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.
Airlines on this route
Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
| Southwest | 1,236 | 79% | 1.9% | 51 min |
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 flight on this route ran 150+ times in the year.
All 6 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