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How late can I book a domestic flight?
How late you can book a domestic flight — cutoffs, availability, and practical limits.
Quick answer
Technically you can book until the airline's cutoff, often close to departure; practically, availability thins and prices vary more as departure approaches. Most airlines stop selling seats online a few hours before takeoff, and check-in deadlines add their own cutoffs.
Exceptions and cutoffs
- Airport-ticketing cutoffs differ from online cutoffs by airline
- Checked-bag drop deadlines are earlier than boarding
- Some discounted fares disappear entirely in the final day
Related topics: flight booking assistance · domestic flights