$426 Find Cheap Flights from Oslo Airport to Washington - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Oslo Gardermoen to Washington departing on 9/30. 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
1 adult, Economy, 0 bags

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Book Cheap Oslo Gardermoen to Washington Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Oslo Gardermoen to Washington 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Oslo Gardermoen to Washington

Thu, Dec 10 - Thu, Dec 24
Icelandair Logo
1:10 pm - 5:00 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
12h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 11:35 amSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
12h 00m1 stop Reykjavik Keflavik Intl
$499Icelandair
Thu, Sep 3 - Thu, Sep 10
Icelandair Logo
4:30 pm - 5:55 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
34h 25m1 stop Reykjavik Keflavik Intl
Icelandair Logo
11:25 pm - 12:35 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
28h 10m1 stop Reykjavik Keflavik Intl
$500Icelandair
Mon, Sep 7 - Tue, Sep 22
Icelandair Logo
4:30 pm - 11:45 amOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
28h 15m1 stop Reykjavik Keflavik Intl
Icelandair Logo
7:00 pm - 3:25 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
11h 25m1 stop Reykjavik Keflavik Intl
$501Icelandair
Mon, Aug 24 - Mon, Sep 7
Finnair Logo
12:50 pm - 4:00 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
12h 10m1 stop Helsinki-Vantaa
Finnair Logo
5:40 pm - 4:35 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
13h 55m1 stop Helsinki-Vantaa
$504Finnair
Mon, Aug 31 - Mon, Sep 14
Finnair Logo
8:35 am - 4:00 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
16h 25m1 stop Helsinki-Vantaa
Finnair Logo
5:40 pm - 7:45 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
17h 05m1 stop Helsinki-Vantaa
$507Finnair
Mon, Sep 7 - Tue, Sep 22
Finnair Logo
8:35 am - 4:00 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
16h 25m1 stop Helsinki-Vantaa
Finnair Logo
1:40 pm - 7:45 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
21h 05m2 stops Chicago O'Hare Intl Helsinki-Vantaa
$508Finnair
Fri, Sep 11 - Sun, Sep 20
Scandinavian Airlines Logo
6:10 pm - 1:45 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
28h 35m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
3:55 pm - 12:55 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
12h 00m1 stop Kastrup Copenhagen
$619Scandinavian Airlines
Sat, Sep 12 - Fri, Sep 25
Scandinavian Airlines Logo
8:00 am - 1:45 pmOSL  Oslo Gardermoen-SEA Seattle/Tacoma Intl
14h 45m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
3:55 pm - 12:55 pmSEA  Seattle/Tacoma Intl-OSL Oslo Gardermoen
12h 00m1 stop Kastrup Copenhagen
$627Scandinavian Airlines
Wed, Aug 26 - Mon, Aug 31
British Airways Logo
11:35 am - 5:40 pmOSL  Oslo Gardermoen-PDX Portland
15h 05m1 stop London Heathrow
British Airways Logo
12:24 pm - 10:40 amPDX  Portland-OSL Oslo Gardermoen
37h 16m2 stops Chicago O'Hare Intl London Heathrow
$864British Airways
Sat, Nov 7 - Wed, Nov 11
British Airways Logo
7:10 am - 7:47 pmOSL  Oslo Gardermoen-PDX Portland
21h 37m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
5:45 pm - 10:40 pmPDX  Portland-OSL Oslo Gardermoen
19h 55m1 stop London Heathrow
$980British Airways
Booking Insights

KAYAK's insights & trends for Oslo Gardermoen to Washington flights

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

How much is a round-trip flight from Oslo Gardermoen Airport to State of Washington?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Oslo Gardermoen Airport to State of Washington departing in December.

Flight prices are below average for this route right now.

Flights to State of Washington from Oslo Gardermoen Airport usually cost between $627 and $800 in December.
The lowest price found in the past 5 days was $499 on Icelandair (Dec 10-Dec 24).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Oslo Gardermoen Airport to Washington, 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 Oslo Gardermoen Airport to Washington is October, when tickets cost $537 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $815 and $805 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Oslo Gardermoen Airport to Washington, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Oslo Gardermoen Airport to Washington, you should book around 2 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Find deals

Good to know

Low season

November

Cheapest flight

$426
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Oslo Airport to Seattle

FAQs - booking Washington flights

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

    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 Oslo Airport to Washington.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Oslo Airport to Washington 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 Oslo Airport to Washington?

    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 from Oslo Airport to Washington with an airline and back with another airline.

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

    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 from Oslo Airport to Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Oslo Gardermoen to Washington

Information on your arrival and departure airports

Oslo Airport (OSL)