Related Clues:

• Frat letter, perhaps
• Schedule guesses briefly,
• Some Greek vowels
• Hellenic H
• Airport guess: Abbr.
• H, to Greeks
•     Traveler's request: Abbr.
• JFK posting
• Terminal abbr.
• O'Hare abbr.
• Passengers' concerns, briefly
• H H H, to Greeks
• Sched. guess
• Airline Web site stat.
• LAX guesstimates