Austin (AUS) to Philadelphia (PHL): On-Time Performance
Data through July 2026
When you fly AUS to PHL matters as much as anything else about the booking: the route swung from 88% on-time in November 2024 to just 59% in August 2024. Across the full period the route averages 74% on-time against a national 78%.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 42 min
- completed flights
- Cancelled
- 2.1%
- Flights/day
- 3.2
- last 12 months
- Duration
- 3h 30m
- scheduled
- Distance
- 1,431 mi
Best airline from AUS to PHL
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 75% | 42 min | 2.1% | 2,162 |
| Frontier Airlines | 68% | 24 min | 2.9% | 68 |
Monthly on-time trend
Best time to fly from AUS to PHL
Aim for departures around 6 a.m. (87% on-time); avoid 2 p.m. departures (65%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 72% | 43 min |
| Tuesday | 78% | 59 min |
| Wednesday | 78% | 32 min |
| Thursday | 72% | 33 min |
| Friday | 76% | 49 min |
| Saturdaybest | 80% | 23 min |
| Sunday | 68% | 47 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft38%
- Airline operations51%
- National airspace system7%
- Weather5%
Frequently asked questions
- How often are flights from AUS to PHL delayed?
- 26% of AUS–PHL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 42 minutes.
- Which airline is most reliable from AUS to PHL?
- American Airlines has the best on-time record on this route at 75%, based on 2,162 flights. 2 airlines flew AUS–PHL frequently enough to compare in this period.
- What is the best time of day to fly from AUS to PHL?
- Departures around 6 a.m. have the best record (87% on-time), while departures around 2 p.m. have the worst (65%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from AUS to PHL?
- The scheduled AUS–PHL flight time averages 3h 30m over 1,431 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are AUS to PHL flights cancelled?
- 2.1% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from AUS to PHL?
- August 2024 was the roughest month in this dataset, with only 59% of arrivals on time. The best was November 2024 at 88%. If your dates are flexible, that 29-point gap is worth planning around.
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Based on 2,238 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.