A reservation, as for a seat on an airplane, for which confirmation is granted electronically in lieu of a printed ticket. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "e-ticket" in a sentence
"My current “confirmed e-ticket” shows me taking off from Heathrow at 9: 55 and landing in Hartford at 15: 40."
"Paper Proof of Travel : Make sure you take an itinerary or e-ticket printout to the airport."
"However, the following morning a booking "confirmation" email/e-ticket arrived for the flights easyJet had refused to sell me."