Related Clues:

• Airport abbreviation
• J.F.K. posting, for short
• Third letter after delta
• Socrates' H
• Seventh letter
• Athenian vowel
• Plato's H
• Second letter before iota
• Airport schedule abbr.
• Alphabetic character
• Frat letter, perhaps
• Hellenic H
• Airport guess: Abbr.
• H, to Greeks
•     Traveler's request: Abbr.