Route · PWM → ATL · 2020–2025 BTS data
Portland to Atlanta
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), PWM to ATL (Portland to Atlanta) ranks #3437 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 79.8%
- On-time
- +0.8 pts
- vs US avg
- 87 min
- Delay when late
- 2,714
- Flights
- #3437 of 4927
- Corpus placement
Cancelled
1.2%
Best Month
Oct 2025 92%
Worst Month
Jun 2025 63%
Distance
1,027 mi
Carriers
2
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 32 | 11 | 0 | 0 | DL |
| Nov 2025 | 59 | 12 | 1 | 0 | DL |
| Oct 2025 | 61 | 5 | 0 | 0 | DL |
| Sep 2025 | 61 | 6 | 0 | 0 | DL |
| Aug 2025 | 75 | 13 | 1 | 0 | DL |
| Jul 2025 | 92 | 33 | 2 | 0 | DL |
| Jun 2025 | 83 | 31 | 2 | 1 | DL |
| May 2025 | 54 | 15 | 0 | 1 | DL |
| Apr 2025 | 32 | 3 | 0 | 0 | DL |
| Mar 2025 | 31 | 2 | 0 | 0 | DL |
| Jan 2025 | 31 | 4 | 1 | 0 | DL |
| Dec 2024 | 32 | 5 | 0 | 0 | DL |
| Nov 2024 | 30 | 2 | 0 | 0 | DL |
| Oct 2024 | 56 | 6 | 0 | 0 | DL |
| Sep 2024 | 60 | 8 | 0 | 0 | DL |
| Aug 2024 | 62 | 11 | 0 | 0 | DL |
| Jul 2024 | 62 | 17 | 5 | 1 | DL |
| Jun 2024 | 54 | 10 | 0 | 0 | DL |
| May 2024 | 31 | 4 | 0 | 0 | DL |
| Apr 2024 | 30 | 2 | 1 | 0 | DL |
| Mar 2024 | 31 | 3 | 0 | 0 | DL |
| Jan 2024 | 31 | 4 | 1 | 0 | DL |
| Dec 2023 | 31 | 6 | 0 | 0 | DL |
| Nov 2023 | 34 | 7 | 0 | 0 | DL |
PWM–ATL seasonal on-time pattern
Best: April (90.1%) · weakest: July (70.0%)
Strongest calendar month
April
90.1% on-time · ~30 flights/mo
Busiest calendar month
July
~64 flights/mo avg
Weakest calendar month
July
70.0% on-time · ~64 flights/mo
Cancellation Rate
1.2%
14 of 1,155 flights
Diversion Rate
0.3%
3 of 1,155 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
PWM - Portland
Full on-time, delay-cause, and seasonal performance for Portland, ME.
PWM on-time profileATL - Atlanta
Full on-time, delay-cause, and seasonal performance for Atlanta, GA.
ATL on-time profileCompare the two airports
See PWM and ATL side by side on delays, cancellations, and reliability.
Compare PWM vs ATLOrigin-hub reliability standing
Mid-pack among PWM departures
From PWM, this corridor sits with 9 other 75–85% on-time routes out of 12 tracked departures, not the hub's reliability leaders (2 at ≥85%) and not the softest ( 1 below 75%). Destination: Atlanta · fleet on-time rank #3242 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to PWM–ATL.
Routes with a similar on-time rate
What the Data Says About PWM to ATL
2,714 tracked flights put the PWM to ATL pairing (Portland to Atlanta) at a 79.8% on-time rate, squarely in line with the wider network. Delays that do occur run 86.9 minutes on average. Across the 1,027-mile route and its 2 carriers, the trailing 24 months show 1.2% cancelled and 0.3% diverted (1,155 flights sampled).
The monthly split is wide on this route: Oct 2025 posted the strongest performance at 92% on-time, while Jun 2025 came in at just 63% - a 29-point swing worth factoring into travel timing.
On the multi-year calendar, PWM–ATL peaks in April at 90.1% on-time while July carries the heaviest traffic (~64 flights per month) ; the softest month is July at 70.0%, a 20.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does PWM to ATL rank among US routes by traffic? ▼
How often are flights delayed from PWM to ATL? ▼
What is the cancellation rate for PWM to ATL? ▼
How far is the flight from PWM to ATL? ▼
When is the best time to fly from PWM to ATL? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using PWM–ATL data
PWM–ATL is mid-pack at 79.8% on-time; month and carrier mix move more than the corridor headline.
- Compare PWM and ATL airport profiles: delay causes and top routes differ even on the same corridor. PWM airport
- If your dates flex, April (90.1% on-time) beats July (70.0%) on this corridor. Seasonal chart
- 4 other routes post a similar 79.8% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.