Cheap flights from Houston to Serra da Estrela from CA $630

View CA $630 flight on Wed, Oct. 29, 2025Opens in a new window

Popular airlines from Houston to Serra da Estrela

  • Air Canada

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  • WestJet

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  • American Airlines

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  • United

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  • Delta

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Cheap flights from Houston (HOU) to Serra da Estrela (OPO)

Prices were available within the past 7 days and start at CA $630 for one-way flights and CA $809 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Tue, Feb. 17 - Wed, Feb. 25
IAH
Houston
LIS
Lisbon
CA $809 Roundtrip, found 5 hours ago
CA $809
Roundtrip
found 5 hours ago
Select British Airways flight, departing Tue, Feb. 17 from Houston to Lisbon, returning Wed, Feb. 25, priced at CA $809 found 5 hours ago
British Airways
Tue, Feb. 17 - Wed, Feb. 25
IAH
Houston
LIS
Lisbon
CA $809 Roundtrip, found 5 hours ago
CA $809
Roundtrip
found 5 hours ago
Select British Airways flight, departing Tue, Feb. 17 from Houston to Lisbon, returning Wed, Feb. 25, priced at CA $809 found 5 hours ago
Virgin Atlantic
Tue, Feb. 17 - Wed, Feb. 25
IAH
Houston
LIS
Lisbon
CA $812 Roundtrip, found 5 hours ago
CA $812
Roundtrip
found 5 hours ago
Select Virgin Atlantic flight, departing Tue, Feb. 17 from Houston to Lisbon, returning Wed, Feb. 25, priced at CA $812 found 5 hours ago
Delta
Tue, Feb. 17 - Wed, Feb. 25
IAH
Houston
LIS
Lisbon
CA $812 Roundtrip, found 5 hours ago
CA $812
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, Feb. 17 from Houston to Lisbon, returning Wed, Feb. 25, priced at CA $812 found 5 hours ago
American Airlines
Tue, Feb. 17 - Wed, Feb. 25
IAH
Houston
LIS
Lisbon
CA $812 Roundtrip, found 5 hours ago
CA $812
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Tue, Feb. 17 from Houston to Lisbon, returning Wed, Feb. 25, priced at CA $812 found 5 hours ago
Air Canada
Tue, Feb. 17 - Wed, Feb. 25
IAH
Houston
LIS
Lisbon
CA $813 Roundtrip, found 5 hours ago
CA $813
Roundtrip
found 5 hours ago
Select Air Canada flight, departing Tue, Feb. 17 from Houston to Lisbon, returning Wed, Feb. 25, priced at CA $813 found 5 hours ago

Find the cheapest month to fly from Houston (HOU) to Lisbon (LIS)

February is typically the cheapest month to fly

From CA $696 - CA $1,382 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.