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Heidelberg

$485+ 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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — FRA
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Heidelberg are usually found in November or January, booked 32 days in advance, depart on a Thursday or Monday and return on a Tuesday

Cheap 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 April 15, 2025.

Round-trip from

$864
(Justfly.com)

One-way from

$485
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,251
From Lambert-St Louis to Heidelberg
Search Deals
One-way flight from Lambert-St Louis to Heidelberg
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Highest demand for flights based on searches. 17% potential increase in price ($247 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 15, 2025.

This StudentUniverse deal was found by Cheapflights users on 4/15. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/261:27 pmSTL - FRA
2 stops15h 33mMultiple Airlines
Fri 12/510:45 amFRA - STL
Nonstop10h 10mMultiple Airlines
Deal found 4/15$806
This Booking.com deal was found by Cheapflights users on 4/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/268:00 amSTL - FRA
2 stops16h 25mAir Canada
Fri 12/59:45 amFRA - STL
2 stops35h 33mAir Canada
Deal found 4/15$820
This FlightHub deal was found by Cheapflights users on 4/15. 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.
Wed 11/263:45 pmSTL - FRA
Nonstop8h 40mLufthansa
Fri 12/510:45 amFRA - STL
Nonstop10h 10mLufthansa
Deal found 4/15$823
This United deal was found by Cheapflights users on 4/14. 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.
Tue 10/215:11 pmSTL - FRA
1 stop35h 04mUnited Airlines
Tue 11/45:10 pmFRA - STL
1 stop29h 16mUnited Airlines
Deal found 4/14$828
This Air France deal was found by Cheapflights users on 4/15. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1611:51 amSTL - FRA
1 stop13h 49mAir France
Mon 11/249:50 amFRA - STL
1 stop17h 59mAir France
Deal found 4/15$885
This Delta deal was found by Cheapflights users on 4/15. 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 11/186:00 amSTL - FRA
2 stops18h 50mDelta
Mon 11/249:50 amFRA - STL
1 stop20h 49mDelta
Deal found 4/15$897
This Austrian Airlines deal was found by Cheapflights users on 4/15. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/141:27 pmSTL - FRA
2 stops16h 23mAustrian Airlines
Fri 11/218:20 amFRA - STL
2 stops15h 54mAustrian Airlines
Deal found 4/15$932
This KLM deal was found by Cheapflights users on 4/14. 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.
Mon 4/285:34 pmSTL - FRA
2 stops13h 01mKLM
Wed 5/142:15 pmFRA - STL
2 stops16h 23mKLM
Deal found 4/14$976
This Finnair deal was found by Cheapflights users on 4/14. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/2610:36 amSTL - FRA
1 stop15h 09mFinnair
Wed 6/410:55 amFRA - STL
1 stop14h 32mFinnair
Deal found 4/14$1,048
This Scandinavian Airlines deal was found by Cheapflights users on 4/15. 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 11/173:30 pmSTL - FRA
2 stops16h 00mScandinavian Airlines
Sun 11/236:55 amFRA - STL
3 stops23h 44mScandinavian Airlines
Deal found 4/15$1,088
This American Airlines deal was found by Cheapflights users on 4/14. 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.
Sun 5/251:45 pmSTL - FRA
2 stops17h 20mAmerican Airlines
Wed 6/186:35 amFRA - STL
2 stops16h 19mAmerican Airlines
Deal found 4/14$1,099

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 April 15, 2025.
Use the filters below to find and compare flights from St. Louis to Heidelberg that are best for you.

Fly from

St. Louis

Fly to

Heidelberg

Route

Depart

Return

Price

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Mon 8/18

1:30 pm-7:10 am

1 stop10h 40m

Frankfurt am Main

Mon 8/25

6:10 pm-7:40 pm

2 stops32h 30m

$847

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Mon 8/18

10:00 am-11:00 am

2 stops18h 00m

Frankfurt am Main

Mon 8/25

7:30 pm-7:39 pm

2 stops31h 09m

$855

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Wed 4/30

3:30 pm-7:25 am

Nonstop8h 55m

Frankfurt am Main

Wed 5/14

9:55 am-12:19 pm

2 stops33h 24m

$910

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Wed 4/30

3:30 pm-7:25 am

Nonstop8h 55m

Frankfurt am Main

Wed 5/14

10:40 am-1:30 pm

Nonstop9h 50m

$918

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Mon 4/28

12:51 pm-9:50 am

2 stops13h 59m

Frankfurt am Main

Wed 5/7

11:50 am-8:49 pm

2 stops15h 59m

$942

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Fri 5/2

1:56 pm-9:50 am

1 stop12h 54m

Frankfurt am Main

Fri 5/16

11:00 am-8:39 pm

2 stops16h 39m

$960

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Mon 4/28

5:34 pm-1:35 pm

2 stops13h 01m

Frankfurt am Main

Wed 5/14

2:15 pm-11:38 pm

2 stops16h 23m

$976

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Mon 5/26

10:36 am-8:45 am

1 stop15h 09m

Frankfurt am Main

Wed 6/4

10:55 am-6:27 pm

1 stop14h 32m

$1,048

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Sun 5/25

1:45 pm-2:05 pm

2 stops17h 20m

Frankfurt am Main

Wed 6/18

6:35 am-3:54 pm

2 stops16h 19m

$1,099

St. LouisFrankfurt am Main

STL - FRA

STLFRA

Lambert-St Louis

Sat 4/26

4:15 pm-2:40 pm

2 stops15h 25m

Frankfurt am Main

Sun 5/4

3:25 pm-8:39 pm

2 stops36h 14m

$1,219

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/13

Showing 1-10 of 20 results
1
2

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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Heidelberg

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 April 11, 2025.

The best time to book flights from St. Louis to Heidelberg is 32 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 $1,079). 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 April 15, 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 April 15, 2025.
To help decide which airline to fly from St. Louis to Heidelberg, see what other customers have to say about Delta, KLM and Finnair. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,918 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

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
7,918 reviews
Delta
8.0
Very good
7,918 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

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
1,323 reviews
Delta
8.0
Very good
7,918 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

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
1,269 reviews
Delta
8.0
Very good
7,918 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

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.
Air France
7.5
Good
1,435 reviews
Delta
8.0
Very good
7,918 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

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.
United Airlines
7.4
Good
8,658 reviews
Delta
8.0
Very good
7,918 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

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 British Airways, with whom users have recently found tickets for as low as $538. However, be on the lookout for offers from American Airlines and Lufthansa, 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 $505. On average you can expect to pay $1,884. The most popular route, (Lambert-St Louis - Frankfurt am Main), can usually be booked for $848.

  • 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 $1,079). 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

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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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$576Average$983FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$629Average$969FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$788Average$1,179FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$815Average$1,405FlexibilityNo cancel feeOn-time76%
KLMCheapest$877Average$1,064FlexibilityNo cancel feeOn-time75%
DeltaCheapest$912Average$1,227FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$970Average$1,304FlexibilityNo cancel feeOn-time67%

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