What is the cheapest airline that flies from Oslo Gardermoen to Washington?

British Airways, Finnair, and Icelandair are the most popular carriers operating from Oslo Gardermoen to Washington

When did momondo last update prices for flights from Oslo Gardermoen Airport to Washington?

Prices for flights from Oslo Gardermoen Airport to Washington were last updated today.

How many operators does momondo search for flights from Oslo Gardermoen Airport to Washington?

As of August 2026, there are 3 operators available to choose from for flights from Oslo Gardermoen Airport to Washington.

How old do you have to be to fly from Oslo Gardermoen Airport to Washington?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Oslo Gardermoen Airport to Washington.

What documentation or ID do you need to fly to Washington?

The necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$420 Cheap Flights from Oslo Gardermoen Airport to State of Washington in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Oslo Gardermoen Airport to Washington

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:30 pm - 8:40 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

13h 10m1 stop Reykjavik Keflavik Intl

7:00 pm - 3:25 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

11h 25m1 stop Reykjavik Keflavik Intl

$490Icelandair

Sat, Oct 3 - Fri, Oct 16

4:30 pm - 5:55 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

34h 25m1 stop Reykjavik Keflavik Intl

7:00 pm - 12:35 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

32h 35m1 stop Reykjavik Keflavik Intl

$492Icelandair

Mon, Oct 5 - Sun, Oct 18

4:30 pm - 8:40 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

13h 10m1 stop Reykjavik Keflavik Intl

7:00 pm - 3:25 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

11h 25m1 stop Reykjavik Keflavik Intl

$496Icelandair

Sat, Oct 3 - Fri, Oct 16

12:50 pm - 4:00 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

12h 10m1 stop Helsinki-Vantaa

5:40 pm - 4:35 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

13h 55m1 stop Helsinki-Vantaa

$504Finnair

Mon, Aug 24 - Mon, Sep 7

7:15 pm - 11:47 amOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

25h 32m1 stop Amsterdam Schiphol

1:30 pm - 4:40 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

18h 10m1 stop Paris Charles de Gaulle

$536Multiple Airlines

Mon, Sep 14 - Tue, Sep 22

8:35 am - 4:00 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

16h 25m1 stop Helsinki-Vantaa

5:40 pm - 4:35 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

13h 55m1 stop Helsinki-Vantaa

$549Finnair

Mon, Aug 24 - Mon, Sep 7

6:10 pm - 1:45 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

28h 35m1 stop Kastrup Copenhagen

3:55 pm - 12:55 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

12h 00m1 stop Kastrup Copenhagen

$619Scandinavian Airlines

Fri, Sep 11 - Sun, Sep 20

8:00 am - 1:45 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

14h 45m1 stop Kastrup Copenhagen

3:55 pm - 12:55 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

12h 00m1 stop Kastrup Copenhagen

$627Scandinavian Airlines

Sat, Sep 12 - Fri, Sep 25

7:10 am - 7:47 pmOSL Oslo Gardermoen-PDX Portland

21h 37m2 stops London Heathrow Chicago O'Hare Intl

5:45 pm - 10:40 pmPDX Portland-OSL Oslo Gardermoen

19h 55m1 stop London Heathrow

$980British Airways

Sat, Nov 7 - Wed, Nov 11

7:10 am - 7:47 pmOSL Oslo Gardermoen-PDX Portland

21h 37m2 stops London Heathrow Chicago O'Hare Intl

5:45 pm - 10:40 pmPDX Portland-OSL Oslo Gardermoen

19h 55m1 stop London Heathrow

$981British Airways

Sat, Nov 7 - Wed, Nov 11

Cheap last minute flights

Enter your travel dates to find the best prices.

1:50 pm - 5:55 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

13h 05m1 stop Reykjavik Keflavik Intl

7:00 pm - 3:25 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

11h 25m1 stop Reykjavik Keflavik Intl

$759Icelandair

Wed, Aug 12 - Tue, Aug 25

1:50 pm - 5:55 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

13h 05m1 stop Reykjavik Keflavik Intl

3:40 pm - 12:35 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

11h 55m1 stop Reykjavik Keflavik Intl

$817Icelandair

Wed, Aug 12 - Thu, Aug 20

5:35 am - 6:32 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

21h 57m2 stops Zurich Vancouver Intl

7:00 am - 1:15 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

21h 15m2 stops Chicago O'Hare Intl Zurich

$865SWISS

Wed, Aug 12 - Tue, Aug 25

5:35 am - 6:32 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

21h 57m2 stops Zurich Vancouver Intl

6:50 pm - 10:05 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

18h 15m1 stop Munich Franz Josef Strauss

$867Multiple Airlines

Wed, Aug 12 - Tue, Aug 25

9:55 am - 10:42 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

21h 47m2 stops Frankfurt am Main Vancouver Intl

2:10 pm - 12:20 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

13h 10m1 stop Frankfurt am Main

$898Lufthansa

Wed, Aug 12 - Thu, Aug 20

6:30 am - 11:10 amOSL Oslo Gardermoen-PDX Portland

13h 40m1 stop Amsterdam Schiphol

6:00 am - 8:45 amPDX Portland-OSL Oslo Gardermoen

17h 45m2 stops Minneapolis St Paul Amsterdam Schiphol

$899Delta

Wed, Aug 12 - Mon, Aug 31

9:55 am - 10:42 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

21h 47m2 stops Frankfurt am Main Vancouver Intl

8:10 am - 5:55 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

24h 45m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

$901Lufthansa

Wed, Aug 12 - Thu, Aug 20

9:20 am - 7:44 pmOSL Oslo Gardermoen-PDX Portland

19h 24m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

6:00 am - 8:45 amPDX Portland-OSL Oslo Gardermoen

17h 45m2 stops Minneapolis St Paul Amsterdam Schiphol

$904Delta

Wed, Aug 12 - Mon, Aug 31

4:30 pm - 5:55 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

34h 25m1 stop Reykjavik Keflavik Intl

11:25 pm - 12:35 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

28h 10m1 stop Reykjavik Keflavik Intl

$925Icelandair

Tue, Aug 11 - Tue, Aug 25

7:00 pm - 6:32 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

32h 32m2 stops Frankfurt am Main Vancouver Intl

7:00 am - 12:10 amSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

32h 10m2 stops Chicago O'Hare Intl Zurich

$972Multiple Airlines

Tue, Aug 11 - Tue, Aug 25

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Icelandair flights from Oslo Gardermoen Airport to State of Washington

Our best Icelandair deals on Oslo Gardermoen Airport to State of Washington flight tickets

Icelandair

Oct 3

OSL4:30 pmOslo Gardermoen

13h 10m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

Oct 16

SEA7:00 pmSeattle/Tacoma Intl

11h 25m

1 stop

OSL3:25 pmOslo Gardermoen

$490

Icelandair

Oct 5

OSL4:30 pmOslo Gardermoen

34h 25m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

Oct 18

SEA7:00 pmSeattle/Tacoma Intl

32h 35m

1 stop

OSL12:35 pmOslo Gardermoen

$492

Icelandair

Oct 3

OSL4:30 pmOslo Gardermoen

13h 10m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

Oct 16

SEA7:00 pmSeattle/Tacoma Intl

11h 25m

1 stop

OSL3:25 pmOslo Gardermoen

$496

Finnair flights from Oslo Gardermoen Airport to State of Washington

Our best Finnair deals on Oslo Gardermoen Airport to State of Washington flight tickets

Finnair

Aug 24

OSL12:50 pmOslo Gardermoen

12h 10m

1 stop

SEA4:00 pmSeattle/Tacoma Intl

Sep 7

SEA5:40 pmSeattle/Tacoma Intl

13h 55m

1 stop

OSL4:35 pmOslo Gardermoen

$504

Finnair

Aug 24

OSL8:35 amOslo Gardermoen

16h 25m

1 stop

SEA4:00 pmSeattle/Tacoma Intl

Sep 7

SEA5:40 pmSeattle/Tacoma Intl

13h 55m

1 stop

OSL4:35 pmOslo Gardermoen

$549

Finnair

Sep 23

OSL8:35 amOslo Gardermoen

20h 13m

2 stops

SEA7:48 pmSeattle/Tacoma Intl

Sep 30

SEA1:40 pmSeattle/Tacoma Intl

17h 55m

2 stops

OSL4:35 pmOslo Gardermoen

$568

momondo Fare Finder

Use the filters below to find and compare flights from Oslo Gardermoen Airport to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sat 10/3

4:30 pm-8:40 pm

1 stop13h 10m

Seattle/Tacoma Intl

Fri 10/16

7:00 pm-3:25 pm

1 stop11h 25m

$490

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 10/5

4:30 pm-5:55 pm

1 stop34h 25m

Seattle/Tacoma Intl

Sun 10/18

7:00 pm-12:35 pm

1 stop32h 35m

$492

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sat 10/3

4:30 pm-8:40 pm

1 stop13h 10m

Seattle/Tacoma Intl

Fri 10/16

7:00 pm-3:25 pm

1 stop11h 25m

$496

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 8/24

12:50 pm-4:00 pm

1 stop12h 10m

Seattle/Tacoma Intl

Mon 9/7

5:40 pm-4:35 pm

1 stop13h 55m

$504

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 9/14

7:15 pm-11:47 am

1 stop25h 32m

Seattle/Tacoma Intl

Tue 9/22

1:30 pm-4:40 pm

1 stop18h 10m

$536

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 8/24

8:35 am-4:00 pm

1 stop16h 25m

Seattle/Tacoma Intl

Mon 9/7

5:40 pm-4:35 pm

1 stop13h 55m

$549

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Fri 9/11

6:10 pm-1:45 pm

1 stop28h 35m

Seattle/Tacoma Intl

Sun 9/20

3:55 pm-12:55 pm

1 stop12h 00m

$619

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sat 9/12

8:00 am-1:45 pm

1 stop14h 45m

Seattle/Tacoma Intl

Fri 9/25

3:55 pm-12:55 pm

1 stop12h 00m

$627

OsloPortland

OSL Oslo Gardermoen - PDX Portland

OSLPDX

Oslo Gardermoen

Sat 11/7

7:10 am-7:47 pm

2 stops21h 37m

Portland

Wed 11/11

5:45 pm-10:40 pm

1 stop19h 55m

$980

OsloPortland

OSL Oslo Gardermoen - PDX Portland

OSLPDX

Oslo Gardermoen

Sat 11/7

7:10 am-7:47 pm

2 stops21h 37m

Portland

Wed 11/11

5:45 pm-10:40 pm

1 stop19h 55m

$981

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Oslo Gardermoen Airport to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to State of Washington?

The month of September is, on average, the cheapest month to fly to State of Washington from Oslo Gardermoen Airport, with most prices found around $549. If you aren’t able to travel to State of Washington during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $552.

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

You are more likely to see cheaper flights to State of Washington from Oslo Gardermoen Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $650 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Oslo Gardermoen Airport for as low as $595 on momondo.

Can stopping save me money on Oslo Gardermoen Airport to State of Washington flights?

You could potentially save up to 3% on your flight if you consider stops on a Oslo Gardermoen Airport to State of Washington flight.

Cheap Oslo Gardermoen Airport to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Oslo Gardermoen Airport to State of Washington

Fastest flight time	13h 05m
Direct flights	None

The fastest flight from Oslo Gardermoen Airport to State of Washington takes 13h 05m

There are no direct flights from Oslo Gardermoen Airport to State of Washington. There are no popular flight routes from Oslo Gardermoen Airport to State of Washington.

Search flight deals

Frequently asked questions about flying from Oslo Gardermoen Airport to Washington

When did momondo last update prices for flights from Oslo Gardermoen Airport to Washington?
Prices for flights from Oslo Gardermoen Airport to Washington were last updated today.
How many operators does momondo search for flights from Oslo Gardermoen Airport to Washington?
As of August 2026, there are 3 operators available to choose from for flights from Oslo Gardermoen Airport to Washington.
How old do you have to be to fly from Oslo Gardermoen Airport to Washington?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Oslo Gardermoen Airport to Washington.
What documentation or ID do you need to fly to Washington?
The necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Oslo Gardermoen Airport to State of Washington

Compare and see reviews for airlines that fly from Oslo Gardermoen Airport to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $443	Free Cancellation	Rating 6.9 728 reviews		Search Icelandair flights
Scandinavian Airlines	PriceFrom $588	Free Cancellation	Rating 7.4 1,936 reviews		Search Scandinavian Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Oslo to Washington?

It is quick and easy to find Oslo to Washington flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington that suits you.

Can I find flights from Oslo to Washington with flexible booking policies on momondo?

Yes. All flights to Washington from Oslo on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Oslo to Washington?

momondo helps you find the best flight between Oslo and Washington by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Oslo to Washington right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Washington from Oslo. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.