United Flights from Lisbon (LIS) to Boston (BOS)

My dates are flexible

From

DepartType in the date format using 2 numbers for day and month and 4 numbers for the year in the following order.: month, two characters; day, two characters; year, 4 characters mm/dd/YYYY

Type in the date format using 2 numbers for day and month and 4 numbers for the year in the following order.Type in the date format using 2 numbers for day and month and 4 numbers for the year in the following order.: month, two characters; day, two characters; year, 4 characters mm/dd/YYYY

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0Traveler

Adults (18-64)

Seniors (65+)

Children (15-17)

Children (12-14)

Children (5-11)

Children (2-4)

Infants under 2

Infants on lap

Travel Class

Economy Class

Business Class