HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$877+ Cheap flights from Cologne (CGN) to St. Louis (STL)

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 7/31. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — STL
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Cologne to St. Louis 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 Cologne to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Cologne (CGN) to St. Louis (STL). 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 18, 2025.

Round-trip from

$877
(United Airlines)
From Cologne Köln/Bonn to Lambert-St Louis
Search Deals

Find flight deals from Cologne to St. Louis

Cheapest flights from Cologne to St. Louis
Explore the most affordable flight options available from Cologne to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

This United Airlines deal was found by Cheapflights users on 6/16. 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.
Thu 7/316:05 amCGN - STL
2 stops35h 35mUnited Airlines
Thu 8/78:25 amSTL - CGN
2 stops20h 50mUnited Airlines
Deal found 6/16$877
This Gotogate deal was found by Cheapflights users on 6/18. 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.
Sat 8/26:05 amCGN - STL
2 stops44h 55mAir Canada
Sat 8/91:30 pmSTL - CGN
2 stops38h 40mAir Canada
Deal found 6/18$1,083
This Mytrip deal was found by Cheapflights users on 6/18. 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.
Sat 8/27:05 amCGN - STL
2 stops19h 40mMultiple Airlines
Sat 8/99:15 amSTL - CGN
3 stops27h 50mMultiple Airlines
Deal found 6/18$1,716

Cheapflights Fare Finder

Customize your flight search to find flights from Cologne to St. Louis 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 18, 2025.
Use the filters below to find and compare flights from Cologne to St. Louis that are best for you.

Fly from

Cologne

Fly to

St. Louis

Route

Depart

Return

Price

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Thu 7/31

6:05 am-10:40 am

2 stops35h 35m

Lambert-St Louis

Thu 8/7

8:25 am-12:15 pm

2 stops20h 50m

$877

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Sat 8/2

6:05 am-8:00 pm

2 stops44h 55m

Lambert-St Louis

Sat 8/9

1:30 pm-11:10 am

2 stops38h 40m

$1,083

CologneSt. Louis

CGN - STL

CGNSTL

Cologne Köln/Bonn

Sat 8/2

7:05 am-7:45 pm

2 stops19h 40m

Lambert-St Louis

Sat 8/9

9:15 am-8:05 pm

3 stops27h 50m

$1,716

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Best time to book a flight from Cologne to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Cologne 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 Cologne to St. Louis

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

Currently, August is the cheapest month in which you can book a flight from Cologne to St. Louis (average of $311). Flying from Cologne to St. Louis in March is currently the most expensive (average of $356). 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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated June 18, 2025.
United Airlines
7.4
Good
8,810 reviews

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.0

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,810 reviews
United Airlines
7.4
Good
8,810 reviews

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.0

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Air Canada
7.1
Good
9,573 reviews
United Airlines
7.4
Good
8,810 reviews

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.0

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Related info for your journey

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Cologne to St. Louis 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 Cologne to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Cologne to St. Louis (average of $311). Flying from Cologne to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near Cologne?

Book flights to Cologne if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Festus
Alton
Farmington

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 Cologne to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Frankfurt to St. Louis flights
Frankfurt to Kansas City flights
Munich to Kansas City flights
Berlin to St. Louis flights
Hannover to St. Louis flights
Munich to St. Louis flights
Duesseldorf Intl to Kansas City flights
Stuttgart to St. Louis flights
Duesseldorf Intl to St. Louis flights
Frankfurt to Springfield flights
Hamburg to Kansas City flights
Hannover to Kansas City flights
Nuremberg to St. Louis flights
Nuremberg to Kansas City flights
Stuttgart to Kansas City flights
Hamburg to St. Louis flights
Duesseldorf Intl to Springfield flights
Leipzig to Kansas City flights
Dortmund to Kansas City flights
Dresden to Kansas City flights
Cologne to Kansas City flights
Bremen to Kansas City flights

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.