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Oslo

$421+ Cheap flights from St. Louis (STL) to Oslo

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — OSL
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
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 23, 2025.

This United Airlines deal was found by Cheapflights users on 12/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/278:15 amSTL - OSL
2 stops32h 25mUnited Airlines
Mon 12/292:05 pmOSL - STL
2 stops34h 49mUnited Airlines
Deal found 12/23$1,049
This Air France deal was found by Cheapflights users on 12/22. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:59 pmSTL - OSL
2 stops15h 21mMultiple Airlines
Sun 12/286:30 amOSL - STL
2 stops17h 31mMultiple Airlines
Deal found 12/22$1,110
This KAYAK deal was found by Cheapflights users on 12/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/263:50 pmSTL - OSL
1 stop14h 15mLufthansa
Sun 12/289:35 amOSL - STL
2 stops19h 08mLufthansa
Deal found 12/22$1,375

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 23, 2025.

Round-trip from

$514
(oojo)

One-way from

$421
(United Airlines)

Popular in

July

Cheapest in

November

Average price

$747
From Lambert-St Louis to Oslo
Search Deals
One-way flight 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).
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Average for round-trip flights in December 2025
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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 23, 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

Fri 2/6

3:45 pm-1:50 pm

2 stops15h 05m

Oslo Gardermoen

Fri 2/13

9:25 am-11:23 pm

2 stops20h 58m

$518

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Wed 2/4

8:20 am-5:40 pm

2 stops26h 20m

Oslo Gardermoen

Wed 2/11

11:50 am-10:58 pm

2 stops18h 08m

$529

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Thu 2/5

3:31 pm-11:50 am

2 stops13h 19m

Oslo Gardermoen

Thu 2/12

6:30 am-5:42 pm

2 stops18h 12m

$532

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Mon 2/23

6:55 pm-5:40 pm

2 stops15h 45m

Oslo Gardermoen

Fri 2/27

6:15 am-5:45 pm

2 stops18h 30m

$610

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Thu 2/5

6:40 pm-5:40 pm

2 stops16h 00m

Oslo Gardermoen

Thu 2/12

11:50 am-12:05 am

3 stops19h 15m

$919

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sat 12/27

8:15 am-11:40 pm

2 stops32h 25m

Oslo Gardermoen

Mon 12/29

2:05 pm-5:54 pm

2 stops34h 49m

$1,049

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Fri 2/6

9:40 am-11:35 am

3 stops18h 55m

Oslo Gardermoen

Fri 2/13

1:10 pm-11:25 pm

2 stops17h 15m

$1,160

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Fri 12/26

3:50 pm-1:05 pm

1 stop14h 15m

Oslo Gardermoen

Sun 12/28

9:35 am-9:43 pm

2 stops19h 08m

$1,375

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Fri 12/26

4:05 pm-8:00 am

3 stops32h 55m

Oslo Gardermoen

Sun 12/28

6:15 pm-4:27 pm

3 stops29h 12m

$2,385

St. LouisOslo

STL - TRF

STLTRF

Lambert-St Louis

Sun 4/12

3:58 pm-2:30 pm

2 stops15h 32m

Oslo Sandefjord

Sat 4/18

6:00 am-11:38 pm

2 stops24h 38m

$3,518

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/23

Showing 1-10 of 13 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.

What is the cheapest time of day to fly from STL to OSL?

Find hourly flight availability from St. Louis to Oslo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2025.

A simple way to save on the total cost of your ticket is to fly from St. Louis to Oslo at noon. If you’re flexible enough to do this you can expect to save up to 49% on your trip compared to booking a flight in the evening.

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 23, 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
8,015 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

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
8,015 reviews
Delta
7.9
Good
8,015 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

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
9,106 reviews
Delta
7.9
Good
8,015 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

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
11,051 reviews
Delta
7.9
Good
8,015 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

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
10,551 reviews
Delta
7.9
Good
8,015 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

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
7,649 reviews
Delta
7.9
Good
8,015 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

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 Delta, United Airlines, and KLM fly from St. Louis to Oslo in about 13h 19m. The time it takes to get you to your destination can typically vary by up to 13h 01m. 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 23, 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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