HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heidelberg

$238+ Cheap flights from O'Hare Intl (ORD) 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FRA
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from O'Hare Intl 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.
Cheapflights Tip: The best prices from Chicago O'Hare Intl to Heidelberg are usually found in January or February, booked 73 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from O'Hare Intl to Heidelberg

Cheapest flights from O'Hare Intl to Heidelberg
Explore the most affordable flight options available from O'Hare Intl to Heidelberg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This oojo deal was found by Cheapflights users on 1/19. 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 4/17:25 pm
ORD
-
FRA
1 stop13h 55m
Icelandair
Fri 4/102:00 pm
FRA
-
ORD
1 stop11h 15m
Icelandair
Deal found 1/19$481
This oojo deal was found by Cheapflights users on 1/20. 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 4/1910:25 pm
ORD
-
FRA
1 stop31h 35m
Icelandair
Wed 4/292:00 pm
FRA
-
ORD
1 stop11h 15m
Icelandair
Deal found 1/20$482
This oojo deal was found by Cheapflights users on 1/18. 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 4/87:25 pm
ORD
-
FRA
1 stop10h 35m
Icelandair
Tue 4/215:20 pm
FRA
-
ORD
1 stop31h 55m
Icelandair
Deal found 1/18$483
This FlightHub deal was found by Cheapflights users on 1/20. 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.
Tue 2/106:30 pm
ORD
-
FRA
1 stop10h 35m
Icelandair
Mon 2/231:05 pm
FRA
-
ORD
1 stop11h 15m
Icelandair
Deal found 1/20$485
This FlightHub deal was found by Cheapflights users on 1/19. 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 4/137:25 pm
ORD
-
FRA
1 stop13h 55m
Icelandair
Sun 4/265:20 pm
FRA
-
ORD
1 stop11h 05m
Icelandair
Deal found 1/19$486
This AirNGo deal was found by Cheapflights users on 1/20. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/238:15 pm
ORD
-
FRA
1 stop13h 40m
TAP AIR PORTUGAL
Sun 2/16:00 am
FRA
-
ORD
1 stop15h 45m
TAP AIR PORTUGAL
Deal found 1/20$487
This oojo deal was found by Cheapflights users on 1/19. 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.
Thu 4/237:25 pm
ORD
-
FRA
1 stop10h 35m
Icelandair
Sat 5/22:00 pm
FRA
-
ORD
1 stop11h 15m
Icelandair
Deal found 1/19$489
This oojo deal was found by Cheapflights users on 1/19. 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.
Fri 5/16:00 pm
ORD
-
FRA
1 stop21h 20m
TAP AIR PORTUGAL
Thu 5/77:45 pm
FRA
-
ORD
1 stop27h 15m
TAP AIR PORTUGAL
Deal found 1/19$494
This oojo deal was found by Cheapflights users on 1/20. 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.
Sat 5/27:25 pm
ORD
-
FRA
1 stop13h 55m
Icelandair
Sun 5/105:20 pm
FRA
-
ORD
1 stop11h 05m
Icelandair
Deal found 1/20$496
This oojo deal was found by Cheapflights users on 1/18. 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.
Tue 5/57:25 pm
ORD
-
FRA
1 stop10h 35m
Icelandair
Tue 5/125:20 pm
FRA
-
ORD
1 stop31h 55m
Icelandair
Deal found 1/18$498
This oojo deal was found by Cheapflights users on 1/20. 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 4/296:00 pm
ORD
-
FRA
1 stop17h 40m
TAP AIR PORTUGAL
Fri 5/81:30 pm
FRA
-
ORD
1 stop33h 45m
TAP AIR PORTUGAL
Deal found 1/20$501

Find flight deals from O'Hare Intl to Heidelberg

Keep the following information in mind while searching for O'Hare Intl to Heidelberg flight deals. Data was last updated January 21, 2026.

Round-trip from

$481
(oojo)

One-way from

$238
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$606
From Chicago O'Hare Intl to Heidelberg
Search Deals
One-way flight from Chicago O'Hare Intl to Heidelberg
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($244 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl 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 January 21, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Heidelberg that are best for you.

Fly from

O'Hare Intl

Fly to

Heidelberg

Route

Depart

Return

Price

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Wed 2/18

7:20 pm-2:30 pm

1 stop12h 10m

Frankfurt am Main

Wed 2/25

10:30 am-4:45 pm

1 stop13h 15m

$542

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Wed 3/11

8:20 pm-7:45 pm

1 stop17h 25m

Frankfurt am Main

Wed 3/18

10:30 am-9:49 pm

2 stops17h 19m

$639

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Thu 3/5

7:00 am-9:50 am

2 stops19h 50m

Frankfurt am Main

Thu 3/12

11:15 am-5:45 pm

1 stop12h 30m

$647

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Mon 1/26

9:40 am-5:55 am

1 stop13h 15m

Frankfurt am Main

Fri 1/30

11:15 am-7:36 pm

1 stop15h 21m

$660

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Sun 3/15

9:20 pm-5:00 pm

1 stop37h 40m

Frankfurt am Main

Tue 3/31

1:00 pm-6:15 pm

1 stop36h 15m

$680

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Wed 4/8

7:15 pm-7:45 pm

1 stop17h 30m

Frankfurt am Main

Tue 4/21

7:00 am-9:56 pm

2 stops21h 56m

$705

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Mon 3/16

8:20 pm-4:00 pm

2 stops13h 40m

Frankfurt am Main

Thu 3/19

11:15 am-5:45 pm

1 stop12h 30m

$715

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Tue 3/17

10:40 am-11:35 am

2 stops18h 55m

Frankfurt am Main

Thu 3/26

11:15 am-5:45 pm

1 stop12h 30m

$715

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Sat 2/21

7:20 pm-2:30 pm

1 stop12h 10m

Frankfurt am Main

Sat 3/7

7:55 am-8:17 pm

2 stops19h 22m

$721

ChicagoFrankfurt am Main

ORD - FRA

ORDFRA

Chicago O'Hare Intl

Fri 2/20

7:20 pm-2:30 pm

1 stop12h 10m

Frankfurt am Main

Sun 3/8

7:00 am-4:45 pm

2 stops16h 45m

$742

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 19 results
1
2

Best time to book a flight from O'Hare Intl to Heidelberg

Have a flexible travel schedule? Discover the best time to fly to Heidelberg from O'Hare Intl 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 O'Hare Intl Airport to Heidelberg

How far ahead should I book a flight from Chicago O'Hare Intl Airport to Heidelberg?

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to Heidelberg. Price data was last updated on January 16, 2026.

The price you pay for your flight from Chicago O'Hare Intl Airport to Heidelberg may vary depending on when you book. For the best chance of a lower fare, look to book 73 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Heidelberg?

Currently, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Heidelberg (average of $461). Flying from Chicago O'Hare Intl Airport to Heidelberg in June is currently the most expensive (average of $754). 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 ORD to HE1?

Find hourly flight availability from O'Hare Intl 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 January 21, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago O'Hare Intl Airport to Heidelberg as you normally would.

Weekly flight availability from Chicago O'Hare Intl Airport to Heidelberg

Explore weekly flight availability from O'Hare Intl 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 January 21, 2026.

The most flights from ORD to HE1 are scheduled on a Monday (10 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 on average).

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 January 21, 2026.
Read reviews from past customers who have flown United Airlines, Scandinavian Airlines, and Aer Lingus from Chicago O'Hare Intl Airport to Heidelberg. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,189 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,189 reviews
United Airlines
7.4
Good
9,189 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Scandinavian Airlines
7.3
Good
1,660 reviews
United Airlines
7.4
Good
9,189 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.2
Good
1,437 reviews
United Airlines
7.4
Good
9,189 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Icelandair
7.1
Good
602 reviews
United Airlines
7.4
Good
9,189 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Lufthansa
6.8
Okay
7,736 reviews
United Airlines
7.4
Good
9,189 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl 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 Chicago O'Hare Intl Airport to Heidelberg?

    Departing from Chicago O'Hare Intl Airport to Heidelberg will take you 12h 10m. The distance from Chicago O'Hare Intl Airport to Heidelberg is about 4328 mi.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Heidelberg one-way?

    One-way options have recently been found by users for as low as $221 on Icelandair. Other airlines that offer cheap prices include Scandinavian Airlines from $284 and Singapore Airlines from $350 one-way.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to Heidelberg?

    The top 3 most reliable airlines when flying from Chicago O'Hare Intl Airport to Heidelberg are Lufthansa (51%), Air Canada (49%) and United Airlines (49%).

  • What are the cheapest flights from Chicago O'Hare Intl Airport to Heidelberg?

    While on average a flight from Chicago O'Hare Intl Airport to Heidelberg is generally $2,663, our data shows the cheapest flight currently is $382. When looking at the most popular route, (Chicago O'Hare Intl - Frankfurt am Main), you can expect to pay $456 for that flight.

  • Can I find deals for flights from O'Hare Intl to Heidelberg that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Heidelberg flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Heidelberg?

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

  • Can I find deals for business class flights from O'Hare Intl to Heidelberg?

    Yes. Cheapflights offers flight deals from O'Hare Intl 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 O'Hare Intl Airport to Heidelberg?

    Currently, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Heidelberg (average of $461). Flying from Chicago O'Hare Intl Airport to Heidelberg in June is currently the most expensive (average of $754). 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 10 airlines flying from O'Hare Intl to Heidelberg

Discover the top 10 airlines that operate flights from O'Hare Intl 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$137Average$791FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$415Average$876FlexibilityNo cancel feeOn-time70%
TAP AIR PORTUGALCheapest$437Average$804FlexibilityNo cancel feeOn-timeN/A
LOTCheapest$462Average$1,076FlexibilityNo cancel feeOn-time81%
IcelandairCheapest$463Average$718FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$477Average$635FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$485Average$791FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$501Average$850FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$596Average$886FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$629Average$819FlexibilityNo cancel feeOn-time77%

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.