SEA - TOS

$837 Find Cheap Flights from Seattle to Tromsø

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Tromsø departing on 4/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Tromsø

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Tromsø, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Tromsø, as well as popular online travel agencies
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$704
Overall average: $1,031
Multiple Airlines
Sat 4/25Sun 5/10
SEA - TOS • 2 stops
Cheapest one-way
$837
Finnair
Wed 7/22
SEA - TOS • 2 stops
Top airlines
Lufthansa
Cheapest • from $735 (round-trip)
Scandinavian Airlines
Best reviews • 7.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
October
Cheapest • 24% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Tromsø!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Tromsø (SEA-TOS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Tromsø that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Tromsø

Sat, Apr 25 - Sun, May 10
Multiple Airlines Logo
7:00 pm - 11:45 pm
SEA
-
TOS
19h 45m
2 stops
Multiple Airlines Logo
7:20 am - 8:40 pm
TOS
-
SEA
22h 20m
2 stops
$704Multiple Airlines
Sat, Apr 25 - Sun, May 10
Lufthansa Logo
2:10 pm - 2:35 pm
SEA
-
TOS
15h 25m
1 stop
Lufthansa Logo
3:25 pm - 6:30 pm
TOS
-
SEA
36h 05m
2 stops
$735Lufthansa
Sat, Apr 25 - Sun, May 10
Lufthansa Logo
2:10 pm - 2:35 pm
SEA
-
TOS
15h 25m
1 stop
Lufthansa Logo
3:25 pm - 12:20 pm
TOS
-
SEA
29h 55m
1 stop
$740Lufthansa
Sat, Apr 25 - Sun, May 10
Multiple Airlines Logo
1:35 pm - 6:15 pm
SEA
-
TOS
19h 40m
2 stops
Multiple Airlines Logo
10:30 am - 11:39 pm
TOS
-
SEA
22h 09m
3 stops
$809Multiple Airlines
Tue, May 12 - Fri, May 15
Lufthansa Logo
2:10 pm - 2:30 pm
SEA
-
TOS
15h 20m
1 stop
Lufthansa Logo
3:15 pm - 6:30 pm
TOS
-
SEA
36h 15m
2 stops
$841Lufthansa
Wed, Jul 15 - Tue, Sep 15
Multiple Airlines Logo
8:20 pm - 6:15 pm
SEA
-
TOS
36h 55m
2 stops
Multiple Airlines Logo
10:30 am - 9:20 am
TOS
-
SEA
31h 50m
3 stops
$863Multiple Airlines
Wed, Jul 15 - Tue, Sep 15
Scandinavian Airlines Logo
7:20 am - 11:25 am
SEA
-
TOS
19h 05m
2 stops
Scandinavian Airlines Logo
5:30 pm - 10:16 pm
TOS
-
SEA
37h 46m
2 stops
$866Scandinavian Airlines
Tue, May 12 - Fri, May 15
Air France Logo
1:30 pm - 5:05 pm
SEA
-
TOS
18h 35m
2 stops
Air France Logo
3:00 pm - 11:15 am
TOS
-
SEA
29h 15m
2 stops
$885Air France
Tue, May 12 - Fri, May 15
Lufthansa Logo
2:10 pm - 2:30 pm
SEA
-
TOS
15h 20m
1 stop
Lufthansa Logo
3:15 pm - 12:20 pm
TOS
-
SEA
30h 05m
1 stop
$907Lufthansa
Sat, Apr 25 - Sun, May 10
Multiple Airlines Logo
7:00 pm - 10:15 am
SEA
-
TOS
30h 15m
3 stops
Multiple Airlines Logo
7:20 am - 8:40 pm
TOS
-
SEA
22h 20m
3 stops
$957Multiple Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Tromsø flights

Get data-powered insights and trends into flights from Seattle to Tromsø to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Seattle to Tromsø?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Tromsø, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Tromsø is October, where tickets cost $552 (return) on average. On the other hand, the most expensive months are April and June, where the average cost of round-trip tickets is $1,031 and $1,014 respectively.

Find deals

Good to know

Low seasonAugust
Cheapest flight$704
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 31% increase in price.
Flight from Seattle to Tromsø

When to book flights from Seattle to Tromsø

Are your dates flexible? Find out the best times to travel from Seattle to Tromsø based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Tromsø

  • What is the cheapest flight from Seattle to Tromsø?

    In the last 3 days, the lowest price for a flight from Seattle to Tromsø was $704 for a round-trip ticket.

  • Do I need a passport to fly between Seattle and Tromsø?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Seattle and on arrival in Tromsø.

  • Which airports will I be using when flying from Seattle to Tromsø?

    Seattle and Tromsø are both served by 1 main airport. You will leave Seattle from Seattle/Tacoma Intl and will be arriving at Tromso/Langnes.

  • Which aircraft models fly most regularly from Seattle to Tromsø?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Tromsø?

    SkyTeam is the only airline alliance operating flights between Seattle and Tromsø.

  • How does KAYAK find such low prices on flights from Seattle to Tromsø?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Tromsø.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Tromsø?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Tromsø from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Tromsø?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Tromsø with an airline and back to Seattle with another airline. Booking your flights between Seattle and TOS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Tromsø?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Tromsø from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Seattle to Tromsø

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Tromsø. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Tromsø? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
Scandinavian AirlinesOverall score based on 1676 reviews
7.3Comfort
8.0Crew
6.6Entertainment
6.6Food
7.6Boarding
Airline reviews

Fantastic. The only thing - out of my six luggage one was lost in Copenhagen, however it was delivered Home 3 Days later so all great..

10.0 ExcellentAnonymous, Jan 2026
SFO - CPH
Read more Scandinavian Airlines reviews

Fantastic. The only thing - out of my six luggage one was lost in Copenhagen, however it was delivered Home 3 Days later so all great..

The crew was friendly, the flight was pleasant. Thank you for your service!

Our trip plan from Kayak stated we were flying SAS. That was not true. The first leg was a Delta flight. We wasted 25 minutes before finding out to check in with the correct airline. Then our SAS flight for the second leg arrived 25 minutes late, and our third leg flight with SAS closed the gate knowing the flight delay was SAS’s fault, and that this flight would only be backed up 5 minutes. The final kicker was that between Delta and SAS, they lost all our checked luggage.

Flight was completely full January 9th? I problem i had the stewardess was bumping into me constantly walking by? very annoying.. on Austrian air I dint have this issue at all...

Amazing! Everyone was so nice and the food was so good!!

Terrible customer service. The flight attendants were rude. We experienced significant turbulence for a large portion of the flight and there was very little check in from the flight deck. The space was extremely limited to the point where it felt like torture. Never again

I was surprised how good an American airline can be - I was really impressed.

Excellent service throughout. Airport process is quick and easy. Very courteous staff. Great service in the plane! Just outstanding punctuality and service overall!!

I have paid for extra legroom on my flight. My seat was broken and did not recline. The crew could not fix it and refused to provide me with another seat

Over all experience was good. However the connection time was too short at CPG. We missed our connecting flight to AMS as the passport control line was too long and by the time we got our passport control done it was too late I wish there were some SAS staff to help us out at the passport control center Though they put us in a KLM flight from CPG to AMS, That flight was also delayed by over two hours

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

Information on your arrival and departure airports

Seattle (SEA)
Tromsø (TOS)