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AF
Air France
DL
Delta Air Lines
KL
KLM
One Way
•
Economy
PDX
Portland International Airport
Portland, United States
BIO
Bilbao Airport
Bilbao, Spain
$773 USD
-55%
$350
USD
Verified Mar 22, 2026 at 7:46 PM
March 2026
Today
Mon
Tue
Wed
Thu
Fri
Sat
Sun
23
24
25
26
27
28
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
$952
23
$674
24
$649
25
$699
26
$789
27
$789
28
$731
29
$699
30
$699
31
$699
1
$699
2
$759
3
$759
4
$759
5
$699
Extremely Rare Availability
2% of dates checked are available within 10% of the lowest price
Tuesday, March 31st, 2026
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