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Heidelberg

$331+ Cheap flights from Denver (DEN) 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — FRA
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Heidelberg are usually found in October or April, booked 89 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Denver to Heidelberg

Keep the following information in mind while searching for Denver to Heidelberg flight deals. Data was last updated August 14, 2025.

Round-trip from

$700
(Iberia)

One-way from

$331
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$858
From Denver Intl to Heidelberg
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One-way flight from Denver Intl to Heidelberg
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Highest demand for flights based on searches. 15% potential increase in price ($185 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Denver to Heidelberg

Cheapest flights from Denver to Heidelberg
Explore the most affordable flight options available from Denver to Heidelberg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Iberia deal was found by Cheapflights users on 8/14. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/265:25 pmDEN - FRA
1 stop15h 15mMultiple Airlines
Tue 12/167:35 pmFRA - DEN
2 stops34h 42mMultiple Airlines
Deal found 8/14$700
This Condor deal was found by Cheapflights users on 8/14. 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.
Sat 9/271:06 pmDEN - FRA
1 stop15h 14mMultiple Airlines
Tue 10/711:40 amFRA - DEN
1 stop18h 09mMultiple Airlines
Deal found 8/14$701
This CheapOair deal was found by Cheapflights users on 8/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/158:10 amDEN - FRA
1 stop20h 00mMultiple Airlines
Sat 10/252:05 pmFRA - DEN
1 stop15h 41mMultiple Airlines
Deal found 8/14$702
This oojo deal was found by Cheapflights users on 8/13. 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 11/183:40 pmDEN - FRA
1 stop12h 25mIcelandair
Wed 11/261:05 pmFRA - DEN
1 stop13h 00mIcelandair
Deal found 8/13$703
This oojo deal was found by Cheapflights users on 8/14. 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 10/284:40 pmDEN - FRA
1 stop12h 25mIcelandair
Mon 11/101:05 pmFRA - DEN
1 stop13h 00mIcelandair
Deal found 8/14$704
This Orbitz deal was found by Cheapflights users on 8/13. 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.
Wed 9/310:31 amDEN - FRA
1 stop14h 14mIberia
Wed 9/1710:55 amFRA - DEN
1 stop16h 52mIberia
Deal found 8/13$705
This FlightHub deal was found by Cheapflights users on 8/12. 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.
Sun 10/194:40 pmDEN - FRA
1 stop12h 20mIcelandair
Sun 11/21:05 pmFRA - DEN
1 stop13h 00mIcelandair
Deal found 8/12$706
This Expedia deal was found by Cheapflights users on 8/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/168:10 amDEN - FRA
1 stop20h 00mMultiple Airlines
Sat 10/252:05 pmFRA - DEN
1 stop15h 41mMultiple Airlines
Deal found 8/14$711
This Ticket deal was found by Cheapflights users on 8/13. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/54:40 pmDEN - FRA
1 stop15h 25mIcelandair
Tue 10/212:00 pmFRA - DEN
1 stop12h 55mIcelandair
Deal found 8/13$714

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver 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 August 14, 2025.
Use the filters below to find and compare flights from Denver to Heidelberg that are best for you.

Fly from

Denver

Fly to

Heidelberg

Route

Depart

Return

Price

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Sat 9/27

1:06 pm-12:20 pm

1 stop15h 14m

Frankfurt am Main

Tue 10/7

11:40 am-9:49 pm

1 stop18h 09m

$701

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Wed 11/26

12:27 pm-2:05 pm

2 stops17h 38m

Frankfurt am Main

Tue 12/16

11:25 am-10:17 pm

2 stops18h 52m

$711

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Sat 10/18

4:40 pm-4:05 pm

1 stop15h 25m

Frankfurt am Main

Sun 11/2

1:05 pm-6:05 pm

1 stop13h 00m

$729

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Wed 10/22

4:40 pm-1:00 pm

1 stop12h 20m

Frankfurt am Main

Tue 11/4

1:05 pm-6:05 pm

1 stop13h 00m

$729

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Thu 10/23

4:40 pm-4:05 pm

1 stop15h 25m

Frankfurt am Main

Tue 11/4

1:05 pm-6:05 pm

1 stop13h 00m

$729

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Sun 10/19

4:40 pm-1:00 pm

1 stop12h 20m

Frankfurt am Main

Tue 11/4

1:05 pm-6:05 pm

1 stop13h 00m

$729

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Fri 10/17

4:40 pm-1:00 pm

1 stop12h 20m

Frankfurt am Main

Sun 11/2

1:05 pm-6:05 pm

1 stop13h 00m

$729

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Thu 10/23

4:40 pm-4:05 pm

1 stop15h 25m

Frankfurt am Main

Mon 11/3

1:05 pm-6:05 pm

1 stop13h 00m

$729

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Fri 10/17

4:40 pm-1:00 pm

1 stop12h 20m

Frankfurt am Main

Mon 11/3

1:05 pm-6:05 pm

1 stop13h 00m

$729

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Sat 10/18

4:40 pm-4:05 pm

1 stop15h 25m

Frankfurt am Main

Mon 11/3

1:05 pm-6:05 pm

1 stop13h 00m

$729

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 18 results
1
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Best time to book a flight from Denver to Heidelberg

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

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to Heidelberg. Price data was last updated on August 8, 2025.

Booking 89 days in advance of your planned departure date is, on average, the best time to get cheap flights from Denver to Heidelberg. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Denver to Heidelberg (average of $729). Flying from Denver to Heidelberg in June is currently the most expensive (average of $1,091). 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 DEN to HE1?

Find hourly flight availability from Denver 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 August 14, 2025.

When flying from Denver 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.

Weekly flight availability from Denver to Heidelberg

Explore weekly flight availability from Denver 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 August 14, 2025.

The most flights from DEN to HE1 are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 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 August 14, 2025.
Read through reviews of airlines operating flights from Denver to Heidelberg, such as United Airlines, Turkish Airlines, and Icelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,916 reviews
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Turkish Airlines
7.3
Good
3,940 reviews
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Icelandair
7.0
Good
526 reviews
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Lufthansa
6.8
Okay
7,317 reviews
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
British Airways
6.7
Okay
7,266 reviews
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Denver 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 Denver to Heidelberg?

    Most people fly from Denver Intl (DEN) if they book a flight from Denver to Heidelberg. On average, Denver Intl has 5 outbound flights to Heidelberg per day from 9 airlines. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to Heidelberg on time: Air Canada (87%), United Airlines (78%), Lufthansa (78%).

  • What are the cheapest flights from Denver to Heidelberg?

    Looking at all options, your cheapest flight can be booked for $397. While the most popular route (Denver Intl - Frankfurt am Main) can be booked for $555 on average our data indicates $2,079 when flying from Denver to Heidelberg.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Denver to Heidelberg (average of $729). Flying from Denver to Heidelberg in June is currently the most expensive (average of $1,091). 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 9 airlines flying from Denver to Heidelberg

Discover the top 9 airlines that operate flights from Denver 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$454Average$716FlexibilityNo cancel feeOn-time76%
DeltaCheapest$542Average$774FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$543Average$925FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$549Average$865FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$596Average$682FlexibilityNo cancel feeOn-time71%
Turkish AirlinesCheapest$623Average$817FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$707Average$1,437FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$718Average$1,047FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$764Average$1,345FlexibilityNo cancel feeOn-time69%

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