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AF
Air France
DL
Delta Air Lines
KL
KLM
One Way
•
Economy
PDX
Portland International Airport
Portland, United States
LIS
Portela Airport
Lisbon, Portugal
$610 USD
-34%
$403
USD
Verified Apr 5, 2026 at 9:26 AM
May 2026
Today
Mon
Tue
Wed
Thu
Fri
Sat
Sun
27
$499
28
$503
29
$503
30
$553
1
$553
2
$553
3
$503
4
$503
5
$499
6
$503
7
$549
8
$553
9
$553
10
$734
11
$734
12
$734
13
$738
14
$798
15
$799
16
$748
17
$739
18
$738
19
$738
20
$739
21
$798
22
$965
23
$914
24
$891
25
$891
26
$891
27
$891
28
$961
29
$961
30
$914
31
$891
Fair Availability
22% of dates checked are available within 10% of the lowest price
Saturday, May 16th, 2026
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