Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
WN 204 · Atlanta (ATL) → Denver (DEN)
Sold by Southwest. Not in the Jun 6 – Jul 31, 2026 schedule; last flew 2026-03-04.
Arrives on time89%within 15 minutes, of 56 flights
Cancelled5.4%of scheduled flights
An hour or more late4%of flights that operated
When late, on average52 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Denver is 2 h behind Atlanta).
- Leaves ATL
- 11:00
- Arrives DEN
- 12:30
- Flight time
- 3h 30m
- Days flown, last 8 weeks
- 0 of 56
Each square is a day, Sat Jun 6 to Fri Jul 31, two weeks per row (each column is the same weekday); filled = flew.
How late it arrives
Share of flights that operated arriving more than this late.
Horizontal: minutes late at arrival (0 to 3 hours). Vertical: share of flights later than that.
Its hour at ATL
All flights leaving Atlanta (ATL) at 11 am–12 pm, wherever they’re going: 84% left within 15 minutes and 1.6% were cancelled (23,399 flights in the year). Other Southwest flights on this route →
Upcoming forecasts
Our odds that this flight is late or cancelled on the days we publish.