$439+ Cheap flights from St. Louis (STL) to Heidelberg, Germany
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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FRA
Apr 23 — Apr 301
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Heidelberg 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.Cheapflights Tip: The best prices from Lambert-St Louis to Heidelberg are usually found in March or January, booked 3 days in advance, depart on a Tuesday or Monday and return on a Tuesday
Cheap flight deals from St. Louis to Heidelberg
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to HeidelbergExplore the most affordable flight options available from St. Louis to Heidelberg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 24, 2026.
Explore the most affordable flight options available from St. Louis to Heidelberg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 24, 2026.
This FlightHub deal was found by Cheapflights users on 3/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:42 pm
STL
- FRA
2 stops36h 08m
Scandinavian Airlines
Sun 11/13:15 pm
FRA
- STL
2 stops39h 24m
Scandinavian Airlines
Deal found 3/23![Scandinavian Airlines logo]()
$806
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Fri 5/87:00 am
STL
- FRA
1 stop17h 20m
American Airlines
Fri 5/1510:55 am
FRA
- STL
1 stop28h 59m
American Airlines
Deal found 3/24![American Airlines logo]()
$820
This Expedia deal was found by Cheapflights users on 3/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/251:30 pm
STL
- FRA
2 stops18h 00m
Scandinavian Airlines
Sun 12/63:15 pm
FRA
- STL
2 stops39h 24m
Scandinavian Airlines
Deal found 3/23![Scandinavian Airlines logo]()
$828
This KAYAK deal was found by Cheapflights users on 3/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/63:42 pm
STL
- FRA
2 stops21h 03m
Scandinavian Airlines
Sun 11/83:15 pm
FRA
- STL
2 stops39h 24m
Scandinavian Airlines
Deal found 3/23![Scandinavian Airlines logo]()
$840
This Expedia deal was found by Cheapflights users on 3/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/281:30 pm
STL
- FRA
2 stops18h 05m
Multiple Airlines
Tue 10/138:05 am
FRA
- STL
2 stops19h 44m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$880
This Expedia deal was found by Cheapflights users on 3/24. 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 8/243:42 pm
STL
- FRA
2 stops15h 53m
Multiple Airlines
Mon 9/78:10 am
FRA
- STL
2 stops22h 27m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$881
This Condor deal was found by Cheapflights users on 3/20. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:25 am
STL
- FRA
1 stop12h 20m
Multiple Airlines
Tue 9/1512:30 pm
FRA
- STL
1 stop14h 10m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$900
This KAYAK deal was found by Cheapflights users on 3/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:30 pm
STL
- FRA
2 stops37h 20m
Scandinavian Airlines
Sat 12/53:15 pm
FRA
- STL
2 stops39h 24m
Scandinavian Airlines
Deal found 3/23![Scandinavian Airlines logo]()
$945
This Condor deal was found by Cheapflights users on 3/19. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:25 am
STL
- FRA
1 stop12h 20m
Multiple Airlines
Mon 9/712:30 pm
FRA
- STL
1 stop14h 15m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$961
This Condor deal was found by Cheapflights users on 3/23. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:40 am
STL
- FRA
1 stop11h 05m
Multiple Airlines
Wed 9/912:30 pm
FRA
- STL
1 stop14h 10m
Multiple Airlines
Deal found 3/23![Multiple Airlines logo]()
$962
Best flights from St. Louis to HeidelbergDiscover carefully curated flight deals from St. Louis to Heidelberg that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 24, 2026.
Discover carefully curated flight deals from St. Louis to Heidelberg that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 24, 2026.
This Condor deal was found by Cheapflights users on 3/24. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1910:15 am
STL
- FRA
1 stop12h 30m
Multiple Airlines
Tue 6/1612:30 pm
FRA
- STL
1 stop15h 00m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$992
This Scandinavian Airlines deal was found by Cheapflights users on 3/20. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:42 pm
STL
- FRA
2 stops15h 53m
Scandinavian Airlines
Mon 8/317:00 am
FRA
- STL
3 stops23h 37m
Scandinavian Airlines
Deal found 3/20![Scandinavian Airlines logo]()
$1,120
This Turkish Airlines deal was found by Cheapflights users on 3/21. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:45 am
STL
- FRA
2 stops30h 30m
Turkish Airlines
Fri 4/243:05 pm
FRA
- STL
2 stops37h 08m
Turkish Airlines
Deal found 3/21![Turkish Airlines logo]()
$1,187
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:56 pm
STL
- FRA
1 stop34h 14m
Alaska Airlines
Mon 8/312:45 pm
FRA
- STL
1 stop30h 41m
Alaska Airlines
Deal found 3/20![Alaska Airlines logo]()
$1,279
This Lufthansa deal was found by Cheapflights users on 3/22. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/193:30 pm
STL
- FRA
Nonstop8h 55m
Lufthansa
Sun 5/310:40 am
FRA
- STL
Nonstop9h 45m
Lufthansa
Deal found 3/22![Lufthansa logo]()
$1,432
This Turkish Airlines deal was found by Cheapflights users on 3/22. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:45 am
STL
- FRA
2 stops43h 20m
Multiple Airlines
Mon 5/187:00 pm
FRA
- STL
2 stops33h 13m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$1,093
This Turkish Airlines deal was found by Cheapflights users on 3/21. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:45 am
STL
- FRA
2 stops30h 30m
Multiple Airlines
Wed 5/207:00 pm
FRA
- STL
2 stops27h 46m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$1,093
This Turkish Airlines deal was found by Cheapflights users on 3/19. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:32 pm
STL
- FRA
2 stops20h 43m
Multiple Airlines
Mon 9/77:50 am
FRA
- STL
2 stops20h 32m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$1,133
This Condor deal was found by Cheapflights users on 3/24. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/2510:15 am
STL
- FRA
1 stop12h 30m
Multiple Airlines
Tue 6/1612:30 pm
FRA
- STL
1 stop15h 00m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$1,136
This Turkish Airlines deal was found by Cheapflights users on 3/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:00 am
STL
- FRA
2 stops24h 40m
Multiple Airlines
Thu 9/247:00 pm
FRA
- STL
2 stops27h 38m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$1,208
Last-minute flights from St. Louis to HeidelbergDiscover last-minute flight deals from St. Louis to Heidelberg. Data last updated March 24, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Heidelberg. Data last updated March 24, 2026 and is based on user searches.
This Turkish Airlines deal was found by Cheapflights users on 3/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:45 am
STL
- FRA
2 stops46h 55m
Turkish Airlines
Wed 4/296:50 am
FRA
- STL
2 stops21h 23m
Turkish Airlines
Deal found 3/20![Turkish Airlines logo]()
$1,038
This Turkish Airlines deal was found by Cheapflights users on 3/22. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:45 am
STL
- FRA
2 stops43h 20m
Multiple Airlines
Mon 5/187:00 pm
FRA
- STL
2 stops33h 13m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$1,093
This FlightHub deal was found by Cheapflights users on 3/24. 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.
Sat 4/187:45 am
STL
- FRA
2 stops46h 55m
Turkish Airlines
Thu 4/236:50 am
FRA
- STL
2 stops45h 23m
Turkish Airlines
Deal found 3/24![Turkish Airlines logo]()
$1,036
This Turkish Airlines deal was found by Cheapflights users on 3/23. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:45 am
STL
- FRA
2 stops19h 20m
Turkish Airlines
Tue 5/511:30 am
FRA
- STL
2 stops40h 43m
Turkish Airlines
Deal found 3/23![Turkish Airlines logo]()
$1,133
This Ticket deal was found by Cheapflights users on 3/24. 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 4/197:45 am
STL
- FRA
2 stops40h 00m
Turkish Airlines
Sun 5/36:50 am
FRA
- STL
2 stops21h 23m
Turkish Airlines
Deal found 3/24![Turkish Airlines logo]()
$1,108
This Turkish Airlines deal was found by Cheapflights users on 3/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:45 am
STL
- FRA
2 stops30h 30m
Multiple Airlines
Sun 5/37:50 am
FRA
- STL
2 stops20h 23m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$1,111
This Turkish Airlines deal was found by Cheapflights users on 3/23. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:45 am
STL
- FRA
2 stops46h 55m
Turkish Airlines
Thu 4/306:50 am
FRA
- STL
2 stops45h 23m
Turkish Airlines
Deal found 3/23![Turkish Airlines logo]()
$1,044
This Turkish Airlines deal was found by Cheapflights users on 3/21. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:45 am
STL
- FRA
2 stops19h 20m
Multiple Airlines
Fri 5/87:00 pm
FRA
- STL
2 stops33h 13m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$1,098
This Justfly.com deal was found by Cheapflights users on 3/23. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:25 pm
STL
- FRA
2 stops14h 50m
Aer Lingus
Thu 5/710:55 am
FRA
- STL
2 stops18h 24m
Aer Lingus
Deal found 3/23![Aer Lingus logo]()
$1,127
One-way flights from St. Louis to HeidelbergSearch for one-way flight options from St. Louis to Heidelberg. Find affordable one-way fares based on user searches. Data last updated March 24, 2026.
Search for one-way flight options from St. Louis to Heidelberg. Find affordable one-way fares based on user searches. Data last updated March 24, 2026.
This Mytrip deal was found by Cheapflights users on 3/24. 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 9/132:40 pm
STL
- FRA
2 stops22h 15m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$439
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/49:50 am
STL
- FRA
3 stops27h 05m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$461
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:46 am
STL
- FRA
2 stops40h 29m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$494
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/309:50 am
STL
- FRA
3 stops23h 30m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$502
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/69:50 am
STL
- FRA
3 stops44h 10m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$513
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:59 pm
STL
- FRA
3 stops40h 21m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$524
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/18:08 pm
STL
- FRA
2 stops40h 47m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$536
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/298:06 pm
STL
- FRA
3 stops57h 44m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$548
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/18:16 pm
STL
- FRA
3 stops57h 34m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$556
Find flight deals from St. Louis to Heidelberg
Keep the following information in mind while searching for St. Louis to Heidelberg flight deals. Data was last updated March 24, 2026.
Round-trip from | $832 (Condor) |
|---|---|
One-way from | $439 (Mytrip) |
Popular in | June |
Cheapest in | March |
Average price | $924 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Heidelberg 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 March 24, 2026.
Use the filters below to find and compare flights from St. Louis to Heidelberg that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisFrankfurt am Main
STL - FRA
STLFRA
Lambert-St Louis
Tue 5/19
10:15 am-5:45 am
1 stop12h 30m
Frankfurt am Main
Tue 6/16
12:30 pm-8:30 pm
1 stop15h 00m
$992
St. LouisFrankfurt am Main
STL - FRA
STLFRA
Lambert-St Louis
Thu 4/16
7:45 am-10:05 am
2 stops43h 20m
Frankfurt am Main
Mon 5/18
7:00 pm-9:13 pm
2 stops33h 13m
$1,093
St. LouisFrankfurt am Main
STL - FRA
STLFRA
Lambert-St Louis
Thu 4/16
7:45 am-9:15 pm
2 stops30h 30m
Frankfurt am Main
Wed 5/20
7:00 pm-3:46 pm
2 stops27h 46m
$1,093
St. LouisFrankfurt am Main
STL - FRA
STLFRA
Lambert-St Louis
Mon 8/17
3:42 pm-2:35 pm
2 stops15h 53m
Frankfurt am Main
Mon 8/31
7:00 am-11:37 pm
3 stops23h 37m
$1,120
St. LouisFrankfurt am Main
STL - FRA
STLFRA
Lambert-St Louis
Wed 9/2
5:32 pm-9:15 pm
2 stops20h 43m
Frankfurt am Main
Mon 9/7
7:50 am-9:22 pm
2 stops20h 32m
$1,133
St. LouisFrankfurt am Main
STL - FRA
STLFRA
Lambert-St Louis
Mon 5/25
10:15 am-5:45 am
1 stop12h 30m
Frankfurt am Main
Tue 6/16
12:30 pm-8:30 pm
1 stop15h 00m
$1,136
St. LouisFrankfurt am Main
STL - FRA
STLFRA
Lambert-St Louis
Sun 4/12
7:45 am-9:15 pm
2 stops30h 30m
Frankfurt am Main
Fri 4/24
3:05 pm-9:13 pm
2 stops37h 08m
$1,187
St. LouisFrankfurt am Main
STL - FRA
STLFRA
Lambert-St Louis
Thu 9/17
6:00 am-1:40 pm
2 stops24h 40m
Frankfurt am Main
Thu 9/24
7:00 pm-3:38 pm
2 stops27h 38m
$1,208
St. LouisFrankfurt am Main
STL - FRA
STLFRA
Lambert-St Louis
Mon 8/17
7:56 pm-1:10 pm
1 stop34h 14m
Frankfurt am Main
Mon 8/31
2:45 pm-2:26 pm
1 stop30h 41m
$1,279
Quickest round-trip
St. LouisFrankfurt am Main
STL - FRA
STLFRA
Lambert-St Louis
Sun 4/19
3:30 pm-7:25 am
Nonstop8h 55m
Frankfurt am Main
Sun 5/3
10:40 am-1:25 pm
Nonstop9h 45m
$1,432
Showing 1-10 of 21 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Heidelberg
Have a flexible travel schedule? Discover the best time to fly to Heidelberg from St. Louis with our price prediction graph.
STL-FRA
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 Heidelberg
STL-HE1
STL-FRA
How far ahead should I book a flight from St. Louis to Heidelberg?
Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Heidelberg. Price data was last updated on March 13, 2026.
The best time to book flights from St. Louis to Heidelberg is 2 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from St. Louis to Heidelberg?
Currently, August is the cheapest month in which you can book a flight from St. Louis to Heidelberg (average of $470). Flying from St. Louis to Heidelberg in April is currently the most expensive (average of $854). 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.
What is the cheapest time of day to fly from STL to HE1?
Find hourly flight availability from St. Louis to Heidelberg. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 24, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Heidelberg as you normally would.
Reviews of airlines servicing Heidelberg
Get insights into the airlines that provide service to Heidelberg. 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 Heidelberg. Reviews last updated March 24, 2026.
Get a feel of what it's like to fly with United Airlines,American Airlines, andAir Canada from St. Louis to Heidelberg by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.3
Crew
8.1
Overall
7.4
Entertainment
7.1
Food
6.6
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Crew
8.1
Overall
7.4
Entertainment
7.1
Food
6.6
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Crew
8.1
Overall
7.4
Entertainment
7.1
Food
6.6
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Crew
8.1
Overall
7.4
Entertainment
7.1
Food
6.6
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Crew
8.1
Overall
7.4
Entertainment
7.1
Food
6.6
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Crew
8.1
Overall
7.4
Entertainment
7.1
Food
6.6
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Related info for your journey
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Top 7 airlines flying from St. Louis to Heidelberg
Discover the top 7 airlines that operate flights from St. Louis to Heidelberg. 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 March 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$390 | Average$872 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$470 | Average$906 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$610 | Average$919 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$723 | Average$1,115 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$739 | Average$1,134 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$816 | Average$1,321 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$916 | Average$1,202 | FlexibilityNo cancel fee | On-time67% |