Oslo

$359+ 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 7/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — OSL
Mar 26 — Apr 21
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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 February 24, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:30 pm
STL
-
OSL
1 stop13h 50m
Lufthansa
Thu 8/276:45 am
OSL
-
STL
2 stops23h 42m
Lufthansa
Deal found 2/21$575
This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:49 pm
STL
-
OSL
2 stops20h 16m
Lufthansa
Mon 9/216:45 pm
OSL
-
STL
2 stops25h 40m
Lufthansa
Deal found 2/21$589
This United Airlines deal was found by Cheapflights users on 2/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/169:23 am
STL
-
OSL
2 stops24h 52m
United Airlines
Sun 8/236:25 am
OSL
-
STL
2 stops38h 37m
United Airlines
Deal found 2/22$591
This American Airlines deal was found by Cheapflights users on 2/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:03 pm
STL
-
OSL
2 stops16h 12m
American Airlines
Wed 4/1512:50 pm
OSL
-
STL
2 stops16h 27m
American Airlines
Deal found 2/22$592
This Delta deal was found by Cheapflights users on 2/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:25 pm
STL
-
OSL
2 stops20h 15m
Delta
Tue 4/146:30 am
OSL
-
STL
2 stops17h 20m
Delta
Deal found 2/21$593
This Cheapflightsfares deal was found by Cheapflights users on 2/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/163:30 pm
STL
-
OSL
1 stop19h 55m
Lufthansa
Sun 8/236:45 pm
OSL
-
STL
2 stops25h 40m
Lufthansa
Deal found 2/22$595
This United Airlines deal was found by Cheapflights users on 2/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/163:30 pm
STL
-
OSL
1 stop19h 55m
United Airlines
Sat 8/229:55 am
OSL
-
STL
2 stops19h 11m
United Airlines
Deal found 2/22$600
This Finnair deal was found by Cheapflights users on 2/22. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:00 am
STL
-
OSL
2 stops27h 35m
Multiple Airlines
Mon 4/68:30 pm
OSL
-
STL
2 stops30h 00m
Multiple Airlines
Deal found 2/22$607
This Trip.com deal was found by Cheapflights users on 2/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/83:30 pm
STL
-
OSL
1 stop17h 25m
Lufthansa
Wed 4/156:35 am
OSL
-
STL
1 stop13h 50m
Lufthansa
Deal found 2/22$621
This Flysmarter deal was found by Cheapflights users on 2/21. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/81:39 pm
STL
-
TRF
3 stops24h 31m
Multiple Airlines
Wed 4/156:25 pm
TRF
-
STL
3 stops27h 04m
Multiple Airlines
Deal found 2/21$1,016
This Expedia deal was found by Cheapflights users on 2/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:30 pm
STL
-
TRF
2 stops18h 00m
Scandinavian Airlines
Mon 9/216:00 am
TRF
-
STL
2 stops21h 50m
Scandinavian Airlines
Deal found 2/21$1,088
This Flysmarter deal was found by Cheapflights users on 2/23. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:59 pm
STL
-
TRF
3 stops34h 46m
Multiple Airlines
Fri 4/179:25 pm
TRF
-
STL
3 stops26h 17m
Multiple Airlines
Deal found 2/23$1,199

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 February 24, 2026.

Round-trip from

$591
(United Airlines)

One-way from

$359
(Priceline)

Popular in

June

Cheapest in

November

Average price

$796
From Lambert-St Louis to Oslo
One-way flight from Lambert-St Louis to Oslo
Highest demand for flights based on searches. 15% potential increase in price ($141 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Average for round-trip flights in February 2026

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 February 24, 2026.
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

Sun 8/16

9:13 am-10:05 pm

2 stops29h 52m

Oslo Gardermoen

Sat 8/22

9:55 am-10:06 pm

2 stops19h 11m

$592

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Wed 4/1

6:00 am-4:35 pm

2 stops27h 35m

Oslo Gardermoen

Mon 4/6

8:30 pm-7:30 pm

2 stops30h 00m

$607

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 8/16

3:30 pm-3:35 pm

1 stop17h 05m

Oslo Gardermoen

Sat 8/22

7:15 pm-1:25 pm

1 stop25h 10m

$630

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sat 8/15

6:49 pm-5:15 pm

2 stops39h 26m

Oslo Gardermoen

Sat 8/29

6:15 am-6:09 pm

2 stops18h 54m

$650

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Fri 4/10

12:27 pm-4:20 pm

2 stops20h 53m

Oslo Gardermoen

Fri 4/17

7:50 am-7:33 pm

2 stops18h 43m

$674

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Thu 5/14

1:00 pm-5:15 pm

2 stops21h 15m

Oslo Gardermoen

Wed 5/27

6:35 am-8:05 pm

2 stops20h 30m

$687

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 7/5

12:10 pm-3:35 pm

2 stops20h 25m

Oslo Gardermoen

Tue 7/14

1:10 pm-1:25 pm

1 stop31h 15m

$810

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 7/5

9:40 am-11:40 pm

2 stops31h 00m

Oslo Gardermoen

Sat 7/11

1:35 pm-11:42 pm

2 stops17h 07m

$833

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Fri 6/26

1:13 pm-10:55 am

2 stops14h 42m

Oslo Gardermoen

Wed 7/15

6:35 am-1:25 pm

1 stop13h 50m

$923

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Fri 6/26

9:35 pm-10:20 pm

1 stop17h 45m

Oslo Gardermoen

Wed 7/15

11:35 am-7:30 pm

1 stop14h 55m

$1,011

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/23

Showing 1-10 of 16 results
1
2

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, February is the cheapest month in which you can book a flight from St. Louis to Oslo (average of $507). Flying from St. Louis to Oslo in June is currently the most expensive (average of $946). 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 February 24, 2026.
Peruse reviews from past customers who have flown with Delta, KLM, and United 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.

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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.

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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.

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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.

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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.

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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.

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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 United Airlines, Lufthansa, and Scandinavian Airlines fly from St. Louis to Oslo in about 15h 48m. The time it takes to get you to your destination can typically vary by up to 14h 04m. The distance from St. Louis to Oslo is about 4306 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?

    United Airlines, at $542, was found to be the cheapest airline from St. Louis to Oslo.Alternate airlines to your destination round-trip include Lufthansa and Delta. United Airlines is 28% 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, February is the cheapest month in which you can book a flight from St. Louis to Oslo (average of $507). Flying from St. Louis to Oslo in June is currently the most expensive (average of $946). 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.

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 February 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$542Average$822FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$589Average$805FlexibilityNo cancel feeOn-time76%
DeltaCheapest$625Average$884FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$656Average$719FlexibilityNo cancel feeOn-time70%
KLMCheapest$685Average$711FlexibilityNo cancel feeOn-time75%

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