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.

$441 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.

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

17h 00m1 stop Amsterdam Schiphol

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

14h 27m1 stop Amsterdam Schiphol

$632KLM

Mon, Nov 2 - Thu, Nov 12

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

17h 00m1 stop Amsterdam Schiphol

6:20 am - 2:44 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

17h 24m2 stops Amsterdam Schiphol Salt Lake City

$642KLM

Mon, Nov 2 - Thu, Nov 12

11:10 pm - 9:40 amSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

25h 30m2 stops Boston Logan Intl Kastrup Copenhagen

5:30 am - 10:55 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

26h 25m2 stops Kastrup Copenhagen Boston Logan Intl

$713Scandinavian Airlines

Mon, Nov 2 - Thu, Nov 12

7:24 am - 12:30 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

20h 06m3 stops Boston Logan Intl Kastrup Copenhagen Oslo Gardermoen

10:30 am - 10:04 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

20h 34m3 stops Oslo Gardermoen Kastrup Copenhagen Los Angeles Los Angeles

$799Scandinavian Airlines

Mon, Nov 2 - Thu, Nov 12

7:20 am - 2:30 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

22h 10m2 stops Chicago O'Hare Intl Kastrup Copenhagen

5:30 am - 11:59 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

27h 29m2 stops Kastrup Copenhagen Los Angeles Los Angeles

$804Scandinavian Airlines

Wed, Nov 18 - Sun, Nov 22

7:24 am - 12:30 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

20h 06m3 stops Boston Logan Intl Kastrup Copenhagen Oslo Gardermoen

10:15 am - 10:55 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

21h 40m2 stops Kastrup Copenhagen Boston Logan Intl

$825Scandinavian Airlines

Mon, Nov 2 - Thu, Nov 12

12:30 pm - 12:50 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

39h 20m2 stops Los Angeles Los Angeles Kastrup Copenhagen

4:55 pm - 11:04 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

39h 09m2 stops Oslo Gardermoen New York John F Kennedy Intl

$828Scandinavian Airlines

Fri, Oct 16 - Tue, Oct 20

7:15 am - 12:35 amSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

32h 20m2 stops Chicago O'Hare Intl Kastrup Copenhagen

4:55 pm - 11:04 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

39h 09m2 stops Oslo Gardermoen New York John F Kennedy Intl

$858Scandinavian Airlines

Fri, Oct 16 - Tue, Oct 20

7:15 am - 12:35 amSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

32h 20m2 stops Chicago O'Hare Intl Kastrup Copenhagen

4:55 pm - 11:04 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

39h 09m2 stops Oslo Gardermoen New York John F Kennedy Intl

$859Scandinavian Airlines

Fri, Oct 16 - Tue, Oct 20

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KLM flights from Seattle to Trondheim

Our best KLM deals on Seattle to Trondheim flight tickets

KLM

Nov 2

SEA2:35 pmSeattle/Tacoma Intl

17h 00m

1 stop

TRD4:35 pmTrondheim Vaernes

Nov 12

TRD6:20 amTrondheim Vaernes

14h 27m

1 stop

SEA11:47 amSeattle/Tacoma Intl

$632

KLM

Nov 2

SEA2:35 pmSeattle/Tacoma Intl

17h 00m

1 stop

TRD4:35 pmTrondheim Vaernes

Nov 12

TRD6:20 amTrondheim Vaernes

17h 24m

2 stops

SEA2:44 pmSeattle/Tacoma Intl

$642

Scandinavian Airlines flights from Seattle to Trondheim

Our best Scandinavian Airlines deals on Seattle to Trondheim flight tickets

Scandinavian Airlines

Nov 2

SEA11:10 pmSeattle/Tacoma Intl

25h 30m

2 stops

TRD9:40 amTrondheim Vaernes

Nov 12

TRD5:30 amTrondheim Vaernes

26h 25m

2 stops

SEA10:55 pmSeattle/Tacoma Intl

$713

Scandinavian Airlines

Nov 2

SEA7:24 amSeattle/Tacoma Intl

20h 06m

3 stops

TRD12:30 pmTrondheim Vaernes

Nov 12

TRD10:30 amTrondheim Vaernes

20h 34m

3 stops

SEA10:04 pmSeattle/Tacoma Intl

$799

Scandinavian Airlines

Nov 18

SEA7:20 amSeattle/Tacoma Intl

22h 10m

2 stops

TRD2:30 pmTrondheim Vaernes

Nov 22

TRD5:30 amTrondheim Vaernes

27h 29m

2 stops

SEA11:59 pmSeattle/Tacoma Intl

$804

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Mon 11/2

2:35 pm-4:35 pm

1 stop17h 00m

Trondheim Vaernes

Thu 11/12

6:20 am-11:47 am

1 stop14h 27m

$632

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Mon 11/2

2:35 pm-4:35 pm

1 stop17h 00m

Trondheim Vaernes

Thu 11/12

6:20 am-2:44 pm

2 stops17h 24m

$642

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Mon 11/2

11:10 pm-9:40 am

2 stops25h 30m

Trondheim Vaernes

Thu 11/12

5:30 am-10:55 pm

2 stops26h 25m

$713

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Mon 11/2

7:24 am-12:30 pm

3 stops20h 06m

Trondheim Vaernes

Thu 11/12

10:30 am-10:04 pm

3 stops20h 34m

$799

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Wed 11/18

7:20 am-2:30 pm

2 stops22h 10m

Trondheim Vaernes

Sun 11/22

5:30 am-11:59 pm

2 stops27h 29m

$804

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Mon 11/2

7:24 am-12:30 pm

3 stops20h 06m

Trondheim Vaernes

Thu 11/12

10:15 am-10:55 pm

2 stops21h 40m

$825

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Fri 10/16

12:30 pm-12:50 pm

2 stops39h 20m

Trondheim Vaernes

Tue 10/20

4:55 pm-11:04 pm

2 stops39h 09m

$828

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Fri 10/16

7:15 am-12:35 am

2 stops32h 20m

Trondheim Vaernes

Tue 10/20

4:55 pm-11:04 pm

2 stops39h 09m

$858

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Fri 10/16

7:15 am-12:35 am

2 stops32h 20m

Trondheim Vaernes

Tue 10/20

4:55 pm-11:04 pm

2 stops39h 09m

$859

Cheapest one-way

SeattleTrondheim

SEA Seattle/Tacoma Intl - TRD Trondheim Vaernes

SEATRD

Seattle/Tacoma Intl

Wed 9/16

1:57 pm-5:20 pm

2 stops42h 23m

$441

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?

Lufthansa and KLM are the most popular carriers 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

Fastest flight time	32h 20m
Direct flights	None

The fastest flight from Seattle to Trondheim takes 32h 20m

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 32h 20m, 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 1,555 reviews		Search KLM flights

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

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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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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.