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Cheap flights from Cardiff to Bilbao from £106

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BIO
18 May — 25 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 18 April 2026.

Tue 2/621:45
CWL
-
BIO
1 stop10h 55m
Multiple Airlines
Tue 9/622:50
BIO
-
CWL
3 stops25h 15m
Multiple Airlines
Deal found 18/4£106
Mon 4/520:40
CWL
-
BIO
1 stop10h 25m
Multiple Airlines
Tue 12/522:50
BIO
-
CWL
3 stops25h 15m
Multiple Airlines
Deal found 17/4£112
Mon 4/520:40
CWL
-
BIO
1 stop10h 25m
Vueling
Tue 12/518:15
BIO
-
CWL
1 stop27h 15m
Vueling
Deal found 17/4£113
Sun 31/521:45
CWL
-
BIO
2 stops23h 55m
Multiple Airlines
Sun 7/607:10
BIO
-
CWL
1 stop8h 10m
Multiple Airlines
Deal found 16/4£153
Fri 29/522:45
CWL
-
BIO
3 stops32h 30m
Multiple Airlines
Fri 5/618:10
BIO
-
CWL
2 stops13h 45m
Multiple Airlines
Deal found 14/4£154
Fri 1/522:45
CWL
-
BIO
2 stops13h 00m
Multiple Airlines
Tue 5/522:10
BIO
-
CWL
2 stops25h 55m
Multiple Airlines
Deal found 15/4£168

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 18 April 2026.

Round-trip from

£106
2/6-9/6
  • 2/6-9/6
  • 4 total stops
  • 36h 10m 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 18 April 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 2/6

21:45-09:40

1 stop10h 55m

Bilbao

Tue 9/6

22:50-23:05

3 stops25h 15m

£106

CardiffBilbao

CWL - BIO

CWLBIO

Cardiff Wales

Sun 31/5

21:45-22:40

2 stops23h 55m

Bilbao

Sun 7/6

07:10-14:20

1 stop8h 10m

£153

CardiffBilbao

CWL - BIO

CWLBIO

Cardiff Wales

Mon 4/5

22:10-23:00

3 stops23h 50m

Bilbao

Tue 12/5

22:50-23:05

3 stops25h 15m

£154

CardiffBilbao

CWL - BIO

CWLBIO

Cardiff Wales

Fri 1/5

22:45-12:45

2 stops13h 00m

Bilbao

Tue 5/5

22:10-23:05

2 stops25h 55m

£168
Fastest return journey

CardiffBilbao

CWL - BIO

CWLBIO

Cardiff Wales

Fri 29/5

15:35-23:10

1 stop6h 35m

Bilbao

Fri 5/6

06:45-13:05

1 stop7h 20m

£178

CardiffBilbao

CWL - BIO

CWLBIO

Cardiff Wales

Sun 13/9

21:45-21:00

2 stops22h 15m

Bilbao

Tue 6/10

07:00-15:50

1 stop9h 50m

£211

Flights are sorted by cheapest return flights first.

Deals found on 18/4

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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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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