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

Icelandair, Air France, and Delta 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 November 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.

$380 Cheap Flights from Oslo to Seattle in 2026/27

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.

3:10 pm - 11:25 amOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

29h 15m1 stop London Heathrow

6:45 pm - 11:00 amSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

31h 15m1 stop London Heathrow

$449British Airways

Fri, Dec 25 - Sun, Jan 10

3:10 pm - 11:25 amOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

29h 15m1 stop London Heathrow

10:17 am - 11:00 amSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

39h 43m2 stops Chicago O'Hare Intl London Heathrow

$453British Airways

Fri, Dec 25 - Sun, Jan 10

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

13h 05m1 stop Reykjavik Keflavik Intl

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

11h 55m1 stop Reykjavik Keflavik Intl

$458Icelandair

Tue, Apr 20 - Sat, Apr 24

3:10 pm - 11:25 amOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

29h 15m1 stop London Heathrow

6:45 pm - 11:00 amSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

31h 15m1 stop London Heathrow

$460British Airways

Fri, Dec 25 - Sun, Jan 10

4:20 pm - 8:40 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

13h 20m1 stop Reykjavik Keflavik Intl

3:40 pm - 3:20 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

14h 40m1 stop Reykjavik Keflavik Intl

$463Icelandair

Sat, Apr 3 - Mon, Apr 5

4:20 pm - 8:40 pmOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

13h 20m1 stop Reykjavik Keflavik Intl

3:40 pm - 3:20 pmSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

14h 40m1 stop Reykjavik Keflavik Intl

$464Icelandair

Sat, Apr 3 - Mon, Apr 5

3:10 pm - 11:25 amOSL Oslo Gardermoen-SEA Seattle/Tacoma Intl

29h 15m1 stop London Heathrow

6:06 am - 11:00 amSEA Seattle/Tacoma Intl-OSL Oslo Gardermoen

43h 54m2 stops Chicago O'Hare Intl London Heathrow

$480British Airways

Fri, Dec 25 - Sun, Jan 10

6:00 am - 10:05 pmTRF Oslo Sandefjord-SEA Seattle/Tacoma Intl

25h 05m2 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

$791Scandinavian Airlines

Thu, Mar 4 - Mon, Mar 8

6:00 am - 10:05 pmTRF Oslo Sandefjord-SEA Seattle/Tacoma Intl

25h 05m2 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

$799Scandinavian Airlines

Thu, Mar 4 - Mon, Mar 8

2:35 pm - 11:18 pmTRF Oslo Sandefjord-SEA Seattle/Tacoma Intl

41h 43m2 stops Kastrup Copenhagen San Francisco

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

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

$800Scandinavian Airlines

Thu, Mar 4 - Mon, Mar 8

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

Air France flights from Oslo to Seattle

Our best Air France deals on Oslo to Seattle flight tickets

Air France

Nov 21

OSL6:15 amOslo Gardermoen

16h 35m

1 stop

SEA1:50 pmSeattle/Tacoma Intl

Dec 5

SEA4:05 pmSeattle/Tacoma Intl

15h 05m

1 stop

OSL4:10 pmOslo Gardermoen

$585

Air France

Nov 21

OSL6:15 amOslo Gardermoen

19h 38m

2 stops

SEA4:53 pmSeattle/Tacoma Intl

Dec 5

SEA4:05 pmSeattle/Tacoma Intl

22h 15m

1 stop

OSL11:20 pmOslo Gardermoen

$593

KLM flights from Oslo to Seattle

Our best KLM deals on Oslo to Seattle flight tickets

KLM

Nov 19

OSL6:05 amOslo Gardermoen

17h 50m

2 stops

SEA2:55 pmSeattle/Tacoma Intl

Dec 2

SEA9:40 amSeattle/Tacoma Intl

17h 05m

2 stops

OSL11:45 amOslo Gardermoen

$588

KLM

Dec 21

OSL6:55 pmOslo Gardermoen

25h 55m

1 stop

SEA11:50 amSeattle/Tacoma Intl

Dec 28

SEA2:35 pmSeattle/Tacoma Intl

18h 35m

1 stop

OSL6:10 pmOslo Gardermoen

$756

KLM

Dec 21

OSL6:55 pmOslo Gardermoen

25h 55m

1 stop

SEA11:50 amSeattle/Tacoma Intl

Dec 28

SEA10:35 amSeattle/Tacoma Intl

16h 10m

2 stops

OSL11:45 amOslo Gardermoen

$760

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Fri 12/25

3:10 pm-11:25 am

1 stop29h 15m

Seattle/Tacoma Intl

Sun 1/10

6:45 pm-11:00 am

1 stop31h 15m

$449

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Fri 12/25

3:10 pm-11:25 am

1 stop29h 15m

Seattle/Tacoma Intl

Sun 1/10

10:17 am-11:00 am

2 stops39h 43m

$453

Quickest round-trip

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Tue 4/20

1:50 pm-5:55 pm

1 stop13h 05m

Seattle/Tacoma Intl

Sat 4/24

3:40 pm-12:35 pm

1 stop11h 55m

$458

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Fri 12/25

3:10 pm-11:25 am

1 stop29h 15m

Seattle/Tacoma Intl

Sun 1/10

6:45 pm-11:00 am

1 stop31h 15m

$460

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sat 4/3

4:20 pm-8:40 pm

1 stop13h 20m

Seattle/Tacoma Intl

Mon 4/5

3:40 pm-3:20 pm

1 stop14h 40m

$463

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Sat 4/3

4:20 pm-8:40 pm

1 stop13h 20m

Seattle/Tacoma Intl

Mon 4/5

3:40 pm-3:20 pm

1 stop14h 40m

$464

OsloSeattle

OSL Oslo Gardermoen - SEA Seattle/Tacoma Intl

OSLSEA

Oslo Gardermoen

Fri 12/25

3:10 pm-11:25 am

1 stop29h 15m

Seattle/Tacoma Intl

Sun 1/10

6:06 am-11:00 am

2 stops43h 54m

$480

OsloSeattle

TRF Oslo Sandefjord - SEA Seattle/Tacoma Intl

TRFSEA

Oslo Sandefjord

Thu 3/4

6:00 am-10:05 pm

2 stops25h 05m

Seattle/Tacoma Intl

Mon 3/8

7:20 am-2:05 pm

2 stops21h 45m

$791

OsloSeattle

TRF Oslo Sandefjord - SEA Seattle/Tacoma Intl

TRFSEA

Oslo Sandefjord

Thu 3/4

6:00 am-10:05 pm

2 stops25h 05m

Seattle/Tacoma Intl

Mon 3/8

7:20 am-2:05 pm

2 stops21h 45m

$799

OsloSeattle

TRF Oslo Sandefjord - SEA Seattle/Tacoma Intl

TRFSEA

Oslo Sandefjord

Thu 3/4

2:35 pm-11:18 pm

2 stops41h 43m

Seattle/Tacoma Intl

Mon 3/8

7:20 am-2:05 pm

2 stops21h 45m

$800

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?

Prices are currently low for flights on this route.

Typical prices usually range from $549 to $635.
The lowest price recently found on this route was $449.

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 $543. If you don’t want to visit Seattle in October, then you should wait until April to fly from Oslo, when ticket prices are also cheap, with an average price of $552.

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 $664 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 $592 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

Best Price Found	$380
Fastest flight time	12h 50m
Direct flights	None

The best one-way flight to Seattle from Oslo in the past 72 hours is $380. The best round-trip flight deal from Oslo to Seattle found on momondo in the last 72 hours is $449.

The fastest flight from Oslo to Seattle takes 12h 50m

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 12h 50m 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 November 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 6.9 767 reviews		Search Icelandair flights
Scandinavian Airlines	PriceFrom $588	Free Cancellation	Rating 7.5 2,024 reviews		Search Scandinavian Airlines flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Kent

Olympia

Federal Way

Redmond

Lakewood

Lynnwood

Fife

Puyallup

Tukwila

Cle Elum

Marysville

Lacey

Kirkland

Centralia

Shoreline

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.