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Cheap flights from Cardiff to Bilbao from £103

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BIO
28 Apr — 5 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cardiff to Bilbao

Enter your travel dates to find the best prices.

Cheapest flights from Cardiff to Bilbao
Explore the most affordable flight options available from Cardiff to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 March 2026.

Tue 5/521:45
CWL
-
BIO
1 stop10h 55m
Multiple Airlines
Tue 12/512:00
BIO
-
CWL
2 stops11h 50m
Multiple Airlines
Deal found 25/3£103
Mon 11/513:35
CWL
-
BIO
2 stops17h 40m
Multiple Airlines
Mon 18/521:40
BIO
-
CWL
2 stops26h 10m
Multiple Airlines
Deal found 27/3£110
Tue 12/515:00
CWL
-
BIO
1 stop7h 10m
Multiple Airlines
Wed 13/511:30
BIO
-
CWL
1 stop10h 00m
Multiple Airlines
Deal found 27/3£126
Fri 8/515:35
CWL
-
BIO
1 stop6h 35m
Multiple Airlines
Fri 15/506:45
BIO
-
CWL
1 stop7h 20m
Multiple Airlines
Deal found 24/3£136

Find flight deals from Cardiff to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to Bilbao (BIO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 29 March 2026.

Round-trip from

£103
5/5-12/5
  • 5/5-12/5
  • 3 total stops
  • 22h 45m total
  • Cardiff to Bilbao
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff to Bilbao 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 29 March 2026.
Use the filters below to find and compare flights from Cardiff to Bilbao that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CardiffBilbao

CWL - BIO

CWLBIO

Cardiff Wales

Tue 5/5

21:45-21:35

2 stops22h 50m

Bilbao

Tue 12/5

12:00-22:50

2 stops11h 50m

£108

CardiffBilbao

CWL - BIO

CWLBIO

Cardiff Wales

Mon 11/5

13:35-08:15

2 stops17h 40m

Bilbao

Mon 18/5

21:25-22:50

3 stops26h 25m

£124

CardiffBilbao

CWL - BIO

CWLBIO

Cardiff Wales

Fri 8/5

15:35-23:10

1 stop6h 35m

Bilbao

Fri 15/5

13:25-06:55

2 stops18h 30m

£139

CardiffBilbao

CWL - BIO

CWLBIO

Cardiff Wales

Fri 24/4

15:35-23:10

1 stop6h 35m

Bilbao

Fri 1/5

13:45-06:55

3 stops18h 10m

£164
Fastest return journey

CardiffBilbao

CWL - BIO

CWLBIO

Cardiff Wales

Fri 21/8

22:45-15:10

2 stops15h 25m

Bilbao

Tue 25/8

14:35-22:50

2 stops9h 15m

£226

CardiffBilbao

CWL - BIO

CWLBIO

Cardiff Wales

Fri 22/5

13:45-22:25

1 stop7h 40m

Bilbao

Sun 24/5

14:55-10:00

1 stop20h 05m

£314

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Sorted by cheapest first

Best time to book a flight from Cardiff to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao 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.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to Bilbao. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Cardiff to Bilbao by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Alternative routes for Cardiff to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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

Deals for Cardiff to Bilbao flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Cardiff to Bilbao.

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

Need flexible booking options for your flight to Bilbao from Cardiff? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for Cardiff to Bilbao flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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