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

Delta, KLM, 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 September 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.

$428 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.

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

13h 05m1 stop Reykjavik Keflavik Intl

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

32h 35m1 stop Reykjavik Keflavik Intl

$505Icelandair

Fri, Oct 9 - Fri, Oct 23

1:50 pm - 8:40 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

15h 50m1 stop Reykjavik Keflavik Intl

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

32h 35m1 stop Reykjavik Keflavik Intl

$506Icelandair

Fri, Oct 9 - Fri, Oct 23

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

34h 25m1 stop Reykjavik Keflavik Intl

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

11h 55m1 stop Reykjavik Keflavik Intl

$509Icelandair

Mon, Oct 5 - Sun, Oct 18

8:40 am - 12:36 amOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

23h 56m2 stops Helsinki-Vantaa Chicago O'Hare Intl

6:45 pm - 10:40 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

18h 55m1 stop London Heathrow

$521Multiple Airlines

Mon, Oct 26 - Mon, Nov 2

12:30 pm - 12:36 amOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

20h 06m2 stops Helsinki-Vantaa Chicago O'Hare Intl

10:27 am - 8:05 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

24h 38m2 stops Dallas/Fort Worth Helsinki-Vantaa

$532Finnair

Mon, Oct 26 - Mon, Nov 2

6:05 am - 11:47 amOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

14h 42m1 stop Amsterdam Schiphol

9:40 am - 1:50 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

19h 10m2 stops Detroit Metropolitan Wayne County London Heathrow

$561Delta

Tue, Nov 24 - Tue, Dec 15

3:10 pm - 3:50 pmOSL Oslo Gardermoen-PDX Portland

33h 40m1 stop London Heathrow

1:33 pm - 4:00 pmPDX Portland-OSL Oslo Gardermoen

17h 27m2 stops Chicago O'Hare Intl London Heathrow

$717British Airways

Thu, Jan 28 - Mon, Feb 1

3:10 pm - 3:50 pmOSL Oslo Gardermoen-PDX Portland

33h 40m1 stop London Heathrow

1:33 pm - 4:00 pmPDX Portland-OSL Oslo Gardermoen

17h 27m2 stops Chicago O'Hare Intl London Heathrow

$718British Airways

Thu, Jan 28 - Mon, Feb 1

6:00 am - 8:13 pmTRF Oslo Sandefjord-SEA Seattle/Tacoma Intl

23h 13m2 stops Kastrup Copenhagen San Francisco

7:50 am - 2:05 pmSEA Seattle/Tacoma Intl-TRF Oslo Sandefjord

21h 15m2 stops Atlanta Hartsfield-Jackson Kastrup Copenhagen

$751Scandinavian Airlines

Wed, Nov 11 - Wed, Jan 20

2:35 pm - 10:20 pmTRF Oslo Sandefjord-SEA Seattle/Tacoma Intl

40h 45m2 stops Kastrup Copenhagen Los Angeles

7:20 am - 2:05 pmSEA Seattle/Tacoma Intl-TRF Oslo Sandefjord

21h 45m2 stops Chicago O'Hare Intl Kastrup Copenhagen

$972Scandinavian Airlines

Thu, Jan 21 - Mon, Jan 25

Cheap last minute flights

Enter your travel dates to find the best prices.

6:00 am - 1:45 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

16h 45m1 stop Kastrup Copenhagen

3:55 pm - 8:10 amSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

31h 15m1 stop Kastrup Copenhagen

$700Scandinavian Airlines

Sat, Sep 19 - Sun, Oct 4

6:00 am - 1:45 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

16h 45m1 stop Kastrup Copenhagen

3:55 pm - 8:10 amSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

31h 15m1 stop Kastrup Copenhagen

$705Scandinavian Airlines

Sat, Sep 19 - Sun, Oct 4

6:00 am - 1:45 pmTRF Oslo Sandefjord-SEA Seattle/Tacoma Intl

16h 45m1 stop Kastrup Copenhagen

3:55 pm - 12:25 amSEA Seattle/Tacoma Intl-TRF Oslo Sandefjord

23h 30m1 stop Kastrup Copenhagen

$745Scandinavian Airlines

Sat, Sep 19 - Sun, Oct 4

6:00 am - 1:45 pmTRF Oslo Sandefjord-SEA Seattle/Tacoma Intl

16h 45m1 stop Kastrup Copenhagen

7:15 am - 2:30 pmSEA Seattle/Tacoma Intl-TRF Oslo Sandefjord

22h 15m2 stops Chicago O'Hare Intl Kastrup Copenhagen

$756Scandinavian Airlines

Sat, Sep 19 - Sun, Oct 4

6:00 am - 1:45 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

16h 45m1 stop Kastrup Copenhagen

7:15 am - 12:55 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

20h 40m2 stops Chicago O'Hare Intl Kastrup Copenhagen

$782Scandinavian Airlines

Sat, Sep 19 - Sun, Oct 4

6:00 am - 1:45 pmTRF Oslo Sandefjord-SEA Seattle/Tacoma Intl

16h 45m1 stop Kastrup Copenhagen

3:55 pm - 2:30 pmSEA Seattle/Tacoma Intl-TRF Oslo Sandefjord

13h 35m1 stop Kastrup Copenhagen

$788Scandinavian Airlines

Sat, Sep 19 - Sun, Oct 4

7:15 am - 7:14 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

20h 59m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

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

18h 15m1 stop Munich Franz Josef Strauss

$789Lufthansa

Sat, Sep 19 - Sun, Oct 4

6:00 am - 1:45 pmTRF Oslo Sandefjord-SEA Seattle/Tacoma Intl

16h 45m1 stop Kastrup Copenhagen

7:15 am - 2:30 pmSEA Seattle/Tacoma Intl-TRF Oslo Sandefjord

22h 15m2 stops Chicago O'Hare Intl Kastrup Copenhagen

$802Scandinavian Airlines

Sat, Sep 19 - Sun, Oct 4

11:50 am - 10:03 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

19h 13m2 stops Amsterdam Schiphol Boston Logan Intl

7:30 am - 11:05 amSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

18h 35m2 stops Portland Amsterdam Schiphol

$808Delta

Sat, Sep 19 - Sun, Oct 4

11:50 am - 10:03 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

19h 13m2 stops Amsterdam Schiphol Boston Logan Intl

7:30 am - 11:05 amSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

18h 35m2 stops Portland Amsterdam Schiphol

$810Delta

Sat, Sep 19 - Sun, Oct 4

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Icelandair flights from Oslo to State of Washington

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

Icelandair

Oct 9

OSL1:50 pmOslo Gardermoen

13h 05m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

Oct 23

SEA7:00 pmSeattle/Tacoma Intl

32h 35m

1 stop

OSL12:35 pmOslo Gardermoen

$505

Icelandair

Oct 5

OSL4:30 pmOslo Gardermoen

34h 25m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

Oct 18

SEA3:40 pmSeattle/Tacoma Intl

11h 55m

1 stop

OSL12:35 pmOslo Gardermoen

$507

Icelandair

Oct 5

OSL4:30 pmOslo Gardermoen

34h 25m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

Oct 18

SEA3:40 pmSeattle/Tacoma Intl

11h 55m

1 stop

OSL12:35 pmOslo Gardermoen

$509

Delta flights from Oslo to State of Washington

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

Delta

Nov 24

OSL6:05 amOslo Gardermoen

14h 42m

1 stop

SEA11:47 amSeattle/Tacoma Intl

Dec 15

SEA9:40 amSeattle/Tacoma Intl

19h 10m

2 stops

OSL1:50 pmOslo Gardermoen

$561

Delta

Nov 12

OSL6:05 amOslo Gardermoen

14h 42m

1 stop

SEA11:47 amSeattle/Tacoma Intl

Jan 21

SEA7:15 amSeattle/Tacoma Intl

21h 35m

2 stops

OSL1:50 pmOslo Gardermoen

$565

Delta

Oct 5

OSL6:30 amOslo Gardermoen

19h 15m

2 stops

SEA4:45 pmSeattle/Tacoma Intl

Oct 19

SEA9:50 pmSeattle/Tacoma Intl

16h 10m

1 stop

OSL11:00 pmOslo Gardermoen

$568

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Fri 10/9

1:50 pm-5:55 pm

1 stop13h 05m

Seattle/Tacoma Intl

Fri 10/23

7:00 pm-12:35 pm

1 stop32h 35m

$505

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Fri 10/9

1:50 pm-8:40 pm

1 stop15h 50m

Seattle/Tacoma Intl

Fri 10/23

7:00 pm-12:35 pm

1 stop32h 35m

$506

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

3:40 pm-12:35 pm

1 stop11h 55m

$509

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 10/26

8:40 am-12:36 am

2 stops23h 56m

Seattle/Tacoma Intl

Mon 11/2

6:45 pm-10:40 pm

1 stop18h 55m

$521

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Mon 10/26

12:30 pm-12:36 am

2 stops20h 06m

Seattle/Tacoma Intl

Mon 11/2

10:27 am-8:05 pm

2 stops24h 38m

$532

Quickest round-trip

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Tue 11/24

6:05 am-11:47 am

1 stop14h 42m

Seattle/Tacoma Intl

Tue 12/15

9:40 am-1:50 pm

2 stops19h 10m

$561

OsloPortland

OSL Oslo Gardermoen - PDX Portland

OSLPDX

Oslo Gardermoen

Thu 1/28

3:10 pm-3:50 pm

1 stop33h 40m

Portland

Mon 2/1

1:33 pm-4:00 pm

2 stops17h 27m

$717

OsloPortland

OSL Oslo Gardermoen - PDX Portland

OSLPDX

Oslo Gardermoen

Thu 1/28

3:10 pm-3:50 pm

1 stop33h 40m

Portland

Mon 2/1

1:33 pm-4:00 pm

2 stops17h 27m

$718

OsloSeattle

TRF Oslo Sandefjord - SEA Seattle/Tacoma Intl

TRFSEA

Oslo Sandefjord

Wed 11/11

6:00 am-8:13 pm

2 stops23h 13m

Seattle/Tacoma Intl

Wed 1/20

7:50 am-2:05 pm

2 stops21h 15m

$751

OsloSeattle

TRF Oslo Sandefjord - SEA Seattle/Tacoma Intl

TRFSEA

Oslo Sandefjord

Thu 1/21

2:35 pm-10:20 pm

2 stops40h 45m

Seattle/Tacoma Intl

Mon 1/25

7:20 am-2:05 pm

2 stops21h 45m

$972

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 October is, on average, the cheapest month to fly to State of Washington from Oslo, with most prices found around $552. If you aren’t able to travel to State of Washington during the month of October, then flying in April 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 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 $658 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 $595 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

Best Price Found	$428
Fastest flight time	12h 50m
Direct flights	None

The best one-way flight to State of Washington from Oslo in the past 72 hours is $428. The best round-trip flight deal from Oslo to State of Washington found on momondo in the last 72 hours is $505.

The fastest flight from Oslo to State of Washington takes 12h 50m

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 September 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 6.9 743 reviews		Search Icelandair flights
Scandinavian Airlines	PriceFrom $588	Free Cancellation	Rating 7.4 1,986 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.