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Tromsø

$518+ 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TOS
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
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 September 14, 2025.

Round-trip from

$518
(Expedia)

Popular in

December

Cheapest in

January

Average price

$564
From Seattle/Tacoma Intl to Tromso/Langnes
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Highest demand for flights based on searches. 2% potential increase in price ($16 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 September 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 September 14, 2025.

This Expedia deal was found by Cheapflights users on 9/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:25 amSEA - TOS
2 stops24h 10mScandinavian Airlines
Wed 11/57:20 pmTOS - SEA
2 stops36h 02mScandinavian Airlines
Deal found 9/14$518
This Expedia deal was found by Cheapflights users on 9/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/277:50 pmSEA - TOS
3 stops29h 40mMultiple Airlines
Mon 11/35:50 pmTOS - SEA
2 stops34h 10mMultiple Airlines
Deal found 9/12$611
This Finnair deal was found by Cheapflights users on 9/12. 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.
Mon 10/277:50 pmSEA - TOS
3 stops29h 40mFinnair
Mon 11/310:25 amTOS - SEA
3 stops34h 05mFinnair
Deal found 9/12$653
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/293:37 pmSEA - TOS
2 stops36h 38mMultiple Airlines
Wed 11/54:20 pmTOS - SEA
1 stop28h 50mMultiple Airlines
Deal found 9/14$656
This Finnair deal was found by Cheapflights users on 9/14. 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.
Mon 12/16:50 pmSEA - TOS
2 stops28h 20mFinnair
Sun 12/149:10 amTOS - SEA
2 stops22h 15mFinnair
Deal found 9/14$687
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/236:00 amSEA - TOS
2 stops24h 20mScandinavian Airlines
Tue 9/305:30 pmTOS - SEA
2 stops29h 30mScandinavian Airlines
Deal found 9/14$712
This KLM deal was found by Cheapflights users on 9/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/12:05 pmSEA - TOS
2 stops20h 25mMultiple Airlines
Sun 12/1410:05 amTOS - SEA
1 stop34h 45mMultiple Airlines
Deal found 9/14$785
This FlightHub deal was found by Cheapflights users on 9/12. 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.
Thu 10/97:19 amSEA - TOS
2 stops26h 01mScandinavian Airlines
Mon 10/136:50 pmTOS - SEA
2 stops52h 10mScandinavian Airlines
Deal found 9/12$797
This Ovago deal was found by Cheapflights users on 9/14. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/232:20 pmSEA - TOS
1 stop14h 55mLufthansa
Tue 9/303:15 pmTOS - SEA
1 stop29h 40mLufthansa
Deal found 9/14$821

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 September 14, 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

Mon 10/27

7:50 pm-9:30 am

3 stops29h 40m

Tromso/Langnes

Mon 11/3

10:25 am-11:30 am

3 stops34h 05m

$653

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Mon 12/1

6:50 pm-9:30 am

3 stops29h 40m

Tromso/Langnes

Sun 12/14

10:30 am-10:25 pm

3 stops20h 55m

$687

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Wed 10/29

10:25 am-6:35 pm

2 stops24h 10m

Tromso/Langnes

Wed 11/5

6:00 am-10:27 pm

3 stops25h 27m

$694

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Wed 10/29

10:32 am-9:40 am

3 stops39h 08m

Tromso/Langnes

Wed 11/5

10:15 am-10:25 am

3 stops33h 10m

$733

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Mon 12/1

2:05 pm-7:30 pm

2 stops20h 25m

Tromso/Langnes

Sun 12/14

10:05 am-11:50 am

1 stop34h 45m

$785

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Thu 3/5

6:50 pm-9:25 am

3 stops29h 35m

Tromso/Langnes

Mon 3/9

5:50 pm-12:11 am

2 stops38h 21m

$809

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Sat 12/13

7:10 am-11:20 am

2 stops43h 10m

Tromso/Langnes

Sat 12/20

7:15 pm-2:50 pm

2 stops52h 35m

$861

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

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 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 September 14, 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 12% 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 September 14, 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
1,484 reviews

Crew

8.0

Food

6.7

Entertainment

6.7

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

OSL - CPH

Good was ok. Complimentary wine and beer was nice. Soft drinks should have been free too. Overall great flight
Scandinavian Airlines
7.4
Good
1,484 reviews
Scandinavian Airlines
7.4
Good
1,484 reviews

Crew

8.0

Food

6.7

Entertainment

6.7

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

OSL - CPH

Good was ok. Complimentary wine and beer was nice. Soft drinks should have been free too. Overall great flight

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 24h 10m. Finnair provides one of the quickest options available for as low as $694. 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 $531 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.

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 September 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$531Average$843FlexibilityNo cancel feeOn-time77%

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