Route profile
AUS→PHL
Flight reliability, delays and best times to fly from Austin to Philadelphia, 1,430 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 14% of comparable major US routes (4,598 compared)
Calculated from 3,224 flights. How this is calculated
AUS → PHL arrives on time 75.8% of the time; the return trip, PHL → AUS, arrives on time 76.4% of the time.
AUS → PHL spends 25.0 minutes on the ground on a 1,430-mile trip: 16.2 minutes from pushback to wheels-up at AUS and 8.8 minutes from touchdown to gate at PHL.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
This route's worst arrivals run unusually far past its typical one, a bigger gap than 97% of 4,598 comparable routes.
A typical arrival is 6 min early, but the worst tenth run 80 minutes worse than that.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 4,598 in the comparison.
What sets this route apart
Where AUS to PHL differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
AUS to PHL struggles most at 1 PM: 67.7% of its flights scheduled then arrive on time, 8.2 points behind the 75.9% on routes of similar length at the same hour. Against all other routes the gap is 9.4 points.
Sunday is the day AUS to PHL slips furthest against routes of similar length, 70.5% on time where they average 75.4%, 4.9 points lower. Against all other routes the gap is 4.3 points.
In October, AUS to PHL runs 6.7 points below routes of similar length, 76.3% on time to 83.0%. Against all other routes the gap is 6.7 points.
AUS to PHL against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 1 PM departures | 67.7% | routes of similar length | 75.9% | −8.2 pts | 557 here, 91,959 there |
| Weekday: Sunday | 70.5% | routes of similar length | 75.4% | −4.9 pts | 492 here, 231,738 there |
| Month: October | 76.3% | routes of similar length | 83.0% | −6.7 pts | 295 here, 132,911 there |
Each comparison pools the flights of other routes, with this route’s own left out. Similar length means within 15% of this route’s 1,430 miles, with at least 5 such routes. A bucket is set against the most comparable group that has enough flights: similar length, then the same origin (at least 3 routes), then all other routes. Hours, weekdays and months appear only where both sides have 120 completed flights, and airlines where both have 600. The gap must be at least 2 points and 2 standard errors, and only the largest gap each way is kept per measure. These are differences in the flights counted, not causes.
Why AUS → PHL flights are cancelled
July 2023 – July 2026
AUS → PHL cancelled 58 of 3,224 scheduled flights — about 1 in every 56. The reason filed most often was extreme weather, 75.9% of the cancellations coded on this route — about 1 in every 73 scheduled flights.
Share of cancellations
Of 58 cancelled departures carrying a reason code.
What each reason means
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
44 cancellations, 75.9% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
13 cancellations, 22.4% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
1 cancellation, 1.7% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. With only one or two carriers on the route, the split mostly reflects how they file. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
58 coded cancellations were recorded on AUS → PHL; the section appears from 50.
When it goes wrong
July 2023 – July 2026
74 min late
against a median of 6 min early
AUS → PHL has an average that understates its risk: a typical arrival is 6 min early, but the worst tenth are 80 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 3,224 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at PHL after arriving from AUS.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 39% | Likely to miss |
| 45 min | 24% | High risk |
| 60 min | 17% | High risk |
| 90 min | 11% | Some risk |
| 120 min | 8.3% | Some risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 1.80% of the time and diverts 0.22% of the time, which a late arrival never shows up in.
Chance of missing is the share of 3,159 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 74 minutes late (90th-percentile gate arrival delay), over 3,224 operations.
Any other layover length: connection checker.
Best time to fly
AUS → PHL flights departing 5–9 AM arrived on time 86.4% of the time, against 69.3% for 3–6 PM departures, a gap of 17.1 percentage points.
By departure window
By departure hour
- 12 AM to 5 AM: too few flights to score
- 6 AM: 87.1% on time from 287 flights
- 7 AM: 85.9% on time from 409 flights
- 8 AM: 86.3% on time from 351 flights
- 9 AM: too few flights to score
- 10 AM: 81.4% on time from 120 flights
- 11 AM: too few flights to score
- 12 PM: 71.6% on time from 477 flights
- 1 PM: 67.7% on time from 568 flights
- 2 PM: 69.3% on time from 356 flights
- 3 PM: 68.4% on time from 321 flights
- 4 PM to 11 PM: too few flights to score
Departure windows with fewer than 120 flights are not scored.
Why AUS → PHL runs late
July 2023 – July 2026
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for AUS → PHL. Only delays of 15 minutes or more are attributed.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| American Airlines | 3,044 | 75.4% | 1.84% | -6 min | 11.7% |
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
| Flight | Scheduled | Operations | On time |
|---|---|---|---|
| AA2774 American Airlines | 7:00 AM | 1,082 | 86.2% |
Weekly and seasonal patterns
By day of week
Saturday is historically the most reliable day and Sunday the least, a gap of 10.9 percentage points.
By month
- Jan: 77.2%
- Feb: 85.0%
- Mar: 78.7%
- Apr: 79.5%
- May: 74.6%
- Jun: 69.7%
- Jul: 70.6%
- Aug: 72.0%
- Sep: 76.7%
- Oct: 76.3%
- Nov: 79.2%
- Dec: 76.1%
June is historically the weakest month and February the strongest, a spread of 15.3 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: too few flights to score (62)
- August 2023: too few flights to score (80)
- September 2023: too few flights to score (91)
- October 2023: too few flights to score (90)
- November 2023: too few flights to score (81)
- December 2023: too few flights to score (82)
- January 2024: too few flights to score (77)
- February 2024: too few flights to score (75)
- March 2024: too few flights to score (86)
- April 2024: too few flights to score (86)
- May 2024: too few flights to score (88)
- June 2024: too few flights to score (88)
- July 2024: too few flights to score (91)
- August 2024: too few flights to score (80)
- September 2024: too few flights to score (76)
- October 2024: too few flights to score (84)
- November 2024: too few flights to score (77)
- December 2024: too few flights to score (76)
- January 2025: too few flights to score (57)
- February 2025: too few flights to score (52)
- March 2025: too few flights to score (57)
- April 2025: too few flights to score (80)
- May 2025: too few flights to score (95)
- June 2025: 61.0% from 121 flights
- July 2025: 66.7% from 126 flights
- August 2025: too few flights to score (117)
- September 2025: too few flights to score (113)
- October 2025: 72.1% from 122 flights
- November 2025: 71.1% from 121 flights
- December 2025: too few flights to score (87)
- January 2026: too few flights to score (62)
- February 2026: too few flights to score (68)
- March 2026: too few flights to score (89)
- April 2026: too few flights to score (77)
- May 2026: too few flights to score (107)
- June 2026: too few flights to score (113)
- July 2026: too few flights to score (90)
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 76.3% against 73.1% in the 12 months before — improving by 3.2 percentage points.
Data and methodology
Calculated by FlyerIntel from 3,224 AUS → PHL flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed