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$331+ Cheap flights from Chicago (CHI) 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 7/16. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — FRA
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Heidelberg are usually found in January or February, booked 57 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Chicago to Heidelberg

Keep the following information in mind while searching for Chicago to Heidelberg flight deals. Data was last updated May 1, 2025.

Round-trip from

$639
(Condor)

One-way from

$331
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,074
From Chicago (CHI) to Heidelberg
Search Deals
One-way flight from Chicago (CHI) to Heidelberg
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($210 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Chicago to Heidelberg

Cheapest flights from Chicago to Heidelberg
Explore the most affordable flight options available from Chicago to Heidelberg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This oojo deal was found by Cheapflights users on 4/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/107:15 pmORD - FRA
1 stop12h 25mScandinavian Airlines
Wed 8/208:30 pmFRA - ORD
1 stop26h 40mScandinavian Airlines
Deal found 4/30$613
This Condor deal was found by Cheapflights users on 4/30. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/146:15 amORD - FRA
1 stop16h 30mMultiple Airlines
Wed 5/2111:40 amFRA - ORD
1 stop13h 56mMultiple Airlines
Deal found 4/30$639
This FlightHub deal was found by Cheapflights users on 4/29. 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.
Mon 9/111:25 amORD - FRA
1 stop19h 15mTurkish Airlines
Tue 9/303:05 pmFRA - ORD
1 stop25h 35mTurkish Airlines
Deal found 4/29$657
This FlightHub deal was found by Cheapflights users on 4/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:30 pmORD - FRA
1 stop10h 35mIcelandair
Sun 12/141:05 pmFRA - ORD
1 stop11h 15mIcelandair
Deal found 4/30$716
This KLM deal was found by Cheapflights users on 4/30. 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.
Mon 11/101:00 pmMDW - FRA
1 stop11h 50mKLM
Wed 11/199:50 amFRA - MDW
1 stop15h 08mKLM
Deal found 4/30$734
This Virgin Atlantic deal was found by Cheapflights users on 4/30. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/109:30 amORD - FRA
2 stops15h 20mVirgin Atlantic
Wed 11/1910:40 amFRA - ORD
2 stops17h 11mVirgin Atlantic
Deal found 4/30$747
This Virgin Atlantic deal was found by Cheapflights users on 4/30. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1010:35 amMDW - FRA
2 stops14h 15mVirgin Atlantic
Wed 11/1910:40 amFRA - MDW
2 stops18h 04mVirgin Atlantic
Deal found 4/30$747
This StudentUniverse deal was found by Cheapflights users on 4/30. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/94:56 pmORD - FRA
2 stops18h 39mFinnair
Thu 9/2512:10 pmFRA - ORD
1 stop13h 05mFinnair
Deal found 4/30$768
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/137:10 amORD - FRA
1 stop17h 10mAmerican Airlines
Sat 8/239:20 amFRA - ORD
1 stop16h 48mAmerican Airlines
Deal found 4/30$773
This oojo deal was found by Cheapflights users on 4/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/268:25 pmORD - FRA
2 stops16h 55mTAP AIR PORTUGAL
Tue 12/95:45 pmFRA - ORD
1 stop28h 15mTAP AIR PORTUGAL
Deal found 4/30$782
This Gurufare deal was found by Cheapflights users on 4/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1010:30 pmORD - FRA
Nonstop8h 35mLufthansa
Wed 8/205:20 pmFRA - ORD
Nonstop9h 35mLufthansa
Deal found 4/30$786
This Orbitz deal was found by Cheapflights users on 4/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2910:08 amORD - FRA
2 stops18h 17mIberia
Tue 8/1212:10 pmFRA - ORD
1 stop33h 05mIberia
Deal found 4/30$788

Cheapflights Fare Finder

Customize your flight search to find flights from Chicago 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 May 1, 2025.
Use the filters below to find and compare flights from Chicago to Heidelberg that are best for you.

Fly from

Chicago

Fly to

Heidelberg

Route

Depart

Return

Price

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Wed 5/14

6:15 am-5:45 am

1 stop16h 30m

Frankfurt am Main

Wed 5/21

11:40 am-6:36 pm

1 stop13h 56m

$639

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Tue 7/8

7:25 pm-4:05 pm

1 stop13h 40m

Frankfurt am Main

Thu 8/14

7:05 am-6:15 pm

1 stop18h 10m

$779

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Tue 7/29

10:08 am-11:25 am

2 stops18h 17m

Frankfurt am Main

Tue 8/12

12:10 pm-2:15 pm

1 stop33h 05m

$788

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Mon 5/12

8:15 pm-2:40 pm

1 stop11h 25m

Frankfurt am Main

Wed 5/21

8:30 pm-6:25 pm

1 stop28h 55m

$790

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Sun 6/1

6:15 pm-11:10 am

2 stops33h 55m

Frankfurt am Main

Tue 6/10

9:55 am-10:05 pm

2 stops19h 10m

$817

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Mon 5/19

10:34 am-7:20 am

1 stop13h 46m

Frankfurt am Main

Tue 6/3

11:30 am-5:50 pm

1 stop13h 20m

$822

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Wed 5/14

5:40 pm-6:35 pm

2 stops17h 55m

Frankfurt am Main

Wed 6/11

11:30 am-5:50 pm

1 stop13h 20m

$832

ChicagoFrankfurt am Main

MDW - FRA

MDWFRA

Chicago Midway

Fri 6/20

9:40 am-9:40 am

1 stop17h 00m

Frankfurt am Main

Tue 7/1

7:05 am-8:45 am

2 stops32h 40m

$862

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Tue 5/20

3:45 pm-9:20 am

1 stop34h 35m

Frankfurt am Main

Wed 9/17

9:55 am-11:23 am

1 stop32h 28m

$867

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Tue 7/8

4:00 pm-7:20 am

Nonstop8h 20m

Frankfurt am Main

Thu 8/14

5:20 pm-7:55 pm

Nonstop9h 35m

$871

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 41 results
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Best time to book a flight from Chicago to Heidelberg

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

How far ahead should I book a flight from Chicago to Heidelberg?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Heidelberg. Price data was last updated on April 25, 2025.

The best time to book flights from Chicago to Heidelberg is 57 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 Chicago to Heidelberg?

Currently, January is the cheapest month in which you can book a flight from Chicago to Heidelberg (average of $729). Flying from Chicago to Heidelberg in June is currently the most expensive (average of $1,086). 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 CHI to HE1?

Find hourly flight availability from Chicago 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 May 1, 2025.

When flying from Chicago to Heidelberg, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Chicago to Heidelberg?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Heidelberg. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Chicago to Heidelberg flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago to Heidelberg

Explore weekly flight availability from Chicago to Heidelberg. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 1, 2025.

The most flights from CHI to HE1 are scheduled on a Monday (13 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (13 on average).

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 May 1, 2025.
Peruse reviews from past customers who have flown with Singapore Airlines, Delta and Alaska Airlines from Chicago to Heidelberg to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,292 reviews

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Singapore Airlines
8.1
Very good
1,292 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Delta
8.0
Very good
7,934 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Alaska Airlines
8.0
Very good
9,968 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
KLM
7.8
Good
1,334 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
LOT
7.6
Good
1,069 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Boarding

8.2

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.7

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Heidelberg. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Chicago to Heidelberg one-way?

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as $347. Users have also found prices from $362 and $454 on TAP AIR PORTUGAL and Aer Lingus, respectively.

  • What are the most reliable airlines from Chicago to Heidelberg?

    No one likes to see their flight delayed. When booking a flight from Chicago to Heidelberg consider choosing Air Canada (73%), United Airlines (73%) or Lufthansa (73%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Chicago to Heidelberg?

    Looking at all options, your cheapest flight can be booked for $482. While the most popular route (Chicago O'Hare Intl - Frankfurt am Main) can be booked for $506 on average our data indicates $4,229 when flying from Chicago to Heidelberg.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Chicago to Heidelberg (average of $729). Flying from Chicago to Heidelberg in June is currently the most expensive (average of $1,086). 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 10 airlines flying from Chicago to Heidelberg

Discover the top 10 airlines that operate flights from Chicago 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$264Average$651FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$453Average$671FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$492Average$832FlexibilityNo cancel feeOn-time71%
TAP AIR PORTUGALCheapest$495Average$864FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$565Average$773FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$590Average$794FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$600Average$700FlexibilityNo cancel feeOn-time77%
KLMCheapest$642Average$920FlexibilityNo cancel feeOn-time75%
LOTCheapest$698Average$1,025FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$746Average$1,138FlexibilityNo cancel feeOn-time69%

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