$508 Cheap Flights from Oslo (OSL) to St. Louis (STL)

View $508 flight on Fri, May 8, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $508 for one-way flights and $472 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Thu, Sep 11 - Sat, Sep 27
OSL
Oslo
STL
St. Louis
$472 Roundtrip, found 6 days ago
$472
Roundtrip
found 6 days ago
Select British Airways flight, departing Thu, Sep 11 from Oslo to St. Louis, returning Sat, Sep 27, priced at $472 found 6 days ago
British Airways
Thu, Sep 11 - Thu, Sep 18
OSL
Oslo
STL
St. Louis
$474 Roundtrip, found 6 days ago
$474
Roundtrip
found 6 days ago
Select British Airways flight, departing Thu, Sep 11 from Oslo to St. Louis, returning Thu, Sep 18, priced at $474 found 6 days ago
British Airways
Thu, Sep 11 - Sat, Sep 27
OSL
Oslo
STL
St. Louis
$486 Roundtrip, found 6 days ago
$486
Roundtrip
found 6 days ago
Select British Airways flight, departing Thu, Sep 11 from Oslo to St. Louis, returning Sat, Sep 27, priced at $486 found 6 days ago
British Airways
Thu, Sep 11 - Sat, Sep 27
OSL
Oslo
STL
St. Louis
$487 Roundtrip, found 6 days ago
$487
Roundtrip
found 6 days ago
Select British Airways flight, departing Thu, Sep 11 from Oslo to St. Louis, returning Sat, Sep 27, priced at $487 found 6 days ago
British Airways
Thu, Sep 11 - Thu, Sep 18
OSL
Oslo
STL
St. Louis
$489 Roundtrip, found 6 days ago
$489
Roundtrip
found 6 days ago
Select British Airways flight, departing Thu, Sep 11 from Oslo to St. Louis, returning Thu, Sep 18, priced at $489 found 6 days ago
Air Canada
Thu, Sep 11 - Sat, Sep 27
OSL
Oslo
STL
St. Louis
$489 Roundtrip, found 6 days ago
$489
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Sep 11 from Oslo to St. Louis, returning Sat, Sep 27, priced at $489 found 6 days ago
Air Canada
Thu, Sep 11 - Sat, Sep 27
OSL
Oslo
STL
St. Louis
$491 Roundtrip, found 6 days ago
$491
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Sep 11 from Oslo to St. Louis, returning Sat, Sep 27, priced at $491 found 6 days ago
Lufthansa
Thu, Sep 11 - Sat, Sep 27
OSL
Oslo
STL
St. Louis
$522 Roundtrip, found 6 days ago
$522
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Thu, Sep 11 from Oslo to St. Louis, returning Sat, Sep 27, priced at $522 found 6 days ago
Scandinavian Airlines
Thu, Sep 11 - Sat, Sep 27
OSL
Oslo
STL
St. Louis
$675 Roundtrip, found 6 days ago
$675
Roundtrip
found 6 days ago
Select Scandinavian Airlines flight, departing Thu, Sep 11 from Oslo to St. Louis, returning Sat, Sep 27, priced at $675 found 6 days ago
Iberia
Tue, Aug 12 - Thu, Jun 25
OSL
Oslo
STL
St. Louis
$740 Roundtrip, found 3 days ago
$740
Roundtrip
found 3 days ago
Select Iberia flight, departing Tue, Aug 12 from Oslo to St. Louis, returning Thu, Jun 25, priced at $740 found 3 days ago
Flights from Oslo (OSL) to St. Louis (STL)
Origin airport
Gardermoen
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Air Canada, Austrian Airlines, British Airways, Brussels Airlines, Finnair, Iberia, Lufthansa, Scandinavian Airlines, Virgin Atlantic
Roundtrip price
$471
Distance
4299 mi

Oslo to St. Louis Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Oslo 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 Oslo 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 Oslo to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $508 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 Oslo 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 Oslo 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.

 

Frequently asked questions

How much does a flight from Gardermoen Airport (OSL) to Lambert-St. Louis Intl. Airport (STL) cost?
Lock in a cheap one-way flight from $508 or cheap return flight from $472 from Gardermoen Airport (OSL) to Lambert-St. Louis Intl. Airport (STL) 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 Gardermoen Airport (OSL) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from OSL to STL is September, when demand is low. Off-peak months are usually when airlines offer better prices between these airports.
What is the cheapest airline that flies from Gardermoen Airport (OSL) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline that'll fly you from OSL to STL, use Expedia's filter tool. Customize 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 list the most affordable options first.
How many flights per day from Gardermoen Airport (OSL) to Lambert-St. Louis Intl. Airport (STL)?
There are no daily nonstop flights departing from Gardermoen Airport (OSL) to Lambert-St. Louis Intl. Airport (STL). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from OSL to STL?
Typically you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* However, this can vary 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 Gardermoen Airport (OSL) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the Gardermoen Airport (OSL) to Lambert-St. Louis Intl. Airport (STL) route, aim to fly before 3 PM. Departures after this time 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 Gardermoen Airport (OSL) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your flight from OSL to STL shortly before your journey is usually more expensive. But if there's some wiggle room with your departure dates and times, you could land a cheap last-minute fare.
Is it cheaper to book an OSL to STL flight and hotel package?
You'll typically save money by securing an OSL to STL flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've selected your preferred flights and accommodations, consider adding extras including car rentals, tours and activities.
Can I cancel or change the date of my flight from Gardermoen Airport (OSL) to Lambert-St. Louis Intl. Airport (STL)?
Typically, you can reschedule or cancel your OSL 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 fees and policies on flight changes, or if you'd like further information, go to our Customer Service portal.

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*Available to One Key members.