Philadelphia (PHL) to Bilbao (BIO) flight deal in economy from $351
$652 USD
-46%$351 USD
Verified 14 days agoNovember 2026
Mon
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Fair Availability
22% of dates checked are available within 10% of the lowest price
Saturday, November 21st, 2026
Outbound Flights
15h 30m·2 stops
$445 USD
PHLNov 21 11:00
→BOSNov 21 12:18
AA 2615Boeing 737
4h 42m layover
BOSNov 21 17:00
→MADNov 22 06:00
IB 348Airbus A321neo
1h 25m layover
MADNov 22 07:25
→BIONov 22 08:30
IB 429Airbus A320
15h 5m·1 stop
$1,112 USDPHLNov 21 19:50
→MADNov 22 08:55
AA 740Boeing 787
6h 55m layover
MADNov 22 15:50
→BIONov 22 16:55
IB 435Airbus A319
13h 30m·2 stops
$1,352 USDPHLNov 21 21:25
→LISNov 22 09:05
AA 258Boeing 787
3h 25m layover
LISNov 22 12:30
→MADNov 22 14:55
IB 1142Canadair Reg. Jet
55m layover
MADNov 22 15:50
→BIONov 22 16:55
IB 435Airbus A319