Philadelphia (PHL) to Austin (AUS): On-Time Performance
Data through May 2026
When you fly PHL to AUS matters as much as anything else about the booking: the route swung from 94% on-time in November 2024 to just 56% in July 2024. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (83% vs 66%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 1.9%
- Flights/day
- 3.3
- last 12 months
- Duration
- 3h 58m
- scheduled
- Distance
- 1,431 mi
Best airline from PHL to AUS
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 77% | 21 min | 1.9% | 2,047 |
| Frontier Airlines | 75% | 21 min | 2.9% | 69 |
Monthly on-time trend
Best time to fly from PHL to AUS
Aim for departures around 7 a.m. (89% on-time); avoid 8 p.m. departures (56%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 23 min |
| Tuesday | 81% | 16 min |
| Wednesday | 78% | 17 min |
| Thursday | 75% | 20 min |
| Friday | 80% | 24 min |
| Saturdaybest | 82% | 15 min |
| Sunday | 69% | 26 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft44%
- Airline operations36%
- National airspace system17%
- Weather3%
Frequently asked questions
- How often are flights from PHL to AUS delayed?
- 24% of PHL–AUS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 21 minutes.
- Which airline is most reliable from PHL to AUS?
- American Airlines has the best on-time record on this route at 77%, based on 2,047 flights. 2 airlines flew PHL–AUS frequently enough to compare in this period.
- What is the best time of day to fly from PHL to AUS?
- Departures around 7 a.m. have the best record (89% on-time), while departures around 8 p.m. have the worst (56%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PHL to AUS?
- The scheduled PHL–AUS flight time averages 3h 58m over 1,431 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are PHL to AUS flights cancelled?
- 1.9% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from PHL to AUS?
- July 2024 was the roughest month in this dataset, with only 56% of arrivals on time. The best was November 2024 at 94%. If your dates are flexible, that 37-point gap is worth planning around.
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Based on 2,124 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.