| Start of the Greek spelling of Hera | 35 |
| Spirit infomation: Abbr. | 24 |
| Sorority sweater letter | 23 |
| Sorority letter, perhaps | 24 |
| Sked posting | 12 |
| Sked approximation | 18 |
| Shortest-named Greek vowel | 26 |
| SFO guess | 9 |
| Seventh letter, to Plato | 24 |
| Seventh in a series of 24 | 25 |
| Seventh in a series for Sophocles | 33 |
| Seventh in a series | 19 |
| Seventh chapter of a fraternity | 31 |
| Seventh chapter | 15 |
| Secret-society letter | 21 |
| Sea-Tac datum | 13 |
| Schiphol info: Abbr. | 20 |
| Schedule stat. | 14 |
| Schedule guess: Abbr. | 21 |
| Sched. number | 13 |
| Sched. letters | 14 |
| SAS listing: Abbr. | 18 |
| SAS guess | 9 |
| SAS announcement | 16 |
| Rough flight abbr.? | 19 |
| Relative of alpha | 17 |
| Pt. of a flight plan | 20 |
| Projection in the air, for short | 32 |
| Precedes theta | 14 |
| Posting at SFO or LAX | 21 |
| Posting at O'Hare: Abbr. | 28 |
| Platonic letter | 15 |
| Plato's seventh letter | 26 |
| Plane's landing stat | 24 |
| Plane landing stat. | 19 |
| Pindaric character | 18 |
| Pilot's update | 18 |
| Pilot's prediction: Abbr. | 29 |
| Pilot's prediction, in brief | 32 |
| Pilot's prediction | 22 |
| Pilot's info, briefly | 25 |
| Pilot's in-flight announcement, for short | 45 |
| Pilot's guesstimate, for short | 34 |
| Pilot's guesstimate (abbr.) | 31 |
| Pilot's guess, for short | 28 |
| Pilot's datum: Abbr. | 24 |
| Pilot's concern, abbr. | 26 |
| Pilot's approximation, for short | 36 |
| Pilot's approx. | 19 |
| Pilot announcement: Abbr. | 25 |
| Picker-upper's concern: Abbr. | 33 |
| Pericles' 'H' | 25 |
| Penultimate letter in the first third of the Greek alphabet | 59 |
| Passengers' datum, briefly | 30 |
| Passenger's info, maybe | 27 |
| Passenger's concern, in brief | 33 |
| Part of the alphabet in Athens | 30 |
| Part of an Athenian's alphabet | 34 |
| Part of a U.S.A.F. schedule | 27 |
| Part of a pilot's plan: Abbr. | 33 |
| Part of a pilot's announcement, sometimes | 45 |
| Part of a pilot's announcement, briefly | 43 |
| Pariah, Japanese style | 22 |
| Osaka outcast | 13 |
| ORD announcement | 16 |
| On-time stat, perhaps | 21 |
| Obstetrician's guess?: Abbr. | 32 |
| O'Hare posting: Abbr. | 25 |
| O'Hare monitor abbr. | 24 |
| O'Hare info | 15 |
| O'Hare announcement | 23 |
| No. on an e-ticket | 18 |
| No. in a pilot's announcement | 33 |
| Navigator's guess: Abbr. | 28 |
| Nav system calculation | 22 |
| n look-alike | 12 |
| Midway guess | 12 |
| Midway fig. | 11 |
| Member of a rhyming Greek group | 31 |
| Lowercase letter that looks similar to an eng | 45 |
| Logan approximation | 19 |
| Logan Airport abbr. | 19 |
| Listing that can change based on the weather, for short | 55 |
| LGA guesstimate | 15 |
| LGA datum | 9 |
| Letters on an airport sign | 26 |
| Letters at Logan | 16 |
| Letter two before iota | 22 |
| Letter that rhymes with its preceding and following letter | 58 |
| Letter than rhymes with the ones just before and after it | 57 |
| Letter resembling H | 19 |
| Letter often written by Rhodes scholars? | 40 |
| Letter of a chapter? | 20 |
| Letter in Larisa | 16 |
| Letter in a fraternity name | 27 |
| Letter halfway between alpha and nu | 35 |
| Letter from Thessaly | 20 |
| Letter from overseas | 20 |
| Letter from Lesbos | 18 |
| Letter from Homer? | 18 |