Oslo

$479+ 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 3/29. Fares are subject to change and may not be available on all flights or dates of travel.
STL — OSL
Mar 14 — Mar 211
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Oslo with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 12, 2026.

This Sembo deal was found by Cheapflights users on 2/9. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/296:35 pm
STL
-
OSL
2 stops16h 20m
Multiple Airlines
Tue 4/149:55 am
OSL
-
STL
2 stops36h 29m
Multiple Airlines
Deal found 2/9$479
This Ticket deal was found by Cheapflights users on 2/9. 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.
Sun 3/293:30 pm
STL
-
OSL
1 stop13h 50m
Lufthansa
Tue 4/146:55 am
OSL
-
STL
2 stops21h 13m
Lufthansa
Deal found 2/9$489
This Flysmarter deal was found by Cheapflights users on 2/9. 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.
Sun 3/299:10 am
STL
-
OSL
2 stops25h 05m
Air Canada
Tue 4/149:55 am
OSL
-
STL
2 stops19h 33m
Air Canada
Deal found 2/9$547
This oojo deal was found by Cheapflights users on 2/12. 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.
Sun 11/88:40 am
STL
-
OSL
2 stops31h 00m
British Airways
Sun 11/158:50 pm
OSL
-
STL
2 stops32h 39m
British Airways
Deal found 2/12$574
This Mytrip deal was found by Cheapflights users on 2/12. 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.
Sun 11/83:50 pm
STL
-
OSL
1 stop14h 15m
Multiple Airlines
Sun 11/156:15 am
OSL
-
STL
2 stops16h 15m
Multiple Airlines
Deal found 2/12$577
This Priceline deal was found by Cheapflights users on 2/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:21 pm
STL
-
OSL
2 stops16h 14m
Finnair
Sun 4/128:35 am
OSL
-
STL
2 stops20h 42m
Finnair
Deal found 2/9$582
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Fri 3/204:05 pm
STL
-
OSL
2 stops25h 15m
United Airlines
Tue 4/79:55 am
OSL
-
STL
2 stops19h 33m
United Airlines
Deal found 2/10$583
This United Airlines deal was found by Cheapflights users on 2/12. 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 11/810:23 am
STL
-
OSL
2 stops23h 47m
United Airlines
Sun 11/156:15 am
OSL
-
STL
1 stop14h 40m
United Airlines
Deal found 2/12$584
This Priceline deal was found by Cheapflights users on 2/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/241:30 pm
STL
-
OSL
2 stops22h 10m
British Airways
Sun 9/68:35 am
OSL
-
STL
2 stops16h 54m
British Airways
Deal found 2/10$586
This FlightHub deal was found by Cheapflights users on 2/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/83:50 pm
STL
-
OSL
1 stop14h 15m
Lufthansa
Sun 11/156:15 am
OSL
-
STL
1 stop14h 40m
Lufthansa
Deal found 2/12$589
This Expedia deal was found by Cheapflights users on 2/10. 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.
Mon 8/243:30 pm
STL
-
OSL
1 stop16h 55m
Multiple Airlines
Sun 9/68:35 am
OSL
-
STL
2 stops16h 54m
Multiple Airlines
Deal found 2/10$591
This Mytrip deal was found by Cheapflights users on 2/9. 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.
Sun 3/293:30 pm
STL
-
TRF
2 stops15h 00m
Multiple Airlines
Tue 4/143:05 pm
TRF
-
STL
3 stops29h 20m
Multiple Airlines
Deal found 2/9$1,084

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 12, 2026.

Round-trip from

$479
(Sembo)

Popular in

June

Cheapest in

November

Average price

$796
From Lambert-St Louis to Oslo
Highest demand for flights based on searches. 16% potential increase in price ($148 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 12, 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 3/29

6:35 pm-5:55 pm

2 stops16h 20m

Oslo Gardermoen

Tue 4/14

9:55 am-3:24 pm

2 stops36h 29m

$479

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 3/29

3:30 pm-12:20 pm

1 stop13h 50m

Oslo Gardermoen

Tue 4/14

6:55 am-9:08 pm

2 stops21h 13m

$489

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 3/29

9:10 am-5:15 pm

2 stops25h 05m

Oslo Gardermoen

Tue 4/14

9:55 am-10:28 pm

2 stops19h 33m

$547

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Wed 4/8

5:21 pm-4:35 pm

2 stops16h 14m

Oslo Gardermoen

Sun 4/12

8:35 am-10:17 pm

2 stops20h 42m

$582

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Fri 3/20

4:05 pm-11:20 pm

2 stops25h 15m

Oslo Gardermoen

Tue 4/7

9:55 am-10:28 pm

2 stops19h 33m

$583

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sat 3/28

7:00 pm-4:15 pm

2 stops39h 15m

Oslo Gardermoen

Sat 4/4

1:05 pm-10:28 pm

2 stops40h 23m

$603

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Mon 4/6

5:25 pm-4:20 pm

2 stops15h 55m

Oslo Gardermoen

Fri 4/10

9:20 am-11:25 pm

2 stops21h 05m

$646

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Wed 4/8

4:05 pm-11:00 pm

2 stops23h 55m

Oslo Gardermoen

Sun 4/12

6:25 am-1:25 pm

1 stop14h 00m

$660

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Tue 2/24

8:30 am-11:00 am

2 stops19h 30m

Oslo Gardermoen

Sat 2/28

9:35 am-7:14 pm

2 stops16h 39m

$665

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Fri 3/27

4:05 pm-1:50 pm

2 stops39h 45m

Oslo Gardermoen

Fri 4/3

7:10 am-10:27 pm

2 stops22h 17m

$669

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 13 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 12, 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

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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

Comfort

7.9

Overall

7.9

Crew

8.5

Entertainment

7.8

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 Lufthansa, Air Canada, and Finnair fly from St. Louis to Oslo in about 13h 50m. The time it takes to get you to your destination can typically vary by up to 11h 15m. 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 Delta. United Airlines 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, 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$542Average$868FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$589Average$805FlexibilityNo cancel feeOn-time76%
DeltaCheapest$625Average$884FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$649Average$685FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$656Average$719FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.