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Find cheap flights from Ontario to Oslo from $509

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Oslo Gardermoen departing on 8/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 5/18
Sat 5/25

Search hundreds of travel sites at once for deals on flights to Oslo

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Oslo, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Oslo, as well as popular online travel agencies
In the last 7 days travelers have searched 44,553,814 times on KAYAK, and here is why:

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Cheap flight deals from Ontario to Oslo Gardermoen (ONT-OSL)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Oslo Gardermoen that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
2:53 pm - 11:25 pmONT-OSL
23h 32m2 stops
7:40 am - 8:08 pmOSL-ONT
21h 28m2 stops
$586
Find Deal
Tue, Apr 30 - Tue, May 7
12:53 pm - 11:25 pmONT-OSL
25h 32m2 stops
7:40 am - 10:29 pmOSL-ONT
23h 49m3 stops
$589American Airlines
Find Deal
Tue, Apr 30 - Tue, May 7
7:18 am - 2:45 pmONT-OSL
22h 27m2 stops
6:05 am - 10:05 pmOSL-ONT
24h 00m2 stops
$609United Airlines
Find Deal
Tue, Oct 15 - Tue, Oct 29
2:52 pm - 11:25 pmONT-OSL
23h 33m2 stops
9:00 pm - 5:33 pmOSL-ONT
29h 33m2 stops
$646British Airways
Find Deal
Mon, Aug 19 - Mon, Sep 2
4:45 pm - 10:35 amONT-OSL
32h 50m2 stops
5:05 pm - 11:26 pmOSL-ONT
39h 21m2 stops
$673British Airways
Find Deal
Mon, Aug 12 - Mon, Aug 19
8:41 am - 10:35 amONT-OSL
16h 54m2 stops
9:00 pm - 11:26 pmOSL-ONT
35h 26m2 stops
$696British Airways
Find Deal
Sun, Sep 15 - Sun, Sep 29
12:40 pm - 10:35 amONT-OSL
36h 55m2 stops
7:45 am - 9:42 pmOSL-ONT
22h 57m2 stops
$792American Airlines
Find Deal
Mon, Aug 12 - Mon, Aug 19
8:41 am - 11:30 pmONT-OSL
29h 49m2 stops
7:35 am - 9:42 pmOSL-ONT
23h 07m2 stops
$965Iberia
Find Deal
Wed, Sep 18 - Wed, Oct 2
2:50 pm - 11:25 pmONT-OSL
23h 35m2 stops
7:45 am - 8:08 pmOSL-ONT
21h 23m2 stops
$1,052Iberia
Find Deal
Mon, May 6 - Mon, May 13
10:42 am - 2:45 pmONT-OSL
19h 03m2 stops
9:50 am - 9:14 pmOSL-ONT
20h 24m2 stops
$1,061United Airlines
Find Deal
Mon, May 20 - Mon, May 27

Flights from Ontario to Oslo Gardermoen - Travel Insights & Trends

Get data-powered insights and trends into flights from Ontario to Oslo Gardermoen to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Ontario to Oslo Gardermoen Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ontario to Oslo Gardermoen Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Ontario to Oslo Gardermoen Airport is April, where tickets cost $502 on average. On the other hand, the most expensive months are June and December, where the average cost of tickets is $1,017 and $945 respectively.

How far in advance should I book a flight from Ontario to Oslo Gardermoen Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Oslo Gardermoen Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Ontario to Oslo Gardermoen Airport, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 88 days before departure.

Which airlines provide the cheapest flights from Ontario to Oslo?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Ontario to Oslo found on KAYAK was with American Airlines for $509. American Airlines proposed a round-trip connection from $589 and United Airlines from $609.

Good to know

Low season

April

High season

March

Cheapest flight

$509
Best time to beat the crowds with an average 46% drop in price.
Most popular time to fly and prices are also 24% lower on average.
Flight from Ontario to Oslo

When to book flights from Ontario to Oslo Gardermoen

Are your dates flexible? Find out the best times to travel from Ontario to Oslo Gardermoen based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Ontario to Oslo flights

  • What is the cheapest flight from Ontario to Oslo Gardermoen Airport?

    In the last 3 days, the lowest price for a flight from Ontario to Oslo Gardermoen Airport was $509 for a one-way ticket and $586 for a round-trip.

  • Do I need a passport to fly between Ontario and Oslo?

    A passport is required to fly from Ontario to Oslo.

  • Which airports will I be using when flying from Ontario to Oslo?

    When flying out of Ontario you will be using Ontario. You will be landing at Oslo, also known as Oslo Gardermoen.

  • Which aircraft models fly most regularly from Ontario to Oslo?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Oslo?

    oneworld, and Star Alliance are the airline alliances operating flights between Ontario and Oslo, with oneworld being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Ontario to Oslo?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Oslo.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Oslo?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Oslo from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Oslo?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Oslo with an airline and back to Ontario with another airline. Booking your flights between Ontario and OSL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Oslo?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Oslo from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Ontario to Oslo Gardermoen

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Oslo. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Oslo Gardermoen? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 11104 reviews
7.5food
8.0entertainment
8.6crew
8.2boarding
7.9comfort
Airline reviews

I didn’t not like that I could not select my seat and ended up with the worse seat.

2.0 MediocreCarisa, Mar 2024LAX - HNL
Read more about Delta reviews

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Honestly, I didn’t expect that I will experience this long time wait during the check in. There was only one person who was taking care of the passengers for the economy class and it took us to wait about one hour to do our check i. As a result we barely get to the airplane as the gate was at the end of the airport. That is totally not professional where one crue is working at the registration desk with economy and 3-4 crues are helping for the business class.

Like most domestic flights in the US, you are basically on your own with this airline when it comes to food, so be sure to purchase meals and drinks ahead of time or expect to arrive starving and dehydrated (like I was).

You need to be a hacker to get the (Free) WiFi

I guess they don’t serve drinks on planes anymore

Book cheap flights from Ontario to Oslo

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Oslo found on KAYAK in the last 72 hours.
8/18Sun
2 stopsAmerican Airlines
16h 54mONT-OSL
$509
4/28Sun
2 stopsBritish Airways
20h 02mONT-OSL
$511
5/13Mon
2 stopsUnited Airlines
26h 23mONT-OSL
$513
8/24Sat
2 stopsFinnair
32h 50mONT-OSL
$515
8/22Thu
2 stopsAmerican Airlines
17h 09mONT-OSL
$518
6/11Tue
2 stopsIberia
25h 36mONT-OSL
$698
5/28Tue
2 stopsIberia
30h 54mONT-OSL
$710
8/21Wed
2 stops
33h 00mONT-OSL
$893
6/30Sun
2 stops
33h 05mONT-OSL
$1,060
8/31Sat
2 stopsUnited Airlines
17h 05mONT-OSL
$3,845

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Last minute flights from Ontario to Oslo Gardermoen

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ontario to Oslo that are departing in the next 10 days.
4/23Tue
multi-stopBritish Airways
20h 07mONT-OSL
5/7Tue
multi-stopBritish Airways
21h 28mOSL-ONT
$620

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Ontario - Oslo Flights

Departure:

Ontario (ONT)United States

Destination:

Oslo (OSL)Norway

Cabin classes:

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