ATL to PHL flight delays & on-time performance
Nonstop flights from Hartsfield Jackson Atlanta International Airport to Philadelphia International Airport · 666 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ATL or PHL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Atlanta (ATL) to Philadelphia (PHL) arrived on time 75% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 3.2% were cancelled, and 9% arrived an hour or more late.
- PSA Airlines was the most punctual airline here (81% on time); Frontier Airlines was the least (62%).
- Departures scheduled around 6am did best (94% on time); around 5pm did worst (61%).
- Wednesday was the most reliable day to fly (80% on time) and Sunday the least (69%).
- The largest source of delay minutes was late-arriving aircraft (44%).
Which airline is most on time from ATL to PHL?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 91% | 2.5% | 11 min | 6.9% | 119 |
| PSA AirlinesRegional airline operating American Eagle flights. | 81% | 4.9% | 19 min | 8.4% | 859 |
| American Airlines | 80% | 2.5% | 26 min | 10.2% | 635 |
| Spirit Airlines | 79% | 1.4% | 13 min | 7.0% | 72 |
| Delta Air Lines | 76% | 3.0% | 14 min | 6.3% | 3,016 |
| Frontier Airlines | 62% | 3.0% | 34 min | 17.6% | 1,048 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am71%77 flights
- 6am94%316 flights
- 7am88%522 flights
- 8am85%210 flights
- 9am81%443 flights
- 10am76%229 flights
- 11am84%456 flights
- 12pm83%246 flights
- 1pm81%315 flights
- 2pm75%336 flights
- 3pm64%575 flights
- 4pm63%328 flights
- 5pm61%181 flights
- 6pm68%442 flights
- 7pm60%159 flights
- 8pm71%295 flights
- 10pm65%533 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday70%4.0% cancelled
- Tuesday79%3.0% cancelled
- Wednesday80%0.9% cancelled
- Thursday73%1.3% cancelled
- Friday78%2.9% cancelled
- Saturday78%3.3% cancelled
- Sunday69%6.9% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft44%
- Airline (crew, maintenance, cleaning, fueling)35%
- Air traffic control & airport congestion18%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather52%
- Airline (crew, maintenance, cleaning, fueling)42%
- Air traffic control & airport congestion5%
- Security0%
ATL to PHL: common questions
- How often are ATL to PHL flights on time?
- 75% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Atlanta to Philadelphia cancelled?
- 3.2% of scheduled flights were cancelled (184 of 5,749).
- How long are typical delays?
- Across all flights the average arrival delay was 20 min (early arrivals count as zero). Flights that were late arrived 75 min behind schedule on average, and 9.1% of flights were an hour or more late.
- How long is taxi time at ATL?
- Flights on this route spent 19 min taxiing from the gate to takeoff on average.
Related routes
Return trip: PHL to ATL — 79% on time
More flights from Atlanta
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ATL → PHL, nonstop flights by US airlines that report to the DOT. How we calculate this.