Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
WN 4873 · San Diego (SAN) → Boise (BOI)
Sold by Southwest. Still flying: 32 of the last 56 days (Mon–Fri).
Arrives on time76%within 15 minutes, of 34 flights
Cancelled0.0%of scheduled flights
An hour or more late6%of flights that operated
When late, on average40 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Boise is 1 h ahead of San Diego).
- Leaves SAN
- 08:48
- Arrives BOI
- 11:58
- Flight time
- 2h 10m
- Days flown, last 8 weeks
- 32 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 SAN
All flights leaving San Diego (SAN) at 8–9 am, wherever they’re going: 86% left within 15 minutes and 0.9% were cancelled (8,929 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.