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

Delta, KLM, and Lufthansa 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.

$271 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

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9:55 pm - 4:35 pm

SEA

TRD

33h 40m

2 stops

5:40 am - 11:26 pm

TRD

SEA

26h 46m

2 stops

$621Delta

Sun, Aug 2 - Thu, Sep 3

5:45 pm - 10:50 pm

SEA

TRD

20h 05m

1 stop

6:00 am - 11:37 am

TRD

SEA

14h 37m

1 stop

$626KLM

Fri, Jun 5 - Wed, Jun 10

5:45 pm - 10:50 pm

SEA

TRD

20h 05m

1 stop

12:10 pm - 11:37 am

TRD

SEA

32h 27m

1 stop

$627KLM

Fri, Jun 5 - Wed, Jun 10

5:45 pm - 10:50 pm

SEA

TRD

20h 05m

1 stop

6:00 am - 3:59 pm

TRD

SEA

18h 59m

2 stops

$637KLM

Fri, Jun 5 - Wed, Jun 10

3:55 pm - 3:45 pm

SEA

TRD

14h 50m

2 stops

7:05 pm - 1:45 pm

TRD

SEA

51h 40m

2 stops

$686Scandinavian Airlines

Fri, Jun 5 - Wed, Jun 10

3:55 pm - 2:25 pm

SEA

TRD

13h 30m

1 stop

3:05 pm - 1:45 pm

TRD

SEA

31h 40m

1 stop

$697Scandinavian Airlines

Tue, Aug 4 - Thu, Sep 3

3:55 pm - 9:40 am

SEA

TRD

32h 45m

1 stop

7:45 pm - 1:45 pm

TRD

SEA

27h 00m

1 stop

$720Scandinavian Airlines

Sun, Aug 2 - Thu, Sep 3

3:55 pm - 2:25 pm

SEA

TRD

13h 30m

1 stop

9:00 pm - 1:45 pm

TRD

SEA

25h 45m

2 stops

$724Scandinavian Airlines

Tue, Aug 4 - Thu, Sep 3

3:55 pm - 8:20 pm

SEA

TRD

19h 25m

3 stops

3:05 pm - 1:45 pm

TRD

SEA

31h 40m

1 stop

$726Scandinavian Airlines

Tue, Aug 4 - Thu, Sep 3

3:55 pm - 8:20 pm

SEA

TRD

19h 25m

3 stops

3:50 pm - 1:45 pm

TRD

SEA

54h 55m

2 stops

$730Scandinavian Airlines

Tue, Aug 4 - Wed, Sep 2

Scandinavian Airlines flights from Seattle to Trondheim

Our best Scandinavian Airlines deals on Seattle to Trondheim flight tickets

Scandinavian Airlines

Jun 5

SEA3:55 pmSeattle/Tacoma Intl

14h 50m

2 stops

TRD3:45 pmTrondheim Vaernes

Jun 10

TRD7:05 pmTrondheim Vaernes

51h 40m

2 stops

SEA1:45 pmSeattle/Tacoma Intl

$686

Scandinavian Airlines

Aug 4

SEA3:55 pmSeattle/Tacoma Intl

13h 30m

1 stop

TRD2:25 pmTrondheim Vaernes

Sep 3

TRD3:05 pmTrondheim Vaernes

31h 40m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$697

Scandinavian Airlines

Aug 2

SEA3:55 pmSeattle/Tacoma Intl

32h 45m

1 stop

TRD9:40 amTrondheim Vaernes

Sep 3

TRD7:45 pmTrondheim Vaernes

27h 00m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$720

KLM flights from Seattle to Trondheim

Our best KLM deals on Seattle to Trondheim flight tickets

KLM

Jun 5

SEA5:45 pmSeattle/Tacoma Intl

20h 05m

1 stop

TRD10:50 pmTrondheim Vaernes

Jun 10

TRD6:00 amTrondheim Vaernes

14h 37m

1 stop

SEA11:37 amSeattle/Tacoma Intl

$626

KLM

Jun 5

SEA5:45 pmSeattle/Tacoma Intl

20h 05m

1 stop

TRD10:50 pmTrondheim Vaernes

Jun 10

TRD12:10 pmTrondheim Vaernes

32h 27m

1 stop

SEA11:37 amSeattle/Tacoma Intl

$627

KLM

Jun 5

SEA5:45 pmSeattle/Tacoma Intl

20h 05m

1 stop

TRD10:50 pmTrondheim Vaernes

Jun 10

TRD6:00 amTrondheim Vaernes

18h 59m

2 stops

SEA3:59 pmSeattle/Tacoma Intl

$637

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Sun 8/2

9:55 pm-4:35 pm

2 stops33h 40m

Trondheim Vaernes

Thu 9/3

5:40 am-11:26 pm

2 stops26h 46m

$621

Quickest round-trip

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Fri 6/5

5:45 pm-10:50 pm

1 stop20h 05m

Trondheim Vaernes

Wed 6/10

6:00 am-11:37 am

1 stop14h 37m

$626

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Fri 6/5

5:45 pm-10:50 pm

1 stop20h 05m

Trondheim Vaernes

Wed 6/10

12:10 pm-11:37 am

1 stop32h 27m

$627

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Fri 6/5

5:45 pm-10:50 pm

1 stop20h 05m

Trondheim Vaernes

Wed 6/10

6:00 am-3:59 pm

2 stops18h 59m

$637

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Fri 6/5

3:55 pm-3:45 pm

2 stops14h 50m

Trondheim Vaernes

Wed 6/10

7:05 pm-1:45 pm

2 stops51h 40m

$686

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Tue 8/4

3:55 pm-2:25 pm

1 stop13h 30m

Trondheim Vaernes

Thu 9/3

3:05 pm-1:45 pm

1 stop31h 40m

$697

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Sun 8/2

3:55 pm-9:40 am

1 stop32h 45m

Trondheim Vaernes

Thu 9/3

7:45 pm-1:45 pm

1 stop27h 00m

$720

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Tue 8/4

3:55 pm-2:25 pm

1 stop13h 30m

Trondheim Vaernes

Thu 9/3

9:00 pm-1:45 pm

2 stops25h 45m

$724

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Tue 8/4

3:55 pm-8:20 pm

3 stops19h 25m

Trondheim Vaernes

Thu 9/3

3:05 pm-1:45 pm

1 stop31h 40m

$726

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Tue 8/4

3:55 pm-8:20 pm

3 stops19h 25m

Trondheim Vaernes

Wed 9/2

3:50 pm-1:45 pm

2 stops54h 55m

$730

Flights are sorted by cheapest round-trip flights first.

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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 32% 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	20h 05m
Direct flights	None

The fastest flight from Seattle to Trondheim takes 20h 05m

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

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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 20h 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 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.