HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heidelberg

$324+ 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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FRA
Feb 9 — Feb 161
Sun 2/9
Sun 2/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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.

The best prices from Lambert-St Louis to Heidelberg are usually found in November or October, booked 11 days in advance, depart on a Thursday or Friday and return on a Tuesday

Cheap flight deals from St. Louis to Heidelberg

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Heidelberg (HE1). 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 4, 2025.

Round-trip from

$884
(Cheapflightsfares)

One-way from

$324
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,070
From Lambert-St Louis to Heidelberg
Search Deals
One-way flight from Lambert-St Louis to Heidelberg
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($343 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from St. Louis to Heidelberg

Cheapest flights from St. Louis to Heidelberg
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 February 4, 2025.

This FlightHub deal was found by Cheapflights users on 2/2. 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.
Thu 12/42:05 pmSTL - FRA
2 stops17h 35mScandinavian Airlines
Sun 12/73:20 pmFRA - STL
2 stops39h 19mScandinavian Airlines
Deal found 2/2$791
This Cheapflightsfares deal was found by Cheapflights users on 2/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/264:45 pmSTL - FRA
Nonstop8h 40mMultiple Airlines
Tue 4/19:45 pmFRA - STL
2 stops32h 30mMultiple Airlines
Deal found 2/4$884
This United deal was found by Cheapflights users on 2/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/264:45 pmSTL - FRA
Nonstop8h 40mUnited Airlines
Tue 4/14:30 pmFRA - STL
2 stops30h 17mUnited Airlines
Deal found 2/3$894
This Gurufare deal was found by Cheapflights users on 2/3. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/512:00 pmSTL - FRA
2 stops15h 05mAer Lingus
Wed 3/1210:50 amFRA - STL
2 stops17h 28mAer Lingus
Deal found 2/3$952
This KLM deal was found by Cheapflights users on 2/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/811:51 amSTL - FRA
1 stop14h 04mKLM
Wed 10/2211:00 amFRA - STL
1 stop16h 30mKLM
Deal found 2/3$996
This Virgin Atlantic deal was found by Cheapflights users on 2/3. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/811:51 amSTL - FRA
1 stop14h 04mVirgin Atlantic
Wed 10/2211:00 amFRA - STL
2 stops19h 39mVirgin Atlantic
Deal found 2/3$1,000
This Gotogate deal was found by Cheapflights users on 2/4. 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.
Sun 3/306:30 amSTL - FRA
2 stops21h 40mAir Canada
Sun 4/135:05 pmFRA - STL
2 stops26h 15mAir Canada
Deal found 2/4$1,030
This Lufthansa deal was found by Cheapflights users on 2/4. 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 3/303:30 pmSTL - FRA
Nonstop8h 55mLufthansa
Sun 4/1310:40 amFRA - STL
Nonstop9h 50mLufthansa
Deal found 2/4$1,036
This Delta deal was found by Cheapflights users on 2/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1310:10 amSTL - FRA
1 stop15h 45mDelta
Wed 5/2110:40 amFRA - STL
1 stop19h 58mDelta
Deal found 2/3$1,101
This oojo deal was found by Cheapflights users on 2/4. 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.
Fri 9/195:18 pmSTL - FRA
2 stops20h 42mTurkish Airlines
Thu 9/256:45 pmFRA - STL
2 stops26h 33mTurkish Airlines
Deal found 2/4$1,226
This Alaska Airlines deal was found by Cheapflights users on 2/3. 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.
Tue 4/226:30 amSTL - FRA
1 stop22h 40mAlaska Airlines
Sun 4/271:45 pmFRA - STL
1 stop17h 14mAlaska Airlines
Deal found 2/3$1,270

Find flights from St. Louis to Heidelberg within your budget

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 February 4, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Wed 3/26

4:45 pm-7:25 am

Nonstop8h 40m

Frankfurt am Main

Tue 4/1

9:45 pm-11:15 pm

2 stops32h 30m

$884

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Wed 3/26

4:45 pm-7:25 am

Nonstop8h 40m

Frankfurt am Main

Tue 4/1

4:30 pm-3:47 pm

2 stops30h 17m

$894

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Wed 3/5

10:26 am-3:25 pm

2 stops21h 59m

Frankfurt am Main

Wed 3/12

6:55 am-11:31 pm

3 stops22h 36m

$917

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Wed 3/5

12:00 pm-10:05 am

2 stops15h 05m

Frankfurt am Main

Wed 3/12

10:50 am-10:18 pm

2 stops17h 28m

$952

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Sun 3/30

6:30 am-11:10 am

2 stops21h 40m

Frankfurt am Main

Sun 4/13

5:05 pm-12:20 pm

2 stops26h 15m

$1,030

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Sun 3/30

3:30 pm-7:25 am

Nonstop8h 55m

Frankfurt am Main

Sun 4/13

10:40 am-1:30 pm

Nonstop9h 50m

$1,036

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Tue 5/13

10:10 am-8:55 am

1 stop15h 45m

Frankfurt am Main

Wed 5/21

10:40 am-11:38 pm

1 stop19h 58m

$1,101

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Wed 5/14

1:00 pm-9:50 am

2 stops13h 50m

Frankfurt am Main

Sun 5/25

10:40 am-11:38 pm

1 stop19h 58m

$1,165

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Wed 5/14

2:18 pm-11:00 am

2 stops13h 42m

Frankfurt am Main

Wed 5/21

7:00 am-3:58 pm

2 stops15h 58m

$1,193

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Wed 4/23

3:40 pm-9:00 pm

2 stops22h 20m

Frankfurt am Main

Mon 4/28

6:45 pm-2:42 pm

2 stops26h 57m

$1,237

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 24 results
1
2
3

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.
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.

Travel insights for flights from St. Louis to Heidelberg

Get recent, data-driven insights about flights from St. Louis to Heidelberg including ideal travel times, pricing trends, and more.

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 January 31, 2025.

The best time to book flights from St. Louis to Heidelberg is 11 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, January is the cheapest month in which you can book a flight from St. Louis to Heidelberg (average of $729). Flying from St. Louis to Heidelberg in June is currently the most expensive (average of $1,104). 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 February 4, 2025.

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.

Rainfall in Heidelberg by month

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

In terms of precipitation, rainfall in Heidelberg ranges from 1.6 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Heidelberg when rainfall is around 1.6 in.

Temperature in Heidelberg by month

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

If weather is an important factor for your trip to Heidelberg, 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 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

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 February 4, 2025.
Delta
8.0
Very good
8,408 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,408 reviews
Delta
8.0
Very good
8,408 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Alaska Airlines
8.0
Very good
9,678 reviews
Delta
8.0
Very good
8,408 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
8,408 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,284 reviews
Delta
8.0
Very good
8,408 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic
7.5
Good
658 reviews
Delta
8.0
Very good
8,408 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Heidelberg. 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 Heidelberg?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Heidelberg. On average, Lambert-St Louis has 0 outbound flights to Heidelberg per day from 7 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • What are the cheapest airlines to fly from St. Louis to Heidelberg one-way?

    The cheapest airline one-way is Lufthansa, with whom users have recently found tickets for as low as $612. However, be on the lookout for offers from Alaska Airlines and Delta, as they are both options that can get you from St. Louis to Heidelberg for a low price.

  • What are the cheapest flights from St. Louis to Heidelberg?

    The cheapest flight price from St. Louis to Heidelberg is $482. On average you can expect to pay $1,696. The most popular route, (Lambert-St Louis - Frankfurt am Main), can usually be booked for $863.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Heidelberg (average of $729). Flying from St. Louis to Heidelberg in June is currently the most expensive (average of $1,104). 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.

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 February 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$575Average$970FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$586Average$825FlexibilityNo cancel feeOn-time70%
DeltaCheapest$665Average$1,194FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$736Average$996FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$779Average$1,174FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$800Average$1,387FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$949Average$1,301FlexibilityNo cancel feeOn-time67%
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.