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

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

How long does it take to fly to Oslo Gardermoen Airport?

Average flight duration from State of Washington to Oslo Gardermoen Airport depends on which airport you fly into and out of. Flying from Seattle to Oslo Gardermoen Airport is 11h 25m on average, while flying from Spokane to Oslo Gardermoen Airport is 17h 02m on average. Oslo Gardermoen Airport is the most popular airport in Oslo Gardermoen Airport.

What airlines fly to Oslo Gardermoen Airport?

Icelandair, Scandinavian Airlines and Delta are the top three most popular airlines that fly to Oslo Gardermoen Airport from State of Washington according to our data. Icelandair is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Oslo Gardermoen Airport. Keep in mind that there are 10 different airlines that fly to Oslo Gardermoen Airport on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Washington to Oslo Gardermoen Airport are updated daily.

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

There are 10 operators available for flights from Washington to Oslo Gardermoen Airport as of December 2025.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Oslo Gardermoen Airport.

What documentation or ID do you need to fly to Oslo Gardermoen Airport?

The travel and health documents you'll need for your trip to Oslo Gardermoen Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Oslo Gardermoen Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$296 Cheap Flights from State of Washington to Oslo Gardermoen Airport in 2025/26

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Cheap round-trip flights

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2:35 pm - 11:35 am

SEA

OSL

12h 00m1 stop

1:05 pm - 5:00 pm

OSL

SEA

12h 55m1 stop

$390Icelandair

Mon, Jan 12 - Sun, Jan 25

7:00 pm - 3:25 pm

SEA

OSL

11h 25m1 stop

1:50 pm - 8:45 pm

OSL

SEA

15h 55m1 stop

$391Icelandair

Mon, Apr 13 - Sun, Apr 26

2:35 pm - 11:35 am

SEA

OSL

12h 00m1 stop

1:10 pm - 5:00 pm

OSL

SEA

12h 50m1 stop

$392Icelandair

Fri, Jan 23 - Tue, Jan 27

2:35 pm - 11:35 am

SEA

OSL

12h 00m1 stop

9:30 pm - 6:00 pm

OSL

SEA

28h 30m1 stop

$393Icelandair

Sun, Mar 1 - Sun, Mar 15

5:45 pm - 10:40 pm

PDX

OSL

19h 55m1 stop

7:10 am - 3:55 pm

OSL

PDX

17h 45m1 stop

$439British Airways

Wed, Feb 18 - Fri, Feb 27

5:45 pm - 10:55 am

PDX

OSL

32h 10m1 stop

7:10 am - 3:55 pm

OSL

PDX

17h 45m1 stop

$452British Airways

Wed, Feb 18 - Fri, Feb 27

5:45 pm - 7:30 am

PDX

OSL

28h 45m2 stops

6:25 am - 9:45 pm

OSL

PDX

24h 20m2 stops

$468Multiple Airlines

Wed, Feb 18 - Fri, Feb 27

8:30 am - 5:40 pm

PDX

OSL

24h 10m2 stops

1:50 pm - 12:39 am

OSL

PDX

19h 49m2 stops

$484Lufthansa

Mon, Jan 12 - Sun, Jan 25

6:00 am - 11:55 pm

GEG

OSL

32h 55m2 stops

8:50 pm - 6:49 pm

OSL

GEG

30h 59m2 stops

$501Multiple Airlines

Fri, Jan 23 - Tue, Jan 27

1:15 pm - 6:50 pm

GEG

OSL

20h 35m2 stops

6:25 am - 7:54 pm

OSL

GEG

22h 29m2 stops

$511Delta

Fri, Jan 23 - Tue, Jan 27

Scandinavian Airlines flights from State of Washington to Oslo Gardermoen Airport

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

Scandinavian Airlines

May 10

SEA7:20 amSeattle/Tacoma Intl

16h 55m

2 stops

OSL9:15 amOslo Gardermoen

May 29

OSL8:00 amOslo Gardermoen

14h 45m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$432

Find similar

Scandinavian Airlines

Mar 4

SEA7:10 amSeattle/Tacoma Intl

21h 00m

2 stops

OSL1:10 pmOslo Gardermoen

Mar 14

OSL9:05 pmOslo Gardermoen

34h 18m

2 stops

SEA11:23 pmSeattle/Tacoma Intl

$495

Find similar

Scandinavian Airlines

Apr 15

PDX1:00 pmPortland

19h 20m

2 stops

OSL5:20 pmOslo Gardermoen

Apr 30

OSL9:55 amOslo Gardermoen

21h 27m

2 stops

PDX10:22 pmPortland

$502

Find similar

British Airways flights from State of Washington to Oslo Gardermoen Airport

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

British Airways

Feb 18

PDX5:45 pmPortland

19h 55m

1 stop

OSL10:40 pmOslo Gardermoen

Feb 27

OSL7:10 amOslo Gardermoen

17h 45m

1 stop

PDX3:55 pmPortland

$439

Find similar

British Airways

Feb 18

PDX5:45 pmPortland

32h 10m

1 stop

OSL10:55 amOslo Gardermoen

Feb 27

OSL7:10 amOslo Gardermoen

17h 45m

1 stop

PDX3:55 pmPortland

$452

Find similar

British Airways

Mar 4

SEA6:50 pmSeattle/Tacoma Intl

18h 50m

1 stop

OSL10:40 pmOslo Gardermoen

Mar 12

OSL3:05 pmOslo Gardermoen

29h 25m

1 stop

SEA12:30 pmSeattle/Tacoma Intl

$457

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 1/12

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sun 1/25

1:05 pm-5:00 pm

1 stop12h 55m

$390

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 4/13

7:00 pm-3:25 pm

1 stop11h 25m

Oslo Gardermoen

Sun 4/26

1:50 pm-8:45 pm

1 stop15h 55m

$391

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 1/23

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Tue 1/27

1:10 pm-5:00 pm

1 stop12h 50m

$392

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 3/1

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sun 3/15

9:30 pm-6:00 pm

1 stop28h 30m

$393

PortlandOslo

PDX - OSL

PDXOSL

Portland

Wed 2/18

5:45 pm-10:40 pm

1 stop19h 55m

Oslo Gardermoen

Fri 2/27

7:10 am-3:55 pm

1 stop17h 45m

$439

PortlandOslo

PDX - OSL

PDXOSL

Portland

Wed 2/18

5:45 pm-10:55 am

1 stop32h 10m

Oslo Gardermoen

Fri 2/27

7:10 am-3:55 pm

1 stop17h 45m

$452

PortlandOslo

PDX - OSL

PDXOSL

Portland

Wed 2/18

5:45 pm-7:30 am

2 stops28h 45m

Oslo Gardermoen

Fri 2/27

6:25 am-9:45 pm

2 stops24h 20m

$468

PortlandOslo

PDX - OSL

PDXOSL

Portland

Mon 1/12

8:30 am-5:40 pm

2 stops24h 10m

Oslo Gardermoen

Sun 1/25

1:50 pm-12:39 am

2 stops19h 49m

$484

SpokaneOslo

GEG - OSL

GEGOSL

Spokane

Fri 1/23

6:00 am-11:55 pm

2 stops32h 55m

Oslo Gardermoen

Tue 1/27

8:50 pm-6:49 pm

2 stops30h 59m

$501

SpokaneOslo

GEG - OSL

GEGOSL

Spokane

Fri 1/23

1:15 pm-6:50 pm

2 stops20h 35m

Oslo Gardermoen

Tue 1/27

6:25 am-7:54 pm

2 stops22h 29m

$511

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 State of Washington to Oslo Gardermoen Airport

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

Other information

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

The cheapest month to fly to Oslo Gardermoen Airport from State of Washington is in January. Flight prices, which tend to average around $434, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Oslo Gardermoen Airport from State of Washington during November instead. Flights to Oslo Gardermoen Airport in November, while not as cheap as those in January, still average around $483.

What is the cheapest day to depart on your flight to Oslo Gardermoen Airport?

According to our data, Tuesday is the cheapest day to fly to Oslo Gardermoen Airport from State of Washington. The lowest ticket price found for a Tuesday departure recently was $772. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from State of Washington to Oslo Gardermoen Airport for around $896.

What is the cheapest time of day to depart on your flight to Oslo Gardermoen Airport?

Our most recent data shows that the best time of day to fly to Oslo Gardermoen Airport is in the evening. Flights from State of Washington to Oslo Gardermoen Airport during this time can be as low as $696. In contrast, the most expensive time of day to depart to Oslo Gardermoen Airport is in the afternoon when prices are around $959.

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

You are more likely to see cheaper flights to Oslo Gardermoen Airport from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Oslo Gardermoen Airport for around $592 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Oslo Gardermoen Airport from State of Washington for as low as $531 on momondo.

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

You could potentially save up to 30% on your flight if you consider stops on a State of Washington to Oslo Gardermoen Airport flight.

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

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

Fastest flight time	11h 25m
Direct flights	None

The fastest flight from State of Washington to Oslo Gardermoen Airport takes 11h 25m

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

Search flight deals

When did momondo last update prices for flights from Washington to Oslo Gardermoen Airport?
Prices for flights from Washington to Oslo Gardermoen Airport are updated daily.
How many operators does momondo search for flights from Washington to Oslo Gardermoen Airport?
There are 10 operators available for flights from Washington to Oslo Gardermoen Airport as of December 2025.
How old do you have to be to fly from Washington to Oslo Gardermoen Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Oslo Gardermoen Airport.
What documentation or ID do you need to fly to Oslo Gardermoen Airport?
The travel and health documents you'll need for your trip to Oslo Gardermoen Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Oslo Gardermoen Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Oslo Gardermoen Airport

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

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $354	Free Cancellation	Rating 6.7 7,559 reviews	Search British Airways flights
Icelandair	PriceFrom $403	Free Cancellation	Rating 7.0 584 reviews	Search Icelandair flights
Delta	PriceFrom $478	Free Cancellation	Rating 7.9 8,011 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $483	Free Cancellation	Rating 7.4 1,591 reviews	Search Scandinavian Airlines flights
Finnair	PriceFrom $484	Free Cancellation	Rating 7.6 1,334 reviews	Search Finnair flights
United Airlines	PriceFrom $517	Free Cancellation	Rating 7.4 9,063 reviews	Search United Airlines flights
KLM	PriceFrom $524	Free Cancellation	Rating 7.7 1,428 reviews	Search KLM flights
Lufthansa	PriceFrom $551	Free Cancellation	Rating 6.8 7,612 reviews	Search Lufthansa flights
Air France	PriceFrom $552	Free Cancellation	Rating 7.4 1,500 reviews	Search Air France flights
American Airlines	PriceFrom $564	Free Cancellation	Rating 7.2 11,045 reviews	Search American Airlines flights

Gardermoen

Fredrikstad

Drammen

Lillehammer

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

It is quick and easy to find Washington to Oslo 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 Oslo that suits you.

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

momondo does allow users to show only those flights to Oslo from Washington which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Washington to Oslo flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Oslo, momondo offers a useful price alert feature which will track prices for flights to Oslo from Washington and alert you when they change.

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Cheap flights from Washington to Oslo from $296

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Oslo departing on 1/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Scandinavian Airlines flights from State of Washington to Oslo Gardermoen Airport

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

British Airways flights from State of Washington to Oslo Gardermoen Airport

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

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

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

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

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

What is the cheapest day to depart on your flight to Oslo Gardermoen Airport?

What is the cheapest time of day to depart on your flight to Oslo Gardermoen Airport?

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

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

You could potentially save up to 30% on your flight if you consider stops on a State of Washington to Oslo Gardermoen Airport flight.

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

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

What airlines fly to Oslo Gardermoen Airport?

How long does it take to fly to Oslo Gardermoen Airport?

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

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

Fastest flight time

Direct flights

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

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

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

What documentation or ID do you need to fly to Oslo Gardermoen Airport?

Best airlines flying from State of Washington to Oslo Gardermoen Airport

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

Traveling to a place near Oslo?

Why use momondo?

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

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

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

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

An easier way to manage your Oslo Gardermoen Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Oslo

Popular cities in Norway

Popular flights according to clicks in the last 7 days on momondo