British Airways Flight AA1577 Deals & Information (2025/2026)

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British Airways Flight 1577 Route Deals From $675

The cheapest prices found with in the last 7 days for return flights were $662 and $675 for one-way flights to Philadelphia Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Nov 20 - Sun, Nov 30
LIS
Humberto Delgado
PHL
Philadelphia Intl.
$662 Roundtrip, found 5 days ago
$662
Roundtrip
found 5 days ago
Select British Airways flight, departing Thu, Nov 20 from Humberto Delgado to Philadelphia Intl., returning Sun, Nov 30, priced at $662 found 5 days ago
Thu, Nov 6 - Wed, Nov 12
LIS
Humberto Delgado
PHL
Philadelphia Intl.
$662 Roundtrip, found 4 days ago
$662
Roundtrip
found 4 days ago
Select British Airways flight, departing Thu, Nov 6 from Humberto Delgado to Philadelphia Intl., returning Wed, Nov 12, priced at $662 found 4 days ago
Thu, Nov 20 - Sun, Nov 30
LIS
Humberto Delgado
PHL
Philadelphia Intl.
$672 Roundtrip, found 5 days ago
$672
Roundtrip
found 5 days ago
Select British Airways flight, departing Thu, Nov 20 from Humberto Delgado to Philadelphia Intl., returning Sun, Nov 30, priced at $672 found 5 days ago
Thu, Nov 6 - Wed, Nov 12
LIS
Humberto Delgado
PHL
Philadelphia Intl.
$679 Roundtrip, found 4 days ago
$679
Roundtrip
found 4 days ago
Select British Airways flight, departing Thu, Nov 6 from Humberto Delgado to Philadelphia Intl., returning Wed, Nov 12, priced at $679 found 4 days ago
Sat, Nov 22 - Sun, Nov 30
LIS
Humberto Delgado
PHL
Philadelphia Intl.
$681 Roundtrip, found 6 days ago
$681
Roundtrip
found 6 days ago
Select British Airways flight, departing Sat, Nov 22 from Humberto Delgado to Philadelphia Intl., returning Sun, Nov 30, priced at $681 found 6 days ago
Thu, Nov 20 - Sun, Nov 30
LIS
Humberto Delgado
PHL
Philadelphia Intl.
$683 Roundtrip, found 5 days ago
$683
Roundtrip
found 5 days ago
Select British Airways flight, departing Thu, Nov 20 from Humberto Delgado to Philadelphia Intl., returning Sun, Nov 30, priced at $683 found 5 days ago
Wed, Dec 31 - Sun, Jan 4
LIS
Humberto Delgado
PHL
Philadelphia Intl.
$687 Roundtrip, found 5 days ago
$687
Roundtrip
found 5 days ago
Select British Airways flight, departing Wed, Dec 31 from Humberto Delgado to Philadelphia Intl., returning Sun, Jan 4, priced at $687 found 5 days ago
Thu, Nov 6 - Wed, Nov 12
LIS
Humberto Delgado
PHL
Philadelphia Intl.
$690 Roundtrip, found 4 days ago
$690
Roundtrip
found 4 days ago
Select British Airways flight, departing Thu, Nov 6 from Humberto Delgado to Philadelphia Intl., returning Wed, Nov 12, priced at $690 found 4 days ago