| SLEEPER | Passengers on overnight train and under the rails! (7) |
| ENGINES | Defective in genes, but they stay on the rails! (7) |
| SLEEPERCELLS | Undercover operatives in small rooms on overnight trains? (7,5) |
| SLEEPERS | Dormant spies to be found under the rails (8) |
| SLEEPMASK | Freebie on overnight flights |
| ILLEGAL | Under the counter and under the weather before gale broke (7) |
| REBECCA | Whose television appearances include The Flying Doctors, Packed to the Rafters and Under the Vines? (7,6) |
| ACCLAIM | Clap one inside shellfish and under the current (7) |
| OFSORTS | Inferior and under the weather, dropping out (2,5) |
| STEWARD | A person employed to look after the passengers on an aircraft, ship or train (7) |
| THECULT | English rock band whose albums include Sonic Temple (1989) and Under the Midnight Sun (2022) (3,4) |
| HOWDAHS | Seating area for passengers on elephants, usually with a canopy (7) |
| INTRAIN | Being dealt with (going by rail!) (2,5) |
| VOYAGER | Passenger on a space probe (7) |
| SHATNER | Celebrity passenger on Bezos's New Shepard rocket |
| GREENAWAY | Illustrator of "toy books", including Marigold Garden, Mother Goose and Under the Window, who was the daughter of an engraver and a milliner, and a friend of John Ruskin (9) |
| GIBNEY | Whose television appearances include The Flying Doctors, Packed to the Rafters and Under the Vines? (7,6) |
| DRINKDRIVING | Being behind the wheel and under the influence (5-7) |
| RAILS | They may go up the steps and under the train |
| IRISMURDOCH | Author of "The Sea, the Sea" and "Under the Net" |
