$446 Cheap Flights from St. Louis (STL) to Oslo (OSL)

View $446 flight on Tue, Apr 28, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Gardermoen Airport (OSL)

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Cheap Flights from St. Louis to Oslo (STL-OSL)

Prices were available within the past 7 days and start at $446 for one-way flights and $518 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Tue, Apr 21 - Tue, Apr 28
STL
St. Louis
OSL
Oslo
$518 Roundtrip, found 3 hours ago
$518
Roundtrip
found 3 hours ago
Select Scandinavian Airlines flight, departing Tue, Apr 21 from St. Louis to Oslo, returning Tue, Apr 28, priced at $518 found 3 hours ago
Scandinavian Airlines
Sat, Feb 14 - Sat, Feb 21
STL
St. Louis
OSL
Oslo
$519 Roundtrip, found 3 days ago
$519
Roundtrip
found 3 days ago
Select Scandinavian Airlines flight, departing Sat, Feb 14 from St. Louis to Oslo, returning Sat, Feb 21, priced at $519 found 3 days ago
Scandinavian Airlines
Tue, Apr 28 - Sun, May 17
STL
St. Louis
OSL
Oslo
$548 Roundtrip, found 3 hours ago
$548
Roundtrip
found 3 hours ago
Select Scandinavian Airlines flight, departing Tue, Apr 28 from St. Louis to Oslo, returning Sun, May 17, priced at $548 found 3 hours ago
Scandinavian Airlines
Tue, Apr 28 - Sun, May 17
STL
St. Louis
OSL
Oslo
$568 Roundtrip, found 3 hours ago
$568
Roundtrip
found 3 hours ago
Select Scandinavian Airlines flight, departing Tue, Apr 28 from St. Louis to Oslo, returning Sun, May 17, priced at $568 found 3 hours ago
Lufthansa
Mon, Nov 24 - Wed, Dec 3
STL
St. Louis
OSL
Oslo
$595 Roundtrip, found 1 day ago
$595
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Mon, Nov 24 from St. Louis to Oslo, returning Wed, Dec 3, priced at $595 found 1 day ago
United
Tue, Dec 30 - Wed, Jan 14
STL
St. Louis
OSL
Oslo
$597 Roundtrip, found 16 hours ago
$597
Roundtrip
found 16 hours ago
Select United flight, departing Tue, Dec 30 from St. Louis to Oslo, returning Wed, Jan 14, priced at $597 found 16 hours ago
United
Tue, Dec 30 - Fri, Jan 16
STL
St. Louis
OSL
Oslo
$597 Roundtrip, found 4 days ago
$597
Roundtrip
found 4 days ago
Select United flight, departing Tue, Dec 30 from St. Louis to Oslo, returning Fri, Jan 16, priced at $597 found 4 days ago
British Airways
Tue, Aug 11 - Tue, Aug 25
STL
St. Louis
OSL
Oslo
$598 Roundtrip, found 2 days ago
$598
Roundtrip
found 2 days ago
Select British Airways flight, departing Tue, Aug 11 from St. Louis to Oslo, returning Tue, Aug 25, priced at $598 found 2 days ago
United
Mon, Mar 9 - Fri, Mar 13
STL
St. Louis
OSL
Oslo
$598 Roundtrip, found 1 day ago
$598
Roundtrip
found 1 day ago
Select United flight, departing Mon, Mar 9 from St. Louis to Oslo, returning Fri, Mar 13, priced at $598 found 1 day ago
Delta
Tue, Dec 2 - Tue, Dec 16
STL
St. Louis
OSL
Oslo
$600 Roundtrip, found 3 days ago
$600
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Dec 2 from St. Louis to Oslo, returning Tue, Dec 16, priced at $600 found 3 days ago

Find the cheapest month to fly from St. Louis (STL) to Oslo (OSL)

November is typically the cheapest month to fly

From $557 - $1,538 per traveler.

Alternative airports near Oslo

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Gardermoen OSL. Cheapest and Closest option available. Average driving time to city center is 40 minutes. Flights from $654
OSL
Gardermoen
CheapestClosest
Average driving time to city center40 min
Flights from $654

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Gardermoen Airport (OSL) cost?
Lock in a cheap one-way flight from $446 or cheap return flight from $518 from Lambert-St. Louis Intl. Airport (STL) to Gardermoen Airport (OSL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Gardermoen Airport (OSL)?
April is the most affordable month to fly from STL to OSL. Traveling outside of peak seasons is often the key to finding better deals on flights.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Gardermoen Airport (OSL)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll take you from STL to OSL. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Gardermoen Airport (OSL)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Gardermoen Airport (OSL) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to OSL?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Gardermoen Airport (OSL)?
To touch down at Gardermoen Airport (OSL) on schedule, book a flight that leaves Lambert-St. Louis Intl. Airport (STL) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Lambert-St. Louis Intl. Airport (STL) to Gardermoen Airport (OSL) last-minute?
Last-minute fares from STL to OSL are generally more expensive. To lock in the best prices, start searching for flights well in advance. That said, if you can play around with your travel dates, you may land a cheap ticket just before your departure.
Is it cheaper to book a STL to OSL flight and hotel package?
Opting for a STL to OSL flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Select from our extensive range of hotels and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Gardermoen Airport (OSL)?
In most instances, you can modify or cancel your STL to OSL flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you need more information, go to our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Gardermoen
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, KLM, Lufthansa, Scandinavian Airlines, United, Virgin Atlantic
Roundtrip price
$517
Distance
4299 mi

Book with confidence

St. Louis to Oslo Flights

The cheapest times to fly from St. Louis to Oslo

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

 

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

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

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 St. Louis to Oslo in 2025. You can also book with separate airlines for your outbound and return journeys, from $446 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 St. Louis to Oslo 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 St. Louis to Oslo 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.

 

St. Louis to Oslo Flights

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*Available to One Key members.