How often is your flight actually late?

On-time rates, delay causes, and the safest departure window across the 30 busiest US airports — grounded in the federal on-time record, not marketing claims. No login required.

From

Covers the 30 busiest US airports, March–September 2026.

Flight number: Type UA654 for one flight's recent record.
Route: Pick two of the 30 covered airports to rank every departure hour.
On time means: Arriving within 15 minutes of schedule — the FAA's definition.