PWM to ATL flight delays & on-time performance
Nonstop flights from Portland International Jetport to Hartsfield Jackson Atlanta International Airport · 1,027 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PWM or ATL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Portland (PWM) to Atlanta (ATL) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.1% 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 5am did best (89% on time); around 2pm did worst (56%).
- Wednesday was the most reliable day to fly (89% on time) and Monday the least (75%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (62%).
Which airline is most on time from PWM to ATL?
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% | 1.1% | 18 min | 6.0% | 642 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am89%138 flights
- 6am88%227 flights
- 1pm78%169 flights
- 2pm56%40 flights
- 6pm67%61 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday75%2.2% cancelled
- Tuesday81%0.0% cancelled
- Wednesday89%0.0% cancelled
- Thursday82%0.0% cancelled
- Friday87%2.2% cancelled
- Saturday80%1.0% cancelled
- Sunday77%2.2% 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)62%
- Air traffic control & airport congestion24%
- Late-arriving aircraft13%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)57%
- Extreme weather43%
- Air traffic control & airport congestion0%
- Security0%
PWM to ATL: common questions
- How often are PWM to ATL 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 Portland to Atlanta cancelled?
- 1.1% of scheduled flights were cancelled (7 of 642).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 90 min behind schedule on average, and 6.0% of flights were an hour or more late.
- How long is taxi time at PWM?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ATL to PWM — 75% on time
More flights from Portland
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PWM → ATL, nonstop flights by US airlines that report to the DOT. How we calculate this.