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Economy Plus is available on all aircraft in the domestic and international fleet,Economy Plus seats are located in the front 6-12 rows of the economy cabin, feature between 4 and 6 inches of added legroom
Economy Plus seating is given to ticketed economy passengers who:
hold elite status in the Mileage Plus program (see below);
subscribe to "Economy Plus Access" on an annual basis; or
pay an additional fee at check-in, which varies based on the duration of the flight. Domestic Economy Plus upgrades cost from $14 to $65 depending on the distance travelled