Route on-time record
PDX to ATL: most on-time flights and the best time to fly
Portland (Portland International Airport) to Atlanta (Hartsfield Jackson Atlanta International Airport). 1,593 nonstop flights in Jun 2025 to May 2026, 87% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was Delta 662 at 6:30 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
PDX → ATL
Portland to Atlanta: 1,593 nonstop flights a year
On time (12 months)
87%
Cancelled
0.9%
avg delay 8 min
Best time to leave
Noon to 3 PM
90% on time vs 86% 9 AM to noon
Most reliable airline
Delta
89% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Delta 662
6:30 AM → 2:05 PM4h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
95%
chance on time
- On time (history)
- 96%
- Cancelled
- 1.1%
- Avg arrival delay
- 4 min
- Arrived on time 96% of the time (358 flights, Jun 2025 to May 2026).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 358 flights
Find Delta 662 fares Opens this date on Aviasales#2 · Delta 888
10:30 PM → 6:04 AM4h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.6%
- Avg arrival delay
- 5 min
- Arrived on time 91% of the time (329 flights, Jun 2025 to May 2026).
Strong track record · 329 flights
Find Delta 888 fares Opens this date on Aviasales#3 · Delta 879
11:51 AM → 7:30 PM4h 39m nonstop
Local times, typical schedule. Last flown 2026-05-06.
89%
chance on time
- On time (history)
- 91%
- Cancelled
- 1.4%
- Avg arrival delay
- 3 min
- Arrived on time 91% of the time (68 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (9 AM to noon: 86% on time; Noon to 3 PM: 90%).
Moderate track record · 68 flights
Find Delta 879 fares Opens this date on Aviasales#4 · Delta 539
11:40 AM → 7:15 PM4h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 86%
- Cancelled
- 1.0%
- Avg arrival delay
- 9 min
- Arrived on time 86% of the time (291 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (9 AM to noon: 86% on time; Noon to 3 PM: 90%).
Strong track record · 291 flights
Find Delta 539 fares Opens this date on Aviasales#5 · Alaska 784
7:45 AM → 3:33 PM4h 48m nonstop
Local times, typical schedule. Last flown 2026-05-31.
73%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 73% of the time (274 flights, Jun 2025 to May 2026).
- Never cancelled in 274 scheduled flights.
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 274 flights
Find Alaska 784 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines89%
1,306 flights · 90% on time as flown · 1.1% cancel
- Alaska Airlines77%
286 flights · 74% on time as flown · 0.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM87%
650 flights · avg delay 7 min
- 9 AM to noon86%
311 flights · avg delay 9 min
- Noon to 3 PM90%
237 flights · avg delay 6 min
- After 9 PM88%
395 flights · avg delay 10 min
Best day: Thursday (90%). Worst: Friday (84%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Airline (crew, maintenance, boarding)50%
- Late-arriving aircraft26%
- Air traffic control and airport volume24%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
PDX to ATL questions
- What time of day is best to fly PDX to ATL?
- Noon to 3 PM: 90% of flights arrived on time, against 86% for departures 9 AM to noon.
- Which airline is most on time from PDX to ATL?
- Delta, with a season-adjusted 89% chance of operating and arriving on time over 1,306 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on PDX to ATL?
- July (81% on time); the best was February (93%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from PDX
- ATL to PDX (return)
- PDX to SEA 84%
- PDX to LAX 87%
- PDX to DEN 80%
- PDX to PHX 80%
- PDX to SFO 75%
- PDX to LAS 81%
- PDX to ORD 77%
- PDX to DFW 80%
- PDX to SLC 88%
- PDX to SMF 83%
- PDX to SAN 80%
- PDX to SJC 82%
Live status: FAA delays and ground stops