The 'All the Small Things' band's drummer had have an urgent medical procedure on his tonsils, forcing them to cancel all further shows in their current US tour, which runs until the end of the month.
A statement on the band's website reads: ''The band apologises for any inconvenience as a result of these cancellations and thanks their fans for their ongoing support.''
The note added Travis' ''recovery period is expected to extend beyond the scheduled tour dates.''
Disappointed fans rushed to express their disappointment, with matt2010boogey writing: ''Is there anyway i can get a tour shirt for me and my girlfriend since the Rochester show is canceled ='( i haven't missed a blink concert in NY my whole life. I am so sad (sic).''
It is not yet known if the band's later dates in the UK and Europe, starting in June, will be affected by Travis' condition.
The group - which also includes Mark Hoppus and Tom DeLonge - have already had to reschedule their tour once, after it was originally supposed to start in July last year, but dates were pushed back in order to allow the group to finish sixth album 'Neighborhoods'.