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$673+ Cheap flights from Oshkosh, WI 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — FRA
Jan 28 — Feb 41
Wed 1/28
Wed 2/4
1 adult, Economy
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Cheap flight deals from Oshkosh to Heidelberg

Cheapest flights from Oshkosh to Heidelberg
Explore the most affordable flight options available from Oshkosh to Heidelberg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 29, 2025.

This oojo deal was found by Cheapflights users on 12/28. 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.
Mon 12/299:51 amATW - FRA
2 stops25h 59mIberia
Mon 1/512:10 pmFRA - ATW
2 stops36h 51mIberia
Deal found 12/28$9,672
This Virgin Atlantic deal was found by Cheapflights users on 12/28. 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.
Mon 12/295:25 amATW - FRA
1 stop20h 15mVirgin Atlantic
Mon 1/59:50 amFRA - ATW
1 stop18h 57mVirgin Atlantic
Deal found 12/28$9,899

Find flight deals from Oshkosh to Heidelberg

Keep the following information in mind while searching for Oshkosh to Heidelberg flight deals. Data was last updated December 29, 2025.

Round-trip from

$673
(Delta)

Popular in

June

Cheapest in

January

Average price

$1,118
From Oshkosh 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 Oshkosh 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 29, 2025.
Use the filters below to find and compare flights from Oshkosh to Heidelberg that are best for you.

Fly from

Oshkosh

Fly to

Heidelberg

Route

Depart

Return

Price

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Tue 3/31

7:00 am-9:50 am

1 stop19h 50m

Frankfurt am Main

Thu 4/2

10:15 am-8:36 pm

2 stops17h 21m

$673

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Mon 3/30

11:14 am-9:50 am

1 stop15h 36m

Frankfurt am Main

Thu 4/2

11:00 am-8:36 pm

1 stop16h 36m

$675

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Mon 3/30

6:13 pm-5:45 pm

2 stops16h 32m

Frankfurt am Main

Wed 4/1

11:00 am-5:30 pm

1 stop13h 30m

$679

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Sun 3/29

7:00 am-2:20 pm

2 stops24h 20m

Frankfurt am Main

Wed 4/1

11:00 am-8:36 pm

1 stop16h 36m

$679

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Mon 3/30

6:30 am-9:50 am

2 stops20h 20m

Frankfurt am Main

Wed 4/1

10:40 am-8:36 pm

2 stops16h 56m

$680

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Sat 3/28

6:13 pm-8:50 am

1 stop32h 37m

Frankfurt am Main

Wed 4/1

11:00 am-8:36 pm

1 stop16h 36m

$681

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Sun 3/29

7:00 am-9:50 am

1 stop19h 50m

Frankfurt am Main

Fri 4/3

7:00 am-8:36 pm

2 stops20h 36m

$703

AppletonFrankfurt am Main

ATW - FRA

ATWFRA

Appleton Intl

Tue 3/31

7:00 am-9:50 am

1 stop19h 50m

Frankfurt am Main

Fri 4/3

11:00 am-8:36 pm

1 stop16h 36m

$705

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/28

Best time to book a flight from Oshkosh to Heidelberg

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

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

Currently, January is the cheapest month in which you can book a flight from Oshkosh to Heidelberg (average of $614). Flying from Oshkosh 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 29, 2025.
Get a feel of what it's like to fly with Delta and United Airlines from Oshkosh 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

Entertainment

7.9

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Food

7.3

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

Entertainment

7.9

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Food

7.3

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
9,118 reviews
Delta
7.9
Good
8,014 reviews

Entertainment

7.9

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Food

7.3

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 Oshkosh to Heidelberg. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Oshkosh to Heidelberg?

    There are many flights that can get you from Oshkosh to Heidelberg in 19h 50m. Fly via Delta to get the fastest option. The distance from Oshkosh to Heidelberg is about 4241 mi.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Oshkosh to Heidelberg (average of $614). Flying from Oshkosh 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

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Top 3 airlines flying from Oshkosh to Heidelberg

Discover the top 3 airlines that operate flights from Oshkosh 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 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$631Average$925FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$635Average$1,100FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$769Average$1,260FlexibilityNo cancel feeOn-time71%

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