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

Icelandair, SWISS, and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Oslo

What airlines fly to Oslo?

Icelandair, Scandinavian Airlines and Delta are the top three most popular airlines that fly to Oslo from Seattle according to our data. Icelandair is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Oslo. Keep in mind that there are 10 different airlines that fly to Oslo on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Seattle/Tacoma Intl Airport to Oslo are refreshed on a daily basis.

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

The number of operators available for flights from Seattle/Tacoma Intl Airport to Oslo is 10 as of January 2026.

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

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 Seattle/Tacoma Intl Airport to Oslo.

What documentation or ID do you need to fly to Oslo?

The travel and health documents you'll need for your trip to Oslo may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Oslo. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$214 Cheap Flights from Seattle to Oslo in 2026

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Find the cheapest flights from Seattle to Oslo

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:35 pm - 11:35 am

SEA

OSL

12h 00m

1 stop

9:30 pm - 5:00 pm

OSL

SEA

28h 30m

1 stop

$369Icelandair

Mon, Feb 16 - Sun, Mar 1

3:40 pm - 3:25 pm

SEA

OSL

14h 45m

1 stop

1:50 pm - 8:40 pm

OSL

SEA

15h 50m

1 stop

$380Icelandair

Fri, May 8 - Thu, May 21

3:40 pm - 12:35 pm

SEA

OSL

11h 55m

1 stop

1:50 pm - 8:40 pm

OSL

SEA

15h 50m

1 stop

$397Icelandair

Tue, Mar 31 - Wed, Apr 8

3:40 pm - 12:35 pm

SEA

OSL

11h 55m

1 stop

1:50 pm - 8:40 pm

OSL

SEA

15h 50m

1 stop

$401Icelandair

Tue, Mar 31 - Wed, Apr 8

7:00 pm - 12:35 pm

SEA

OSL

32h 35m

1 stop

1:50 pm - 8:40 pm

OSL

SEA

15h 50m

1 stop

$403Icelandair

Sun, Apr 5 - Mon, Apr 13

7:00 pm - 12:35 pm

SEA

OSL

32h 35m

1 stop

4:30 pm - 5:55 pm

OSL

SEA

34h 25m

1 stop

$404Icelandair

Sun, Apr 5 - Sun, Apr 12

7:00 pm - 6:35 pm

SEA

TRF

14h 35m

2 stops

12:10 pm - 5:55 pm

TRF

SEA

14h 45m

2 stops

$744Multiple Airlines

Fri, May 8 - Fri, May 22

9:50 am - 12:25 am

SEA

TRF

29h 35m

2 stops

6:00 am - 1:45 pm

TRF

SEA

16h 45m

1 stop

$753Scandinavian Airlines

Tue, May 12 - Tue, Jun 2

3:55 pm - 8:25 pm

SEA

TRF

19h 30m

1 stop

1:50 pm - 10:05 pm

TRF

SEA

41h 15m

2 stops

$788Scandinavian Airlines

Sun, Jun 21 - Tue, Jul 14

3:55 pm - 8:25 pm

SEA

TRF

19h 30m

1 stop

8:55 pm - 1:45 pm

TRF

SEA

25h 50m

1 stop

$795Scandinavian Airlines

Tue, Jun 23 - Mon, Jul 6

Delta flights from Seattle to Oslo

Our best Delta deals on Seattle to Oslo flight tickets

Delta

Mar 29

SEA10:58 pmSeattle/Tacoma Intl

25h 17m

2 stops

OSL9:15 amOslo Gardermoen

Apr 6

OSL6:30 amOslo Gardermoen

20h 08m

1 stop

SEA5:38 pmSeattle/Tacoma Intl

$467

Delta

Mar 29

SEA10:58 pmSeattle/Tacoma Intl

25h 17m

2 stops

OSL9:15 amOslo Gardermoen

Apr 5

OSL6:30 amOslo Gardermoen

14h 15m

1 stop

SEA11:45 amSeattle/Tacoma Intl

$468

Delta

Feb 25

SEA2:15 pmSeattle/Tacoma Intl

22h 15m

1 stop

OSL9:30 pmOslo Gardermoen

Mar 9

OSL9:25 amOslo Gardermoen

22h 30m

2 stops

SEA11:55 pmSeattle/Tacoma Intl

$472

United Airlines flights from Seattle to Oslo

Our best United Airlines deals on Seattle to Oslo flight tickets

United Airlines

Feb 2

SEA8:40 amSeattle/Tacoma Intl

24h 00m

3 stops

OSL5:40 pmOslo Gardermoen

Feb 8

OSL6:05 amOslo Gardermoen

24h 53m

2 stops

SEA9:58 pmSeattle/Tacoma Intl

$539

United Airlines

Feb 5

SEA10:58 amSeattle/Tacoma Intl

21h 42m

2 stops

OSL5:40 pmOslo Gardermoen

Feb 8

OSL9:35 amOslo Gardermoen

22h 08m

3 stops

SEA10:43 pmSeattle/Tacoma Intl

$540

United Airlines

Feb 3

SEA9:25 amSeattle/Tacoma Intl

47h 15m

3 stops

OSL5:40 pmOslo Gardermoen

Feb 8

OSL6:05 amOslo Gardermoen

24h 53m

2 stops

SEA9:58 pmSeattle/Tacoma Intl

$551

Fly from

Fly to

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 2/16

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sun 3/1

9:30 pm-5:00 pm

1 stop28h 30m

$369

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 5/8

3:40 pm-3:25 pm

1 stop14h 45m

Oslo Gardermoen

Thu 5/21

1:50 pm-8:40 pm

1 stop15h 50m

$380

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/31

3:40 pm-12:35 pm

1 stop11h 55m

Oslo Gardermoen

Wed 4/8

1:50 pm-8:40 pm

1 stop15h 50m

$397

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/31

3:40 pm-12:35 pm

1 stop11h 55m

Oslo Gardermoen

Wed 4/8

1:50 pm-8:40 pm

1 stop15h 50m

$401

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 4/5

7:00 pm-12:35 pm

1 stop32h 35m

Oslo Gardermoen

Mon 4/13

1:50 pm-8:40 pm

1 stop15h 50m

$403

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 4/5

7:00 pm-12:35 pm

1 stop32h 35m

Oslo Gardermoen

Sun 4/12

4:30 pm-5:55 pm

1 stop34h 25m

$404

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Fri 5/8

7:00 pm-6:35 pm

2 stops14h 35m

Oslo Sandefjord

Fri 5/22

12:10 pm-5:55 pm

2 stops14h 45m

$744

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Tue 5/12

9:50 am-12:25 am

2 stops29h 35m

Oslo Sandefjord

Tue 6/2

6:00 am-1:45 pm

1 stop16h 45m

$753

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sun 6/21

3:55 pm-8:25 pm

1 stop19h 30m

Oslo Sandefjord

Tue 7/14

1:50 pm-10:05 pm

2 stops41h 15m

$788

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Tue 6/23

3:55 pm-8:25 pm

1 stop19h 30m

Oslo Sandefjord

Mon 7/6

8:55 pm-1:45 pm

1 stop25h 50m

$795

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 Seattle to Oslo

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 Oslo?

The month of January is, on average, the cheapest month to fly to Oslo from Seattle, with most prices found around $422. If you’re not able to fly to Oslo in January, then November is your next best option. Flight prices from Seattle to Oslo during November average around $482.

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

You are more likely to see cheaper flights to Oslo from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Oslo for around $587 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Oslo from Seattle for as low as $533 on momondo.

Cheap Seattle to Oslo flight deals and tips

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

Fastest flight time	11h 25m
Direct flights	None

The fastest flight from Seattle to Oslo takes 11h 25m

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

Search flight deals

How far is Seattle/Tacoma Intl to Oslo by plane?
Seattle/Tacoma Intl and Oslo are 4550.6 mi apart from one another. A reasonable flight in good conditions will take 11h 25m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Oslo?
Prices for flights from Seattle/Tacoma Intl Airport to Oslo are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Oslo?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Oslo is 10 as of January 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Oslo?
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 Seattle/Tacoma Intl Airport to Oslo.
What documentation or ID do you need to fly to Oslo?
The travel and health documents you'll need for your trip to Oslo may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Oslo. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Seattle to Oslo

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

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $353	Free Cancellation	Rating 6.7 7,705 reviews	Search British Airways flights
Icelandair	PriceFrom $399	Free Cancellation	Rating 7.1 606 reviews	Search Icelandair flights
Delta	PriceFrom $468	Free Cancellation	Rating 7.9 8,128 reviews	Search Delta flights
American Airlines	PriceFrom $488	Free Cancellation	Rating 7.2 11,206 reviews	Search American Airlines flights
Finnair	PriceFrom $491	Free Cancellation	Rating 7.6 1,356 reviews	Search Finnair flights
Scandinavian Airlines	PriceFrom $492	Free Cancellation	Rating 7.3 1,674 reviews	Search Scandinavian Airlines flights
United Airlines	PriceFrom $518	Free Cancellation	Rating 7.4 9,214 reviews	Search United Airlines flights
KLM	PriceFrom $524	Free Cancellation	Rating 7.7 1,443 reviews	Search KLM flights
Air France	PriceFrom $526	Free Cancellation	Rating 7.4 1,528 reviews	Search Air France flights
Lufthansa	PriceFrom $538	Free Cancellation	Rating 6.8 7,754 reviews	Search Lufthansa flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Oslo from Seattle.

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

Yes. momondo enables you to select and highlight flights to Oslo from Seattle with this policy.

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

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

Yes. momondo can track prices for Seattle to Oslo flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.