Showing Frontier only (incl. its regional partners)All airlines ×
75 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines
No clear winner: Frontier’s SJU → IAD flights land within a few points of 64% on time whatever the hour.
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 Frontier flight on this route ran 150+ times in the year.
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.
| Frontier | SJU | IAD | 4h 08m | 64% | 1.3% | 75 | Not flying now |
Alternatives with one stop
All connections →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