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Oslo

$514+ Cheap flights from St. Louis (STL) to Oslo

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — OSL
Jan 28 — Feb 41
Wed 1/28
Wed 2/4
1 adult, Economy
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Cheap flight deals from St. Louis to Oslo

Cheapest flights from St. Louis to Oslo
Explore the most affordable flight options available from St. Louis to Oslo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 29, 2025.

This KLM deal was found by Cheapflights users on 12/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:47 amSTL - OSL
2 stops15h 53mKLM
Thu 1/112:40 pmOSL - STL
2 stops17h 58mKLM
Deal found 12/27$3,078
This Gotogate deal was found by Cheapflights users on 12/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:05 pmSTL - OSL
2 stops16h 55mLufthansa
Thu 1/14:35 pmOSL - STL
1 stop28h 20mLufthansa
Deal found 12/27$3,853

Find flight deals from St. Louis to Oslo

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Oslo (OS1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 29, 2025.

Round-trip from

$514
(oojo)

Popular in

July

Cheapest in

November

Average price

$747
From Lambert-St Louis to Oslo
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($208 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Oslo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 29, 2025.
Use the filters below to find and compare flights from St. Louis to Oslo that are best for you.

Fly from

St. Louis

Fly to

Oslo

Route

Depart

Return

Price

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Tue 2/10

5:04 pm-10:40 pm

2 stops22h 36m

Oslo Gardermoen

Tue 2/17

7:20 am-10:09 pm

2 stops21h 49m

$514

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Thu 1/29

8:30 am-11:00 am

2 stops19h 30m

Oslo Gardermoen

Mon 2/2

6:15 am-3:29 pm

2 stops40h 14m

$524

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Wed 2/11

11:55 am-4:35 pm

2 stops21h 40m

Oslo Gardermoen

Wed 2/18

8:50 pm-7:29 pm

2 stops29h 39m

$529

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 1/11

6:40 pm-5:40 pm

2 stops40h 00m

Oslo Gardermoen

Tue 1/27

6:15 am-11:59 pm

2 stops24h 44m

$590

St. LouisOslo

STL - TRF

STLTRF

Lambert-St Louis

Tue 6/16

3:30 pm-9:10 pm

2 stops46h 40m

Oslo Sandefjord

Tue 8/18

3:30 pm-1:25 pm

2 stops28h 55m

$985

St. LouisOslo

STL - TRF

STLTRF

Lambert-St Louis

Fri 5/29

3:30 pm-6:35 pm

2 stops20h 05m

Oslo Sandefjord

Sat 6/6

12:10 pm-1:25 pm

2 stops32h 15m

$1,218

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Tue 2/10

6:40 pm-5:40 pm

2 stops16h 00m

Oslo Gardermoen

Tue 2/17

6:15 am-5:44 pm

3 stops18h 29m

$1,311

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Tue 2/10

11:22 am-5:10 pm

3 stops22h 48m

Oslo Gardermoen

Tue 2/17

4:00 pm-6:11 pm

3 stops33h 11m

$1,415

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 1/11

4:05 pm-5:55 pm

2 stops18h 50m

Oslo Gardermoen

Tue 1/27

12:40 pm-1:55 pm

3 stops32h 15m

$1,911

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Wed 12/31

9:47 am-8:40 am

2 stops15h 53m

Oslo Gardermoen

Thu 1/1

12:40 pm-11:38 pm

2 stops17h 58m

$3,078

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 12 results
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Best time to book a flight from St. Louis to Oslo

Have a flexible travel schedule? Discover the best time to fly to Oslo from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from St. Louis to Oslo?

Currently, December is the cheapest month in which you can book a flight from St. Louis to Oslo (average of $559). Flying from St. Louis to Oslo in June is currently the most expensive (average of $947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from St. Louis to Oslo?

Reviews of airlines servicing Oslo

Get insights into the airlines that provide service to Oslo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Oslo. Reviews last updated December 29, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from St. Louis to Oslo to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,017 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,017 reviews
Delta
7.9
Good
8,017 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,115 reviews
Delta
7.9
Good
8,017 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,071 reviews
Delta
7.9
Good
8,017 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,563 reviews
Delta
7.9
Good
8,017 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,659 reviews
Delta
7.9
Good
8,017 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Oslo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Oslo?

    If you book a flight to Oslo from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 0 flights from Lambert-St Louis to Oslo per day from 5 different airlines.

  • How long is the flight from St. Louis to Oslo?

    Airlines like British Airways, United Airlines, and Lufthansa fly from St. Louis to Oslo in about 19h 30m. The time it takes to get you to your destination can typically vary by up to 20h 30m. The distance from St. Louis to Oslo is about 4296 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from St. Louis to Oslo round-trip?

    Lufthansa, at $581, was found to be the cheapest airline from St. Louis to Oslo.Alternate airlines to your destination round-trip include American Airlines and Delta. Lufthansa is 27% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from St. Louis to Oslo that include hotel bookings?

    Yes. In addition to deals on St. Louis to Oslo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Oslo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Oslo.

  • Can I find deals for business class flights from St. Louis to Oslo?

    Yes. Cheapflights offers flight deals from St. Louis to Oslo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Oslo?

    Currently, December is the cheapest month in which you can book a flight from St. Louis to Oslo (average of $559). Flying from St. Louis to Oslo in June is currently the most expensive (average of $947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for St. Louis to Oslo

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Oslo Gardermoen flights
St. Louis to Oslo Gardermoen flights
St. Louis to Bergen flights
Kansas City to Bergen flights
Kansas City to Sandefjord flights

Top 5 airlines flying from St. Louis to Oslo

Discover the top 5 airlines that operate flights from St. Louis to Oslo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$581Average$834FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$586Average$857FlexibilityNo cancel feeOn-time71%
DeltaCheapest$625Average$877FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$657Average$1,221FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$674Average$918FlexibilityNo cancel feeOn-time69%

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