CA $813 Cheap Flights from Seattle (SEA) to Trondheim (TRD)

View CA $813 flight on Fri, Apr 17, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Vaernes Airport (TRD)

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Cheap flights from Seattle (SEA) to Trondheim (TRD)

Prices were available within the past 7 days and start at CA $813 for one-way flights and CA $1,935 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Fri, Apr 17 - Fri, Apr 24
SEA
Seattle
TRD
Trondheim
CA $1,935 Roundtrip, found 3 days ago
CA $1,935
Roundtrip
found 3 days ago
Select KLM flight, departing Fri, Apr 17 from Seattle to Trondheim, returning Fri, Apr 24, priced at CA $1,935 found 3 days ago
KLM
Fri, Apr 17 - Fri, Apr 24
SEA
Seattle
TRD
Trondheim
CA $1,964 Roundtrip, found 3 days ago
CA $1,964
Roundtrip
found 3 days ago
Select KLM flight, departing Fri, Apr 17 from Seattle to Trondheim, returning Fri, Apr 24, priced at CA $1,964 found 3 days ago
KLM
Fri, Apr 17 - Fri, Apr 24
SEA
Seattle
TRD
Trondheim
CA $2,034 Roundtrip, found 3 days ago
CA $2,034
Roundtrip
found 3 days ago
Select KLM flight, departing Fri, Apr 17 from Seattle to Trondheim, returning Fri, Apr 24, priced at CA $2,034 found 3 days ago
KLM
Fri, Apr 17 - Fri, Apr 24
SEA
Seattle
TRD
Trondheim
CA $2,063 Roundtrip, found 3 days ago
CA $2,063
Roundtrip
found 3 days ago
Select KLM flight, departing Fri, Apr 17 from Seattle to Trondheim, returning Fri, Apr 24, priced at CA $2,063 found 3 days ago
Air Canada
Fri, Apr 17 - Fri, Apr 24
SEA
Seattle
TRD
Trondheim
CA $2,070 Roundtrip, found 3 days ago
CA $2,070
Roundtrip
found 3 days ago
Select Air Canada flight, departing Fri, Apr 17 from Seattle to Trondheim, returning Fri, Apr 24, priced at CA $2,070 found 3 days ago
Icelandair
Fri, Apr 17 - Fri, Apr 24
SEA
Seattle
TRD
Trondheim
CA $2,128 Roundtrip, found 3 days ago
CA $2,128
Roundtrip
found 3 days ago
Select Icelandair flight, departing Fri, Apr 17 from Seattle to Trondheim, returning Fri, Apr 24, priced at CA $2,128 found 3 days ago
KLM
Fri, Apr 17 - Fri, Apr 24
SEA
Seattle
TRD
Trondheim
CA $2,212 Roundtrip, found 3 days ago
CA $2,212
Roundtrip
found 3 days ago
Select KLM flight, departing Fri, Apr 17 from Seattle to Trondheim, returning Fri, Apr 24, priced at CA $2,212 found 3 days ago
Air Canada
Fri, Apr 17 - Fri, Apr 24
SEA
Seattle
TRD
Trondheim
CA $2,266 Roundtrip, found 3 days ago
CA $2,266
Roundtrip
found 3 days ago
Select Air Canada flight, departing Fri, Apr 17 from Seattle to Trondheim, returning Fri, Apr 24, priced at CA $2,266 found 3 days ago
American Airlines
Fri, Apr 17 - Fri, Apr 24
SEA
Seattle
TRD
Trondheim
CA $2,272 Roundtrip, found 3 days ago
CA $2,272
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Apr 17 from Seattle to Trondheim, returning Fri, Apr 24, priced at CA $2,272 found 3 days ago
Lufthansa
Fri, Apr 17 - Fri, Apr 24
SEA
Seattle
TRD
Trondheim
CA $2,274 Roundtrip, found 3 days ago
CA $2,274
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Fri, Apr 17 from Seattle to Trondheim, returning Fri, Apr 24, priced at CA $2,274 found 3 days ago

Frequently asked questions

How much is a flight from SEA to Trondheim Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip journey from Sea-Tac Airport to TRD was CA $1,935. Cheap tickets don't last forever, so book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Seattle - Tacoma Intl. Airport (SEA) to Trondheim Airport?
This varies between airlines, as each has its own set of terms and conditions. Visit the Customer Service Portal, where you'll find instructions on how to cancel online.
How do I find cheap flights from SEA to Vaernes Airport (TRD) that have flexible change policies?
Use our "No change fees" filter to find flexible travel options for your flight from Seattle - Tacoma Intl. Airport (SEA) to Vaernes Airport (TRD). This allows you to lock in a good price in advance and still have the freedom to make changes without any additional fees. Fare adjustments may apply if your new flight is more expensive.
How many hours is the flight from SEA to Vaernes Airport (TRD)?
To get through the 12 hours and 11 minutes flight time between SEA and Vaernes Airport (TRD), it's smart to have a plan. A tablet filled with your favourite playlists is a good place to start.
How far is the flight from Sea-Tac Airport to TRD?
The distance is around 7,000 kilometres, so fill your carry-on bag with all the things you need to make your journey comfortable. Not sure what to take on board your SeaTac to Stjordal flight? A sleep mask, earplugs and a travel pillow are a few essentials.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Vaernes Airport (TRD)?
If you want to travel straight from SEA to TRD, you'll need to book a flight with at least one stop. Unfortunately, there aren't any airlines that fly directly between these airports.
Are Sea-Tac Airport to Trondheim Airport flight tickets cheaper when they're purchased at the last minute?
Late planners can sometimes score a bargain, with some super cheap airfares from Sea-Tac Airport to Trondheim Airport popping up a few weeks before the date of departure. If you'd rather plan ahead of time, Expedia compares and updates the best flight deals regularly — as early as 12 months in advance in some cases. It does depend on the carrier though, as not all airlines publish prices that far in advance.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Vaernes
Roundtrip price
CA $1,935
Distance
6978 km

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