HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heidelberg

$684+ 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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
ATW — FRA
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Appleton 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.

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 July 1, 2025.

Round-trip from

$684
(United Airlines)

Popular in

June

Cheapest in

November
From Appleton Intl to Heidelberg
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($364 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($59 potential savings vs. average RT price).
Search Deals

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 July 1, 2025.

This United Airlines deal was found by Cheapflights users on 6/30. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/32:43 pmATW - FRA
1 stop12h 12mUnited Airlines
Fri 12/59:45 amFRA - ATW
2 stops33h 20mUnited Airlines
Deal found 6/30$684
This Delta deal was found by Cheapflights users on 6/30. 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 11/126:30 amATW - FRA
2 stops18h 20mDelta
Wed 12/39:50 amFRA - ATW
2 stops18h 45mDelta
Deal found 6/30$711
This KLM deal was found by Cheapflights users on 6/30. 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.
Thu 8/145:34 amATW - FRA
1 stop20h 21mKLM
Thu 8/2110:40 amFRA - ATW
1 stop19h 13mKLM
Deal found 6/30$757
This Mytrip deal was found by Cheapflights users on 6/30. 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.
Thu 8/147:00 amATW - FRA
3 stops32h 05mMultiple Airlines
Thu 8/216:25 amFRA - ATW
3 stops39h 46mMultiple Airlines
Deal found 6/30$1,297
This Cheapflightsfares deal was found by Cheapflights users on 6/30. 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.
Tue 8/261:00 pmATW - FRA
1 stop13h 55mLufthansa
Sun 8/318:50 amFRA - ATW
1 stop19h 53mLufthansa
Deal found 6/30$3,637

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 July 1, 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

Mon 11/3

2:43 pm-9:55 am

1 stop12h 12m

Frankfurt am Main

Fri 12/5

9:45 am-12:05 pm

2 stops33h 20m

$684

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Wed 11/12

6:30 am-7:50 am

2 stops18h 20m

Frankfurt am Main

Wed 12/3

9:50 am-9:35 pm

2 stops18h 45m

$711

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Thu 8/14

5:34 am-8:55 am

1 stop20h 21m

Frankfurt am Main

Thu 8/21

10:40 am-10:53 pm

1 stop19h 13m

$757

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Thu 8/14

7:00 am-10:05 pm

3 stops32h 05m

Frankfurt am Main

Thu 8/21

6:25 am-3:11 pm

3 stops39h 46m

$1,297

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Tue 8/26

1:00 pm-9:55 am

1 stop13h 55m

Frankfurt am Main

Sun 8/31

8:50 am-9:43 pm

1 stop19h 53m

$3,637

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

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 $1,088). 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 July 1, 2025.
Get a feel of what it's like to fly with Delta, KLM, 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
7,974 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
7,974 reviews
Delta
8.0
Very good
7,974 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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!
KLM
7.8
Good
1,366 reviews
Delta
8.0
Very good
7,974 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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
8,858 reviews
Delta
8.0
Very good
7,974 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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!
Lufthansa
6.8
Okay
7,203 reviews
Delta
8.0
Very good
7,974 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

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.

  • 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 $1,088). 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 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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$672Average$1,152FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$681Average$1,218FlexibilityNo cancel feeOn-time69%

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.