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Oslo Gardermoen

$382+ Cheap flights from Ontario (ONT) to Oslo Gardermoen (OSL)

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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OSL
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap flight deals from Ontario to Oslo Gardermoen

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Oslo Gardermoen (OSL). 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 29, 2025.

Round-trip from

$561
(United Airlines)

One-way from

$382
(Trip.com)

Popular in

June

Cheapest in

March

Average price

$813
From Ontario to Oslo Gardermoen
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One-way flight from Ontario to Oslo Gardermoen
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Highest demand for flights based on searches. 18% potential increase in price ($152 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 July 2025
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Find flight deals from Ontario to Oslo Gardermoen

Cheapest flights from Ontario to Oslo Gardermoen
Explore the most affordable flight options available from Ontario to Oslo Gardermoen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This United Airlines deal was found by Cheapflights users on 7/29. 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 11/261:29 pmONT - OSL
2 stops16h 51mUnited Airlines
Wed 12/106:05 amOSL - ONT
2 stops20h 32mUnited Airlines
Deal found 7/29$561
This Expedia deal was found by Cheapflights users on 7/28. 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.
Wed 10/2912:47 pmONT - OSL
2 stops17h 23mBritish Airways
Wed 11/128:45 amOSL - ONT
2 stops18h 36mBritish Airways
Deal found 7/28$573
This Iberia deal was found by Cheapflights users on 7/27. 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.
Tue 10/2810:57 amONT - OSL
2 stops19h 13mMultiple Airlines
Tue 11/1111:45 amOSL - ONT
2 stops19h 44mMultiple Airlines
Deal found 7/27$780

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Oslo Gardermoen 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 29, 2025.
Use the filters below to find and compare flights from Ontario to Oslo Gardermoen Airport that are best for you.

Fly from

Ontario

Fly to

Oslo Gardermoen

Route

Depart

Return

Price

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Wed 11/26

1:29 pm-3:20 pm

2 stops16h 51m

Oslo Gardermoen

Wed 12/10

6:05 am-5:37 pm

2 stops20h 32m

$561

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Wed 10/29

12:47 pm-2:10 pm

2 stops17h 23m

Oslo Gardermoen

Wed 11/12

8:45 am-6:21 pm

2 stops18h 36m

$573

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Tue 11/25

2:59 pm-2:10 pm

2 stops38h 11m

Oslo Gardermoen

Tue 12/9

11:45 am-9:58 pm

2 stops19h 13m

$755

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Mon 8/25

12:59 am-12:35 pm

2 stops26h 36m

$382

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Tue 8/26

7:00 am-10:10 pm

2 stops30h 10m

$421

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Thu 8/28

8:14 am-10:50 am

2 stops17h 36m

$509

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Sat 9/6

10:53 am-4:25 pm

2 stops20h 32m

$5,713

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Ontario to Oslo Gardermoen

Have a flexible travel schedule? Discover the best time to fly to Oslo Gardermoen 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 Oslo Gardermoen Airport

What is the cheapest month to book a flight from Ontario to Oslo Gardermoen Airport?

Currently, November is the cheapest month in which you can book a flight from Ontario to Oslo Gardermoen Airport (average of $567). Flying from Ontario to Oslo Gardermoen Airport in June is currently the most expensive (average of $1,010). 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 OSL?

Find hourly flight availability from Ontario to Oslo Gardermoen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

It’s typically best to fly out from Ontario to Oslo Gardermoen Airport in the morning. Doing so could potentially save you 41% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Oslo Gardermoen

Get insights into the airlines that provide service to Oslo Gardermoen. 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 Oslo Gardermoen. Reviews last updated July 29, 2025.
Get a feel of what it's like to fly with United Airlines, American Airlines, and British Airways from Ontario to Oslo Gardermoen Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,899 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,899 reviews
United Airlines
7.4
Good
8,899 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,899 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
British Airways
6.6
Okay
7,208 reviews
United Airlines
7.4
Good
8,899 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Ontario to Oslo Gardermoen. 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 Oslo Gardermoen?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Oslo Gardermoen. 0 airlines have flights from Ontario to Oslo Gardermoen on a regular basis. Booking flights from Ontario to Oslo Gardermoen should not be difficult; the airport handles an average of 0 outbound flights to Oslo Gardermoen per day.

  • What are the cheapest airlines flying from Ontario to Oslo Gardermoen Airport round-trip?

    Cheapflights users have booked flights from Ontario to Oslo Gardermoen Airport round-trip from $561. Another airline that can offer you cheap pricing is British Airways.

  • What are the cheapest airlines to fly from Ontario to Oslo Gardermoen Airport one-way?

    One-way options have recently been found by users for as low as $421 on United Airlines. Other airlines that offer cheap prices include British Airways from $509 and American Airlines from $5,713 one-way.

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

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

  • How can I find direct flights from Ontario to Oslo Gardermoen?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Oslo Gardermoen 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 Oslo Gardermoen Airport?

    Currently, November is the cheapest month in which you can book a flight from Ontario to Oslo Gardermoen Airport (average of $567). Flying from Ontario to Oslo Gardermoen Airport in June is currently the most expensive (average of $1,010). 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

Traveling to a place near Oslo Gardermoen Airport?

Book flights to Oslo Gardermoen Airport if you plan to visit one of these locations
Gardermoen

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