Route on-time record
DTW to PWM: most on-time flights and the best time to fly
Detroit (Detroit Metropolitan Wayne County Airport) to Portland (Portland International Jetport). 607 nonstop flights in Jun 2025 to May 2026, 82% arrived within 15 minutes and 0.7% were cancelled. The most reliable flight number was Delta 426 at 10:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DTW → PWM
Detroit to Portland: 607 nonstop flights a year
On time (12 months)
82%
Cancelled
0.7%
avg delay 14 min
Best time to leave
No clear winner
Most reliable airline
Delta
84% 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 426
10:00 AM → 11:55 AM1h 55m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 92% of the time (25 flights, Jun 2025 to May 2026).
- Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
Limited track record · 25 flights
Find Delta 426 fares Opens this date on Aviasales#2 · SkyWest 3711 · sold as United Express, Delta Connection, American Eagle or Alaska
2:11 PM → 4:07 PM1h 56m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 92% of the time (25 flights, Jun 2025 to May 2026).
- Departs inside DTW's trouble window: 64% of its 28 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 25 flights
Find 2:11 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines84%
394 flights · 86% on time as flown · 0.7% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)77%
126 flights · 75% on time as flown · 0.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon83%
317 flights · avg delay 16 min
- Noon to 3 PM81%
268 flights · avg delay 12 min
Best day: Wednesday (87%). Worst: Sunday (74%).
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)65%
- Air traffic control and airport volume15%
- Late-arriving aircraft12%
- Severe weather8%
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
DTW to PWM questions
- Which airline is most on time from DTW to PWM?
- Delta, with a season-adjusted 84% chance of operating and arriving on time over 394 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 DTW to PWM?
- January (65% on time); the best was April (92%), 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 DTW
- PWM to DTW (return)
- DTW to ORD 72%
- DTW to ATL 78%
- DTW to LGA 75%
- DTW to MCO 75%
- DTW to EWR 75%
- DTW to CLT 84%
- DTW to DFW 76%
- DTW to DEN 79%
- DTW to DCA 68%
- DTW to PHL 79%
- DTW to LAS 77%
- DTW to FLL 72%
Most on-time flights from DTW on every route →
Live status: FAA delays and ground stops