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

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

What airlines fly to Seattle?

Icelandair, Scandinavian Airlines and Lufthansa are the top three most popular airlines that fly to Seattle from Oslo according to our data. Icelandair is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 4 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

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 March 2026, there are 4 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.

$334 Cheap Flights from Oslo to Seattle in 2026

1 adult

0 bags

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 Oslo to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:50 pm - 8:40 pm

OSL

SEA

15h 50m

1 stop

7:00 pm - 12:35 pm

SEA

OSL

32h 35m

1 stop

$457Icelandair

Thu, Apr 9 - Thu, Apr 23

4:30 pm - 8:40 pm

OSL

SEA

13h 10m

1 stop

3:40 pm - 12:35 pm

SEA

OSL

11h 55m

1 stop

$459Icelandair

Thu, Apr 2 - Thu, Apr 16

1:50 pm - 5:55 pm

OSL

SEA

13h 05m

1 stop

7:00 pm - 3:25 pm

SEA

OSL

11h 25m

1 stop

$468Icelandair

Fri, May 15 - Fri, May 29

7:15 pm - 11:45 am

OSL

SEA

25h 30m

1 stop

1:30 pm - 4:40 pm

SEA

OSL

18h 10m

1 stop

$496Multiple Airlines

Thu, Apr 2 - Thu, Apr 16

12:50 pm - 10:38 pm

OSL

SEA

18h 48m

2 stops

5:40 pm - 8:10 pm

SEA

OSL

17h 30m

1 stop

$502Finnair

Fri, May 15 - Fri, May 29

6:30 am - 11:45 am

OSL

SEA

14h 15m

1 stop

5:35 pm - 4:20 pm

SEA

OSL

13h 45m

1 stop

$503KLM

Thu, Apr 2 - Thu, Apr 16

12:50 pm - 10:38 pm

OSL

SEA

18h 48m

2 stops

7:09 am - 12:05 pm

SEA

OSL

19h 56m

2 stops

$509Finnair

Thu, Apr 9 - Thu, Apr 23

6:00 am - 8:43 pm

TRF

SEA

23h 43m

2 stops

7:00 am - 12:25 am

SEA

TRF

32h 25m

2 stops

$717Scandinavian Airlines

Fri, Apr 24 - Mon, Apr 27

6:00 am - 11:51 pm

TRF

SEA

26h 51m

2 stops

7:20 am - 2:30 pm

SEA

TRF

22h 10m

2 stops

$730Scandinavian Airlines

Fri, Apr 24 - Mon, Apr 27

12:10 pm - 8:40 pm

TRF

SEA

17h 30m

2 stops

7:00 pm - 6:35 pm

SEA

TRF

14h 35m

2 stops

$948Multiple Airlines

Sun, May 3 - Fri, May 8

Delta flights from Oslo to Seattle

Our best Delta deals on Oslo to Seattle flight tickets

Delta

Apr 2

OSL11:50 amOslo Gardermoen

13h 40m

1 stop

SEA4:30 pmSeattle/Tacoma Intl

Apr 16

SEA9:15 amSeattle/Tacoma Intl

17h 30m

2 stops

OSL11:45 amOslo Gardermoen

$547

Delta

May 15

OSL11:50 amOslo Gardermoen

19h 50m

2 stops

SEA10:40 pmSeattle/Tacoma Intl

May 29

SEA10:35 amSeattle/Tacoma Intl

15h 30m

2 stops

OSL11:05 amOslo Gardermoen

$550

Delta

Apr 30

OSL6:30 amOslo Gardermoen

21h 35m

2 stops

SEA7:05 pmSeattle/Tacoma Intl

May 7

SEA10:35 amSeattle/Tacoma Intl

18h 05m

2 stops

OSL1:40 pmOslo Gardermoen

$551

United Airlines flights from Oslo to Seattle

Our best United Airlines deals on Oslo to Seattle flight tickets

United Airlines

May 3

OSL6:25 amOslo Gardermoen

14h 55m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

May 8

SEA8:10 amSeattle/Tacoma Intl

24h 45m

2 stops

OSL5:55 pmOslo Gardermoen

$572

United Airlines

Apr 2

OSL6:45 amOslo Gardermoen

14h 35m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

Apr 16

SEA2:10 pmSeattle/Tacoma Intl

16h 40m

1 stop

OSL3:50 pmOslo Gardermoen

$574

United Airlines

Apr 17

OSL6:25 amOslo Gardermoen

14h 55m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

Apr 20

SEA11:59 pmSeattle/Tacoma Intl

32h 16m

2 stops

OSL5:15 pmOslo Gardermoen

$576

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/9

1:50 pm-8:40 pm

1 stop15h 50m

Seattle/Tacoma Intl

Thu 4/23

7:00 pm-12:35 pm

1 stop32h 35m

$457

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/2

4:30 pm-8:40 pm

1 stop13h 10m

Seattle/Tacoma Intl

Thu 4/16

3:40 pm-12:35 pm

1 stop11h 55m

$459

Quickest round-trip

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 5/15

1:50 pm-5:55 pm

1 stop13h 05m

Seattle/Tacoma Intl

Fri 5/29

7:00 pm-3:25 pm

1 stop11h 25m

$468

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/2

7:15 pm-11:45 am

1 stop25h 30m

Seattle/Tacoma Intl

Thu 4/16

1:30 pm-4:40 pm

1 stop18h 10m

$496

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 5/15

12:50 pm-10:38 pm

2 stops18h 48m

Seattle/Tacoma Intl

Fri 5/29

5:40 pm-8:10 pm

1 stop17h 30m

$502

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/2

6:30 am-11:45 am

1 stop14h 15m

Seattle/Tacoma Intl

Thu 4/16

5:35 pm-4:20 pm

1 stop13h 45m

$503

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/9

12:50 pm-10:38 pm

2 stops18h 48m

Seattle/Tacoma Intl

Thu 4/23

7:09 am-12:05 pm

2 stops19h 56m

$509

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Fri 4/24

6:00 am-8:43 pm

2 stops23h 43m

Seattle/Tacoma Intl

Mon 4/27

7:00 am-12:25 am

2 stops32h 25m

$717

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Fri 4/24

6:00 am-11:51 pm

2 stops26h 51m

Seattle/Tacoma Intl

Mon 4/27

7:20 am-2:30 pm

2 stops22h 10m

$730

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Sun 5/3

12:10 pm-8:40 pm

2 stops17h 30m

Seattle/Tacoma Intl

Fri 5/8

7:00 pm-6:35 pm

2 stops14h 35m

$948

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 cheapest month to fly to Seattle?

In general, October 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 $504. If you don’t want to visit Seattle in October, then you should wait until February to fly from Oslo, when ticket prices are also cheap, with an average price of $511.

How far in advance should I book a flight 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 $613 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 $521 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	14h 35m
Direct flights	None

The fastest flight from Oslo to Seattle takes 14h 35m

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

Search flight deals

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 14h 35m 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 March 2026, there are 4 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 7.1 622 reviews	Search Icelandair flights
Delta	PriceFrom $466	Free Cancellation	Rating 7.9 8,288 reviews	Search Delta flights
Lufthansa	PriceFrom $474	Free Cancellation	Rating 6.8 7,857 reviews	Search Lufthansa flights
Scandinavian Airlines	PriceFrom $603	Free Cancellation	Rating 7.3 1,716 reviews	Search Scandinavian Airlines flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Redmond

Marysville

Puyallup

Cle Elum

Lakewood

Tukwila

Federal Way

Fife

Westport

Centralia

Kirkland

Tumwater

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.