Cheap flights from Portland to Sintra from CA $806

View CA $806 flight on Wed, Sep. 17, 2025Opens in a new window

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Cheap flights from Portland (PDX) to Sintra (LIS)

Prices were available within the past 7 days and start at CA $806 for one-way flights and CA $1,022 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed., Sep. 17 - Thu., Oct. 2
PDX
Portland
LIS
Lisbon
CA $1,022 Roundtrip, found 3 days ago
CA $1,022
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed., Sep. 17 from Portland to Lisbon, returning Thu., Oct. 2, priced at CA $1,022 found 3 days ago
Air Canada
Wed., Sep. 17 - Thu., Oct. 2
PDX
Portland
LIS
Lisbon
CA $1,032 Roundtrip, found 3 days ago
CA $1,032
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed., Sep. 17 from Portland to Lisbon, returning Thu., Oct. 2, priced at CA $1,032 found 3 days ago
Lufthansa
Wed., Sep. 17 - Thu., Oct. 2
PDX
Portland
LIS
Lisbon
CA $1,058 Roundtrip, found 3 days ago
CA $1,058
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Wed., Sep. 17 from Portland to Lisbon, returning Thu., Oct. 2, priced at CA $1,058 found 3 days ago
Iberia
Wed., Sep. 17 - Thu., Oct. 2
PDX
Portland
LIS
Lisbon
CA $1,391 Roundtrip, found 3 days ago
CA $1,391
Roundtrip
found 3 days ago
Select Iberia flight, departing Wed., Sep. 17 from Portland to Lisbon, returning Thu., Oct. 2, priced at CA $1,391 found 3 days ago
Scandinavian Airlines
Fri., Sep. 12 - Sat., Oct. 4
PDX
Portland
LIS
Lisbon
CA $1,419 Roundtrip, found 4 days ago
CA $1,419
Roundtrip
found 4 days ago
Select Scandinavian Airlines flight, departing Fri., Sep. 12 from Portland to Lisbon, returning Sat., Oct. 4, priced at CA $1,419 found 4 days ago
British Airways
Mon., Sep. 1 - Tue., Sep. 16
PDX
Portland
LIS
Lisbon
CA $1,751 Roundtrip, found 19 hours ago
CA $1,751
Roundtrip
found 19 hours ago
Select British Airways flight, departing Mon., Sep. 1 from Portland to Lisbon, returning Tue., Sep. 16, priced at CA $1,751 found 19 hours ago
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