In terms of precipitation, rainfall in Trondheim ranges from 1.8 - 4.3 inches per month. September is typically the wettest month, when rainfall can reach 4.3 in. April is typically the driest time to visit Trondheim when rainfall is around 1.8 in.

If weather is an important factor for your trip to Trondheim, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 55.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

What is the cheapest time of day to fly from WA to TRD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Trondheim as you normally would.

What airport do you fly into for flights to Trondheim from Washington?

Located just 16.4 mi from the city center, Trondheim Vaernes (TRD) is the airport most travelers will use when flying to Trondheim from Washington.

Can I find deals for flights from Washington to Trondheim that include hotel bookings?

Yes. In addition to deals on Washington to Trondheim flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington to Trondheim?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Trondheim.

Can I find deals for business class flights from Washington to Trondheim?

Yes. Cheapflights offers flight deals from Washington to Trondheim by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$507+ Flights from Washington to Trondheim

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Cheap flight deals from Washington to Trondheim

Round-trip from	$507 (KLM)

From Washington to Trondheim Vaernes

Search Deals

Find flight deals from Washington to Trondheim

Cheapest flights from Washington to Trondheim
Explore the most affordable flight options available from Washington to Trondheim. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

dom. 8/175:40 pmSEA - TRD

1 stop32h 50mKLM

mar. 8/266:00 amTRD - SEA

1 stop14h 35mKLM

Deal found 7/31

$507

mar. 8/195:40 pmSEA - TRD

1 stop13h 50mDelta

vie. 11/146:15 amTRD - SEA

2 stops19h 44mDelta

Deal found 7/30

$518

dom. 9/144:20 pmSEA - TRD

1 stop32h 15mScandinavian Airlines

dom. 9/213:00 pmTRD - SEA

2 stops41h 15mScandinavian Airlines

Deal found 7/30

$545

dom. 9/142:20 pmSEA - TRD

2 stops23h 25mMultiple Airlines

dom. 9/217:30 amTRD - SEA

3 stops20h 06mMultiple Airlines

Deal found 7/30

$970

Best flights from Washington to Trondheim
Discover carefully curated flight deals from Washington to Trondheim that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 31, 2025.

dom. 8/175:40 pmSEA - TRD

1 stop32h 50mKLM

mar. 8/266:00 amTRD - SEA

1 stop14h 35mKLM

Deal found 7/31

$507

mar. 8/195:40 pmSEA - TRD

1 stop13h 50mDelta

vie. 11/146:15 amTRD - SEA

2 stops19h 44mDelta

Deal found 7/30

$518

dom. 9/144:20 pmSEA - TRD

1 stop32h 15mScandinavian Airlines

dom. 9/213:00 pmTRD - SEA

2 stops41h 15mScandinavian Airlines

Deal found 7/30

$545

dom. 9/142:20 pmSEA - TRD

2 stops23h 25mMultiple Airlines

dom. 9/217:30 amTRD - SEA

3 stops20h 06mMultiple Airlines

Deal found 7/30

$970

Last-minute flights from Washington to Trondheim
Discover last-minute flight deals from Washington to Trondheim. Data last updated julio 31, 2025 and is based on user searches.

dom. 8/175:40 pmSEA - TRD

1 stop32h 50mKLM

mar. 8/266:00 amTRD - SEA

1 stop14h 35mKLM

Deal found 7/31

$507

mar. 8/195:40 pmSEA - TRD

1 stop13h 50mDelta

vie. 11/146:15 amTRD - SEA

2 stops19h 44mDelta

Deal found 7/30

$518

mar. 8/197:18 amSEA - TRD

2 stops22h 02mScandinavian Airlines

sáb. 8/237:15 pmTRD - SEA

2 stops27h 35mScandinavian Airlines

Deal found 7/30

$860

mar. 8/197:00 pmSEA - TRD

3 stops29h 50mMultiple Airlines

sáb. 8/237:00 pmTRD - SEA

3 stops34h 40mMultiple Airlines

Deal found 7/30

$1,094

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington to Trondheim that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

dom. 8/17

5:40 pm-11:30 am

1 stop32h 50m

Trondheim Vaernes

mar. 8/26

6:00 am-11:35 am

1 stop14h 35m

$507

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

mar. 8/19

5:40 pm-4:30 pm

1 stop13h 50m

Trondheim Vaernes

vie. 11/14

6:15 am-4:59 pm

2 stops19h 44m

$518

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

dom. 9/14

4:20 pm-9:35 am

1 stop32h 15m

Trondheim Vaernes

dom. 9/21

3:00 pm-11:15 pm

2 stops41h 15m

$545

SeattleTrondheim

SEA - TRD

SEATRD

Seattle/Tacoma Intl

dom. 9/14

2:20 pm-10:45 pm

2 stops23h 25m

Trondheim Vaernes

dom. 9/21

7:30 am-6:36 pm

3 stops20h 06m

$970

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Best time to book a flight from Washington to Trondheim

Have a flexible travel schedule? Discover the best time to fly to Trondheim from Washington with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Trondheim

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Trondheim

Get a feel of what it's like to fly with Delta, KLM, and Scandinavian Airlines from Washington to Trondheim by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,981 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,383 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Scandinavian Airlines

7.4

Good

1,457 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly into for flights to Trondheim from Washington?
Located just 16.4 mi from the city center, Trondheim Vaernes (TRD) is the airport most travelers will use when flying to Trondheim from Washington.
Can I find deals for flights from Washington to Trondheim that include hotel bookings?
Yes. In addition to deals on Washington to Trondheim flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington to Trondheim?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Trondheim.
Can I find deals for business class flights from Washington to Trondheim?
Yes. Cheapflights offers flight deals from Washington to Trondheim by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Complete your trip

Trondheim car rentals

Trondheim Vaernes Airport car rentals

Kristiansund Kvernberget Airport car rentals

Rørvik Ryumsjoen Aprt Airport car rentals

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$507+ Cheap flights from Washington to Trondheim (TRD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington to Trondheim with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Washington to Trondheim

Keep the following information in mind while searching for Washington to Trondheim flight deals. Data was last updated julio 31, 2025.

Round-trip from

Find flight deals from Washington to Trondheim

Cheapest flights from Washington to TrondheimExplore the most affordable flight options available from Washington to Trondheim. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

Explore the most affordable flight options available from Washington to Trondheim. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington to Trondheim that are best for you.

Best time to book a flight from Washington to Trondheim

Have a flexible travel schedule? Discover the best time to fly to Trondheim from Washington with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington to Trondheim

Reviews of airlines servicing Trondheim

Get a feel of what it's like to fly with Delta, KLM, and Scandinavian Airlines from Washington to Trondheim by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington to Trondheim. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Trondheim from Washington?

Can I find deals for flights from Washington to Trondheim that include hotel bookings?

How can I find direct flights from Washington to Trondheim?

Can I find deals for business class flights from Washington to Trondheim?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Trondheim

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Washington to Trondheim
Explore the most affordable flight options available from Washington to Trondheim. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.