How to Standby For an Earlier Flight on US Airways - Travel Tip
Do you want to take an earlier flight on your day of travel on US Airways without paying a rebooking fee or paying the fare difference for a walk-up ticket?
US Airways allows you to confirm a seat on an earlier flight for $25 if the flight is within the 48 US States and for $50 if the flight is from the 48 US States to Latin America, the Caribbean, Canada and Alaska. You can't confirm an earlier flight to Hawaii or Europe.
To confirm a seat on an earlier flight you must go to the airport. You can't do it over the phone.
You can confirm any earlier flight on the same day - so even if you booked the last flight in the evening you can show up in the morning at the airport and try to confirm an earlier flight.
If they can't confirm you on the earlier flight you want (because it is sold out) they will let you try and standby on the flight for free. But if there is an open seat you will have to pay the fee and get confirmed on the new flight.