693 € Cheap Flights from St Louis to Oslo

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Flight deals from St Louis Airport to Oslo

Looking for a cheap last-minute deal or the best return flight from St Louis to Oslo? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from St Louis to Oslo

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Oslo flights are currently cheapest in September.

Alternative St Louis to Oslo routes

Looking for the cheapest, fastest or easiest route from St Louis to Oslo? You could fly into the following airports instead.

St Louis to Oslo: Flight information

The things to know before you go.
Cheapest flight found299 €
Cheapest month to flyMay

Finding cheap flights from St Louis to Oslo: Frequently asked questions

There are 2 airports in Oslo: Oslo Gardermoen and TORP Sandefjord.
The best price we found for a return flight from St Louis to Oslo is 693 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from St Louis to Oslo. But we found flights with one or more stops from 693 €.
As of March 2026, there are no flights flying from St Louis to Oslo.
The cheapest month to fly from St Louis to Oslo is usually April.
If you're flying from St Louis Airport, the cheapest airport near Oslo is Oslo Gardermoen – which is 37.1 km away from the centre of Oslo. We've found flights into this airport from 693 €.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Oslo on Sunday, 26 April 2026.
No airlines currently offer direct flights between St Louis Airport and Oslo. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Oslo but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Oslo is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around -2°C. July is typically the warmest month in Oslo, when it usually averages around 20°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging -9°C. The rainiest month is August.
Currently, Frontier Airlines offers the cheapest flight tickets to Oslo.

Flying from Lambert-St. Louis International Airport (STL) to Oslo: what you need to know

  • Oslo is six hours ahead of St Louis, where Lambert-St. Louis International Airport is located. Oslo runs on the UTC+1 timezone.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This will give you enough time to board your STL to Oslo flight.

  • Delays at security and check-in are more likely if you're flying during high season, so give yourself a little extra breathing room. A good rule of thumb for peak times? Arrive up to four hours early for international flights and two hours for domestic departures.

  • Whether you want to discover a new place along the way or just have a break, we make it easy to find plane tickets from STL to Oslo with a stopover. To see your options, deselect 'Direct flights only.' Frankfurt Airport (FRA) is a popular stop to make.

  • STL is around 16 kilometres from central St Louis. If you're catching a cab, driving or ride-sharing from the centre, it'll take 20 minutes or so to get there, depending on traffic conditions. If you're planning to take public transport, expect the trip time to be around 35 minutes.

  • Want a hassle-free start to your travels? Stay near STL. Whether you're taking an early flight from Lambert-St. Louis International Airport to Oslo or just don't like being rushed, these hotels are worth a look:

  • When it comes to Lambert-St. Louis International Airport's on-time performance, data shows 78.04% of flights arrive within the scheduled time frame.

  • You'll find STL at 10701 Lambert International Blvd..

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Oslo

  • 299 € is currently the lowest price for a one-way Lambert-St. Louis International Airport to Oslo flight. Return plane tickets start from 693 €. These fares can change based on demand.

  • Booking ahead of time is often the key to finding a cheap flight from STL to Oslo. Flight prices rise as demand increases, so the closer you get to departure, the more you'll likely pay.

  • Finding cheap tickets from Lambert-St. Louis International Airport to Oslo is more likely if you can be flexible with your travel dates. Try using the 'Whole month' search tool to get the lowest fares across every month and score an epic deal.

  • Snapping up a cheap flight from STL to Oslo couldn't be easier with Price Alerts. Simply set up one of these automatic notifications and we'll let you know when a cheaper option becomes available.

  • Tailor your trip with filters. Pick your ideal departure and arrival times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Fastest' or 'Best' flights from Lambert-St. Louis International Airport to Oslo.

Airports in Oslo

Oslo Airport Gardermoen (OSL)

  • The distance from Oslo Airport Gardermoen (OSL) to central Oslo is roughly 48 kilometres. It'll take you around 40 minutes to reach the centre driving.

  • Travelling to the centre on public transport takes around 30 minutes.

  • The last thing you need is a lengthy journey to your hotel if you're getting in late on a flight from Lambert-St. Louis International Airport to Oslo. Check in to one of these accommodation options near OSL instead:

  • Get on the fast track to adventure by picking up an Oslo Airport Gardermoen rental car. Grab a set of wheels from Budget, Hertz or Thrifty to explore Oslo and beyond.

  • Lock in the lowest price by reserving your vehicle from Oslo Airport Gardermoen about three weeks in advance of your flight from STL to Oslo.

Torp Sandefjord Airport (TRF)

  • Once your flight from Lambert-St. Louis International Airport to Oslo has touched down, you can make your way to the city centre in around 1 hour 30 minutes by car. Central Oslo is roughly 121 kilometres from Torp Sandefjord Airport (TRF).

  • The journey will take roughly 2 hours 20 minutes on public transport.

  • Following your STL to Oslo flight, settle in at a hotel near TRF. These are some great options that'll help you sink into relaxation mode:

  • Forget about public transport timetables or long cab lines. Grab a Torp Sandefjord Airport rental car and take your trip in whatever direction you choose. Compare rates and availability from Hertz, Sixt and Budget.

  • Avoid last-minute price surges. Booking your ride one week before your arrival at TRF can land you a better rate.

Best time to go to Oslo

  • Carefully consider your travel dates before securing your flight from Lambert-St. Louis International Airport to Oslo. The city comes alive during high season, but hotel rates are usually higher and attractions can get busy. Visit Oslo in low season if you prefer a more relaxed vibe.

  • The warmest month in Oslo is July, with temperatures ranging between 8ºC (46ºF) and 25ºC (77ºF). Lock in your Lambert-St. Louis International Airport to Oslo plane ticket then if that's the weather you find most pleasant.

  • Look for cheap tickets from STL to Oslo in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -14ºC (7ºF) and 1ºC (34ºF) on average.

More about Oslo

  • Start your Oslo trip right by choosing the perfect place to stay. As soon as you've booked your flight from Lambert-St. Louis International Airport to Oslo, check out our range of hotels including:

  • The Norwegian National Opera & Ballet and Viking Ship Museum are just two of the leading attractions to add to your Oslo travel itinerary. Continue your sightseeing adventures at Akershus Fortress.

Explore more of Norway

  • Bergen is just one of the many places in Norway waiting to be explored once you've taken in the sights of Oslo. Around 306 kilometres away to the west, popular attractions include Bryggen, Troldhaugen and Fish Market.

  • Around 386 kilometres north of Oslo, Trondheim is another essential stop in Norway. No visit is complete without checking out Ringve Museum, Rockheim and Stiftsgarden.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.