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

KLM is the most popular carrier operating from Seattle/Tacoma Intl to Tromso/Langnes

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

Prices for flights from Seattle/Tacoma Intl Airport to Tromso/Langnes Airport were last updated today.

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

As of September 2026, there is 1 operator available to choose from for flights from Seattle/Tacoma Intl Airport to Tromso/Langnes Airport.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Tromso/Langnes 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 Seattle/Tacoma Intl Airport to Tromso/Langnes Airport.

What documentation or ID do you need to fly to Tromso/Langnes Airport?

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

$327 Cheap Flights from Seattle to Tromsø in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Tromsø

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:30 pm - 11:25 amSEA Seattle/Tacoma Intl-TOS Tromso/Langnes

36h 55m2 stops Los Angeles Kastrup Copenhagen

7:50 pm - 9:58 pmTOS Tromso/Langnes-SEA Seattle/Tacoma Intl

35h 08m2 stops Kastrup Copenhagen Los Angeles

$687Scandinavian Airlines

Mon, Oct 26 - Thu, Nov 5

7:38 am - 2:10 pmSEA Seattle/Tacoma Intl-TOS Tromso/Langnes

21h 32m2 stops Boston Logan Intl Paris Charles de Gaulle

9:45 am - 11:50 amTOS Tromso/Langnes-SEA Seattle/Tacoma Intl

35h 05m1 stop Amsterdam Schiphol

$698Multiple Airlines

Mon, Dec 14 - Thu, Dec 24

11:10 pm - 11:20 amSEA Seattle/Tacoma Intl-TOS Tromso/Langnes

27h 10m2 stops Boston Logan Intl Kastrup Copenhagen

7:30 pm - 11:53 pmTOS Tromso/Langnes-SEA Seattle/Tacoma Intl

37h 23m2 stops Kastrup Copenhagen Los Angeles

$717Scandinavian Airlines

Sat, Nov 7 - Sat, Nov 14

7:15 am - 11:25 amSEA Seattle/Tacoma Intl-TOS Tromso/Langnes

19h 10m2 stops New York John F Kennedy Intl Kastrup Copenhagen

8:45 am - 10:04 pmTOS Tromso/Langnes-SEA Seattle/Tacoma Intl

22h 19m3 stops Oslo Gardermoen Kastrup Copenhagen Los Angeles

$721Scandinavian Airlines

Mon, Nov 9 - Mon, Nov 16

7:20 am - 11:25 amSEA Seattle/Tacoma Intl-TOS Tromso/Langnes

43h 05m2 stops Chicago O'Hare Intl Kastrup Copenhagen

7:30 pm - 9:42 pmTOS Tromso/Langnes-SEA Seattle/Tacoma Intl

35h 12m2 stops Kastrup Copenhagen Boston Logan Intl

$744Scandinavian Airlines

Mon, Dec 14 - Thu, Dec 24

7:20 am - 11:15 amSEA Seattle/Tacoma Intl-TOS Tromso/Langnes

42h 55m2 stops Chicago O'Hare Intl Kastrup Copenhagen

7:30 pm - 9:42 pmTOS Tromso/Langnes-SEA Seattle/Tacoma Intl

35h 12m2 stops Kastrup Copenhagen Boston Logan Intl

$745Scandinavian Airlines

Mon, Dec 14 - Thu, Dec 24

7:38 am - 2:10 pmSEA Seattle/Tacoma Intl-TOS Tromso/Langnes

21h 32m2 stops Boston Logan Intl Paris Charles de Gaulle

9:45 am - 11:50 amTOS Tromso/Langnes-SEA Seattle/Tacoma Intl

35h 05m1 stop Amsterdam Schiphol

$760Multiple Airlines

Mon, Dec 14 - Thu, Dec 24

7:20 am - 11:15 amSEA Seattle/Tacoma Intl-TOS Tromso/Langnes

42h 55m2 stops Chicago O'Hare Intl Kastrup Copenhagen

7:30 pm - 10:26 pmTOS Tromso/Langnes-SEA Seattle/Tacoma Intl

35h 56m2 stops Kastrup Copenhagen San Francisco

$771Scandinavian Airlines

Mon, Feb 1 - Thu, Feb 4

2:40 pm - 8:10 amSEA Seattle/Tacoma Intl-TOS Tromso/Langnes

33h 30m2 stops London Heathrow Helsinki-Vantaa

8:55 am - 12:35 amTOS Tromso/Langnes-SEA Seattle/Tacoma Intl

23h 40m2 stops Helsinki-Vantaa Chicago O'Hare Intl

$795Finnair

Thu, Mar 18 - Sat, Mar 27

7:45 pm - 9:40 amSEA Seattle/Tacoma Intl-TOS Tromso/Langnes

29h 55m3 stops London Heathrow Helsinki-Vantaa Rovaniemi

8:55 am - 12:35 amTOS Tromso/Langnes-SEA Seattle/Tacoma Intl

23h 40m2 stops Helsinki-Vantaa Chicago O'Hare Intl

$795Finnair

Thu, Mar 18 - Sat, Mar 27

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Scandinavian Airlines flights from Seattle to Tromsø

Our best Scandinavian Airlines deals on Seattle to Tromsø flight tickets

Scandinavian Airlines

Oct 26

SEA2:30 pmSeattle/Tacoma Intl

36h 55m

2 stops

TOS11:25 amTromso/Langnes

Nov 5

TOS7:50 pmTromso/Langnes

35h 08m

2 stops

SEA9:58 pmSeattle/Tacoma Intl

$687

Scandinavian Airlines

Nov 7

SEA11:10 pmSeattle/Tacoma Intl

27h 10m

2 stops

TOS11:20 amTromso/Langnes

Nov 14

TOS7:30 pmTromso/Langnes

37h 23m

2 stops

SEA11:53 pmSeattle/Tacoma Intl

$717

Scandinavian Airlines

Nov 9

SEA7:15 amSeattle/Tacoma Intl

19h 10m

2 stops

TOS11:25 amTromso/Langnes

Nov 16

TOS8:45 amTromso/Langnes

22h 19m

3 stops

SEA10:04 pmSeattle/Tacoma Intl

$721

Finnair flights from Seattle to Tromsø

Our best Finnair deals on Seattle to Tromsø flight tickets

Finnair

Mar 18

SEA2:40 pmSeattle/Tacoma Intl

33h 30m

2 stops

TOS8:10 amTromso/Langnes

Mar 27

TOS8:55 amTromso/Langnes

23h 40m

2 stops

SEA12:35 amSeattle/Tacoma Intl

$795

Finnair

Feb 1

SEA6:45 pmSeattle/Tacoma Intl

30h 00m

3 stops

TOS9:45 amTromso/Langnes

Feb 4

TOS6:30 pmTromso/Langnes

37h 30m

2 stops

SEA11:00 pmSeattle/Tacoma Intl

$1,057

Finnair

Feb 1

SEA6:45 pmSeattle/Tacoma Intl

30h 00m

3 stops

TOS9:45 amTromso/Langnes

Feb 4

TOS6:30 pmTromso/Langnes

37h 30m

2 stops

SEA11:00 pmSeattle/Tacoma Intl

$1,058

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleTromsø

SEA Seattle/Tacoma Intl - TOS Tromso/Langnes

SEATOS

Seattle/Tacoma Intl

Mon 10/26

2:30 pm-11:25 am

2 stops36h 55m

Tromso/Langnes

Thu 11/5

7:50 pm-9:58 pm

2 stops35h 08m

$687

SeattleTromsø

SEA Seattle/Tacoma Intl - TOS Tromso/Langnes

SEATOS

Seattle/Tacoma Intl

Mon 12/14

7:38 am-2:10 pm

2 stops21h 32m

Tromso/Langnes

Thu 12/24

9:45 am-11:50 am

1 stop35h 05m

$698

SeattleTromsø

SEA Seattle/Tacoma Intl - TOS Tromso/Langnes

SEATOS

Seattle/Tacoma Intl

Sat 11/7

11:10 pm-11:20 am

2 stops27h 10m

Tromso/Langnes

Sat 11/14

7:30 pm-11:53 pm

2 stops37h 23m

$717

Quickest round-trip

SeattleTromsø

SEA Seattle/Tacoma Intl - TOS Tromso/Langnes

SEATOS

Seattle/Tacoma Intl

Mon 11/9

7:15 am-11:25 am

2 stops19h 10m

Tromso/Langnes

Mon 11/16

8:45 am-10:04 pm

3 stops22h 19m

$721

SeattleTromsø

SEA Seattle/Tacoma Intl - TOS Tromso/Langnes

SEATOS

Seattle/Tacoma Intl

Mon 12/14

7:20 am-11:25 am

2 stops43h 05m

Tromso/Langnes

Thu 12/24

7:30 pm-9:42 pm

2 stops35h 12m

$744

SeattleTromsø

SEA Seattle/Tacoma Intl - TOS Tromso/Langnes

SEATOS

Seattle/Tacoma Intl

Mon 12/14

7:20 am-11:15 am

2 stops42h 55m

Tromso/Langnes

Thu 12/24

7:30 pm-9:42 pm

2 stops35h 12m

$745

SeattleTromsø

SEA Seattle/Tacoma Intl - TOS Tromso/Langnes

SEATOS

Seattle/Tacoma Intl

Mon 12/14

7:38 am-2:10 pm

2 stops21h 32m

Tromso/Langnes

Thu 12/24

9:45 am-11:50 am

1 stop35h 05m

$760

SeattleTromsø

SEA Seattle/Tacoma Intl - TOS Tromso/Langnes

SEATOS

Seattle/Tacoma Intl

Mon 2/1

7:20 am-11:15 am

2 stops42h 55m

Tromso/Langnes

Thu 2/4

7:30 pm-10:26 pm

2 stops35h 56m

$771

SeattleTromsø

SEA Seattle/Tacoma Intl - TOS Tromso/Langnes

SEATOS

Seattle/Tacoma Intl

Thu 3/18

2:40 pm-8:10 am

2 stops33h 30m

Tromso/Langnes

Sat 3/27

8:55 am-12:35 am

2 stops23h 40m

$795

SeattleTromsø

SEA Seattle/Tacoma Intl - TOS Tromso/Langnes

SEATOS

Seattle/Tacoma Intl

Thu 3/18

7:45 pm-9:40 am

3 stops29h 55m

Tromso/Langnes

Sat 3/27

8:55 am-12:35 am

2 stops23h 40m

$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 Tromsø

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

Can stopping save me money on Seattle to Tromsø flights?

You could potentially save up to 3% on your flight if you consider stops on a Seattle to Tromsø flight.

When to book flights from Seattle to Tromsø

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Tromsø according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to Tromsø (SEA to TOS) flight deals and tips

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

Best Price Found	$327
Fastest flight time	21h 32m
Direct flights	None

The best one-way flight to Tromsø from Seattle in the past 72 hours is $327. The best round-trip flight deal from Seattle to Tromsø found on momondo in the last 72 hours is $687.

The fastest flight from Seattle to Tromsø takes 21h 32m

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

Search flight deals

Frequently asked questions about flying from Seattle to Tromsø

How far is Seattle/Tacoma Intl to Tromso/Langnes by plane?
Tromso/Langnes is 4098.9 mi away from Seattle/Tacoma Intl. By plane, this route typically takes 21h 32m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Tromso/Langnes Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Tromso/Langnes Airport were last updated today.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Tromso/Langnes Airport?
As of September 2026, there is 1 operator available to choose from for flights from Seattle/Tacoma Intl Airport to Tromso/Langnes Airport.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Tromso/Langnes 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 Seattle/Tacoma Intl Airport to Tromso/Langnes Airport.
What documentation or ID do you need to fly to Tromso/Langnes Airport?
The required travel and health documents for your Tromso/Langnes 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 Tromso/Langnes Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Seattle to Tromsø?
momondo data reveals that the most frequently booked airline on the route from Seattle to Tromsø is Scandinavian Airlines, representing 100% of all bookings.

Best airlines flying from Seattle to Tromsø

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

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom $522	Free Cancellation	Rating 7.4 1,998 reviews		Search Scandinavian Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Tromsø for you.

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

Yes. All flights to Tromsø from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Tromsø from Seattle.

I’m not ready to book a flight from Seattle to Tromsø right now. Can momondo alert me if prices change?

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