Overbookings (Involuntarily Denied Boarding)
For passengers traveling in interstate transportation between points within the United States, subject to some exceptions, United shall pay compensation to passengers denied boarding involuntarily from an oversold flight at the rate of 200% of the fare to the passenger's first stopover or, if none, final destination, with a maximum of $675, if United offers alternate transportation that, at the time the arrangement is made, is planned to arrive at the passenger's destination or first stopover more than one hour but less than two hours after the planned arrival time of the passenger's original flight.
If United offers alternate transportation that, at the time the arrangement is made, is planned to arrive at the passenger's destination or first stopover more than two hours after the planned arrival time of the passenger's original flight, United shall pay compensation to passengers denied boarding involuntarily from an oversold flight at the rate of 400% of the fare to the passenger's first stopover or, if none, final destination, with a maximum of $1,350.
IN CASH NOT VOUCHERS!
If not enough volunteers are found, the airline has the power to decide who gets ?bumped? off the flight, though that typically happens before boarding
The Department of Transportation does have clear guidance about compensation due to fliers "involuntarily denied boarding," and that can pay off in the case of a significant inconvenience. For example, an involuntarily bumped traveler who arrives to his final destination more than two hours late (fours internationally) is entitled to an amount worth 400% of his one-way fare (capped at a maximum of $1,350).
In the event there are not enough volunteers ? as was the case with Sunday?s Flight 3411 ? United's contract says preference will be given to ?Qualified Individuals with Disabilities, unaccompanied minors under the age of 18 years, or minors between the ages of 5 to 15 years who use the unaccompanied minor service ?.?
Beyond that, United does not spell out a hard and fast rule. Instead, the airline says only that ?the priority of all other confirmed passengers may be determined based on a passenger?s fare class, itinerary, status of frequent-flier program membership, and the time in which the passenger presents him/herself for check-in without advanced seat assignment.?