How much does it cost to change a flight?

If I went on vacation to mexico and wanted to leave early (a week early) how much would it cost to change my flight?How much does it cost to change a flight?The average is about 100 bucks....may be more may be less call the airlines.......How much does it cost to change a flight?It depends on the airline- because they are hurting for travellers they have started to charge for more things and also have increased prices with these extras-- best check with the airlineHow much does it cost to change a flight?ask the airlines.. but it shouldnt be much at all. i change my flights all the time!How much does it cost to change a flight?get in touch with airline