With 7-Across, flight option that saves money at the expense of sleep NYT crossword clue

The clue “With 7-Across, flight option that saves money at the expense of sleep” points to a common term used for overnight flights that are often cheaper but can be tiring due to their late departure and early arrival. This phrase is split between two entries in the puzzle, with this particular clue referring to the first part. When combined with 7-Across, it completes a term frequently used in air travel.

The answer is **RED**. Paired with 7-Across, which is likely **EYE**, the full term becomes **REDEYE** — a type of flight that leaves at night and arrives the next morning. These flights are named for the red eyes passengers often have from lack of sleep and are a popular budget option despite the physical toll.