ATL to MDT flight delays & on-time performance
Nonstop flights from Hartsfield Jackson Atlanta International Airport to Harrisburg International Airport · 620 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ATL or MDT 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 Harrisburg (MDT) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 2.2% were cancelled, and 6% arrived an hour or more late.
- Delta Air Lines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 9am did best (88% on time); around 4pm did worst (71%).
- Wednesday was the most reliable day to fly (89% on time) and Monday the least (76%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (38%).
Which airline is most on time from ATL to MDT?
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 |
|---|---|---|---|---|---|
| Delta Air Lines | 81% | 2.2% | 12 min | 5.7% | 1,002 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am88%17 flights
- 9am88%248 flights
- 10am85%42 flights
- 11am81%34 flights
- 12pm71%21 flights
- 3pm80%256 flights
- 4pm71%35 flights
- 8pm93%14 flights
- 9pm77%311 flights
- 10pm87%24 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday76%1.3% cancelled
- Tuesday84%0.0% cancelled
- Wednesday89%0.0% cancelled
- Thursday80%0.7% cancelled
- Friday77%1.3% cancelled
- Saturday82%6.8% cancelled
- Sunday81%6.8% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)38%
- Late-arriving aircraft33%
- Air traffic control & airport congestion23%
- Extreme weather6%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)73%
- Extreme weather27%
- Air traffic control & airport congestion0%
- Security0%
ATL to MDT: common questions
- How often are ATL to MDT flights on time?
- 81% 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 Harrisburg cancelled?
- 2.2% of scheduled flights were cancelled (22 of 1,002).
- How long are typical delays?
- Across all flights the average arrival delay was 12 min (early arrivals count as zero). Flights that were late arrived 61 min behind schedule on average, and 5.7% of flights were an hour or more late.
- How long is taxi time at ATL?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MDT to ATL — 86% on time
More flights from Atlanta
More flights to Harrisburg
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ATL → MDT, nonstop flights by US airlines that report to the DOT. How we calculate this.