STL - OSL

$479 Find Cheap Flights from St. Louis to Oslo

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Oslo departing on 3/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Oslo Gardermoen Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Oslo, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Oslo, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$479
Overall average: $649
Multiple Airlines
Sun 3/29Tue 4/14
STL - OSL • 2 stops
Cheapest one-way
Multiple Airlines
Wed 2/11
STL - OSL • multi-stop
Top airlines
Lufthansa
Cheapest • from $489 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 18% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Oslo!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Oslo that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Oslo

Sun, Mar 29 - Tue, Apr 14
Multiple Airlines Logo
6:35 pm - 5:55 pm
STL
-
OSL
16h 20m
2 stops
Multiple Airlines Logo
9:55 am - 3:24 pm
OSL
-
STL
36h 29m
2 stops
$479Multiple Airlines
Sun, Mar 29 - Tue, Apr 14
Lufthansa Logo
3:30 pm - 12:20 pm
STL
-
OSL
13h 50m
1 stop
Lufthansa Logo
6:55 am - 9:08 pm
OSL
-
STL
21h 13m
2 stops
$489Lufthansa
Sun, Mar 29 - Tue, Apr 14
Lufthansa Logo
3:30 pm - 12:20 pm
STL
-
OSL
13h 50m
1 stop
Lufthansa Logo
7:00 pm - 1:25 pm
OSL
-
STL
25h 25m
1 stop
$505Lufthansa
Sun, Mar 29 - Tue, Apr 7
Lufthansa Logo
6:35 pm - 5:55 pm
STL
-
OSL
16h 20m
2 stops
Lufthansa Logo
6:55 am - 9:08 pm
OSL
-
STL
21h 13m
2 stops
$509Lufthansa
Sun, Mar 29 - Tue, Apr 7
Lufthansa Logo
3:30 pm - 6:25 pm
STL
-
OSL
19h 55m
1 stop
Lufthansa Logo
6:55 am - 9:08 pm
OSL
-
STL
21h 13m
2 stops
$516Lufthansa
Sun, Mar 29 - Tue, Apr 14
Air Canada Logo
9:10 am - 5:15 pm
STL
-
OSL
25h 05m
2 stops
Air Canada Logo
9:55 am - 10:28 pm
OSL
-
STL
19h 33m
2 stops
$547Air Canada
Sun, Mar 29 - Tue, Apr 7
Lufthansa Logo
3:30 pm - 12:20 pm
STL
-
OSL
13h 50m
1 stop
Lufthansa Logo
7:00 pm - 1:25 pm
OSL
-
STL
25h 25m
1 stop
$549Lufthansa
Wed, Mar 25 - Wed, Apr 1
United Airlines Logo
2:50 pm - 5:40 pm
STL
-
OSL
20h 50m
2 stops
United Airlines Logo
6:35 am - 1:25 pm
OSL
-
STL
13h 50m
1 stop
$556United Airlines
Wed, Mar 25 - Wed, Apr 1
Lufthansa Logo
4:50 pm - 3:20 pm
STL
-
OSL
16h 30m
1 stop
Lufthansa Logo
6:35 am - 1:25 pm
OSL
-
STL
13h 50m
1 stop
$564Lufthansa
Wed, Mar 25 - Wed, Apr 1
United Airlines Logo
2:50 pm - 5:40 pm
STL
-
OSL
20h 50m
2 stops
United Airlines Logo
6:35 am - 9:47 pm
OSL
-
STL
22h 12m
2 stops
$566United Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Oslo flights

Get data-powered insights and trends into flights from St. Louis to Oslo to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from St. Louis to Oslo Gardermoen Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Oslo Gardermoen Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Oslo Gardermoen Airport is November, where tickets cost $617 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,054 and $949 respectively.

Good to know

Low seasonJanuary
Cheapest flight$479
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from St. Louis to Oslo

When to book flights from St. Louis to Oslo

Are your dates flexible? Find out the best times to travel from St. Louis to Oslo based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking St. Louis to Oslo flights

  • What is the cheapest flight from St. Louis to Oslo Gardermoen Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Oslo Gardermoen Airport was $479 for a round-trip ticket.

  • Do I need a passport to fly between St. Louis and Oslo?

    Yes, you’ll need a passport to travel to Oslo from St. Louis.

  • Which airports will I be using when flying from St. Louis to Oslo?

    St. Louis and Oslo are both served by 1 main airport. You will leave St. Louis from Lambert-St Louis and will be arriving at Oslo Gardermoen.

  • Which aircraft models fly most regularly from St. Louis to Oslo?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Oslo?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between St. Louis and Oslo, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Oslo, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from St. Louis to Oslo are Delta and KLM. With an average price for the route of $884 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $685 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from St. Louis to Oslo?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Oslo.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Oslo?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Oslo from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Oslo?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Oslo with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and OSL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Oslo?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Oslo from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from St. Louis to Oslo

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Oslo. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Oslo? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8180 reviews
7.9Comfort
7.8Entertainment
8.5Crew
8.1Boarding
7.2Food
Airline reviews

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

2.0 MediocreJaspreet, Feb 2026
SEA - SMF
Read more Delta reviews

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

This was one of the worst flights I’ve been on in years. I upgraded to comfort and had such an uncomfortable experience. The person next to me was oversized - which I understand - however, they took up their space and mine. I could only use about 50% of my seat space to not be physically touching this person the entire flight and there was no spatial awareness. I also could not use the seat outlet because their body was obstructing it. It was very inconvenient. Their body kept touching me repeatedly during the flight and I felt very uncomfortable. To pay more for an upgraded space and then not even being able to use it was highly disappointing.

No wheel chair as requested at Atlanta arrival on first flight.

Only freetext wifi was available in flight; browsing WiFi required payment. Since the seats had no in flight entertainment, Delta should revisit this policy on this longer flight.

Only water, tea or coffee served midflight, even to comfort seating. Man next to me needed two seats and took up a portion of my seat and Delta did nothing.

The flight was great as well as the airline staff

First class and monitors weren’t working for mine & my husbands. Eventually fixed, but quite annoyed as we bought first class. Also, No foot rests.

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

It was delayed but other than that it was great.

Got on the plane and sat there for an hour before departure.

Empty seats next to me - wish it had been for a longer flight!!

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Short flight, but no drink/snack service. The flights both going and coming were delayed.

Much better than Spirit. I was please by the easy fast check in and boarding

Check-in and in-flight staff were better than average. The seat was a fair size but too hard and not enough padding. The cushion/pillow provided is poor (thin and seems to be disposable ,it provides no effective cushioning or support). Food was OK-ish but no choice of inflight snacks and no easy place to get drinks other than water (I could ask for juice by intruding into the staff area at the back of the plane) Entertainment was very good actually. Overall better than I expected from a US-based airline (sorry!) but compared to ANA or Singapore it was so-so. (I live in Japan so they are my comparative airlines)

Everything was on time Will use united again for sure

Plane outlets in my row not working to charge phone. Staff response was, well it should be. Plug into seed for volume not working well. Had to find the sweet spot for plug in or it would shut off and on.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Fine not above and beyond as I had a connection that was delayed due to maintenance

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

Terrible. Our first time back on United for 10 years, the seats in Polaris class are small and uncomfortable. They have squished too many people in to get more $$$. The staff are not friendly and not wanting to accommodate. I asked for two salads rather than a main meal and was advised no we wont do that. Then asked what I would like for breakfast and given something else anyway. I will not be flying United International anytime soon.

Same thing as flight from Pheonix to Newark. Uograded and Promised extra leg room and when I got to the seat it had none.

Excellent service; they helped me reschedule so I can fly in an earlier flight

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

This flight was on time but since I missed the connecting flight I didn’t get my seat upgraded I paid for

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

There were only 2 toilets and one of them did not work in business class. We are not allowed to cross classes so had to wait in line to use the toilets!! The entertainment touch display was finicky and did not work all the time.

We missed our flight. There was not enough time built into the layover to get through immigration, customs, bagclaim, bag rechecking, and the long trip to another terminal and gate. Kayak really screwed up. We took the bus up to Wisconsin and then were picked up in Brookfield by private car. It was lucky we didnt miss the last bus out.

I tried both on line and by calling the Customer Service line to arrange for a special meal as i have food intolerances. I was under the impression from your service representative that I was successful. I was not. I cannot eat spicy foods and get very ill if i eat bell peppers. I could not eat either menu choice and no special meal was actually ordered. ( your representative tried to order it for a flight that did not have meal service!!! - found this out later). Your wonderful cabin crew managed to put together a fruit, salad, roll and cheese tray for me so I had something to eat. WHY WOULD YOU SERVE SPICY FOOD, WITH NO MILDER OPTION,ON AN INTERNATIONAL FLIGHT???

Crew was professional and great, flight was clean. However food was pathetic. I ordered a Hindu meal assuming no meat but they served chicken. Need to be very specific- Hindu meal should be categorize as Vegetarian - no meat or egg. Or it should be specific that we are serving meat.

Late flight Delays Poor service Poor staff Worst airline ever

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

Our Jackson, Mississippi to Dallas Fort Worth flight was delayed on 1/19/26.. This was changed to Jackson to Charlotte in the last minute because of this delay. This started some kind of disconnect between American Airlines and British Airways bookings. We could not go past the passport control in London Heathrow. I had to go to the counter and waited for more than 30 minutes to get a new boarding pass. Problems did not end there. Somehow our entire return flight was canceled by someone. I had to make several phone calls over several days to fix the problem – this was not easy from India. Looks like there was some kind of disconnect between two airlines or some agent did not do it right. I’m anxious to know what went wrong.

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

Getting the boarding passes between the BA and AA apps was very clunky.

The airline was not clear about a new departure time so we got to the airport early anyway. The flight left early which was great because of weather. The check in process was very easy and staff were friendly and helpful. The crew was great and our flight was very good.

Awful it always is unfortunately is the only way to fly direct to london

I travelled in business class and was disappointed by lack of service, curt and borderline rude time of the crew and to top it off, all of my luggage was delayed. It was like pulling teeth to even report the missing luggage and recover it the next day from the airport.

Plane was extremely delayed, but not all of it was BA fault (some was). Worst part was lack of room - this had as much space as an Allegiant flight. I thought transatlantic usually gave you an extra inch or two, but not this one. Entertainment system sporadically worked and didn’t have great options. Overhead bins are old and tiny, not as good as aunties new planes.

Everything you need to know for your flight from St. Louis to Oslo

Information on your arrival and departure airports