HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Oslo Gardermoen

$390+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OSL
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Oslo Gardermoen with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 October 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$535
(United Airlines)

One-way from

$390
(British Airways)

Popular in

June

Cheapest in

March

Average price

$586
Provider with most accurate pricing for Ontario-Oslo Gardermoen flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Oslo Gardermoen flights.
Search Deals
From Ontario to Oslo Gardermoen
Search Deals
One-way flight from Ontario to Oslo Gardermoen
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($147 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 27, 2025.

This United Airlines deal was found by Cheapflights users on 10/26. 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 12/109:45 amOSL - ONT
2 stops19h 57mUnited Airlines
Deal found 10/26$535
This United Airlines deal was found by Cheapflights users on 10/26. 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 10/291:33 pmONT - OSL
2 stops19h 57mUnited Airlines
Fri 10/319:35 amOSL - ONT
2 stops21h 16mUnited Airlines
Deal found 10/26$544
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/27:00 amONT - OSL
2 stops21h 05mUnited Airlines
Sat 11/86:15 amOSL - ONT
2 stops25h 36mUnited Airlines
Deal found 10/27$732
This British Airways deal was found by Cheapflights users on 10/25. 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.
Sun 10/2612:48 pmONT - OSL
2 stops16h 57mBritish Airways
Sun 11/28:45 amOSL - ONT
2 stops18h 37mBritish Airways
Deal found 10/25$734
This Delta deal was found by Cheapflights users on 10/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:05 amONT - OSL
2 stops21h 45mDelta
Fri 1/99:25 amOSL - ONT
2 stops35h 29mDelta
Deal found 10/26$748
This American Airlines deal was found by Cheapflights users on 10/26. 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 10/306:10 amONT - OSL
2 stops24h 05mMultiple Airlines
Tue 11/1811:45 amOSL - ONT
2 stops19h 44mMultiple Airlines
Deal found 10/26$777
This American Airlines deal was found by Cheapflights users on 10/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:45 pmONT - OSL
2 stops37h 10mAmerican Airlines
Wed 7/111:35 amOSL - ONT
2 stops43h 10mAmerican Airlines
Deal found 10/27$786
This Iberia deal was found by Cheapflights users on 10/25. 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.
Wed 11/1910:47 amONT - OSL
2 stops18h 23mIberia
Mon 11/243:00 pmOSL - ONT
2 stops27h 57mIberia
Deal found 10/25$836
This American Airlines deal was found by Cheapflights users on 10/25. 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.
Mon 11/103:08 pmONT - OSL
2 stops18h 32mMultiple Airlines
Fri 11/1411:45 amOSL - ONT
2 stops19h 44mMultiple Airlines
Deal found 10/25$867
This American Airlines deal was found by Cheapflights users on 10/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/3011:59 pmONT - OSL
2 stops37h 41mMultiple Airlines
Tue 12/1611:45 amOSL - ONT
2 stops19h 43mMultiple Airlines
Deal found 10/27$874
This American Airlines deal was found by Cheapflights users on 10/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:47 amONT - OSL
2 stops21h 43mMultiple Airlines
Fri 12/1211:45 amOSL - ONT
2 stops19h 43mMultiple Airlines
Deal found 10/27$895

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 October 27, 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

9:45 am-8:42 pm

2 stops19h 57m

$535

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Sun 1/25

5:05 am-1:05 pm

2 stops23h 00m

Oslo Gardermoen

Sun 2/8

1:50 pm-10:53 pm

2 stops18h 03m

$545

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Thu 2/26

1:45 pm-3:40 pm

2 stops16h 55m

Oslo Gardermoen

Thu 3/12

6:15 am-8:45 pm

2 stops22h 30m

$552

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Sun 1/25

10:58 am-1:45 pm

2 stops17h 47m

Oslo Gardermoen

Fri 2/6

8:15 am-6:45 pm

2 stops19h 30m

$616

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Sat 1/24

10:58 am-2:10 pm

2 stops18h 12m

Oslo Gardermoen

Sat 2/7

12:00 pm-2:18 pm

2 stops35h 18m

$675

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Wed 2/25

5:03 pm-10:40 pm

2 stops20h 37m

Oslo Gardermoen

Wed 3/11

8:45 am-10:02 pm

2 stops21h 17m

$696

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Wed 3/25

5:02 pm-10:40 pm

2 stops21h 38m

Oslo Gardermoen

Wed 4/8

8:35 am-5:45 pm

2 stops18h 10m

$696

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Fri 3/27

5:05 pm-12:40 pm

2 stops35h 35m

Oslo Gardermoen

Tue 3/31

2:15 pm-11:52 pm

2 stops42h 37m

$703

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Sun 2/1

4:49 pm-10:40 pm

2 stops20h 51m

Oslo Gardermoen

Wed 2/11

6:55 am-6:45 pm

2 stops20h 50m

$709

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Fri 3/27

6:00 am-11:20 pm

2 stops33h 20m

Oslo Gardermoen

Tue 3/31

6:35 am-10:45 pm

2 stops25h 10m

$719

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 19 results
1
2

Compare providers for flights from Ontario to Oslo Gardermoen

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Oslo Gardermoen in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Oslo Gardermoen Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Oslo Gardermoen Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Oslo Gardermoen Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Oslo Gardermoen Airport flights, Cheapflights users trust eDreams the most. eDreams 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 Ontario-Oslo Gardermoen Airport 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 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 $456). Flying from Ontario to Oslo Gardermoen Airport in June is currently the most expensive (average of $673). 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 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.

  • How long is the flight from Ontario to Oslo Gardermoen Airport?

    Departing from Ontario to Oslo Gardermoen Airport will take you 16h 51m. The distance from Ontario to Oslo Gardermoen Airport is about 5302 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $456). Flying from Ontario to Oslo Gardermoen Airport in June is currently the most expensive (average of $673). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Oslo Gardermoen

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Oslo Gardermoen flights
San Francisco to Oslo Gardermoen flights
Los Angeles to Sandefjord flights
Santa Ana to Oslo Gardermoen flights
Burbank to Oslo Gardermoen flights
San Jose to Oslo Gardermoen flights
Oakland to Oslo Gardermoen flights
San Diego to Oslo Gardermoen flights
Las Vegas to Oslo Gardermoen flights
Sacramento to Oslo Gardermoen flights
Reno to Oslo Gardermoen flights
San Francisco to Sandefjord flights
Fresno to Oslo Gardermoen flights
Santa Barbara to Oslo Gardermoen flights
Long Beach to Oslo Gardermoen flights
Medford to Oslo Gardermoen flights
Monterey to Oslo Gardermoen flights
San Jose to Sandefjord flights
San Diego to Sandefjord flights
Sacramento to Sandefjord flights
Oakland to Sandefjord flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.