Answer:

ETA

AnswerCrossword Clue
ETAGreek letter
ETAGreek vowel
ETAJFK abbr
ETAJFK abbr.
ETALAX guesstimate
ETALAX info
ETALAX posting
ETALGA guesstimate
ETALogan abbr.
ETAO'Hare abbr.
ETASked guess
ETAAirline's best guess (Abbr)
ETAFraternity character
ETAGreek H
ETAH, as in "Hellenic"
ETAIn-flight announcement, for short
ETAJFK guesstimate
ETAORD info
ETASked abbreviation
ETASweater letter
ETATEA in Greek letters?
ETAAirline terminal acronym
ETAApproximation at LAX
ETABest guess?
ETAGreek "H"
ETAI of Livy
ETAIn-flight guesstimate
ETAJFK info.
ETATraveler's info, for short
ETAComing time: Abbr.
ETA"What's your ...?" ("When can I expect you?")
ETAConcern for someone picking you up at the airport: Abbr.
ETAGreek letter preceded and followed by letters it rhymes with
ETAAirline stat.
ETAFrat letter
ETAHellenic H
ETALAX stat
ETAAirport abbr.
ETALAX listing
ETAH look-alike