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Heidelberg

$312+ Cheap flights from Appleton (ATW) 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 1/19. Fares are subject to change and may not be available on all flights or dates of travel.
ATW — FRA
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap flight deals from Appleton to Heidelberg

Best flights from Appleton to Heidelberg
Discover carefully curated flight deals from Appleton to Heidelberg that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 23, 2025.

This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/3111:03 amATW - FRA
2 stops14h 37mDelta
Mon 3/210:15 amFRA - ATW
2 stops18h 35mDelta
Deal found 12/22$599
This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/295:20 amATW - FRA
1 stop20h 20mDelta
Thu 3/511:50 amFRA - ATW
2 stops29h 52mDelta
Deal found 12/22$599
This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/216:45 amATW - FRA
1 stop18h 05mDelta
Wed 3/46:55 amFRA - ATW
2 stops15h 45mDelta
Deal found 12/22$599
This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/15:20 amATW - FRA
1 stop20h 20mDelta
Tue 3/36:55 amFRA - ATW
2 stops15h 45mDelta
Deal found 12/22$599
This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/2311:03 amATW - FRA
2 stops14h 37mDelta
Thu 3/511:50 amFRA - ATW
2 stops15h 57mDelta
Deal found 12/22$599
This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2111:03 amATW - FRA
1 stop13h 47mDelta
Tue 3/36:55 amFRA - ATW
2 stops15h 45mDelta
Deal found 12/22$599
This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2111:03 amATW - FRA
2 stops14h 37mDelta
Thu 3/511:50 amFRA - ATW
2 stops15h 57mDelta
Deal found 12/22$599
This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/3011:03 amATW - FRA
2 stops14h 37mDelta
Tue 3/311:50 amFRA - ATW
2 stops15h 57mDelta
Deal found 12/22$599
This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/316:45 amATW - FRA
1 stop18h 05mDelta
Fri 3/66:55 amFRA - ATW
2 stops15h 45mDelta
Deal found 12/22$599
This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/286:10 amATW - FRA
2 stops18h 40mDelta
Tue 3/310:15 amFRA - ATW
2 stops18h 35mDelta
Deal found 12/22$599
This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/206:23 pmATW - FRA
1 stop30h 27mDelta
Mon 3/26:55 amFRA - ATW
2 stops21h 32mDelta
Deal found 12/22$599
This Delta deal was found by Cheapflights users on 12/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/226:23 pmATW - FRA
1 stop30h 27mDelta
Sat 2/2811:50 amFRA - ATW
2 stops15h 57mDelta
Deal found 12/22$599

Find flight deals from Appleton to Heidelberg

Keep the following information in mind while searching for Appleton to Heidelberg flight deals. Data was last updated December 23, 2025.

Round-trip from

$542
(AirNGo)

One-way from

$312
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,118
From Appleton Intl to Heidelberg
Search Deals
One-way flight from Appleton Intl to Heidelberg
Search Deals
Highest demand for flights based on searches. 29% potential increase in price ($397 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($68 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 23, 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

Sat 1/31

11:03 am-8:40 am

2 stops14h 37m

Frankfurt am Main

Mon 3/2

10:15 am-9:50 pm

2 stops18h 35m

$599

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Thu 1/29

5:20 am-8:40 am

1 stop20h 20m

Frankfurt am Main

Thu 3/5

11:50 am-10:42 am

2 stops29h 52m

$599

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Wed 1/21

6:45 am-7:50 am

1 stop18h 05m

Frankfurt am Main

Wed 3/4

6:55 am-3:40 pm

2 stops15h 45m

$599

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Sun 2/1

5:20 am-8:40 am

1 stop20h 20m

Frankfurt am Main

Tue 3/3

6:55 am-3:40 pm

2 stops15h 45m

$599

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Fri 1/23

11:03 am-8:40 am

2 stops14h 37m

Frankfurt am Main

Thu 3/5

11:50 am-8:47 pm

2 stops15h 57m

$599

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Wed 1/21

11:03 am-7:50 am

1 stop13h 47m

Frankfurt am Main

Tue 3/3

6:55 am-3:40 pm

2 stops15h 45m

$599

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Wed 1/21

11:03 am-8:40 am

2 stops14h 37m

Frankfurt am Main

Thu 3/5

11:50 am-8:47 pm

2 stops15h 57m

$599

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Fri 1/30

11:03 am-8:40 am

2 stops14h 37m

Frankfurt am Main

Tue 3/3

11:50 am-8:47 pm

2 stops15h 57m

$599

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Sat 1/31

6:45 am-7:50 am

1 stop18h 05m

Frankfurt am Main

Fri 3/6

6:55 am-3:40 pm

2 stops15h 45m

$599

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Wed 1/28

6:10 am-7:50 am

2 stops18h 40m

Frankfurt am Main

Tue 3/3

10:15 am-9:50 pm

2 stops18h 35m

$599

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 24 results
1
2
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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 $614). Flying from Appleton to Heidelberg in June is currently the most expensive (average of $1,224). 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 December 23, 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
7.9
Good
8,014 reviews

Overall

7.9

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,014 reviews
Delta
7.9
Good
8,014 reviews

Overall

7.9

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,106 reviews
Delta
7.9
Good
8,014 reviews

Overall

7.9

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 14h 37m. 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 $614). Flying from Appleton to Heidelberg in June is currently the most expensive (average of $1,224). 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$660Average$777FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$702Average$1,204FlexibilityNo cancel feeOn-time69%

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