What is the cheapest airline that flies from Seattle/Tacoma Intl to Trondheim Vaernes?

KLM and Finnair are the most popular carriers operating from Seattle/Tacoma Intl to Trondheim Vaernes

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Trondheim Vaernes Airport?

Prices for flights from Seattle/Tacoma Intl Airport to Trondheim Vaernes Airport were last updated today.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Trondheim Vaernes Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Trondheim Vaernes Airport.

What documentation or ID do you need to fly to Trondheim Vaernes Airport?

The required travel and health documents for your Trondheim Vaernes Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Trondheim Vaernes Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$259 Cheap Flights from Seattle to Trondheim in 2026

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Find the cheapest flights from Seattle to Trondheim

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:00 pm - 11:25 am

SEA

TRD

31h 25m

2 stops

9:40 am - 6:05 pm

TRD

SEA

40h 25m

2 stops

$951Multiple Airlines

Fri, Mar 13 - Fri, Mar 20

4:05 pm - 4:35 pm

SEA

TRD

16h 30m

1 stop

6:15 am - 12:35 pm

TRD

SEA

14h 20m

1 stop

$1,150KLM

Fri, Mar 13 - Fri, Mar 20

4:05 pm - 10:55 pm

SEA

TRD

22h 50m

1 stop

6:15 am - 5:09 pm

TRD

SEA

18h 54m

2 stops

$1,160KLM

Fri, Mar 13 - Fri, Mar 20

4:10 pm - 9:40 am

SEA

TRD

33h 30m

3 stops

3:05 pm - 1:10 pm

TRD

SEA

30h 05m

3 stops

$1,187Multiple Airlines

Fri, Mar 13 - Fri, Mar 20

3:00 pm - 7:50 pm

SEA

TRD

20h 50m

2 stops

3:05 pm - 4:40 pm

TRD

SEA

33h 35m

3 stops

$1,416Multiple Airlines

Fri, Mar 13 - Fri, Mar 20

KLM flights from Seattle to Trondheim

Our best KLM deals on Seattle to Trondheim flight tickets

KLM

Mar 13

SEA4:05 pmSeattle/Tacoma Intl

16h 30m

1 stop

TRD4:35 pmTrondheim Vaernes

Mar 20

TRD6:15 amTrondheim Vaernes

14h 20m

1 stop

SEA12:35 pmSeattle/Tacoma Intl

$1,150

KLM

Mar 13

SEA4:05 pmSeattle/Tacoma Intl

22h 50m

1 stop

TRD10:55 pmTrondheim Vaernes

Mar 20

TRD6:15 amTrondheim Vaernes

18h 54m

2 stops

SEA5:09 pmSeattle/Tacoma Intl

$1,160

Fly from

Fly to

Route

Depart

Return

Price

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Fri 3/13

8:00 pm-11:25 am

2 stops31h 25m

Trondheim Vaernes

Fri 3/20

9:40 am-6:05 pm

2 stops40h 25m

$951

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Fri 3/13

4:05 pm-4:35 pm

1 stop16h 30m

Trondheim Vaernes

Fri 3/20

6:15 am-12:35 pm

1 stop14h 20m

$1,150

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Fri 3/13

4:05 pm-10:55 pm

1 stop22h 50m

Trondheim Vaernes

Fri 3/20

6:15 am-5:09 pm

2 stops18h 54m

$1,160

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Fri 3/13

4:10 pm-9:40 am

3 stops33h 30m

Trondheim Vaernes

Fri 3/20

3:05 pm-1:10 pm

3 stops30h 05m

$1,187

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Fri 3/13

3:00 pm-7:50 pm

2 stops20h 50m

Trondheim Vaernes

Fri 3/20

3:05 pm-4:40 pm

3 stops33h 35m

$1,416

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Wed 7/22

5:35 pm-4:35 pm

1 stop14h 00m

$259

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Tue 7/21

1:45 pm-4:35 pm

1 stop17h 50m

$263

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Tue 7/21

8:20 pm-8:20 am

2 stops27h 00m

$288

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Tue 7/21

5:40 pm-8:20 am

1 stop29h 40m

$297

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Mon 7/20

1:35 pm-10:40 pm

2 stops24h 05m

$351

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to Trondheim

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Can stopping save me money on Seattle to Trondheim flights?

You could potentially save up to 19% on your flight if you consider stops on a Seattle to Trondheim flight.

When to book flights from Seattle to Trondheim

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Trondheim according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to Trondheim (SEA to TRD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Trondheim

Fastest flight time	31h 25m
Direct flights	None

The fastest flight from Seattle to Trondheim takes 31h 25m

There are no direct flights from Seattle to Trondheim. There are no popular flight routes from Seattle to Trondheim.

Search flight deals

How far is Seattle/Tacoma Intl to Trondheim Vaernes by plane?
Trondheim Vaernes is 4341.0 mi away from Seattle/Tacoma Intl. Flights usually cover this in 31h 25m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Trondheim Vaernes Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Trondheim Vaernes Airport were last updated today.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Trondheim Vaernes Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Trondheim Vaernes Airport.
What documentation or ID do you need to fly to Trondheim Vaernes Airport?
The required travel and health documents for your Trondheim Vaernes Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Trondheim Vaernes Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Trondheim?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Trondheim for you.

Can I find flights from Seattle to Trondheim with flexible booking policies on momondo?

Flights from Seattle to Trondheim with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Trondheim?

Once all potential Seattle to Trondheim flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seattle to Trondheim right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Trondheim now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Trondheim and let you know when they change.