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Tromsø

$698+ Cheap flights from Seattle (SEA) to Tromsø (TOS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TOS
feb. 26 — mar. 51
jue. 2/26
jue. 3/5
1 adult, Economy
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Cheap flight deals from Seattle to Tromsø

Cheapest flights from Seattle to Tromsø
Explore the most affordable flight options available from Seattle to Tromsø. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 27, 2026.

This Finnair deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/125:40 pm
SEA
-
TOS
1 stop15h 35m
Multiple Airlines
vie. 5/156:50 pm
TOS
-
SEA
2 stops33h 42m
Multiple Airlines
Deal found 1/27$698
This Finnair deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/145:18 am
SEA
-
TOS
2 stops27h 42m
Multiple Airlines
jue. 12/246:45 pm
TOS
-
SEA
2 stops31h 10m
Multiple Airlines
Deal found 1/26$759
This Finnair deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/146:50 pm
SEA
-
TOS
3 stops29h 50m
Finnair
jue. 12/246:45 pm
TOS
-
SEA
2 stops31h 10m
Finnair
Deal found 1/26$798
This Trip.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/123:00 pm
SEA
-
TOS
2 stops22h 55m
Multiple Airlines
jue. 3/196:30 am
TOS
-
SEA
2 stops39h 50m
Multiple Airlines
Deal found 1/26$804
This FlightHub deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/122:10 pm
SEA
-
TOS
1 stop15h 20m
Lufthansa
vie. 5/153:15 pm
TOS
-
SEA
1 stop30h 05m
Lufthansa
Deal found 1/26$904
This Priceline deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/1212:50 pm
SEA
-
TOS
3 stops36h 35m
Finnair
jue. 3/196:30 pm
TOS
-
SEA
2 stops31h 25m
Finnair
Deal found 1/26$939

Find flight deals from Seattle to Tromsø

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Tromsø (TOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$698
(Finnair)

Popular in

April

Cheapest in

October

Average price

$559
Provider with most accurate pricing for Seattle/Tacoma Intl-Tromso/Langnes flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Tromso/Langnes flights.
Search Deals
From Seattle/Tacoma Intl to Tromso/Langnes
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($95 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Tromsø that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 27, 2026.
Use the filters below to find and compare flights from Seattle to Tromsø that are best for you.

Fly from

Seattle

Fly to

Tromsø

Route

Depart

Return

Price

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

jue. 3/12

3:00 pm-9:55 pm

2 stops22h 55m

Tromso/Langnes

jue. 3/19

6:30 am-2:20 pm

2 stops39h 50m

$804

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

jue. 3/12

12:50 pm-9:25 am

3 stops36h 35m

Tromso/Langnes

jue. 3/19

6:30 pm-5:55 pm

2 stops31h 25m

$939

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

mar. 3/17

3:35 pm-11:50 pm

3 stops24h 15m

Tromso/Langnes

vie. 3/27

6:00 am-6:00 pm

3 stops20h 00m

$1,055

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

mié. 2/11

7:00 am-2:35 pm

2 stops22h 35m

Tromso/Langnes

mié. 2/18

3:15 pm-12:10 pm

2 stops29h 55m

$1,121

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

jue. 2/12

10:55 am-10:10 am

2 stops38h 15m

Tromso/Langnes

jue. 2/19

10:50 am-11:30 pm

2 stops45h 40m

$1,172

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

mié. 2/11

4:55 pm-11:50 pm

3 stops21h 55m

Tromso/Langnes

mié. 2/18

7:20 pm-11:25 pm

2 stops37h 05m

$1,991

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Compare providers for flights from Seattle to Tromsø

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Tromsø in January.
ProviderPrice AccuracyTrust Score*
OvagoPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Tromsø flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Tromsø flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Tromsø flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Tromsø flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Tromsø flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Tromsø

Have a flexible travel schedule? Discover the best time to fly to Tromsø from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Tromsø

What is the cheapest month to book a flight from Seattle to Tromsø?

Currently, November is the cheapest month in which you can book a flight from Seattle to Tromsø (average of $493). Flying from Seattle to Tromsø in December is currently the most expensive (average of $866). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Tromsø

Get insights into the airlines that provide service to Tromsø. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Tromsø. Reviews last updated enero 27, 2026.
See what other customers who have flown with Scandinavian Airlines from Seattle to Tromsø have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Scandinavian Airlines
7.3
Good
1,669 reviews

Comfort

7.3

Boarding

7.6

Food

6.7

Entertainment

6.7

Crew

8.0

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jan 2026

SFO - CPH

It was very bad, my baggage didn’t arrive resulting in deep loss of money. My next flight to Zurich had to be cancelled, my hotel booking also had to be cancelled. I then had to book flight at Frankfurt airport to get my luggage. I won’t fly this airlines again unless there is no other choice. I highly won’t recommend it also
Scandinavian Airlines
7.3
Good
1,669 reviews
Scandinavian Airlines
7.3
Good
1,669 reviews

Comfort

7.3

Boarding

7.6

Food

6.7

Entertainment

6.7

Crew

8.0

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jan 2026

SFO - CPH

It was very bad, my baggage didn’t arrive resulting in deep loss of money. My next flight to Zurich had to be cancelled, my hotel booking also had to be cancelled. I then had to book flight at Frankfurt airport to get my luggage. I won’t fly this airlines again unless there is no other choice. I highly won’t recommend it also

Related info for your journey

Find useful and relevant information for your journey from Seattle to Tromsø. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Tromsø?

    A quick flight from Seattle to Tromsø can take about 36h 35m. Finnair provides one of the quickest options available for as low as $939. There are 4107 mi between Seattle and Tromsø.

  • What is the cheapest airline to fly from Seattle to Tromsø round-trip?

    Our cheapest airline available from Seattle to Tromsø is Scandinavian Airlines. Our recent data shows that you can find tickets from as low as $522 on this airline. Users have found that Scandinavian Airlines is 28% cheaper than the other options available to this destination.

  • Can I find deals for flights from Seattle to Tromsø that include hotel bookings?

    Yes. In addition to deals on Seattle to Tromsø flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Tromsø?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Tromsø.

  • Can I find deals for business class flights from Seattle to Tromsø?

    Yes. Cheapflights offers flight deals from Seattle to Tromsø by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Tromsø?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Tromsø (average of $493). Flying from Seattle to Tromsø in December is currently the most expensive (average of $866). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Seattle to Tromsø

Discover the top airline that operate flights from Seattle to Tromsø. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$522Average$867FlexibilityNo cancel feeOn-time77%

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