No clear winner: Southwest’s BWI → ISP flights land within a few points of 4 in 5 on time whatever the hour.
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 4816 | BWI 07:10 | ISP 08:20 | 1h 10m | 41 | 98% | 2.4% | 16 min |
| WN 4691 | BWI 10:40 | ISP 11:50 | 1h 10m | 49 | 92% | 0.0% | 43 min |
| WN 937 | BWI 12:35 | ISP 13:45 | 1h 10m | 16 | 88% | 0.0% | 22 min |
| WN 966 | BWI 13:20 | ISP 14:30 | 1h 10m | 26 | 77% | 0.0% | 76 min |
| WN 4126 | BWI 16:05 | ISP 17:15 | 1h 10m | 57 | 65% | 3.5% | 65 min |
| WN 4321 | BWI 22:25 | ISP 23:35 | 1h 15m | 57 | 57% | 5.3% | 70 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 | BWI | ISP | 1h 10m | 79% | 1.9% | 1,236 | 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