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

Icelandair, KLM, and Delta are the most popular carriers operating from Washington to Oslo

What airlines fly to Oslo?

Icelandair, Scandinavian Airlines and Delta are the top three most popular airlines that fly to Oslo from State of Washington according to our data. Icelandair is the first choice among our users, with 67% of people opting to fly with this airline when traveling to Oslo. Keep in mind that there are 7 different airlines that fly to Oslo on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Oslo?

Flight times vary depending on what airport in State of Washington you fly out of and what airport in Oslo you fly into. For example, flying from Seattle to Oslo Gardermoen Airport takes 11h 25m on average. On the other hand, flying from Spokane to Oslo Gardermoen Airport takes 17h 36m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

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

Prices for flights from Washington to Oslo are updated daily.

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

There are 7 operators available for flights from Washington to Oslo as of June 2026.

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

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.

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

The required travel and health documents for your Oslo trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Oslo. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$193 Cheap Flights from Washington to Oslo in 2026

Discover deals from 900+ travel sites with momondo.

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.

7:05 pm - 12:35 pm

PDX

OSL

32h 30m

1 stop

4:30 pm - 11:45 am

OSL

PDX

28h 15m

1 stop

$411Icelandair

Sun, Aug 16 - Mon, Aug 31

10:10 am - 12:20 pm

PDX

OSL

17h 10m

2 stops

11:50 am - 12:35 am

OSL

PDX

20h 45m

2 stops

$440Multiple Airlines

Thu, Oct 15 - Sat, Oct 31

2:45 pm - 11:35 am

PDX

OSL

11h 50m

1 stop

9:30 pm - 5:00 pm

OSL

PDX

28h 30m

1 stop

$446Icelandair

Tue, Nov 17 - Thu, Dec 3

6:50 pm - 6:00 pm

SEA

OSL

14h 10m

1 stop

6:55 am - 2:22 pm

OSL

SEA

16h 27m

2 stops

$511Lufthansa

Tue, Sep 15 - Tue, Sep 29

10:30 am - 3:45 pm

SEA

OSL

20h 15m

2 stops

6:25 pm - 2:00 pm

OSL

SEA

27h 35m

1 stop

$512Multiple Airlines

Tue, Oct 20 - Tue, Oct 27

10:58 pm - 5:15 pm

SEA

OSL

33h 17m

2 stops

6:45 am - 11:55 am

OSL

SEA

14h 10m

1 stop

$516United Airlines

Sun, Sep 6 - Mon, Sep 14

6:50 pm - 10:05 pm

SEA

OSL

18h 15m

1 stop

6:55 am - 2:22 pm

OSL

SEA

16h 27m

2 stops

$518United Airlines

Sun, Sep 20 - Tue, Sep 29

2:10 pm - 3:45 pm

SEA

OSL

16h 35m

1 stop

6:25 am - 11:55 am

OSL

SEA

14h 30m

1 stop

$519Lufthansa

Tue, Sep 8 - Sun, Sep 20

3:55 pm - 12:25 am

SEA

TRF

23h 30m

1 stop

6:00 am - 1:45 pm

TRF

SEA

16h 45m

1 stop

$548Scandinavian Airlines

Tue, Sep 15 - Tue, Sep 29

3:55 pm - 2:30 pm

SEA

TRF

13h 35m

1 stop

6:00 am - 1:45 pm

TRF

SEA

16h 45m

1 stop

$611Scandinavian Airlines

Sun, Sep 6 - Sat, Sep 12

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KLM flights from State of Washington to Oslo

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

KLM

Aug 2

SEA5:45 pmSeattle/Tacoma Intl

18h 10m

1 stop

OSL8:55 pmOslo Gardermoen

Aug 21

OSL8:00 amOslo Gardermoen

17h 27m

1 stop

SEA4:27 pmSeattle/Tacoma Intl

$576

KLM

Jun 25

SEA1:55 pmSeattle/Tacoma Intl

19h 40m

1 stop

OSL6:35 pmOslo Gardermoen

Jul 2

OSL11:00 amOslo Gardermoen

14h 20m

1 stop

SEA4:20 pmSeattle/Tacoma Intl

$649

KLM

Jul 1

PDX1:05 pmPortland

17h 20m

1 stop

OSL3:25 pmOslo Gardermoen

Jul 8

OSL9:20 amOslo Gardermoen

34h 50m

1 stop

PDX11:10 amPortland

$682

United Airlines flights from State of Washington to Oslo

Our best United Airlines deals on State of Washington to Oslo flight tickets

United Airlines

Aug 11

PDX9:00 amPortland

24h 00m

2 stops

OSL6:00 pmOslo Gardermoen

Aug 25

OSL6:55 amOslo Gardermoen

35h 36m

2 stops

PDX9:31 amPortland

$501

United Airlines

Aug 12

PDX4:07 pmPortland

20h 58m

2 stops

OSL10:05 pmOslo Gardermoen

Aug 19

OSL7:10 amOslo Gardermoen

24h 44m

2 stops

PDX10:54 pmPortland

$503

United Airlines

Sep 9

PDX8:40 amPortland

24h 15m

2 stops

OSL5:55 pmOslo Gardermoen

Sep 30

OSL6:35 amOslo Gardermoen

17h 11m

2 stops

PDX2:46 pmPortland

$512

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandOslo

PDX - OSL

PDXOSL

Portland

Sun 8/16

7:05 pm-12:35 pm

1 stop32h 30m

Oslo Gardermoen

Mon 8/31

4:30 pm-11:45 am

1 stop28h 15m

$411

PortlandOslo

PDX - OSL

PDXOSL

Portland

Thu 10/15

10:10 am-12:20 pm

2 stops17h 10m

Oslo Gardermoen

Sat 10/31

11:50 am-12:35 am

2 stops20h 45m

$440

PortlandOslo

PDX - OSL

PDXOSL

Portland

Tue 11/17

2:45 pm-11:35 am

1 stop11h 50m

Oslo Gardermoen

Thu 12/3

9:30 pm-5:00 pm

1 stop28h 30m

$446

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 9/15

6:50 pm-6:00 pm

1 stop14h 10m

Oslo Gardermoen

Tue 9/29

6:55 am-2:22 pm

2 stops16h 27m

$511

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 10/20

10:30 am-3:45 pm

2 stops20h 15m

Oslo Gardermoen

Tue 10/27

6:25 pm-2:00 pm

1 stop27h 35m

$512

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 9/6

10:58 pm-5:15 pm

2 stops33h 17m

Oslo Gardermoen

Mon 9/14

6:45 am-11:55 am

1 stop14h 10m

$516

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 9/20

6:50 pm-10:05 pm

1 stop18h 15m

Oslo Gardermoen

Tue 9/29

6:55 am-2:22 pm

2 stops16h 27m

$518

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 9/8

2:10 pm-3:45 pm

1 stop16h 35m

Oslo Gardermoen

Sun 9/20

6:25 am-11:55 am

1 stop14h 30m

$519

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Tue 9/15

3:55 pm-12:25 am

1 stop23h 30m

Oslo Sandefjord

Tue 9/29

6:00 am-1:45 pm

1 stop16h 45m

$548

Quickest round-trip

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sun 9/6

3:55 pm-2:30 pm

1 stop13h 35m

Oslo Sandefjord

Sat 9/12

6:00 am-1:45 pm

1 stop16h 45m

$611

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

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?

The month of September is, on average, the cheapest month to fly to Oslo from State of Washington, with most prices found around $245. If you’re not able to fly to Oslo in September, then April is your next best option. Flight prices from State of Washington to Oslo during April average around $308.

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

You are more likely to see cheaper flights to Oslo from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Oslo for around $549 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Oslo from State of Washington for as low as $496 on momondo.

Cheap State of Washington to Oslo flight deals and tips

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

Fastest flight time	11h 20m
Direct flights	None

The fastest flight from State of Washington to Oslo takes 11h 20m

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

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Frequently asked questions about flying from Washington to Oslo

When did momondo last update prices for flights from Washington to Oslo?
Prices for flights from Washington to Oslo are updated daily.
How many operators does momondo search for flights from Washington to Oslo?
There are 7 operators available for flights from Washington to Oslo as of June 2026.
How old do you have to be to fly from Washington to Oslo?
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.
What documentation or ID do you need to fly to Oslo?
The required travel and health documents for your Oslo trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Oslo. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from State of Washington to Oslo

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

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $353	Free Cancellation	Rating 6.7 8,072 reviews	Search British Airways flights
Icelandair	PriceFrom $393	Free Cancellation	Rating 7.0 689 reviews	Search Icelandair flights
Delta	PriceFrom $457	Free Cancellation	Rating 7.8 8,438 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $476	Free Cancellation	Rating 7.4 1,854 reviews	Search Scandinavian Airlines flights
United Airlines	PriceFrom $491	Free Cancellation	Rating 7.4 9,886 reviews	Search United Airlines flights
Lufthansa	PriceFrom $493	Free Cancellation	Rating 6.8 8,093 reviews	Search Lufthansa flights
KLM	PriceFrom $498	Free Cancellation	Rating 7.8 1,530 reviews	Search KLM flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington to Oslo. Millions of users trust and use momondo every year so you are in good hands.

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?

Of course. momondo tracks the price of Washington to Oslo flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Washington to Oslo from $193

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 8/25. 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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KLM flights from State of Washington to Oslo

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

What is the cheapest month to fly to Oslo?

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

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

What airlines fly to Oslo?

How long does it take to fly to Oslo?

Cheap State of Washington to Oslo flight deals and tips

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Why use momondo?

An easier way to manage your Oslo 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.

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