$461 Cheap Flights from St. Louis (STL) to Cologne (CGN)

View $461 flight on Wed, Feb 11, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Cologne - Bonn Airport (CGN)

Cheap Flights from St. Louis to Cologne (STL-CGN)

Prices were available within the past 7 days and start at $461 for one-way flights and $704 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Feb 11 - Wed, Feb 18
STL
St. Louis
CGN
Cologne
$704 Roundtrip, found 3 days ago
$704
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Feb 11 from St. Louis to Cologne, returning Wed, Feb 18, priced at $704 found 3 days ago
British Airways
Wed, Feb 11 - Wed, Feb 18
STL
St. Louis
CGN
Cologne
$706 Roundtrip, found 3 days ago
$706
Roundtrip
found 3 days ago
Select British Airways flight, departing Wed, Feb 11 from St. Louis to Cologne, returning Wed, Feb 18, priced at $706 found 3 days ago
British Airways
Wed, Apr 8 - Thu, Apr 16
STL
St. Louis
CGN
Cologne
$707 Roundtrip, found 20 hours ago
$707
Roundtrip
found 20 hours ago
Select British Airways flight, departing Wed, Apr 8 from St. Louis to Cologne, returning Thu, Apr 16, priced at $707 found 20 hours ago
American Airlines
Wed, Feb 11 - Wed, Feb 18
STL
St. Louis
CGN
Cologne
$709 Roundtrip, found 3 days ago
$709
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Feb 11 from St. Louis to Cologne, returning Wed, Feb 18, priced at $709 found 3 days ago
American Airlines
Wed, Feb 11 - Wed, Feb 18
STL
St. Louis
CGN
Cologne
$717 Roundtrip, found 3 days ago
$717
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Feb 11 from St. Louis to Cologne, returning Wed, Feb 18, priced at $717 found 3 days ago
American Airlines
Wed, Feb 11 - Wed, Feb 18
STL
St. Louis
CGN
Cologne
$722 Roundtrip, found 3 days ago
$722
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Feb 11 from St. Louis to Cologne, returning Wed, Feb 18, priced at $722 found 3 days ago
British Airways
Wed, Oct 22 - Tue, Nov 11
STL
St. Louis
CGN
Cologne
$735 Roundtrip, found 1 day ago
$735
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, Oct 22 from St. Louis to Cologne, returning Tue, Nov 11, priced at $735 found 1 day ago
United
Sun, Nov 30 - Wed, Dec 17
STL
St. Louis
QKL
Cologne
$814 Roundtrip, found 1 day ago
$814
Roundtrip
found 1 day ago
Select United flight, departing Sun, Nov 30 from St. Louis to Cologne, returning Wed, Dec 17, priced at $814 found 1 day ago
Air Canada
Sat, Nov 29 - Wed, Dec 17
STL
St. Louis
QKL
Cologne
$821 Roundtrip, found 1 day ago
$821
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sat, Nov 29 from St. Louis to Cologne, returning Wed, Dec 17, priced at $821 found 1 day ago
Lufthansa
Sun, Dec 7 - Thu, Dec 18
STL
St. Louis
QKL
Cologne
$833 Roundtrip, found 20 hours ago
$833
Roundtrip
found 20 hours ago
Select Lufthansa flight, departing Sun, Dec 7 from St. Louis to Cologne, returning Thu, Dec 18, priced at $833 found 20 hours ago

Alternative airports near Cologne

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Cologne - Bonn CGN. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $1,410
CGN
Cologne - Bonn
CheapestClosest
Average driving time to city center14 min
Flights from $1,410
Flights from St. Louis (STL) to Cologne (CGN)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Cologne - Bonn
Airlines serving
Air Canada, American Airlines, British Airways, Lufthansa, Turkish Airlines, United
Roundtrip price
$703
Distance
4495 mi

St. Louis to Cologne Flights

The cheapest times to fly from St. Louis to Cologne

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Cologne are during the month of February. You can find some of the cheapest flights from St. Louis to Cologne with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Cologne

Sunday is one of the best days to book for cheap flights from St. Louis to Cologne: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Cologne

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Cologne in 2025. You can also book with separate airlines for your outbound and return journeys, from $461 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Cologne flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Cologne airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Cologne - Bonn Airport (CGN) cost?
Discover the latest flight deals from STL to CGN by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from STL to CGN?
The cheapest flights from STL to CGN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from STL to CGN?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from STL to CGN. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Cologne - Bonn Airport (CGN)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Cologne - Bonn Airport (CGN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to CGN?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change depending on various factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Cologne - Bonn Airport (CGN)?
To arrive at Cologne - Bonn Airport (CGN) without delays, choose a flight that leaves from Lambert-St. Louis Intl. Airport (STL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Cologne - Bonn Airport (CGN) last-minute?
Holding off until right before your break to book your flight from STL to CGN generally means paying more. While it's possible to find some last-minute deals, they're not always guaranteed. Be flexible with your itinerary for the best chance of scoring a bargain.
Is it cheaper to book a STL to CGN flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to CGN flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one convenient place will take the stress out of travel planning. Just pick your flights and choose from our wide range of hotels, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Cologne - Bonn Airport (CGN)?
Usually, it's possible to reschedule or cancel your STL to CGN flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.