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 July 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.

$347 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.

5:45 pm - 10:50 pm

SEA

TRD

20h 05m

1 stop

6:00 am - 11:37 am

TRD

SEA

14h 37m

1 stop

$633KLM

Sun, Aug 16 - Fri, Aug 21

5:45 pm - 10:50 pm

SEA

TRD

20h 05m

1 stop

6:00 am - 11:37 am

TRD

SEA

14h 37m

1 stop

$633KLM

Sun, Aug 16 - Fri, Aug 21

5:45 pm - 10:50 pm

SEA

TRD

20h 05m

1 stop

6:00 am - 11:37 am

TRD

SEA

14h 37m

1 stop

$652KLM

Sun, Aug 16 - Fri, Aug 21

5:45 pm - 10:50 pm

SEA

TRD

20h 05m

1 stop

6:00 am - 11:37 am

TRD

SEA

14h 37m

1 stop

$652KLM

Sun, Aug 16 - Fri, Aug 21

3:55 pm - 9:35 pm

SEA

TRD

20h 40m

2 stops

6:25 pm - 1:45 pm

TRD

SEA

28h 20m

2 stops

$655Scandinavian Airlines

Sun, Aug 16 - Mon, Aug 24

5:45 pm - 4:35 pm

SEA

TRD

13h 50m

1 stop

6:00 am - 11:52 am

TRD

SEA

14h 52m

1 stop

$667Delta

Thu, Oct 8 - Mon, Oct 12

6:00 am - 11:35 am

SEA

TRD

20h 35m

2 stops

6:00 am - 4:35 pm

TRD

SEA

19h 35m

1 stop

$672Delta

Thu, Sep 10 - Thu, Sep 17

3:55 pm - 12:35 am

SEA

TRD

23h 40m

1 stop

6:25 pm - 1:45 pm

TRD

SEA

28h 20m

2 stops

$678Scandinavian Airlines

Sun, Aug 16 - Mon, Aug 24

3:25 pm - 4:35 pm

SEA

TRD

17h 10m

1 stop

6:20 am - 8:04 pm

TRD

SEA

21h 44m

2 stops

$678Delta

Sun, Oct 25 - Fri, Oct 30

5:45 pm - 10:50 pm

SEA

TRD

20h 05m

1 stop

6:00 am - 4:48 pm

TRD

SEA

19h 48m

2 stops

$678KLM

Thu, Oct 8 - Mon, Oct 12

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Delta flights from Seattle to Trondheim

Our best Delta deals on Seattle to Trondheim flight tickets

Delta

Oct 8

SEA5:45 pmSeattle/Tacoma Intl

13h 50m

1 stop

TRD4:35 pmTrondheim Vaernes

Oct 12

TRD6:00 amTrondheim Vaernes

14h 52m

1 stop

SEA11:52 amSeattle/Tacoma Intl

$667

Delta

Oct 25

SEA3:15 pmSeattle/Tacoma Intl

17h 20m

2 stops

TRD4:35 pmTrondheim Vaernes

Oct 30

TRD6:20 amTrondheim Vaernes

21h 44m

2 stops

SEA8:04 pmSeattle/Tacoma Intl

$682

Delta

Aug 16

SEA5:45 pmSeattle/Tacoma Intl

13h 50m

1 stop

TRD4:35 pmTrondheim Vaernes

Aug 21

TRD6:00 amTrondheim Vaernes

19h 37m

2 stops

SEA4:37 pmSeattle/Tacoma Intl

$764

KLM flights from Seattle to Trondheim

Our best KLM deals on Seattle to Trondheim flight tickets

KLM

Aug 16

SEA5:45 pmSeattle/Tacoma Intl

20h 05m

1 stop

TRD10:50 pmTrondheim Vaernes

Aug 21

TRD6:00 amTrondheim Vaernes

14h 37m

1 stop

SEA11:37 amSeattle/Tacoma Intl

$633

KLM

Aug 16

SEA5:45 pmSeattle/Tacoma Intl

20h 05m

1 stop

TRD10:50 pmTrondheim Vaernes

Aug 21

TRD6:00 amTrondheim Vaernes

14h 37m

1 stop

SEA11:37 amSeattle/Tacoma Intl

$652

KLM

Aug 16

SEA5:45 pmSeattle/Tacoma Intl

20h 05m

1 stop

TRD10:50 pmTrondheim Vaernes

Aug 19

TRD6:00 amTrondheim Vaernes

14h 37m

1 stop

SEA11:37 amSeattle/Tacoma Intl

$742

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Sun 8/16

5:45 pm-10:50 pm

1 stop20h 05m

Trondheim Vaernes

Fri 8/21

6:00 am-11:37 am

1 stop14h 37m

$633

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Sun 8/16

5:45 pm-10:50 pm

1 stop20h 05m

Trondheim Vaernes

Fri 8/21

6:00 am-11:37 am

1 stop14h 37m

$633

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Sun 8/16

5:45 pm-10:50 pm

1 stop20h 05m

Trondheim Vaernes

Fri 8/21

6:00 am-11:37 am

1 stop14h 37m

$652

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Sun 8/16

5:45 pm-10:50 pm

1 stop20h 05m

Trondheim Vaernes

Fri 8/21

6:00 am-11:37 am

1 stop14h 37m

$652

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Sun 8/16

3:55 pm-9:35 pm

2 stops20h 40m

Trondheim Vaernes

Mon 8/24

6:25 pm-1:45 pm

2 stops28h 20m

$655

Quickest round-trip

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Thu 10/8

5:45 pm-4:35 pm

1 stop13h 50m

Trondheim Vaernes

Mon 10/12

6:00 am-11:52 am

1 stop14h 52m

$667

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Thu 9/10

6:00 am-11:35 am

2 stops20h 35m

Trondheim Vaernes

Thu 9/17

6:00 am-4:35 pm

1 stop19h 35m

$672

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Sun 8/16

3:55 pm-12:35 am

1 stop23h 40m

Trondheim Vaernes

Mon 8/24

6:25 pm-1:45 pm

2 stops28h 20m

$678

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Sun 10/25

3:25 pm-4:35 pm

1 stop17h 10m

Trondheim Vaernes

Fri 10/30

6:20 am-8:04 pm

2 stops21h 44m

$678

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

Thu 10/8

5:45 pm-10:50 pm

1 stop20h 05m

Trondheim Vaernes

Mon 10/12

6:00 am-4:48 pm

2 stops19h 48m

$678

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

Fastest flight time	13h 50m
Direct flights	None

The fastest flight from Seattle to Trondheim takes 13h 50m

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 13h 50m, 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 July 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 1,550 reviews		Search KLM flights

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.