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

Delta, Scandinavian Airlines, and American Airlines are the most popular carriers operating from Washington to Oslo Gardermoen

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 60% of people opting to fly with this airline when traveling to Oslo Gardermoen Airport. Keep in mind that there are 8 different airlines that fly to Oslo Gardermoen Airport on a routine basis, so you have a few additional options to choose from.

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 15h 15m on average. Oslo Gardermoen Airport is the most popular airport in Oslo Gardermoen Airport.

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 8 operators available for flights from Washington to Oslo Gardermoen Airport as of March 2026.

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.

$169 Cheap Flights from State of Washington to Oslo Gardermoen Airport in 2026

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Washington to Oslo

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:40 pm - 12:35 pm

SEA

OSL

11h 55m

1 stop

1:50 pm - 5:55 pm

OSL

SEA

13h 05m

1 stop

$362Icelandair

Mon, Apr 13 - Mon, Apr 27

3:30 pm - 12:35 pm

PDX

OSL

12h 05m

1 stop

4:30 pm - 6:00 pm

OSL

PDX

34h 30m

1 stop

$364Icelandair

Mon, Apr 27 - Tue, May 12

3:40 pm - 12:35 pm

SEA

OSL

11h 55m

1 stop

1:50 pm - 5:55 pm

OSL

SEA

13h 05m

1 stop

$365Icelandair

Mon, Apr 13 - Mon, Apr 27

3:30 pm - 12:35 pm

PDX

OSL

12h 05m

1 stop

4:30 pm - 6:00 pm

OSL

PDX

34h 30m

1 stop

$368Icelandair

Mon, Apr 27 - Sun, May 10

3:30 pm - 12:35 pm

PDX

OSL

12h 05m

1 stop

1:50 pm - 6:00 pm

OSL

PDX

13h 10m

1 stop

$396Icelandair

Tue, Apr 14 - Sun, Apr 19

1:22 pm - 10:20 pm

GEG

OSL

23h 58m

2 stops

7:50 am - 8:33 pm

OSL

GEG

21h 43m

2 stops

$774Multiple Airlines

Fri, May 1 - Fri, May 8

1:46 pm - 3:25 pm

GEG

OSL

40h 39m

2 stops

11:45 am - 3:15 pm

OSL

GEG

36h 30m

2 stops

$796United Airlines

Sun, Apr 12 - Sun, Apr 19

3:15 pm - 11:40 pm

GEG

OSL

23h 25m

2 stops

8:35 am - 8:33 pm

OSL

GEG

20h 58m

2 stops

$824Multiple Airlines

Sun, Apr 12 - Sun, Apr 19

1:41 pm - 2:50 pm

GEG

OSL

40h 09m

2 stops

11:45 am - 12:37 pm

OSL

GEG

57h 52m

2 stops

$1,086United Airlines

Fri, Jul 17 - Sun, Jul 26

1:41 pm - 10:05 pm

GEG

OSL

47h 24m

2 stops

6:45 pm - 9:05 pm

OSL

GEG

35h 20m

2 stops

$1,193Lufthansa

Fri, Jul 17 - Sat, Jul 25

Icelandair flights from State of Washington to Oslo Gardermoen Airport

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

Icelandair

Apr 13

SEA3:40 pmSeattle/Tacoma Intl

11h 55m

1 stop

OSL12:35 pmOslo Gardermoen

Apr 27

OSL1:50 pmOslo Gardermoen

13h 05m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$362

Icelandair

Apr 27

PDX3:30 pmPortland

12h 05m

1 stop

OSL12:35 pmOslo Gardermoen

May 12

OSL4:30 pmOslo Gardermoen

34h 30m

1 stop

PDX6:00 pmPortland

$364

Icelandair

Apr 13

SEA3:40 pmSeattle/Tacoma Intl

11h 55m

1 stop

OSL12:35 pmOslo Gardermoen

Apr 27

OSL1:50 pmOslo Gardermoen

13h 05m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$365

KLM flights from State of Washington to Oslo Gardermoen Airport

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

KLM

Apr 27

PDX1:05 pmPortland

14h 25m

1 stop

OSL12:30 pmOslo Gardermoen

May 10

OSL7:15 pmOslo Gardermoen

24h 55m

1 stop

PDX11:10 amPortland

$469

KLM

Apr 30

PDX1:05 pmPortland

22h 50m

1 stop

OSL8:55 pmOslo Gardermoen

May 7

OSL6:30 amOslo Gardermoen

17h 18m

2 stops

PDX2:48 pmPortland

$483

KLM

Apr 20

PDX3:35 pmPortland

15h 45m

2 stops

OSL4:20 pmOslo Gardermoen

Apr 27

OSL11:50 amOslo Gardermoen

16h 02m

2 stops

PDX6:52 pmPortland

$487

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

Cheapest round-trip

Quickest round-trip

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 4/13

3:40 pm-12:35 pm

1 stop11h 55m

Oslo Gardermoen

Mon 4/27

1:50 pm-5:55 pm

1 stop13h 05m

$362

PortlandOslo

PDX - OSL

PDXOSL

Portland

Mon 4/27

3:30 pm-12:35 pm

1 stop12h 05m

Oslo Gardermoen

Tue 5/12

4:30 pm-6:00 pm

1 stop34h 30m

$364

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 4/13

3:40 pm-12:35 pm

1 stop11h 55m

Oslo Gardermoen

Mon 4/27

1:50 pm-5:55 pm

1 stop13h 05m

$365

PortlandOslo

PDX - OSL

PDXOSL

Portland

Mon 4/27

3:30 pm-12:35 pm

1 stop12h 05m

Oslo Gardermoen

Sun 5/10

4:30 pm-6:00 pm

1 stop34h 30m

$368

PortlandOslo

PDX - OSL

PDXOSL

Portland

Tue 4/14

3:30 pm-12:35 pm

1 stop12h 05m

Oslo Gardermoen

Sun 4/19

1:50 pm-6:00 pm

1 stop13h 10m

$396

SpokaneOslo

GEG - OSL

GEGOSL

Spokane

Fri 5/1

1:22 pm-10:20 pm

2 stops23h 58m

Oslo Gardermoen

Fri 5/8

7:50 am-8:33 pm

2 stops21h 43m

$774

SpokaneOslo

GEG - OSL

GEGOSL

Spokane

Sun 4/12

1:46 pm-3:25 pm

2 stops40h 39m

Oslo Gardermoen

Sun 4/19

11:45 am-3:15 pm

2 stops36h 30m

$796

SpokaneOslo

GEG - OSL

GEGOSL

Spokane

Sun 4/12

3:15 pm-11:40 pm

2 stops23h 25m

Oslo Gardermoen

Sun 4/19

8:35 am-8:33 pm

2 stops20h 58m

$824

SpokaneOslo

GEG - OSL

GEGOSL

Spokane

Fri 7/17

1:41 pm-2:50 pm

2 stops40h 09m

Oslo Gardermoen

Sun 7/26

11:45 am-12:37 pm

2 stops57h 52m

$1,086

SpokaneOslo

GEG - OSL

GEGOSL

Spokane

Fri 7/17

1:41 pm-10:05 pm

2 stops47h 24m

Oslo Gardermoen

Sat 7/25

6:45 pm-9:05 pm

2 stops35h 20m

$1,193

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 $421, 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 $481.

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 $555 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 $496 on momondo.

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

You could potentially save up to 71% 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 8 operators available for flights from Washington to Oslo Gardermoen Airport as of March 2026.
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 $353	Free Cancellation	Rating 6.7 7,799 reviews	Search British Airways flights
Icelandair	PriceFrom $390	Free Cancellation	Rating 7.1 622 reviews	Search Icelandair flights
Delta	PriceFrom $468	Free Cancellation	Rating 7.9 8,287 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $476	Free Cancellation	Rating 7.3 1,719 reviews	Search Scandinavian Airlines flights
Finnair	PriceFrom $491	Free Cancellation	Rating 7.6 1,373 reviews	Search Finnair flights
KLM	PriceFrom $506	Free Cancellation	Rating 7.8 1,471 reviews	Search KLM flights
United Airlines	PriceFrom $515	Free Cancellation	Rating 7.4 9,435 reviews	Search United Airlines flights
Lufthansa	PriceFrom $520	Free Cancellation	Rating 6.8 7,858 reviews	Search Lufthansa flights

Gardermoen

Fredrikstad

Lillehammer

Drammen

Why use momondo?

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.

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Fri 4/17

Fri 4/24

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Oslo

Popular cities

Other flights from Washington

Other flights to Oslo

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in Norway

Flights to Oslo Sandefjord Airportfrom $505

Cheap flights from Washington to Oslo from $169

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 4/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Washington to Oslo

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Icelandair flights from State of Washington to Oslo Gardermoen Airport

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

KLM flights from State of Washington to Oslo Gardermoen Airport

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

momondo Fare Finder

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

See travel insights to Oslo from

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

What is the cheapest month to fly 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?

What is the cheapest airline that flies 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

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?

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

State of Washington flight routes

According to popular flight searches on momondo this year

Oslo Gardermoen Airport flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Oslo

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Oslo

List of cabin classes available on flights landing in Oslo. Availability may vary depending on flight origin and airline.

Complete your trip to Oslo

Explore popular destinations other users love

According to popular flight searches on momondo this year