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Tromsø

$515+ 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TOS
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap 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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$487
(FlightHub)

Popular in

December

Cheapest in

October

Average price

$552
Provider with most accurate pricing for Seattle/Tacoma Intl-Tromso/Langnes flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Tromso/Langnes flights.
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From Seattle/Tacoma Intl to Tromso/Langnes
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Highest demand for flights based on searches. 2% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 29, 2025.

This Travelocity deal was found by Cheapflights users on 10/28. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/42:05 pmSEA - TOS
2 stops20h 30mScandinavian Airlines
Sun 12/1411:25 amTOS - SEA
2 stops40h 35mScandinavian Airlines
Deal found 10/28$521
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1311:55 pmSEA - TOS
2 stops28h 55mDelta
Sat 11/222:50 pmTOS - SEA
2 stops56h 58mDelta
Deal found 10/28$607
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/147:20 amSEA - TOS
2 stops21h 30mDelta
Sat 11/222:50 pmTOS - SEA
1 stop31h 30mDelta
Deal found 10/28$637
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/42:00 pmSEA - TOS
2 stops24h 45mMultiple Airlines
Sun 12/146:35 pmTOS - SEA
3 stops26h 35mMultiple Airlines
Deal found 10/28$690
This KAYAK deal was found by Cheapflights users on 10/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:40 amSEA - TOS
2 stops23h 55mScandinavian Airlines
Sun 11/2311:25 amTOS - SEA
2 stops45h 34mScandinavian Airlines
Deal found 10/28$761
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/142:00 pmSEA - TOS
1 stop15h 50mLufthansa
Sat 11/221:20 pmTOS - SEA
1 stop33h 00mLufthansa
Deal found 10/28$769
This Gurufare deal was found by Cheapflights users on 10/28. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/132:35 pmSEA - TOS
2 stops24h 10mMultiple Airlines
Mon 11/248:10 pmTOS - SEA
2 stops29h 50mMultiple Airlines
Deal found 10/28$800
This KAYAK deal was found by Cheapflights users on 10/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:10 amSEA - TOS
2 stops27h 25mScandinavian Airlines
Wed 11/267:20 pmTOS - SEA
2 stops36h 39mScandinavian Airlines
Deal found 10/28$811
This KAYAK deal was found by Cheapflights users on 10/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1511:15 amSEA - TOS
2 stops39h 05mScandinavian Airlines
Sun 11/2311:25 amTOS - SEA
2 stops45h 34mScandinavian Airlines
Deal found 10/28$826

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 October 29, 2025.
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

Sat 1/24

7:10 am-1:15 pm

3 stops21h 05m

Tromso/Langnes

Wed 1/28

7:20 pm-10:25 pm

2 stops36h 05m

$515

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Thu 2/26

10:55 am-7:35 pm

2 stops23h 40m

Tromso/Langnes

Sat 3/7

6:00 am-9:20 pm

3 stops24h 20m

$543

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Fri 2/27

7:20 am-6:20 pm

2 stops26h 00m

Tromso/Langnes

Sat 3/7

6:00 am-9:20 pm

3 stops24h 20m

$543

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Tue 2/24

7:20 am-6:40 pm

2 stops26h 20m

Tromso/Langnes

Sat 3/7

7:00 pm-9:16 pm

2 stops35h 16m

$557

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Fri 11/14

7:20 am-1:50 pm

2 stops21h 30m

Tromso/Langnes

Sat 11/22

2:50 pm-2:48 pm

2 stops56h 58m

$607

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Thu 11/13

11:55 pm-1:50 pm

2 stops28h 55m

Tromso/Langnes

Sat 11/22

2:50 pm-2:48 pm

2 stops56h 58m

$607

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Fri 2/27

1:35 pm-9:45 am

3 stops35h 10m

Tromso/Langnes

Sun 3/8

8:40 pm-9:10 pm

2 stops32h 30m

$631

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Fri 2/27

1:35 pm-9:45 am

3 stops35h 10m

Tromso/Langnes

Sun 3/8

8:40 pm-9:10 pm

2 stops32h 30m

$631

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Fri 2/27

6:50 pm-8:25 am

2 stops28h 35m

Tromso/Langnes

Sat 3/7

9:00 am-7:32 pm

2 stops19h 32m

$631

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Tromsø flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $943). 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.

What is the cheapest time of day to fly from SEA to TOS?

Find hourly flight availability from Seattle to Tromsø. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Tromsø at noon. If you’re flexible enough to do this you can expect to save up to 11% on your trip compared to booking a flight in the afternoon.

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 October 29, 2025.
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
7.4
Good
1,545 reviews

Boarding

7.6

Crew

8.0

Overall

7.4

Food

6.6

Entertainment

6.6

Comfort

7.3

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

ATL - CPH

I asked for wheelchair assistance. When I got to Copenhagen, there was none. Luckily I found a robot type wheelchair that got me to my next gate. In Dusseldorf, there was no help at all. On the return trip, SAS bumped me and sent me to another airline without provision to get to my final destination. I had to make other arrangement to get home which was VERY expensive. I do not understand them, they treat Americans like trash.
Scandinavian Airlines
7.4
Good
1,545 reviews
Scandinavian Airlines
7.4
Good
1,545 reviews

Boarding

7.6

Crew

8.0

Overall

7.4

Food

6.6

Entertainment

6.6

Comfort

7.3

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

ATL - CPH

I asked for wheelchair assistance. When I got to Copenhagen, there was none. Luckily I found a robot type wheelchair that got me to my next gate. In Dusseldorf, there was no help at all. On the return trip, SAS bumped me and sent me to another airline without provision to get to my final destination. I had to make other arrangement to get home which was VERY expensive. I do not understand them, they treat Americans like trash.

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 21h 05m. Scandinavian Airlines provides one of the quickest options available for as low as $515. There are 4107 mi between Seattle and Tromsø. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 29% 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 $943). 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$522Average$759FlexibilityNo cancel feeOn-time77%

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