/29

5:05 am-5:45 pm

2 stops28h 40m

$541

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 22 results
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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, August is the cheapest month in which you can book a flight from Marseille to Ontario (average of $246). Flying from Marseille to Ontario in March is currently the most expensive (average of $328). 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 20h 24m. Fly via United Airlines to get the fastest option. The distance between Marseille and Ontario is about 5980 mi.

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

    The cheapest airlines for a one-way flight from Marseille to Ontario are American Airlines ($973), British Airways ($1,592), and Iberia ($1,614).

  • 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, August is the cheapest month in which you can book a flight from Marseille to Ontario (average of $246). Flying from Marseille to Ontario in March is currently the most expensive (average of $328). 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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