Oslo

$322+ 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — OSL
Jul 29 — Aug 51
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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 June 29, 2026.

This Ticket deal was found by Cheapflights users on 6/26. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:05 pm
STL
-
OSL
2 stops15h 50m
Lufthansa
Tue 8/256:55 am
OSL
-
STL
1 stop13h 30m
Lufthansa
Deal found 6/26$757
This Ticket deal was found by Cheapflights users on 6/27. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/101:13 pm
STL
-
OSL
2 stops15h 22m
Multiple Airlines
Tue 8/256:55 am
OSL
-
STL
1 stop13h 30m
Multiple Airlines
Deal found 6/27$774
This Ticket deal was found by Cheapflights users on 6/27. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/102:40 pm
STL
-
OSL
2 stops38h 35m
Air Canada
Tue 8/251:10 pm
OSL
-
STL
2 stops36h 32m
Air Canada
Deal found 6/27$777
This Ticket deal was found by Cheapflights users on 6/27. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1011:00 am
STL
-
OSL
2 stops14h 45m
KLM
Tue 8/2511:50 am
OSL
-
STL
2 stops15h 52m
KLM
Deal found 6/27$779
This Gotogate deal was found by Cheapflights users on 6/27. 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 8/1912:10 pm
STL
-
OSL
2 stops22h 05m
Multiple Airlines
Wed 8/266:35 am
OSL
-
STL
1 stop13h 50m
Multiple Airlines
Deal found 6/27$793
This oojo deal was found by Cheapflights users on 6/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/193:30 pm
STL
-
OSL
1 stop13h 45m
Lufthansa
Wed 8/266:35 am
OSL
-
STL
1 stop13h 50m
Lufthansa
Deal found 6/27$797
This United Airlines deal was found by Cheapflights users on 6/29. 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 8/1612:59 pm
STL
-
OSL
2 stops21h 56m
United Airlines
Wed 8/266:35 am
OSL
-
STL
1 stop13h 50m
United Airlines
Deal found 6/29$809
This Air Canada deal was found by Cheapflights users on 6/29. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:10 pm
STL
-
OSL
2 stops22h 45m
Air Canada
Wed 8/266:35 am
OSL
-
STL
2 stops19h 07m
Air Canada
Deal found 6/29$810
This United Airlines deal was found by Cheapflights users on 6/29. 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.
Mon 8/173:30 pm
STL
-
OSL
1 stop16h 55m
United Airlines
Wed 8/266:35 am
OSL
-
STL
1 stop13h 50m
United Airlines
Deal found 6/29$816
This Air Canada deal was found by Cheapflights users on 6/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/192:40 pm
STL
-
TRF
2 stops16h 50m
Multiple Airlines
Wed 8/266:00 am
TRF
-
STL
2 stops19h 42m
Multiple Airlines
Deal found 6/27$1,074
This Mytrip deal was found by Cheapflights users on 6/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/103:30 pm
STL
-
TRF
3 stops25h 55m
Multiple Airlines
Tue 8/256:00 am
TRF
-
STL
3 stops21h 24m
Multiple Airlines
Deal found 6/27$1,083
This Air Canada deal was found by Cheapflights users on 6/29. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/262:40 pm
STL
-
TRF
2 stops16h 50m
Multiple Airlines
Tue 9/86:00 am
TRF
-
STL
2 stops21h 20m
Multiple Airlines
Deal found 6/29$1,128

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 June 29, 2026.

Round-trip from

$757
(Ticket)

One-way from

$322
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$1,165
From Lambert-St Louis to Oslo
One-way flight from Lambert-St Louis to Oslo
Highest demand for flights based on searches. 21% potential increase in price ($206 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Average for round-trip flights in June 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 June 29, 2026.
Use the filters below to find and compare flights from St. Louis to Oslo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Mon 8/10

7:05 pm-5:55 pm

2 stops15h 50m

Oslo Gardermoen

Tue 8/25

6:55 am-5:06 pm

2 stops17h 11m

$762

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Tue 8/11

12:59 pm-6:00 pm

2 stops22h 01m

Oslo Gardermoen

Tue 8/18

11:45 am-2:15 pm

2 stops57h 30m

$836

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Mon 8/10

3:30 pm-6:20 pm

1 stop19h 50m

Oslo Gardermoen

Tue 8/25

6:55 am-1:25 pm

1 stop13h 30m

$856

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Mon 9/7

3:30 pm-12:20 pm

1 stop13h 50m

Oslo Gardermoen

Mon 9/14

7:05 pm-1:25 pm

1 stop25h 20m

$866

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Mon 8/24

3:30 pm-6:20 pm

1 stop19h 50m

Oslo Gardermoen

Wed 9/9

6:35 am-1:25 pm

1 stop13h 50m

$866
Quickest round-trip

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Tue 8/18

3:30 pm-12:15 pm

1 stop13h 45m

Oslo Gardermoen

Tue 9/1

6:55 am-1:25 pm

1 stop13h 30m

$866

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Fri 8/14

3:30 pm-6:35 pm

1 stop20h 05m

Oslo Gardermoen

Tue 9/1

6:55 am-1:25 pm

1 stop13h 30m

$916

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 8/9

7:05 pm-10:05 pm

2 stops20h 00m

Oslo Gardermoen

Sun 8/16

6:25 am-10:00 pm

2 stops22h 35m

$929

St. LouisOslo

STL - TRF

STLTRF

Lambert-St Louis

Wed 8/19

2:40 pm-2:30 pm

2 stops16h 50m

Oslo Sandefjord

Wed 8/26

6:00 am-6:42 pm

2 stops19h 42m

$1,074

St. LouisOslo

STL - TRF

STLTRF

Lambert-St Louis

Mon 8/10

3:30 pm-12:25 am

3 stops25h 55m

Oslo Sandefjord

Tue 8/25

6:00 am-8:24 pm

3 stops21h 24m

$1,083

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/25

Showing 1-10 of 27 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from St. Louis to Oslo (average of $478). Flying from St. Louis to Oslo in June is currently the most expensive (average of $1,121). 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 June 29, 2026.
Peruse reviews from past customers who have flown with KLM,United Airlines, andLufthansa 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.

Crew

8.4

Overall

7.8

Entertainment

7.2

Comfort

7.7

Food

7.3

Boarding

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Crew

8.4

Overall

7.8

Entertainment

7.2

Comfort

7.7

Food

7.3

Boarding

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Crew

8.4

Overall

7.8

Entertainment

7.2

Comfort

7.7

Food

7.3

Boarding

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Crew

8.4

Overall

7.8

Entertainment

7.2

Comfort

7.7

Food

7.3

Boarding

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Crew

8.4

Overall

7.8

Entertainment

7.2

Comfort

7.7

Food

7.3

Boarding

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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 4 different airlines.

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

    Airlines like Lufthansa, Air Canada, and KLM fly from St. Louis to Oslo in about 14h 45m. The time it takes to get you to your destination can typically vary by up to 23h 50m. 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?

    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 British Airways. United Airlines is 29% 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 $478). Flying from St. Louis to Oslo in June is currently the most expensive (average of $1,121). 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

Browse thousands of different options on Cheapflights for your next trip

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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 4 airlines flying from St. Louis to Oslo

Discover the top 4 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 June 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$542Average$674FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$581Average$839FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$656Average$719FlexibilityNo cancel feeOn-time70%
KLMCheapest$685Average$794FlexibilityNo cancel feeOn-time75%

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