What is the cheapest airline that flies from Oslo to Seattle/Tacoma Intl?

American Airlines and British Airways are the most popular carriers operating from Oslo to Seattle/Tacoma Intl

When did momondo last update prices for flights from Oslo to Seattle/Tacoma Intl Airport?

Prices for flights from Oslo to Seattle/Tacoma Intl Airport are updated daily.

How many operators does momondo search for flights from Oslo to Seattle/Tacoma Intl Airport?

As of June 2026, there are 2 operators available to choose from for flights from Oslo to Seattle/Tacoma Intl Airport.

How old do you have to be to fly from Oslo to Seattle/Tacoma Intl Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Oslo to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The required travel and health documents for your Seattle/Tacoma Intl Airport 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 Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$400 Cheap Flights from Oslo to Seattle in 2026

Q: What is the typical price of a round-trip flight between Oslo and Seattle?

Prices are currently low for flights on this route. Typical prices usually range from $941 to $681. The lowest price recently found on this route was $649.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Oslo to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:00 pm - 1:45 pm

OSL

SEA

25h 45m

1 stop

3:55 pm - 2:05 pm

SEA

OSL

13h 10m

1 stop

$649Scandinavian Airlines

Thu, Aug 13 - Tue, Aug 25

4:30 pm - 8:40 pm

OSL

SEA

13h 10m

1 stop

7:00 pm - 3:25 pm

SEA

OSL

11h 25m

1 stop

$656Icelandair

Wed, Aug 12 - Mon, Aug 24

6:55 am - 11:55 am

OSL

SEA

14h 00m

1 stop

6:50 pm - 5:55 pm

SEA

OSL

14h 05m

1 stop

$665United Airlines

Tue, Aug 11 - Wed, Aug 26

6:35 am - 11:55 am

OSL

SEA

14h 20m

1 stop

8:10 am - 10:05 pm

SEA

OSL

28h 55m

2 stops

$666United Airlines

Wed, Aug 12 - Wed, Aug 26

6:00 am - 1:45 pm

TRF

SEA

16h 45m

1 stop

3:55 pm - 12:25 am

SEA

TRF

23h 30m

1 stop

$667Scandinavian Airlines

Tue, Sep 15 - Tue, Sep 29

6:55 am - 11:55 am

OSL

SEA

14h 00m

1 stop

10:41 am - 6:25 pm

SEA

OSL

22h 44m

2 stops

$667United Airlines

Tue, Aug 11 - Wed, Aug 26

6:00 am - 1:45 pm

TRF

SEA

16h 45m

1 stop

3:55 pm - 2:30 pm

SEA

TRF

13h 35m

1 stop

$669Scandinavian Airlines

Fri, Aug 14 - Sun, Aug 23

9:55 am - 1:45 pm

OSL

SEA

12h 50m

1 stop

3:55 pm - 12:55 pm

SEA

OSL

12h 00m

1 stop

$671Scandinavian Airlines

Fri, Aug 14 - Sat, Aug 29

6:45 am - 10:56 pm

OSL

SEA

25h 11m

2 stops

6:50 pm - 10:05 pm

SEA

OSL

18h 15m

1 stop

$672United Airlines

Mon, Aug 10 - Sun, Aug 23

9:55 am - 8:46 pm

OSL

SEA

19h 51m

2 stops

8:10 am - 12:20 pm

SEA

OSL

19h 10m

2 stops

$673United Airlines

Mon, Aug 10 - Thu, Aug 27

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Icelandair flights from Oslo to Seattle

Our best Icelandair deals on Oslo to Seattle flight tickets

Icelandair

Aug 12

OSL4:30 pmOslo Gardermoen

13h 10m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

Aug 24

SEA7:00 pmSeattle/Tacoma Intl

11h 25m

1 stop

OSL3:25 pmOslo Gardermoen

$656

Icelandair

Jul 16

OSL4:30 pmOslo Gardermoen

13h 10m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

Jul 23

SEA7:00 pmSeattle/Tacoma Intl

32h 35m

1 stop

OSL12:35 pmOslo Gardermoen

$799

Icelandair

Jul 12

OSL4:30 pmOslo Gardermoen

28h 15m

1 stop

SEA11:45 amSeattle/Tacoma Intl

Jul 16

SEA11:25 pmSeattle/Tacoma Intl

31h 00m

1 stop

OSL3:25 pmOslo Gardermoen

$805

Delta flights from Oslo to Seattle

Our best Delta deals on Oslo to Seattle flight tickets

Delta

Aug 11

OSL9:20 amOslo Gardermoen

35h 17m

1 stop

SEA11:37 amSeattle/Tacoma Intl

Aug 24

SEA9:45 pmSeattle/Tacoma Intl

13h 55m

1 stop

OSL8:40 pmOslo Gardermoen

$694

Delta

Aug 15

OSL6:30 amOslo Gardermoen

13h 45m

1 stop

SEA11:15 amSeattle/Tacoma Intl

Aug 26

SEA9:45 pmSeattle/Tacoma Intl

31h 00m

1 stop

OSL1:45 pmOslo Gardermoen

$701

Delta

Aug 15

OSL6:30 amOslo Gardermoen

13h 45m

1 stop

SEA11:15 amSeattle/Tacoma Intl

Aug 24

SEA10:40 amSeattle/Tacoma Intl

18h 00m

2 stops

OSL1:40 pmOslo Gardermoen

$712

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 8/13

9:00 pm-1:45 pm

1 stop25h 45m

Seattle/Tacoma Intl

Tue 8/25

3:55 pm-2:05 pm

1 stop13h 10m

$649

Quickest round-trip

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 8/12

4:30 pm-8:40 pm

1 stop13h 10m

Seattle/Tacoma Intl

Mon 8/24

7:00 pm-3:25 pm

1 stop11h 25m

$656

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Tue 8/11

6:55 am-11:55 am

1 stop14h 00m

Seattle/Tacoma Intl

Wed 8/26

6:50 pm-5:55 pm

1 stop14h 05m

$665

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 8/12

6:35 am-11:55 am

1 stop14h 20m

Seattle/Tacoma Intl

Wed 8/26

8:10 am-10:05 pm

2 stops28h 55m

$666

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Tue 9/15

6:00 am-1:45 pm

1 stop16h 45m

Seattle/Tacoma Intl

Tue 9/29

3:55 pm-12:25 am

1 stop23h 30m

$667

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Tue 8/11

6:55 am-11:55 am

1 stop14h 00m

Seattle/Tacoma Intl

Wed 8/26

10:41 am-6:25 pm

2 stops22h 44m

$667

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Fri 8/14

6:00 am-1:45 pm

1 stop16h 45m

Seattle/Tacoma Intl

Sun 8/23

3:55 pm-2:30 pm

1 stop13h 35m

$669

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 8/14

9:55 am-1:45 pm

1 stop12h 50m

Seattle/Tacoma Intl

Sat 8/29

3:55 pm-12:55 pm

1 stop12h 00m

$671

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 8/10

6:45 am-10:56 pm

2 stops25h 11m

Seattle/Tacoma Intl

Sun 8/23

6:50 pm-10:05 pm

1 stop18h 15m

$672

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 8/10

9:55 am-8:46 pm

2 stops19h 51m

Seattle/Tacoma Intl

Thu 8/27

8:10 am-12:20 pm

2 stops19h 10m

$673

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 Seattle

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 typical price of a round-trip flight between Oslo and Seattle?

What is the cheapest month to fly to Seattle?

In general, November is the cheapest month to fly from Oslo to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $301. If you don’t want to visit Seattle in November, then you should wait until February to fly from Oslo, when ticket prices are also cheap, with an average price of $323.

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

You are more likely to see cheaper flights to Seattle from Oslo when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $631 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Oslo for as low as $536 on momondo.

Cheap Oslo to Seattle flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Oslo to Seattle

Fastest flight time	13h 10m
Direct flights	None

The fastest flight from Oslo to Seattle takes 13h 10m

There are no direct flights from Oslo to Seattle. There are no popular flight routes from Oslo to Seattle.

Search flight deals

Frequently asked questions about flying from Oslo to Seattle

How far is Oslo to Seattle/Tacoma Intl by plane?
There are 4550.6 mi between Oslo and Seattle/Tacoma Intl. Typically, this will take 13h 10m by plane in normal conditions.
When did momondo last update prices for flights from Oslo to Seattle/Tacoma Intl Airport?
Prices for flights from Oslo to Seattle/Tacoma Intl Airport are updated daily.
How many operators does momondo search for flights from Oslo to Seattle/Tacoma Intl Airport?
As of June 2026, there are 2 operators available to choose from for flights from Oslo to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Oslo to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Oslo to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport 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 Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Oslo to Seattle

Compare and see reviews for airlines that fly from Oslo to Seattle with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $443	Free Cancellation	Rating 7.0 678 reviews		Search Icelandair flights
Scandinavian Airlines	PriceFrom $588	Free Cancellation	Rating 7.4 1,830 reviews		Search Scandinavian Airlines flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Redmond

Kent

Lakewood

Puyallup

Tukwila

Federal Way

Fife

Cle Elum

Marysville

Centralia

Shoreline

Kirkland

Westport

Why use momondo?

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

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

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

All flight searches from Oslo to Seattle on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Oslo to Seattle 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 Seattle right now. Can momondo alert me if prices change?

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