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Cheap flights from Cardiff to Heidelberg from £64

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 29/3. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — FRA
21 Mar — 28 Mar1
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 19 February 2026.

Thu 23/422:50
CWL
-
FRA
1 stop10h 25m
Multiple Airlines
Mon 27/410:55
FRA
-
CWL
1 stop12h 05m
Multiple Airlines
Deal found 19/2£137
Mon 13/422:25
CWL
-
FRA
1 stop10h 50m
Multiple Airlines
Mon 20/415:45
FRA
-
CWL
1 stop7h 15m
Multiple Airlines
Deal found 16/2£176
Thu 9/422:50
CWL
-
FRA
1 stop10h 25m
Multiple Airlines
Mon 13/406:55
FRA
-
CWL
1 stop16h 05m
Multiple Airlines
Deal found 19/2£179
Mon 16/323:30
CWL
-
FRA
1 stop9h 35m
Multiple Airlines
Mon 23/311:50
FRA
-
CWL
2 stops12h 15m
Multiple Airlines
Deal found 16/2£188
Sun 22/321:20
CWL
-
FRA
1 stop11h 45m
Multiple Airlines
Thu 26/314:15
FRA
-
CWL
1 stop20h 35m
Multiple Airlines
Deal found 16/2£208
Fri 6/322:25
CWL
-
FRA
1 stop10h 40m
Multiple Airlines
Thu 12/306:55
FRA
-
CWL
1 stop3h 55m
Multiple Airlines
Deal found 17/2£219

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 19 February 2026.

Round-trip from

£137

One-way from

£64

Popular in

May

Cheapest in

November

Average price

£326
23/4-27/4
  • 23/4-27/4
  • 2 total stops
  • 22h 30m total
  • Cardiff to Heidelberg
Search Deals
29/3
  • 29/3
  • 1 total stop
  • 11h 30m total
  • Cardiff to Heidelberg
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£32 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 19 February 2026.
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

Thu 23/4

22:50-10:15

1 stop10h 25m

Frankfurt am Main

Mon 27/4

10:55-22:00

1 stop12h 05m

£137

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Thu 9/4

22:50-10:15

1 stop10h 25m

Frankfurt am Main

Mon 13/4

06:55-22:00

1 stop16h 05m

£179

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Mon 16/3

23:30-10:05

1 stop9h 35m

Frankfurt am Main

Mon 23/3

11:50-23:05

2 stops12h 15m

£188

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Mon 13/4

22:25-10:15

1 stop10h 50m

Frankfurt am Main

Mon 20/4

07:00-22:00

2 stops16h 00m

£202

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Sun 22/3

21:20-10:05

1 stop11h 45m

Frankfurt am Main

Thu 26/3

14:15-09:50

1 stop20h 35m

£208

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Fri 6/3

22:25-10:05

1 stop10h 40m

Frankfurt am Main

Thu 12/3

06:55-09:50

1 stop3h 55m

£219

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Sat 21/3

20:05-10:05

1 stop13h 00m

Frankfurt am Main

Sat 28/3

18:30-08:15

1 stop14h 45m

£234

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Sun 29/3

21:45-10:15

1 stop11h 30m

£64

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Wed 1/4

23:50-10:15

1 stop9h 25m

£67

CardiffFrankfurt am Main

CWL - FRA

CWLFRA

Cardiff Wales

Mon 30/3

22:25-10:15

1 stop10h 50m

£67

Flights are sorted by cheapest return flights first.

Deals found on 17/2

Showing 1-10 of 18 results
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

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

Currently, September is the cheapest month in which you can book a flight from Cardiff to Heidelberg (average of £149). Flying from Cardiff to Heidelberg in January is currently the most expensive (average of £243). 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 19 February 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
7.7
Good
1,459 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Food

7.3

Crew

8.4

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.7
Good
1,459 reviews
KLM
7.7
Good
1,459 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Food

7.3

Crew

8.4

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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, September is the cheapest month in which you can book a flight from Cardiff to Heidelberg (average of £149). Flying from Cardiff to Heidelberg in January is currently the most expensive (average of £243). 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 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 19 February 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£233Average£320FlexibilityNo 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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