$1,410 Cheap Flights from Trondheim (TRD) to St. Louis (STL)

View $1,410 flight on Mon, Dec 22, 2025Opens in a new window

Popular airlines from Vaernes Airport (TRD) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Trondheim to St. Louis (TRD-STL)

Prices were available within the past 7 days and start at $1,410 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Vaernes Airport (TRD) to Lambert-St. Louis Intl. Airport (STL) cost?
Secure a cheap one-way flight from $1,410 or cheap return flight from Vaernes Airport (TRD) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Vaernes Airport (TRD) to Lambert-St. Louis Intl. Airport (STL)?
is the most affordable month to fly from TRD to STL. Traveling during an off-peak travel window is often the key to finding better fares.
What is the cheapest airline that flies from Vaernes Airport (TRD) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from TRD to STL, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Vaernes Airport (TRD) to Lambert-St. Louis Intl. Airport (STL)?
There aren't any daily nonstop flights available from Vaernes Airport (TRD) to Lambert-St. Louis Intl. Airport (STL). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from TRD to STL?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary based on a range of factors, including 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 Vaernes Airport (TRD) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the Vaernes Airport (TRD) to Lambert-St. Louis Intl. Airport (STL) route, fly before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**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 Vaernes Airport (TRD) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Waiting until just before your departure to book a ticket from TRD to STL generally means paying more. Although you may find some last-minute deals, they're not always guaranteed. Keep your travel plans flexible for a better chance of snagging a bargain.
Is it cheaper to book a TRD to STL flight and hotel package?
Opting for a TRD to STL flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Choose from our wide range of stays and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Vaernes Airport (TRD) to Lambert-St. Louis Intl. Airport (STL)?
Typically, you can cancel or modify your TRD to STL flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you want more information, visit our Customer Service portal.

Travel information

Origin airport
Vaernes
Destination airport
Lambert-St. Louis Intl.
Distance
4183 mi

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Trondheim to St. Louis Flights

The cheapest times to fly from Trondheim to St. Louis

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 Trondheim to St. Louis are during the month of . You can find some of the cheapest flights from Trondheim to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Trondheim to St. Louis

Sunday is one of the best days to book for cheap flights from Trondheim to St. Louis: 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 Trondheim to St. Louis

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 Trondheim to St. Louis in 2026. You can also book with separate airlines for your outbound and return journeys, from $1,410 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 Trondheim to St. Louis 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 Trondheim to St. Louis 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.

 

Trondheim to St. Louis Flights

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