Find flights
When to book
Airlines
FAQs

Cheap flights from Cardiff to Heidelberg from £203

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 27/12. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — FRA
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cardiff to Heidelberg

Keep the following information in mind while searching for Cardiff to Heidelberg flight deals. Data was last updated 31 October 2025.

Round-trip from

£212

One-way from

£203

Popular in

May

Cheapest in

January

Average price

£362
KLM
  • KLM
  • 14/12-21/12
  • 2 total stops
  • 32h 20m total
  • Cardiff to Heidelberg
Search Deals
27/12
  • 27/12
  • 2 total stops
  • 20h 50m total
  • Cardiff to Heidelberg
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£43 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Cardiff to Heidelberg

Enter your travel dates to find the best prices.

Cheapest flights from Cardiff to Heidelberg
Explore the most affordable flight options available from Cardiff to Heidelberg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 October 2025.

Sun 14/1221:20CWL - FRA
1 stop11h 45mMultiple Airlines
Sun 21/1214:15FRA - CWL
1 stop20h 35mMultiple Airlines
Deal found 30/10£212
Fri 14/1122:25CWL - FRA
1 stop10h 40mMultiple Airlines
Thu 20/1106:55FRA - CWL
1 stop3h 55mMultiple Airlines
Deal found 29/10£224
Thu 4/1210:30CWL - FRA
1 stop8h 50mMultiple Airlines
Sun 7/1210:10FRA - CWL
1 stop11h 45mMultiple Airlines
Deal found 29/10£238
Fri 31/1010:20CWL - FRA
1 stop5h 55mKLM
Sun 2/1118:30FRA - CWL
1 stop16h 20mKLM
Deal found 29/10£452

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff 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 858,174 searches. Data last updated 31 October 2025.
Use the filters below to find and compare flights from Cardiff to Heidelberg that are best for you.

Fly from

Cardiff

Fly to

Heidelberg

Route

Depart

Return

Price

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Sun 14/12

21:20-10:05

1 stop11h 45m

Frankfurt am Main

Sun 21/12

14:15-09:50

1 stop20h 35m

£212

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Fri 14/11

22:25-10:05

1 stop10h 40m

Frankfurt am Main

Thu 20/11

06:55-09:50

1 stop3h 55m

£224

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Thu 12/2

10:30-19:20

1 stop7h 50m

Frankfurt am Main

Sun 15/2

10:10-20:55

1 stop11h 45m

£238

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Thu 4/12

10:30-20:20

1 stop8h 50m

Frankfurt am Main

Sun 7/12

10:10-20:55

1 stop11h 45m

£238

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Sat 27/12

20:05-17:55

2 stops20h 50m

£203

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Fri 10/4

17:15-21:45

1 stop3h 30m

£208

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Fri 10/4

09:00-21:50

2 stops35h 50m

£237

Flights are sorted by cheapest return flights first.

Deals found on 29/10

Best time to book a flight from Cardiff to Heidelberg

Have a flexible travel schedule? Discover the best time to fly to Heidelberg from Cardiff with our price prediction graph.
Estimated return 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 Cardiff to Heidelberg

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

Currently, July is the cheapest month in which you can book a flight from Cardiff to Heidelberg (average of £132). Flying from Cardiff to Heidelberg in November is currently the most expensive (average of £228). 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 31 October 2025.
Check out reviews from past customers who have flown with KLM from Cardiff to Heidelberg to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,406 reviews
Check prices

Crew

8.4

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,406 reviews
KLM
7.7
Good
1,406 reviews
Check prices

Crew

8.4

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Food

7.3

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

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

    Most people fly from Cardiff Wales (CWL) if they book a flight from Cardiff to Heidelberg. On average, Cardiff Wales has 0 outbound flights to Heidelberg per day from 1 airline. Cardiff Wales is conveniently located just 9.1 mi from Cardiff’s city center.

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from Cardiff to Heidelberg (average of £132). Flying from Cardiff to Heidelberg in November is currently the most expensive (average of £228). 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 airline flying from Cardiff to Heidelberg

Discover the top airline that operate flights from Cardiff 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 858,174 searches. Data last updated 31 October 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£236Average£337FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Cardiff to Heidelberg?

Cheapflights helps you search for flights from Cardiff to Heidelberg via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Heidelberg?

Cheapflights helps you find that perfect flight to Heidelberg from Cardiff by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Cardiff to Heidelberg with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Cardiff to Heidelberg flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Cardiff to Heidelberg become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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.