Southwest Airlines on Monday raised fares by $4 to $10 round trip, depending on mileage, in what it says is an effort to offset rising fuel costs.
The move follows an airfare hike by JetBlue Airways on Thursday of $10 round trip on most domestic flights. Virgin America over the weekend increased fares by $2 for short one-way flights and $5 for long one-way flights.
Typically, when airlines such as Southwest and JetBlue increase fares, the major legacy carriers follow. Delta Air Lines, US Airways, American Airlines and Frontier Airlines matched within hours. United Airlines did as well, according to Rick Seaney, chief executive officer of FareCompare.com, which closely monitors fare increases.


