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Tromsø

$758+ 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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — TOS
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$758
(oojo)

Popular in

December

Cheapest in

January

Average price

$958
From Seattle/Tacoma Intl to Tromso/Langnes
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($46 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 30, 2025.

This oojo deal was found by Cheapflights users on 7/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/134:00 pmSEA - TOS
2 stops33h 45mScandinavian Airlines
Tue 8/266:50 pmTOS - SEA
2 stops28h 00mScandinavian Airlines
Deal found 7/29$758
This Lufthansa deal was found by Cheapflights users on 7/30. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/233:10 pmSEA - TOS
2 stops23h 35mMultiple Airlines
Sat 11/297:15 pmTOS - SEA
2 stops27h 05mMultiple Airlines
Deal found 7/30$954
This British Airways deal was found by Cheapflights users on 7/29. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/137:50 pmSEA - TOS
2 stops55h 40mBritish Airways
Sat 12/201:30 pmTOS - SEA
2 stops42h 36mBritish Airways
Deal found 7/29$965
This Finnair deal was found by Cheapflights users on 7/27. 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.
Sat 12/137:42 amSEA - TOS
3 stops40h 58mFinnair
Sat 12/2010:25 amTOS - SEA
3 stops41h 35mFinnair
Deal found 7/27$1,041
This Ovago deal was found by Cheapflights users on 7/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/132:00 pmSEA - TOS
2 stops39h 15mLufthansa
Sat 12/201:25 pmTOS - SEA
1 stop32h 55mLufthansa
Deal found 7/28$1,279
This KLM deal was found by Cheapflights users on 7/29. 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.
Sun 11/231:55 pmSEA - TOS
2 stops20h 35mAir France
Sat 11/292:50 pmTOS - SEA
1 stop31h 25mAir France
Deal found 7/29$1,837

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 July 30, 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

Wed 8/13

4:00 pm-10:45 am

2 stops33h 45m

Tromso/Langnes

Tue 8/26

6:50 pm-1:50 pm

2 stops28h 00m

$758

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Sat 9/13

4:20 pm-9:50 am

2 stops32h 30m

Tromso/Langnes

Sat 9/20

8:20 pm-11:55 am

2 stops24h 35m

$1,013

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Wed 10/22

1:30 pm-6:15 pm

2 stops43h 45m

Tromso/Langnes

Wed 10/29

10:15 am-8:35 pm

3 stops42h 20m

$3,557

SeattleTromsø

SEA - TOS

SEATOS

Seattle/Tacoma Intl

Tue 10/21

2:20 pm-2:15 pm

1 stop14h 55m

Tromso/Langnes

Wed 10/29

3:45 pm-1:10 pm

1 stop29h 25m

$4,068

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 July 30, 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 July 30, 2025.
See what other customers who have flown with Finnair, Scandinavian Airlines, and Lufthansa 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.
Finnair
7.6
Good
1,316 reviews

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Comfort

7.5

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(
Finnair
7.6
Good
1,316 reviews
Finnair
7.6
Good
1,316 reviews

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Comfort

7.5

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(
Scandinavian Airlines
7.3
Good
1,453 reviews
Finnair
7.6
Good
1,316 reviews

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Comfort

7.5

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(
Lufthansa
6.8
Okay
7,269 reviews
Finnair
7.6
Good
1,316 reviews

Boarding

7.6

Crew

8.1

Food

6.7

Overall

7.6

Comfort

7.5

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Matt,May 2025

LHR - MIA

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(

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.

  • What are the cheapest airlines flying 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 $758 on this airline. Additional options worth looking into are Finnair and Lufthansa, starting at $3,557 and $4,068 round-trip.

  • 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

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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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$568Average$871FlexibilityNo cancel feeOn-time77%

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