HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heidelberg

$315+ 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — FRA
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver 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 Denver Intl to Heidelberg are usually found in April or October, booked 63 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap 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 January 29, 2026.

This oojo deal was found by Cheapflights users on 1/27. 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 4/2010:36 am
DEN
-
FRA
2 stops25h 09m
British Airways
Mon 5/1110:55 am
FRA
-
DEN
1 stop19h 06m
British Airways
Deal found 1/27$637
This oojo deal was found by Cheapflights users on 1/27. 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 4/1412:53 pm
DEN
-
FRA
2 stops16h 57m
British Airways
Wed 5/1310:55 am
FRA
-
DEN
1 stop20h 44m
British Airways
Deal found 1/27$639
This Finnair deal was found by Cheapflights users on 1/27. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1510:28 am
DEN
-
FRA
1 stop14h 17m
Finnair
Thu 4/3011:30 am
FRA
-
DEN
2 stops19h 10m
Finnair
Deal found 1/27$640
This oojo deal was found by Cheapflights users on 1/27. 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 4/1612:49 pm
DEN
-
FRA
2 stops25h 51m
British Airways
Sun 5/107:40 pm
FRA
-
DEN
1 stop28h 50m
British Airways
Deal found 1/27$643
This British Airways deal was found by Cheapflights users on 1/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:40 pm
DEN
-
FRA
1 stop20h 05m
British Airways
Thu 4/3010:55 am
FRA
-
DEN
1 stop20h 44m
British Airways
Deal found 1/27$645
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 4/2410:28 am
DEN
-
FRA
1 stop14h 17m
American Airlines
Thu 4/309:20 am
FRA
-
DEN
1 stop17h 06m
American Airlines
Deal found 1/27$650
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Thu 11/2610:13 am
DEN
-
FRA
1 stop14h 42m
American Airlines
Thu 12/1010:55 am
FRA
-
DEN
1 stop16h 06m
American Airlines
Deal found 1/27$651
This Finnair deal was found by Cheapflights users on 1/27. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2612:21 pm
DEN
-
FRA
2 stops22h 19m
Finnair
Thu 12/107:25 pm
FRA
-
DEN
2 stops30h 22m
Finnair
Deal found 1/27$661

Find flight deals from Denver to Heidelberg

Keep the following information in mind while searching for Denver to Heidelberg flight deals. Data was last updated January 29, 2026.

Round-trip from

$637
(oojo)

One-way from

$315
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$1,131
From Denver Intl to Heidelberg
Search Deals
One-way flight from Denver Intl to Heidelberg
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($29 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 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 January 29, 2026.
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

Tue 3/3

6:00 am-2:30 pm

3 stops24h 30m

Frankfurt am Main

Thu 3/12

11:15 am-11:23 pm

2 stops19h 08m

$791

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Mon 4/27

6:40 am-2:35 pm

2 stops23h 55m

Frankfurt am Main

Fri 5/1

8:30 pm-11:19 pm

2 stops34h 49m

$886

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Thu 2/26

3:40 pm-12:05 pm

1 stop12h 25m

Frankfurt am Main

Thu 3/5

1:05 pm-6:05 pm

1 stop13h 00m

$897

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Mon 4/27

4:40 pm-1:00 pm

1 stop12h 20m

Frankfurt am Main

Fri 5/1

2:00 pm-7:00 pm

1 stop13h 00m

$905

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Wed 2/25

6:00 am-2:30 pm

2 stops24h 30m

Frankfurt am Main

Tue 3/10

6:55 am-9:46 pm

3 stops21h 51m

$923

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Sat 7/11

8:25 pm-9:15 pm

1 stop16h 50m

Frankfurt am Main

Sat 7/25

10:25 pm-6:25 pm

1 stop28h 00m

$953

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Wed 2/25

12:14 pm-9:50 am

1 stop13h 36m

Frankfurt am Main

Thu 3/5

8:35 am-10:59 pm

1 stop22h 24m

$970

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Tue 5/5

1:02 pm-6:00 pm

2 stops20h 58m

Frankfurt am Main

Sun 5/24

7:00 am-6:15 pm

1 stop19h 15m

$1,006

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Thu 3/19

6:35 pm-2:05 pm

1 stop12h 30m

Frankfurt am Main

Wed 4/1

1:30 pm-3:40 pm

Nonstop10h 10m

$1,037

DenverFrankfurt am Main

DEN - FRA

DENFRA

Denver Intl

Fri 3/6

11:59 pm-9:50 am

1 stop25h 51m

Frankfurt am Main

Sun 3/15

8:35 am-1:55 pm

1 stop36h 20m

$1,110

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 21 results
1
2
3

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 January 23, 2026.

Booking 63 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, April is the cheapest month in which you can book a flight from Denver to Heidelberg (average of $477). Flying from Denver to Heidelberg in June is currently the most expensive (average of $774). 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 January 29, 2026.

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 January 29, 2026.

The most flights from DEN to HE1 are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 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 29, 2026.
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
9,214 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

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
9,214 reviews
United Airlines
7.4
Good
9,214 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

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
Turkish Airlines
7.3
Good
4,208 reviews
United Airlines
7.4
Good
9,214 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

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
606 reviews
United Airlines
7.4
Good
9,214 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

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
7,753 reviews
United Airlines
7.4
Good
9,214 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

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
British Airways
6.7
Okay
7,705 reviews
United Airlines
7.4
Good
9,214 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

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 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 3 outbound flights to Heidelberg per day from 10 airlines. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.

  • How long is the flight from Denver to Heidelberg?

    For as low as $897, Scandinavian Airlines can have you in Heidelberg from Denver in 12h 25m. Airlines will cover a distance of 5022 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as $251. Users have also found prices from $434 and $436 on WestJet and Turkish Airlines, respectively.

  • 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 (74%), Lufthansa (74%).

  • What are the cheapest flights from Denver to Heidelberg?

    Looking at all options, your cheapest flight can be booked for $322. While the most popular route (Denver Intl - Frankfurt am Main) can be booked for $637 on average, our data indicates $1,282 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, April is the cheapest month in which you can book a flight from Denver to Heidelberg (average of $477). Flying from Denver to Heidelberg in June is currently the most expensive (average of $774). 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 Denver to Heidelberg

Discover the top 10 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$362Average$774FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$494Average$921FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$515Average$815FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$595Average$732FlexibilityNo cancel feeOn-time77%
KLMCheapest$603Average$925FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$610Average$925FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$644Average$871FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$694Average$1,357FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$699Average$1,144FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$701Average$1,030FlexibilityNo cancel feeOn-timeN/A

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.