On April 18 United Airlines raised its change fee for most nonrefundable domestic airfares to $200 from $150. US Airways matched the increase last week. Yesterday American and Delta joined in, matching the $50 fee increase.
These fees affect the cheapest tickets.
Less-restrictive coach fares with higher prices and refundable tickets typically don't carry a change fee and remain unchanged at all carriers.
Southwest Airlines does not charge a change fee
, but it recently announced a new policy on no-shows. Passengers on the cheapest tickets will have to cancel a reservation before departure, otherwise they won't be able to apply credit from the missed flight toward a later trip.