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Heidelberg

$722+ Cheap flights from Appleton (ATW) to Heidelberg, Germany

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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
ATW — FRA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Appleton to Heidelberg

Keep the following information in mind while searching for Appleton to Heidelberg flight deals. Data was last updated September 11, 2025.

Round-trip from

$722
(Delta)

Popular in

June

Cheapest in

November

Average price

$955
From Appleton Intl to Heidelberg
Search Deals
Highest demand for flights based on searches. 29% potential increase in price ($404 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($67 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Appleton to Heidelberg

Cheapest flights from Appleton to Heidelberg
Explore the most affordable flight options available from Appleton to Heidelberg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Delta deal was found by Cheapflights users on 9/11. 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 9/235:35 amATW - FRA
1 stop20h 20mDelta
Tue 12/99:50 amFRA - ATW
1 stop19h 21mDelta
Deal found 9/11$722
This Delta deal was found by Cheapflights users on 9/9. 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 11/257:00 amATW - FRA
2 stops17h 50mDelta
Mon 12/89:50 amFRA - ATW
2 stops18h 01mDelta
Deal found 9/9$732
This Delta deal was found by Cheapflights users on 9/11. 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 9/237:00 amATW - FRA
2 stops18h 40mDelta
Fri 12/1210:40 amFRA - ATW
2 stops32h 00mDelta
Deal found 9/11$738
This Delta deal was found by Cheapflights users on 9/11. 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 9/237:00 amATW - FRA
2 stops18h 40mDelta
Thu 12/119:40 amFRA - ATW
2 stops18h 11mDelta
Deal found 9/11$747
This Delta deal was found by Cheapflights users on 9/10. 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.
Wed 11/265:23 amATW - FRA
2 stops22h 52mDelta
Mon 12/89:50 amFRA - ATW
2 stops18h 01mDelta
Deal found 9/10$751
This Delta deal was found by Cheapflights users on 9/11. 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 9/235:35 amATW - FRA
1 stop20h 20mDelta
Mon 12/82:15 pmFRA - ATW
2 stops32h 23mDelta
Deal found 9/11$757
This KLM deal was found by Cheapflights users on 9/11. 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 11/2611:08 amATW - FRA
1 stop13h 42mKLM
Mon 12/810:40 amFRA - ATW
1 stop17h 11mKLM
Deal found 9/11$767
This Delta deal was found by Cheapflights users on 9/9. 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.
Mon 11/247:00 amATW - FRA
2 stops23h 40mDelta
Mon 12/89:50 amFRA - ATW
1 stop19h 21mDelta
Deal found 9/9$772
This Air France deal was found by Cheapflights users on 9/9. 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.
Tue 11/115:23 amATW - FRA
1 stop20h 17mMultiple Airlines
Mon 12/110:40 amFRA - ATW
1 stop13h 42mMultiple Airlines
Deal found 9/9$775

Cheapflights Fare Finder

 
Customize your flight search to find flights from Appleton 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 September 11, 2025.
Use the filters below to find and compare flights from Appleton to Heidelberg that are best for you.

Fly from

Appleton

Fly to

Heidelberg

Route

Depart

Return

Price

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Wed 9/24

5:35 am-8:55 am

1 stop20h 20m

Frankfurt am Main

Fri 12/12

10:40 am-8:51 pm

1 stop17h 11m

$722

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Tue 11/11

5:23 am-8:40 am

1 stop20h 17m

Frankfurt am Main

Mon 12/1

8:00 pm-8:51 pm

2 stops31h 51m

$722

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Wed 9/24

5:35 am-8:55 am

1 stop20h 20m

Frankfurt am Main

Tue 12/9

9:50 am-10:11 pm

1 stop19h 21m

$722

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Mon 9/29

5:35 am-8:55 am

1 stop20h 20m

Frankfurt am Main

Tue 12/9

9:50 am-10:11 pm

1 stop19h 21m

$722

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Wed 9/24

5:35 am-8:55 am

1 stop20h 20m

Frankfurt am Main

Wed 12/10

10:40 am-5:22 pm

1 stop13h 42m

$722

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Mon 9/29

7:00 am-9:50 am

1 stop19h 50m

Frankfurt am Main

Wed 12/10

10:40 am-5:22 pm

1 stop13h 42m

$722

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Wed 11/26

11:08 am-7:50 am

1 stop13h 42m

Frankfurt am Main

Mon 12/8

10:40 am-8:51 pm

1 stop17h 11m

$727

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Wed 11/26

11:08 am-7:50 am

1 stop13h 42m

Frankfurt am Main

Mon 12/8

9:50 am-10:11 pm

1 stop19h 21m

$727

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Tue 9/23

5:35 am-8:40 am

2 stops20h 05m

Frankfurt am Main

Wed 12/10

10:40 am-5:22 pm

1 stop13h 42m

$727

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from Appleton to Heidelberg

Have a flexible travel schedule? Discover the best time to fly to Heidelberg from Appleton 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 Appleton to Heidelberg

What is the cheapest month to book a flight from Appleton to Heidelberg?

Currently, January is the cheapest month in which you can book a flight from Appleton to Heidelberg (average of $729). Flying from Appleton to Heidelberg in June is currently the most expensive (average of $1,091). 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.

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 September 11, 2025.
Get a feel of what it's like to fly with Delta and United Airlines from Appleton 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.
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Appleton 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 Appleton to Heidelberg?

    If you book a flight to Heidelberg from Appleton, you will be flying from Appleton Intl, which is the city’s only airport. Appleton Intl (ATW) is located 5.1 mi from the center of Appleton. There are 0 flights from Appleton Intl to Heidelberg per day from 2 different airlines.

  • How long is the flight from Appleton to Heidelberg?

    Delta can get you from Appleton to Heidelberg in just under 20h 20m. Your travel time can differ by up to . The distance from Appleton to Heidelberg is about 4241 mi.

  • Can I find deals for flights from Appleton to Heidelberg that include hotel bookings?

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

  • How can I find direct flights from Appleton to Heidelberg?

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

  • Can I find deals for business class flights from Appleton to Heidelberg?

    Yes. Cheapflights offers flight deals from Appleton 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 Appleton to Heidelberg?

    Currently, January is the cheapest month in which you can book a flight from Appleton to Heidelberg (average of $729). Flying from Appleton to Heidelberg in June is currently the most expensive (average of $1,091). 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 2 airlines flying from Appleton to Heidelberg

Discover the top 2 airlines that operate flights from Appleton 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$672Average$936FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$681Average$1,163FlexibilityNo cancel feeOn-time69%

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