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US Dollar
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DL
Delta Air Lines
One Way
•
Economy
PDX
Portland International Airport
Portland, United States
LIS
Portela Airport
Lisbon, Portugal
$611 USD
-39%
$371
USD
Verified Mar 21, 2026 at 10:21 PM
April 2026
Today
Mon
Tue
Wed
Thu
Fri
Sat
Sun
30
$703
31
$707
1
$707
2
$767
3
$822
4
$818
5
$758
6
$762
7
$654
8
$654
9
$670
10
$670
11
$666
12
$654
13
$654
14
$654
15
$517
16
$567
17
$567
18
$560
19
$513
20
$517
21
$517
22
$517
23
$564
24
$560
25
$564
26
$513
27
$513
28
$513
29
$517
30
$564
1
2
3
Limited Availability
16% of dates checked are available within 10% of the lowest price
Wednesday, April 1st, 2026
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