How much would it cost to move a plane ticket back by a week?

Is there any way to check how much it would cost to move a plane ticket scheduled to go from Tf green airport, RI to Detroit on July 8th ....to July 15th instead? Flying Northwest and the one traveling would be an unaccompanied minor (11 yrs old) It was round trip... he came from Michigan on the 18th of June and was supposed to stay 3 weeks but wants to stay longer. Any help is great thanks!How much would it cost to move a plane ticket back by a week?The restrictions on changing the return leg of a trip

are much less than on the originating flight.



It might not cost anything, but these days the airlines don't give much of anything away.



The only way to find out for sure is to contact the airline.How much would it cost to move a plane ticket back by a week?
check with the airline directly, you can call them at their 800 number to find out the ball-park figure of how much it would cost. usually for changes, you'll be charged a change fee plus any fare difference. i must warn you, changing tickets wherein the flight date is very near might be costly.How much would it cost to move a plane ticket back by a week?Every airline is different....he is looking at paying between $50-300....find a flight that has seats available and then call the airlineHow much would it cost to move a plane ticket back by a week?
You should probably just call and ask them, they would know the exact cost.How much would it cost to move a plane ticket back by a week?i did mine for free