Glastonbury Festival 2011 organisers may hold, "an extremely limited resale of tickets" depending upon the number of refunds requested, they say.
The event will return from 22-26 June at Worthy Farm in Pilton, Somerset.
The news comes as the deadline for ticket refunds approaches, with festival-goers given until 11:59 PM on Friday 6 May to ask for their money back.
To be able to buy tickets if a resale occurs, users must register on the official site before midnight on Friday.
Festival-goers can request a refund by calling Seetickets on 0844 412 4626.
The Glastonbury 2011 line-up will feature headline performances from Coldplay, U2 and Beyonce as well as many more.
Tickets for Glastonbury Festival 2011 have now sold out.
For those with tickets, National Express are still selling coach travel packages to the event.
Click here to buy National Express coach tickets.
More and more festival-goers are travelling by coach to events because of its green credentials.
It saves money on car parking and the coach drops ticket-holders closer to the campsite than any other mode of transport.
National Express is the official coach partner of the Glastonbury Festival 2011.
This year, Glastonbury organisers are offering an extra incentive to ‘Green Travellers’ other than the cleaner air and clear conscience.
Green Travellers will be rewarded for their heroics with a lanyard entitling them to discount meal vouchers, solar showers, cut-price merchandise and access to compost toilets.
Read our live blog on the Glastonbury Festival ticket resale.
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