Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s almost half.
Time of day × airport
Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).
Pick an hour to see this route’s flights leaving then.
Flights, best and worst
Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
No Southwest flight on this route ran 150+ times in the year.
All 6 Southwest flights in the current schedule
Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
| WN 3626 | SEA 06:45 | SJC 08:55 | 2h 10m | 33 | 94% | 0.0% | 64 min |
| WN 3232 | SEA 07:30 | SJC 09:45 | 2h 15m | 16 | 81% | 0.0% | 35 min |
| WN 4960 | SEA 13:30 | SJC 15:55 | 2h 25m | 26 | 35% | 0.0% | 39 min |
| WN 4130 | SEA 15:25 | SJC 17:35 | 2h 10m | 16 | 6% | 0.0% | 56 min |
| WN 635 | SEA 18:55 | SJC 21:08 | 2h 12m | 16 | 44% | 0.0% | 63 min |
| WN 2040 | SEA 20:10 | SJC 22:28 | 2h 18m | 26 | 35% | 0.0% | 52 min |
Nonstops by airline and airport
Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
| Southwest | SEA | SJC | 2h 15m | 73% | 0.2% | 905 | Flying now |
About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON