Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
WN 4259 · Denver (DEN) → Long Beach (LGB)
Sold by Southwest. Still flying: 55 of the last 56 days (Daily).
Arrives on time51%within 15 minutes, of 57 flights
Cancelled0.0%of scheduled flights
An hour or more late7%of flights that operated
When late, on average42 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Long Beach is 1 h behind Denver).
- Leaves DEN
- 14:05
- Arrives LGB
- 15:35
- Flight time
- 2h 25m
- Days flown, last 8 weeks
- 55 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 DEN
All flights leaving Denver (DEN) at 2–3 pm, wherever they’re going: 71% left within 15 minutes and 1.2% were cancelled (11,927 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.