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$544+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
MRS — ONT
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$544
(United Airlines)

Popular in

July

Cheapest in

January

Average price

$1,151
From Marseille to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($191 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 July 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 July 3, 2025.

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.
Tue 9/236:05 amMRS - ONT
2 stops23h 38mUnited Airlines
Wed 10/151:15 pmONT - MRS
2 stops23h 25mUnited Airlines
Deal found 7/3$544
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1111:45 amMRS - ONT
2 stops19h 15mBritish Airways
Tue 11/183:05 pmONT - MRS
2 stops15h 45mBritish Airways
Deal found 7/1$548
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/266:15 amMRS - ONT
2 stops21h 39mIberia
Wed 10/1512:51 pmONT - MRS
2 stops19h 39mIberia
Deal found 7/3$623
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/236:15 amMRS - ONT
2 stops21h 38mAmerican Airlines
Mon 8/42:37 pmONT - MRS
2 stops17h 53mAmerican Airlines
Deal found 7/1$980

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 July 3, 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

Tue 9/23

6:05 am-8:43 pm

2 stops23h 38m

Ontario

Wed 10/15

1:15 pm-9:40 pm

2 stops23h 25m

$544

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Tue 11/11

11:45 am-10:00 pm

2 stops19h 15m

Ontario

Tue 11/18

3:05 pm-3:50 pm

2 stops15h 45m

$548

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Fri 9/26

6:15 am-6:54 pm

2 stops21h 39m

Ontario

Wed 10/15

12:51 pm-5:30 pm

2 stops19h 39m

$623

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Wed 7/23

6:15 am-6:53 pm

2 stops21h 38m

Ontario

Mon 8/4

2:37 pm-5:30 pm

2 stops17h 53m

$980

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Sun 9/14

12:40 pm-11:59 pm

2 stops20h 19m

$978

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Wed 9/10

11:00 am-10:33 pm

2 stops20h 33m

$988

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Wed 8/6

6:40 am-10:06 pm

3 stops24h 26m

$1,854

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Wed 7/30

6:05 am-9:37 pm

2 stops24h 32m

$1,906

MarseilleOntario

MRS - ONT

MRSONT

Marseille

Mon 9/29

10:55 am-10:33 pm

2 stops20h 38m

$5,898

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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.

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 July 3, 2025.
Read reviews from past customers who have flown United Airlines, American Airlines, and Iberia from Marseille to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,861 reviews

Boarding

7.7

Entertainment

7.0

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

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
8,861 reviews
United Airlines
7.4
Good
8,861 reviews

Boarding

7.7

Entertainment

7.0

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

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
8,861 reviews

Boarding

7.7

Entertainment

7.0

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

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
2,820 reviews
United Airlines
7.4
Good
8,861 reviews

Boarding

7.7

Entertainment

7.0

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

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.
Lufthansa
6.8
Okay
7,207 reviews
United Airlines
7.4
Good
8,861 reviews

Boarding

7.7

Entertainment

7.0

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

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
7,093 reviews
United Airlines
7.4
Good
8,861 reviews

Boarding

7.7

Entertainment

7.0

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

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 Iberia ($978), American Airlines ($988), and United Airlines ($1,854).

  • 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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