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Cheap flights from Cardiff to Heidelberg from £160

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 30/6. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — FRA
19 Jun — 26 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap 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 20 May 2026.

Mon 15/613:35
CWL
-
FRA
2 stops24h 25m
Multiple Airlines
Wed 17/614:00
FRA
-
CWL
2 stops10h 05m
Multiple Airlines
Deal found 19/5£226
Fri 30/1010:20
CWL
-
FRA
1 stop22h 20m
KLM
Thu 5/1106:55
FRA
-
CWL
1 stop3h 55m
KLM
Deal found 15/5£238
Fri 3/717:15
CWL
-
FRA
1 stop15h 20m
KLM
Fri 10/714:15
FRA
-
CWL
1 stop3h 30m
KLM
Deal found 19/5£245
Sat 20/617:35
CWL
-
FRA
1 stop15h 00m
KLM
Wed 24/618:40
FRA
-
CWL
1 stop15h 35m
KLM
Deal found 15/5£267
Fri 30/1010:20
CWL
-
FRA
2 stops10h 45m
Multiple Airlines
Thu 5/1118:35
FRA
-
CWL
1 stop16h 15m
Multiple Airlines
Deal found 15/5£283
Fri 3/713:45
CWL
-
FRA
2 stops24h 15m
Multiple Airlines
Fri 10/720:40
FRA
-
CWL
1 stop11h 15m
Multiple Airlines
Deal found 19/5£287

Find flight deals from Cardiff to Heidelberg

Keep the following information in mind while searching for Cardiff to Heidelberg flight deals. Data was last updated 20 May 2026.

Round-trip from

£226

One-way from

£160

Popular in

June

Cheapest in

April

Average price

£363
15/6-17/6
  • 15/6-17/6
  • 4 total stops
  • 34h 30m total
  • Cardiff to Heidelberg
Search Deals
30/6
  • 30/6
  • 1 total stop
  • 10h 00m total
  • Cardiff to Heidelberg
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£30 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 20 May 2026.
Use the filters below to find and compare flights from Cardiff to Heidelberg that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Fri 30/10

10:20-09:40

1 stop22h 20m

Frankfurt am Main

Thu 5/11

06:55-09:50

1 stop3h 55m

£238
Fastest return journey

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Fri 3/7

17:15-09:35

1 stop15h 20m

Frankfurt am Main

Fri 10/7

14:15-16:45

1 stop3h 30m

£245

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Mon 15/6

22:10-09:05

1 stop9h 55m

Frankfurt am Main

Wed 17/6

14:00-23:05

2 stops10h 05m

£257

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Sat 20/6

17:35-09:35

1 stop15h 00m

Frankfurt am Main

Wed 24/6

18:40-09:15

1 stop15h 35m

£267

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Fri 30/10

10:20-22:05

2 stops10h 45m

Frankfurt am Main

Thu 5/11

18:35-09:50

1 stop16h 15m

£283

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Fri 3/7

13:45-15:00

2 stops24h 15m

Frankfurt am Main

Fri 10/7

20:40-06:55

1 stop11h 15m

£287

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Fri 5/6

17:15-09:35

1 stop15h 20m

Frankfurt am Main

Thu 11/6

14:15-09:15

1 stop20h 00m

£314

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Fri 19/6

17:15-09:35

1 stop15h 20m

Frankfurt am Main

Fri 26/6

14:15-09:15

1 stop20h 00m

£401
Cheapest one-way
Fastest single journey

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Wed 1/7

23:30-10:15

1 stop9h 45m

£167

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Tue 30/6

12:45-08:20

2 stops18h 35m

£205

Flights are sorted by cheapest return flights first.

Deals found on 19/5

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

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

How much does it cost for a return flight from Cardiff to Heidelberg?

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 20 May 2026.
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
7.8
Good
1,516 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.2

Overall

7.8

Crew

8.4

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,516 reviews
KLM
7.8
Good
1,516 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.2

Overall

7.8

Crew

8.4

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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.

  • How long is the flight from Cardiff to Heidelberg?

    A quick flight from Cardiff to Heidelberg can take about 22h 20m. KLM provides one of the quickest options available for as low as £238. The distance between Cardiff and Heidelberg is about 528 mi.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 20 May 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£235Average£299FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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

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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.

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