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

KLM and Lufthansa are the most popular carriers 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 2025, 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 2025/26

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Find the cheapest flights from Seattle to Tromsø

Round-trip

One-way

Cheap round-trip flights

6:50 pm - 9:50 amSEA-TOS

30h 00m3 stops

10:15 am - 10:25 pmTOS-SEA

21h 10m2 stops

$516Finnair

Find Deal

mar., dic. 2 - mar., dic. 9

3:05 pm - 8:55 amSEA-TOS

32h 50m1 stop

2:50 pm - 1:25 pmTOS-SEA

31h 35m1 stop

$520KLM

Find Deal

mar., dic. 2 - mar., dic. 9

6:50 pm - 9:50 amSEA-TOS

30h 00m3 stops

9:20 am - 10:25 pmTOS-SEA

22h 05m3 stops

$583Finnair

Find Deal

mar., dic. 2 - mar., dic. 9

11:24 pm - 6:15 pmSEA-TOS

33h 51m2 stops

6:45 pm - 7:00 pmTOS-SEA

33h 15m2 stops

$588Multiple Airlines

Find Deal

lun., oct. 20 - mar., nov. 4

2:10 pm - 3:20 pmSEA-TOS

40h 10m2 stops

12:05 pm - 10:27 pmTOS-SEA

43h 22m2 stops

$624Scandinavian Airlines

Find Deal

lun., oct. 20 - mar., nov. 4

6:50 pm - 8:15 amSEA-TOS

28h 25m2 stops

8:55 am - 11:09 pmTOS-SEA

23h 14m2 stops

$638Multiple Airlines

Find Deal

jue., feb. 12 - mié., feb. 18

3:45 pm - 11:25 pmSEA-TOS

22h 40m2 stops

6:30 am - 5:50 pmTOS-SEA

20h 20m2 stops

$659Multiple Airlines

Find Deal

jue., oct. 16 - jue., oct. 23

6:35 pm - 4:05 pmSEA-TOS

36h 30m1 stop

6:30 am - 5:40 pmTOS-SEA

20h 10m2 stops

$779Air France

Find Deal

jue., oct. 16 - jue., oct. 23

7:19 am - 11:35 amSEA-TOS

19h 16m2 stops

11:40 am - 2:00 pmTOS-SEA

35h 20m3 stops

$803Scandinavian Airlines

Find Deal

jue., oct. 16 - jue., oct. 23

2:00 pm - 2:50 pmSEA-TOS

15h 50m1 stop

1:20 pm - 1:20 pmTOS-SEA

33h 00m1 stop

$1,359Lufthansa

Find Deal

sáb., dic. 13 - sáb., dic. 20

Finnair flights from Seattle to Tromsø

Our best Finnair deals on Seattle to Tromsø flight tickets

Finnair

Dec 2

SEA6:50 pmSeattle/Tacoma Intl

30h 00m

3 stops

TOS9:50 amTromso/Langnes

Dec 9

TOS10:15 amTromso/Langnes

21h 10m

2 stops

SEA10:25 pmSeattle/Tacoma Intl

$516

Find similar

Finnair

Dec 2

SEA6:50 pmSeattle/Tacoma Intl

30h 00m

3 stops

TOS9:50 amTromso/Langnes

Dec 9

TOS9:20 amTromso/Langnes

22h 05m

3 stops

SEA10:25 pmSeattle/Tacoma Intl

$583

Find similar

Finnair

Dec 2

SEA6:50 pmSeattle/Tacoma Intl

37h 55m

2 stops

TOS5:45 pmTromso/Langnes

Dec 9

TOS10:15 amTromso/Langnes

45h 56m

2 stops

SEA11:11 pmSeattle/Tacoma Intl

$762

Find similar

Scandinavian Airlines flights from Seattle to Tromsø

Our best Scandinavian Airlines deals on Seattle to Tromsø flight tickets

Scandinavian Airlines

Oct 20

SEA2:10 pmSeattle/Tacoma Intl

40h 10m

2 stops

TOS3:20 pmTromso/Langnes

Nov 4

TOS12:05 pmTromso/Langnes

43h 22m

2 stops

SEA10:27 pmSeattle/Tacoma Intl

$624

Find similar

Scandinavian Airlines

Sep 23

SEA6:00 amSeattle/Tacoma Intl

24h 20m

2 stops

TOS3:20 pmTromso/Langnes

Sep 30

TOS6:50 pmTromso/Langnes

28h 10m

2 stops

SEA2:00 pmSeattle/Tacoma Intl

$773

Find similar

Scandinavian Airlines

Oct 16

SEA7:19 amSeattle/Tacoma Intl

19h 16m

2 stops

TOS11:35 amTromso/Langnes

Oct 23

TOS11:40 amTromso/Langnes

35h 20m

3 stops

SEA2:00 pmSeattle/Tacoma Intl

$803

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

mar. 12/2

6:50 pm-9:50 am

3 stops30h 00m

Tromso/Langnes

mar. 12/9

10:15 am-10:25 pm

2 stops21h 10m

$516

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

mar. 12/2

3:05 pm-8:55 am

1 stop32h 50m

Tromso/Langnes

mar. 12/9

2:50 pm-1:25 pm

1 stop31h 35m

$520

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

mar. 12/2

6:50 pm-9:50 am

3 stops30h 00m

Tromso/Langnes

mar. 12/9

9:20 am-10:25 pm

3 stops22h 05m

$583

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

lun. 10/20

11:24 pm-6:15 pm

2 stops33h 51m

Tromso/Langnes

mar. 11/4

6:45 pm-7:00 pm

2 stops33h 15m

$588

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

lun. 10/20

2:10 pm-3:20 pm

2 stops40h 10m

Tromso/Langnes

mar. 11/4

12:05 pm-10:27 pm

2 stops43h 22m

$624

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

jue. 2/12

6:50 pm-8:15 am

2 stops28h 25m

Tromso/Langnes

mié. 2/18

8:55 am-11:09 pm

2 stops23h 14m

$638

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

jue. 10/16

3:45 pm-11:25 pm

2 stops22h 40m

Tromso/Langnes

jue. 10/23

6:30 am-5:50 pm

2 stops20h 20m

$659

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

jue. 10/16

6:35 pm-4:05 pm

1 stop36h 30m

Tromso/Langnes

jue. 10/23

6:30 am-5:40 pm

2 stops20h 10m

$779

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

jue. 10/16

7:19 am-11:35 am

2 stops19h 16m

Tromso/Langnes

jue. 10/23

11:40 am-2:00 pm

3 stops35h 20m

$803

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

sáb. 12/13

2:00 pm-2:50 pm

1 stop15h 50m

Tromso/Langnes

sáb. 12/20

1:20 pm-1:20 pm

1 stop33h 00m

$1,359

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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

What is the cheapest month to fly to Tromsø?

The month of January is, on average, the cheapest month to fly to Tromsø from Seattle, with most prices found around $552. If you aren’t able to travel during the month of January, then book flights to Tromsø from Seattle during October instead. Flights to Tromsø in October, while not as cheap as those in January, still average around $552.

What is the cheapest day to depart on your flight to Tromsø?

On average, the least expensive day to fly to Tromsø from Seattle is on a Monday. momondo users have found tickets for Monday departures for as low as $578. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $699.

What is the cheapest time of day to depart on your flight to Tromsø?

Our data shows that the cheapest Seattle to Tromsø flights are usually those with departure times at noon. Our users have found flights to Tromsø at noon for as low as $575. Flights in the afternoon are often more expensive with an average ticket price of $650.

Can stopping save me money on Seattle to Tromsø flights?

You could potentially save up to 15% 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

Direct flights	None

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

Search flight deals

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 14h 55m.
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 2025, 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 $531	Free Cancellation	Rating 7.4 1,486 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.