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

British Airways, American Airlines, and Finnair are the most popular carriers operating from Oslo to Washington

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

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

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

There are 3 operators available for flights from Oslo to Washington as of June 2026.

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

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 Oslo 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.

$400 Cheap Flights from Oslo to Washington in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Oslo to Washington

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:45 am - 11:55 am

OSL

SEA

14h 10m

1 stop

8:10 am - 12:15 pm

SEA

OSL

19h 05m

2 stops

$646Lufthansa

Thu, Aug 6 - Wed, Aug 19

6:45 am - 11:55 am

OSL

SEA

14h 10m

1 stop

6:50 pm - 5:55 pm

SEA

OSL

14h 05m

1 stop

$648Lufthansa

Thu, Aug 6 - Wed, Aug 19

6:30 am - 5:06 pm

OSL

PDX

19h 36m

2 stops

7:05 am - 11:50 am

PDX

OSL

19h 45m

2 stops

$656Delta

Wed, Jul 8 - Tue, Jul 14

6:30 am - 6:56 pm

OSL

PDX

21h 26m

2 stops

7:05 am - 11:50 am

PDX

OSL

19h 45m

2 stops

$663Delta

Wed, Jul 8 - Tue, Jul 14

6:45 am - 11:55 am

OSL

SEA

14h 10m

1 stop

2:10 pm - 6:20 pm

SEA

OSL

19h 10m

1 stop

$665United Airlines

Thu, Sep 17 - Mon, Sep 21

6:45 am - 11:55 am

OSL

SEA

14h 10m

1 stop

8:10 am - 12:20 pm

SEA

OSL

19h 10m

2 stops

$666United Airlines

Thu, Sep 17 - Mon, Sep 21

7:45 am - 11:23 pm

OSL

PDX

24h 38m

2 stops

7:30 pm - 11:25 pm

PDX

OSL

18h 55m

1 stop

$666British Airways

Thu, Oct 1 - Mon, Oct 5

7:45 am - 11:23 pm

OSL

PDX

24h 38m

2 stops

7:30 pm - 11:25 pm

PDX

OSL

18h 55m

1 stop

$667British Airways

Thu, Sep 10 - Mon, Sep 14

3:05 pm - 1:45 pm

TRF

SEA

31h 40m

1 stop

3:55 pm - 12:25 am

SEA

TRF

23h 30m

1 stop

$673Scandinavian Airlines

Mon, Sep 28 - Sat, Oct 3

3:05 pm - 1:45 pm

TRF

SEA

31h 40m

1 stop

3:55 pm - 12:25 am

SEA

TRF

23h 30m

1 stop

$705Scandinavian Airlines

Fri, Oct 2 - Sun, Oct 4

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United Airlines flights from Oslo to State of Washington

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

United Airlines

Sep 17

OSL6:45 amOslo Gardermoen

14h 10m

1 stop

SEA11:55 amSeattle/Tacoma Intl

Sep 21

SEA2:10 pmSeattle/Tacoma Intl

19h 10m

1 stop

OSL6:20 pmOslo Gardermoen

$665

United Airlines

Sep 17

OSL6:45 amOslo Gardermoen

14h 10m

1 stop

SEA11:55 amSeattle/Tacoma Intl

Sep 21

SEA8:10 amSeattle/Tacoma Intl

19h 10m

2 stops

OSL12:20 pmOslo Gardermoen

$666

United Airlines

Sep 17

OSL6:45 amOslo Gardermoen

14h 10m

1 stop

SEA11:55 amSeattle/Tacoma Intl

Sep 21

SEA2:10 pmSeattle/Tacoma Intl

19h 10m

1 stop

OSL6:20 pmOslo Gardermoen

$667

KLM flights from Oslo to State of Washington

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

KLM

Jun 22

OSL5:20 pmOslo Gardermoen

26h 50m

1 stop

PDX11:10 amPortland

Jul 7

PDX1:05 pmPortland

20h 30m

1 stop

OSL6:35 pmOslo Gardermoen

$610

KLM

Jun 22

OSL7:15 pmOslo Gardermoen

24h 55m

1 stop

PDX11:10 amPortland

Jul 7

PDX1:05 pmPortland

24h 30m

1 stop

OSL10:35 pmOslo Gardermoen

$611

KLM

Jun 18

OSL6:30 amOslo Gardermoen

13h 40m

1 stop

PDX11:10 amPortland

Jul 3

PDX1:05 pmPortland

24h 30m

1 stop

OSL10:35 pmOslo Gardermoen

$612

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 8/6

6:45 am-11:55 am

1 stop14h 10m

Seattle/Tacoma Intl

Wed 8/19

8:10 am-12:15 pm

2 stops19h 05m

$646

Quickest round-trip

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 8/6

6:45 am-11:55 am

1 stop14h 10m

Seattle/Tacoma Intl

Wed 8/19

6:50 pm-5:55 pm

1 stop14h 05m

$648

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Wed 7/8

6:30 am-5:06 pm

2 stops19h 36m

Portland

Tue 7/14

7:05 am-11:50 am

2 stops19h 45m

$656

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Wed 7/8

6:30 am-6:56 pm

2 stops21h 26m

Portland

Tue 7/14

7:05 am-11:50 am

2 stops19h 45m

$663

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 9/17

6:45 am-11:55 am

1 stop14h 10m

Seattle/Tacoma Intl

Mon 9/21

2:10 pm-6:20 pm

1 stop19h 10m

$665

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 9/17

6:45 am-11:55 am

1 stop14h 10m

Seattle/Tacoma Intl

Mon 9/21

8:10 am-12:20 pm

2 stops19h 10m

$666

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Thu 10/1

7:45 am-11:23 pm

2 stops24h 38m

Portland

Mon 10/5

7:30 pm-11:25 pm

1 stop18h 55m

$666

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Thu 9/10

7:45 am-11:23 pm

2 stops24h 38m

Portland

Mon 9/14

7:30 pm-11:25 pm

1 stop18h 55m

$667

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Mon 9/28

3:05 pm-1:45 pm

1 stop31h 40m

Seattle/Tacoma Intl

Sat 10/3

3:55 pm-12:25 am

1 stop23h 30m

$673

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Fri 10/2

3:05 pm-1:45 pm

1 stop31h 40m

Seattle/Tacoma Intl

Sun 10/4

3:55 pm-12:25 am

1 stop23h 30m

$705

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 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 November is, on average, the cheapest month to fly to State of Washington from Oslo, with most prices found around $301. If you aren’t able to travel to State of Washington during the month of November, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $323.

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

You are more likely to see cheaper flights to State of Washington from Oslo when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $632 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 for as low as $535 on momondo.

Cheap Oslo to State of Washington flight deals and tips

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

Fastest flight time	13h 10m
Direct flights	None

The fastest flight from Oslo to State of Washington takes 13h 10m

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

Search flight deals

Frequently asked questions about flying from Oslo to Washington

When did momondo last update prices for flights from Oslo to Washington?
Prices for flights from Oslo to Washington were last updated today.
How many operators does momondo search for flights from Oslo to Washington?
There are 3 operators available for flights from Oslo to Washington as of June 2026.
How old do you have to be to fly from Oslo to Washington?
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 Oslo 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 to State of Washington

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

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $443	Free Cancellation	Rating 7.0 674 reviews		Search Icelandair flights
Scandinavian Airlines	PriceFrom $588	Free Cancellation	Rating 7.4 1,827 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?

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

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

Once all potential Oslo to Washington 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 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.