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 many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Trondheim Vaernes Airport?

As of August 2026, there is 1 operator available to choose from for flights from Seattle/Tacoma Intl Airport to Trondheim Vaernes Airport.

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.

$576 Cheap Flights from Seattle to Trondheim in 2026

Discover deals from 900+ travel sites with momondo.

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.

3:55 pm - 7:25 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

18h 30m2 stops Kastrup Copenhagen Oslo Gardermoen

9:00 pm - 1:45 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

25h 45m2 stops Oslo Gardermoen Kastrup Copenhagen

$576Scandinavian Airlines

Sun, Sep 27 - Thu, Oct 1

3:55 pm - 8:00 amSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

31h 05m2 stops Kastrup Copenhagen Bergen Flesland

7:45 pm - 1:45 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

27h 00m1 stop Kastrup Copenhagen

$578Scandinavian Airlines

Sun, Sep 27 - Thu, Oct 1

3:55 pm - 12:35 amSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

23h 40m1 stop Kastrup Copenhagen

7:45 pm - 1:45 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

27h 00m1 stop Kastrup Copenhagen

$583Scandinavian Airlines

Sun, Sep 27 - Thu, Oct 1

5:45 pm - 10:50 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

20h 05m1 stop Amsterdam Schiphol

5:10 pm - 4:35 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

32h 25m1 stop Amsterdam Schiphol

$631KLM

Sun, Sep 27 - Thu, Oct 1

2:20 pm - 4:35 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

17h 15m1 stop Amsterdam Schiphol

6:20 am - 11:47 amTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

14h 27m1 stop Amsterdam Schiphol

$633Delta

Wed, Feb 3 - Wed, Feb 17

11:45 am - 4:35 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

19h 50m2 stops Detroit Metropolitan Wayne County Amsterdam Schiphol

6:20 am - 11:47 amTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

14h 27m1 stop Amsterdam Schiphol

$637Delta

Wed, Feb 3 - Wed, Feb 17

9:30 am - 4:35 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

22h 05m2 stops Los Angeles Los Angeles Amsterdam Schiphol

6:20 am - 6:30 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

21h 10m2 stops Amsterdam Schiphol Salt Lake City

$647Delta

Wed, Feb 3 - Wed, Feb 17

7:20 am - 9:40 amSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

17h 20m2 stops Boston Logan Intl Kastrup Copenhagen

7:15 am - 7:05 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

20h 50m3 stops Oslo Gardermoen Kastrup Copenhagen San Francisco

$794Scandinavian Airlines

Wed, Feb 3 - Wed, Feb 17

2:30 pm - 8:30 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

21h 00m3 stops Los Angeles Los Angeles Kastrup Copenhagen Oslo Gardermoen

7:45 am - 7:05 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

20h 20m3 stops Oslo Gardermoen Kastrup Copenhagen San Francisco

$800Scandinavian Airlines

Wed, Feb 3 - Wed, Feb 17

2:30 pm - 12:40 amSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

25h 10m2 stops Los Angeles Los Angeles Kastrup Copenhagen

3:05 pm - 7:05 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

37h 00m2 stops Kastrup Copenhagen San Francisco

$804Scandinavian Airlines

Wed, Jan 20 - Sun, Jan 24

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Scandinavian Airlines flights from Seattle to Trondheim

Our best Scandinavian Airlines deals on Seattle to Trondheim flight tickets

Scandinavian Airlines

Sep 27

SEA3:55 pmSeattle/Tacoma Intl

18h 30m

2 stops

TRD7:25 pmTrondheim Vaernes

Oct 1

TRD9:00 pmTrondheim Vaernes

25h 45m

2 stops

SEA1:45 pmSeattle/Tacoma Intl

$576

Scandinavian Airlines

Sep 27

SEA3:55 pmSeattle/Tacoma Intl

31h 05m

2 stops

TRD8:00 amTrondheim Vaernes

Oct 1

TRD7:45 pmTrondheim Vaernes

27h 00m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$578

Scandinavian Airlines

Sep 27

SEA3:55 pmSeattle/Tacoma Intl

23h 40m

1 stop

TRD12:35 amTrondheim Vaernes

Oct 1

TRD7:45 pmTrondheim Vaernes

27h 00m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$583

Delta flights from Seattle to Trondheim

Our best Delta deals on Seattle to Trondheim flight tickets

Delta

Feb 3

SEA2:20 pmSeattle/Tacoma Intl

17h 15m

1 stop

TRD4:35 pmTrondheim Vaernes

Feb 17

TRD6:20 amTrondheim Vaernes

14h 27m

1 stop

SEA11:47 amSeattle/Tacoma Intl

$633

Delta

Feb 3

SEA11:45 amSeattle/Tacoma Intl

19h 50m

2 stops

TRD4:35 pmTrondheim Vaernes

Feb 17

TRD6:20 amTrondheim Vaernes

14h 27m

1 stop

SEA11:47 amSeattle/Tacoma Intl

$637

Delta

Feb 3

SEA9:30 amSeattle/Tacoma Intl

22h 05m

2 stops

TRD4:35 pmTrondheim Vaernes

Feb 17

TRD6:20 amTrondheim Vaernes

21h 10m

2 stops

SEA6:30 pmSeattle/Tacoma Intl

$647

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Sun 9/27

3:55 pm-7:25 pm

2 stops18h 30m

Trondheim Vaernes

Thu 10/1

9:00 pm-1:45 pm

2 stops25h 45m

$576

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Sun 9/27

3:55 pm-8:00 am

2 stops31h 05m

Trondheim Vaernes

Thu 10/1

7:45 pm-1:45 pm

1 stop27h 00m

$578

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Sun 9/27

3:55 pm-12:35 am

1 stop23h 40m

Trondheim Vaernes

Thu 10/1

7:45 pm-1:45 pm

1 stop27h 00m

$583

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Sun 9/27

5:45 pm-10:50 pm

1 stop20h 05m

Trondheim Vaernes

Thu 10/1

5:10 pm-4:35 pm

1 stop32h 25m

$631

Quickest round-trip

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Wed 2/3

2:20 pm-4:35 pm

1 stop17h 15m

Trondheim Vaernes

Wed 2/17

6:20 am-11:47 am

1 stop14h 27m

$633

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Wed 2/3

11:45 am-4:35 pm

2 stops19h 50m

Trondheim Vaernes

Wed 2/17

6:20 am-11:47 am

1 stop14h 27m

$637

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Wed 2/3

9:30 am-4:35 pm

2 stops22h 05m

Trondheim Vaernes

Wed 2/17

6:20 am-6:30 pm

2 stops21h 10m

$647

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Wed 2/3

7:20 am-9:40 am

2 stops17h 20m

Trondheim Vaernes

Wed 2/17

7:15 am-7:05 pm

3 stops20h 50m

$794

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Wed 2/3

2:30 pm-8:30 pm

3 stops21h 00m

Trondheim Vaernes

Wed 2/17

7:45 am-7:05 pm

3 stops20h 20m

$800

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Wed 1/20

2:30 pm-12:40 am

2 stops25h 10m

Trondheim Vaernes

Sun 1/24

3:05 pm-7:05 pm

2 stops37h 00m

$804

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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

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

KLM is the most popular carrier operating from Seattle/Tacoma Intl to Trondheim Vaernes

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

Best Price Found	$838
Fastest flight time	17h 05m
Direct flights	None

The best one-way flight to Trondheim from Seattle in the past 72 hours is $838. The best round-trip flight deal from Seattle to Trondheim found on momondo in the last 72 hours is $576.

The fastest flight from Seattle to Trondheim takes 17h 05m

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

Search flight deals

Frequently asked questions about flying from Seattle to Trondheim

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 17h 05m, 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 many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Trondheim Vaernes Airport?
As of August 2026, there is 1 operator available to choose from for flights from Seattle/Tacoma Intl Airport to Trondheim Vaernes Airport.
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.
What is the most popular airline from Seattle to Trondheim?
Based on momondo bookings for flights between Seattle and Trondheim, the leading airline is KLM, making up 100% of the total bookings.

Best airlines flying from Seattle to Trondheim

Compare and see reviews for airlines that fly from Seattle to Trondheim with momondo

Airline	Rating	Free Cancellation	Price
KLM	PriceFrom $510	Free Cancellation	Rating 7.8 1,560 reviews		Search KLM flights

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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.

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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.