Schedule: a typical Monday (the flights of Jul 27, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
AMERICAN · FLIGHT AA 1638SCHEDULED · TYPICAL ODDS
AA 1638 · PHX → DEN
departs 3:24 PM MT · arrives 6:16 PM MT
Forecast issued Thu 12:00 PM ET · 102h before departure
Typical odds
Too early for a weather forecast — these are typical odds for this flight on a Monday in October, from the weather this date has had in past years (the range shows how much they varied). They’ll switch to forecast-based odds about 3 days before departure.
Odds over time
Arrive at DEN more than 15 minutes late?
34%chance · ±7 pts+0 pts · 24h
HOW SURE WE ARELow. This is mostly a starting point from history; weather forecasts haven't kicked in yet.
How late will it get to DEN?
On time or early
65%
15–30 min late
12%
30 min–1 hour late
12%
1–2 hours late
6%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.