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$529+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
MRS — ONT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$529
(United Airlines)

Popular in

July

Cheapest in

January

Average price

$862
From Marseille to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($190 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 9/56:15 amMRS - ONT
2 stops23h 18mUnited Airlines
Thu 10/99:36 amONT - MRS
2 stops18h 19mUnited Airlines
Deal found 6/10$529
This Booking.com deal was found by Cheapflights users on 6/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/710:55 amMRS - ONT
2 stops20h 05mBritish Airways
Thu 11/203:05 pmONT - MRS
2 stops17h 15mBritish Airways
Deal found 6/10$535
This Iberia deal was found by Cheapflights users on 6/11. 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 6/2611:00 pmMRS - ONT
2 stops32h 14mIberia
Wed 7/912:46 pmONT - MRS
2 stops25h 34mIberia
Deal found 6/11$800
This American Airlines deal was found by Cheapflights users on 6/11. 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 12/2811:50 amMRS - ONT
2 stops38h 58mAmerican Airlines
Sat 1/103:00 pmONT - MRS
2 stops34h 55mAmerican Airlines
Deal found 6/11$1,140
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2911:00 amMRS - ONT
2 stops20h 10mMultiple Airlines
Wed 9/1012:46 pmONT - MRS
2 stops19h 09mMultiple Airlines
Deal found 6/12$1,841

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 June 12, 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

Fri 9/5

6:15 am-8:33 pm

2 stops23h 18m

Ontario

Thu 10/9

9:36 am-12:55 pm

2 stops18h 19m

$529

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Fri 11/7

10:55 am-10:00 pm

2 stops20h 05m

Ontario

Thu 11/20

3:05 pm-5:20 pm

2 stops17h 15m

$535

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Thu 6/26

11:00 pm-10:14 pm

2 stops32h 14m

Ontario

Wed 7/9

12:46 pm-11:20 pm

2 stops25h 34m

$800

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Fri 8/29

11:00 am-10:10 pm

2 stops20h 10m

Ontario

Wed 9/10

12:46 pm-4:55 pm

2 stops19h 09m

$1,841

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Tue 10/14

6:15 am-10:00 pm

2 stops24h 45m

$956

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Sun 10/19

6:15 am-10:00 pm

2 stops24h 45m

$973

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Tue 7/29

12:55 pm-10:34 pm

2 stops18h 39m

$1,369

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Mon 7/14

6:40 am-10:06 pm

3 stops24h 26m

$1,804

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated June 12, 2025.
United Airlines
7.4
Good
8,790 reviews

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,790 reviews
United Airlines
7.4
Good
8,790 reviews

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,790 reviews

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Iberia
7.0
Good
2,776 reviews
United Airlines
7.4
Good
8,790 reviews

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
British Airways
6.6
Okay
7,008 reviews
United Airlines
7.4
Good
8,790 reviews

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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.

  • 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 ($956), Iberia ($973), and British Airways ($1,369).

  • 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.

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