$323 Cheap Flights from Washington (IAD) to Trondheim (TRD)

View $323 flight on Tue, Dec 2, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Vaernes Airport (TRD)

Cheap Flights from Washington to Trondheim (IAD-TRD)

Prices were available within the past 7 days and start at $323 for one-way flights and $456 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Mon, Jan 19 - Wed, Feb 4
IAD
Washington
TRD
Trondheim
$456 Roundtrip, found 23 hours ago
$456
Roundtrip
found 23 hours ago
Select Scandinavian Airlines flight, departing Mon, Jan 19 from Washington to Trondheim, returning Wed, Feb 4, priced at $456 found 23 hours ago
Scandinavian Airlines
Mon, Jan 26 - Wed, Feb 11
IAD
Washington
TRD
Trondheim
$468 Roundtrip, found 23 hours ago
$468
Roundtrip
found 23 hours ago
Select Scandinavian Airlines flight, departing Mon, Jan 26 from Washington to Trondheim, returning Wed, Feb 11, priced at $468 found 23 hours ago
Scandinavian Airlines
Mon, Jan 19 - Sat, Feb 7
IAD
Washington
TRD
Trondheim
$486 Roundtrip, found 23 hours ago
$486
Roundtrip
found 23 hours ago
Select Scandinavian Airlines flight, departing Mon, Jan 19 from Washington to Trondheim, returning Sat, Feb 7, priced at $486 found 23 hours ago
Scandinavian Airlines
Wed, Jan 7 - Wed, Jan 21
IAD
Washington
TRD
Trondheim
$498 Roundtrip, found 23 hours ago
$498
Roundtrip
found 23 hours ago
Select Scandinavian Airlines flight, departing Wed, Jan 7 from Washington to Trondheim, returning Wed, Jan 21, priced at $498 found 23 hours ago
Scandinavian Airlines
Sat, Dec 6 - Wed, Dec 10
IAD
Washington
TRD
Trondheim
$502 Roundtrip, found 1 day ago
$502
Roundtrip
found 1 day ago
Select Scandinavian Airlines flight, departing Sat, Dec 6 from Washington to Trondheim, returning Wed, Dec 10, priced at $502 found 1 day ago
Scandinavian Airlines
Mon, Jan 12 - Wed, Jan 21
IAD
Washington
TRD
Trondheim
$502 Roundtrip, found 1 day ago
$502
Roundtrip
found 1 day ago
Select Scandinavian Airlines flight, departing Mon, Jan 12 from Washington to Trondheim, returning Wed, Jan 21, priced at $502 found 1 day ago
Delta
Wed, Dec 3 - Sun, Dec 14
IAD
Washington
TRD
Trondheim
$515 Roundtrip, found 1 day ago
$515
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Dec 3 from Washington to Trondheim, returning Sun, Dec 14, priced at $515 found 1 day ago
TAP Portugal
Wed, Jan 7 - Sun, Jan 11
IAD
Washington
TRD
Trondheim
$527 Roundtrip, found 3 days ago
$527
Roundtrip
found 3 days ago
Select TAP Portugal flight, departing Wed, Jan 7 from Washington to Trondheim, returning Sun, Jan 11, priced at $527 found 3 days ago
KLM
Tue, Dec 9 - Sun, Dec 14
IAD
Washington
TRD
Trondheim
$541 Roundtrip, found 1 day ago
$541
Roundtrip
found 1 day ago
Select KLM flight, departing Tue, Dec 9 from Washington to Trondheim, returning Sun, Dec 14, priced at $541 found 1 day ago
Air France
Sun, Feb 8 - Tue, Feb 17
IAD
Washington
TRD
Trondheim
$851 Roundtrip, found 6 days ago
$851
Roundtrip
found 6 days ago
Select Air France flight, departing Sun, Feb 8 from Washington to Trondheim, returning Tue, Feb 17, priced at $851 found 6 days ago

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Vaernes Airport (TRD) cost?
Grab a cheap one-way flight from $323 or cheap return flight from $456 from Washington Dulles Intl. Airport (IAD) to Vaernes Airport (TRD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Vaernes Airport (TRD)?
Planning your getaway for January may help you find better deals, as it's the cheapest month for flights between IAD and TRD. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Vaernes Airport (TRD)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from IAD to TRD. Then, sort your results by "Price (lowest to highest)" to score a great deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Vaernes Airport (TRD)?
There aren't any daily nonstop flights from Washington Dulles Intl. Airport (IAD) to Vaernes Airport (TRD). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from IAD to TRD?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary based on a number of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Vaernes Airport (TRD)?
Choose a flight from Washington Dulles Intl. Airport (IAD) to Vaernes Airport (TRD) that takes off before 3 PM to reduce the likelihood of delays. Departures later than this have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Vaernes Airport (TRD) last-minute?
Holding off until just before your trip to book your flight from IAD to TRD generally means paying more. Although you may find some last-minute offers, they're not always guaranteed. Keep your travel schedule open to boost your chances of scoring a bargain.
Is it cheaper to book an IAD to TRD flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAD to TRD flight and hotel package with Expedia could lead to significant savings. Better yet, having it all in one place will take the stress out of planning your trip. Just secure your flights and choose from our extensive range of stays, then customize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Vaernes Airport (TRD)?
If you reserved your IAD to TRD flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Vaernes
Airlines serving
Air France, Delta, Finnair, KLM, Lufthansa, Scandinavian Airlines, TAP Portugal
Roundtrip price
$456
Distance
3806 mi

Book with confidence

Washington to Trondheim Flights

The cheapest times to fly from Washington to Trondheim

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Trondheim are during the month of January. You can find some of the cheapest flights from Washington to Trondheim with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Trondheim

Sunday is one of the best days to book for cheap flights from Washington to Trondheim: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Trondheim

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Trondheim in 2025. You can also book with separate airlines for your outbound and return journeys, from $323 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Trondheim flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Trondheim airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Washington to Trondheim Flights

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*Available to One Key members.