I have had great luck with Southwest............for our upcoming trip I originally booked our return flight for $99 and then sometime in September I checked the Ding that came up and saw Orlando to Manchester listed, but it did not specify a Friday night but thought......."I'll check it anyway". Lo and behold I was able to rebook for $34 and got the credit........since the flight has already been paid I feel like I have banked my money for future flight!!!! I am thrilled.........our round trip price in under $100 even with all of the fees/taxes!!