Which airports can I use when flying from Seattle to Trondheim?

Flights from Seattle to Trondheim usually depart from Seattle/Tacoma Intl (SEA) and arrive at Trondheim Vaernes (TRD).

What cabin classes can I book on flights from Seattle to Trondheim?

Only Economy Class is available on flights from Seattle to Trondheim.

Which airports do connecting flights from Seattle to Trondheim pass through?

Connecting flights from Seattle to Trondheim most commonly pass through: • Amsterdam Schiphol (AMS) - 88% of one-stop connections • Kastrup Copenhagen (CPH) - 13% of one-stop connections

Can I save money by using flexible dates for flights from Seattle to Trondheim?

Yes. Flexible dates can save you up to 64% on flights from Seattle to Trondheim. Wednesday is the cheapest departure day at $551 round-trip on average, while Saturday is the most expensive at $1,513, a difference of $962. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

How long is a flight from Seattle to Trondheim?

There are currently no nonstop flights available from Seattle to Trondheim. Flights with 1 layover take between 12h 36m and 15h 56m in total, depending on the connection.

Do I need a passport to fly from Seattle to Trondheim?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

How much time can I save by choosing a different layover airport from Seattle to Trondheim?

Flying via Kastrup Copenhagen (CPH) gives the shortest average 1-stop total travel time at 12h 36m, compared with 15h 56m via Amsterdam Schiphol (AMS).

What is the time difference between Seattle and Trondheim?

Trondheim is 9 hours ahead of Seattle (Central European Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Trondheim Vaernes Airport (TRD)?

Trondheim Vaernes Airport (TRD) hosts 5 major car rental companies, with daily rates averaging $81 for economy cars. Top options include: • Alamo • Sixt • Hertz • Avis • Budget

How much should I expect to pay for a Seattle to Trondheim flight?

Round-trip flights from Seattle to Trondheim range from $666 to $894, with an average of $767 over the past 12 months. Anything below $666 counts as a good deal.

How much is a round-trip flight from Seattle to Trondheim?

Round-trip flights from Seattle to Trondheim typically range from $666 to $894. The lowest price found in the past 5 days was $609, on Delta.

What's the cheapest day of the week to fly from Seattle to Trondheim?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Seattle to Trondheim. It’s 29% cheaper than the average day, while Saturday is the most expensive, with prices 97% higher.

Which airline is the cheapest to fly from Seattle to Trondheim?

Delta ($609) and Scandinavian Airlines ($686) are the cheapest airlines to fly round-trip from Seattle to Trondheim according to KAYAK data over the last 5 days.

What’s the most popular layover airport when flying from Seattle to Trondheim?

Amsterdam Schiphol (AMS) is the most popular layover for the Seattle to Trondheim route. 88% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via AMS.

What is the cheapest layover airport when flying from Seattle to Trondheim?

Flights via Amsterdam Schiphol (AMS) offer the most affordable fares, with an average round-trip price of $854. Based on KAYAK data over the past 3 months.

When flying from Seattle to Trondheim which airport offers the shortest layover?

Kastrup Copenhagen (CPH) had the shortest average connection time for Seattle to Trondheim layovers at 7h 11m over the past 3 months.

$609 CHEAP FLIGHTS from Seattle to Trondheim (SEA - TRD)

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Cheapest round-trip

$609

Typical prices: $666-$894

Delta

Tue 4/24Fri 5/4

SEA - TRD • 1 stop

When to travel

October

Cheapest • 13% price drop

July

Most popular

Good to know

Top layover airports

Amsterdam Schiphol (AMS)

Cheapest • Avg $854 (round-trip)

Kastrup Copenhagen (CPH)

Shortest trip • 12h 36m (one-way)

Insights

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We hope you love your trip to Trondheim!

Flight Deals

Cheap Flights from Seattle to Trondheim (SEA-TRD)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Seattle to Trondheim

Sat, Apr 24 - Tue, May 4

5:40 pm - 4:35 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

13h 55m1 stop Amsterdam Schiphol

6:00 am - 11:33 amTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

14h 33m1 stop Amsterdam Schiphol

$609Delta

Sat, Apr 24 - Tue, May 4

1:45 pm - 4:35 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

17h 50m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

6:00 am - 11:33 amTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

14h 33m1 stop Amsterdam Schiphol

$613Delta

Sat, Apr 24 - Tue, May 4

1:45 pm - 4:35 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

17h 50m2 stops Minneapolis St Paul Amsterdam Schiphol

6:00 am - 6:30 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

21h 30m2 stops Amsterdam Schiphol Salt Lake City

$623Delta

Wed, Apr 14 - Sun, Apr 18

7:20 am - 2:25 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

22h 05m2 stops Chicago O'Hare Intl Kastrup Copenhagen

5:55 pm - 10:02 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

37h 07m2 stops Oslo Gardermoen New York John F Kennedy Intl

$686Scandinavian Airlines

Sun, Feb 28 - Wed, Mar 3

8:00 am - 9:40 amSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

40h 40m2 stops Atlanta Hartsfield-Jackson Kastrup Copenhagen

7:55 pm - 10:04 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

35h 09m2 stops Kastrup Copenhagen Boston Logan Intl

$702Scandinavian Airlines

Sun, Feb 28 - Wed, Mar 3

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

41h 20m2 stops San Francisco Kastrup Copenhagen

7:55 pm - 10:04 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

35h 09m2 stops Kastrup Copenhagen Boston Logan Intl

$702Scandinavian Airlines

Sun, Feb 28 - Wed, Mar 3

9:50 am - 12:40 amSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

29h 50m2 stops San Francisco Kastrup Copenhagen

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

37h 00m2 stops Kastrup Copenhagen San Francisco

$702Scandinavian Airlines

Thu, Dec 3 - Thu, Dec 10

2:35 pm - 9:40 pmSEA Seattle/Tacoma Intl-TRD Trondheim Vaernes

22h 05m3 stops Reykjavik Keflavik Intl Stockholm Arlanda Oslo Gardermoen

6:30 am - 5:00 pmTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

19h 30m3 stops Oslo Gardermoen Stockholm Arlanda Reykjavik Keflavik Intl

$707Multiple Airlines

Thu, Dec 3 - Thu, Dec 10

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

17h 00m1 stop Amsterdam Schiphol

6:20 am - 11:50 amTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

14h 30m1 stop Amsterdam Schiphol

$1,058KLM

Fri, Dec 18 - Fri, Dec 25

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

17h 00m1 stop Amsterdam Schiphol

5:10 pm - 11:50 amTRD Trondheim Vaernes-SEA Seattle/Tacoma Intl

27h 40m1 stop Amsterdam Schiphol

$3,004KLM

Booking Insights

Price, demand and travel trends for Seattle to Trondheim flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Seattle to Trondheim? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Trondheim departing in april.
What's the cheapest day of the week to fly from Seattle to Trondheim?: Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Seattle to Trondheim. It’s 29% cheaper than the average day, while Saturday is the most expensive, with prices 97% higher.

Find deals

Low season	February
High season	July
Cheapest flight	$609

Beat the crowds with an average 79% drop in travelers.

The most popular month to fly with an average 17% increase in travelers.

Round-trip flight from Seattle to Trondheim

When to book flights from Seattle to Trondheim

Are your dates flexible? Find out the best times to travel from Seattle to Trondheim based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from Seattle to Trondheim?
Only Economy Class is available on flights from Seattle to Trondheim.
How long is a flight from Seattle to Trondheim?
There are currently no nonstop flights available from Seattle to Trondheim. Flights with 1 layover take between 12h 36m and 15h 56m in total, depending on the connection.
Do I need a passport to fly from Seattle to Trondheim?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How much should I expect to pay for a Seattle to Trondheim flight?
Round-trip flights from Seattle to Trondheim range from $666 to $894, with an average of $767 over the past 12 months. Anything below $666 counts as a good deal.
What car rental options are available at Trondheim Vaernes Airport (TRD)?
Trondheim Vaernes Airport (TRD) hosts 5 major car rental companies, with daily rates averaging $81 for economy cars. Top options include:

• Alamo
• Sixt
• Hertz
• Avis
• Budget
Which airports can I use when flying from Seattle to Trondheim?
Flights from Seattle to Trondheim usually depart from Seattle/Tacoma Intl (SEA) and arrive at Trondheim Vaernes (TRD).
Which airports do connecting flights from Seattle to Trondheim pass through?
Connecting flights from Seattle to Trondheim most commonly pass through:

• Amsterdam Schiphol (AMS) - 88% of one-stop connections
• Kastrup Copenhagen (CPH) - 13% of one-stop connections
Can I save money by using flexible dates for flights from Seattle to Trondheim?
Yes. Flexible dates can save you up to 64% on flights from Seattle to Trondheim. Wednesday is the cheapest departure day at $551 round-trip on average, while Saturday is the most expensive at $1,513, a difference of $962.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
How much time can I save by choosing a different layover airport from Seattle to Trondheim?
Flying via Kastrup Copenhagen (CPH) gives the shortest average 1-stop total travel time at 12h 36m, compared with 15h 56m via Amsterdam Schiphol (AMS).
What is the time difference between Seattle and Trondheim?
Trondheim is 9 hours ahead of Seattle (Central European Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

If your dates are flexible, aim for a Wednesday departure and avoid flying on Saturday. On this route, Wednesday flights average $551, about $962 less than Saturday fares (64% savings) based on the last 12 months.
If you can choose when to travel, plan your Seattle to Trondheim trip for October. Fares historically average $665 round-trip in that month - typically $776 less than the most expensive month, which is December (based on the last 12 months).

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SEA - TRD

$609 Find Cheap Flights from Seattle to Trondheim - Compare and Save

Everything you should know

Cheap Flights from Seattle to Trondheim (SEA-TRD)

Recent round-trip flight deals from Seattle to Trondheim

Recent one-way flight deals from Seattle to Trondheim

Price, demand and travel trends for Seattle to Trondheim flights

How much is a round-trip flight from Seattle to Trondheim?

What's the cheapest day of the week to fly from Seattle to Trondheim?

Which airline is the cheapest to fly from Seattle to Trondheim?

What’s the most popular layover airport when flying from Seattle to Trondheim?

What is the cheapest layover airport when flying from Seattle to Trondheim?

When flying from Seattle to Trondheim which airport offers the shortest layover?

Key details for Seattle to Trondheim flights

Low season

High season

Cheapest flight

When to book flights from Seattle to Trondheim

Your Seattle to Trondheim flight questions, answered

Your guide to booking Seattle to Trondheim flights

More options for your flight from Seattle to Trondheim

Complete your trip to Trondheim with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Seattle to Trondheim

Find direct flights to and from Seattle and Trondheim

Flights from domestic origins to Trondheim

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