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Route on-time record

PWM to DTW: most on-time flights and the best time to fly

Portland (Portland International Jetport) to Detroit (Detroit Metropolitan Wayne County Airport). 607 nonstop flights in Jun 2025 to May 2026, 79% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was Delta 426 at 12:50 PM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

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PWM → DTW

Portland to Detroit: 607 nonstop flights a year

On time (12 months)

79%

Cancelled

0.8%

avg delay 21 min

Best time to leave

No clear winner

Most reliable airline

Delta

79% chance on time

Check PWM to DTW fares

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. #1 · Delta 426

    12:50 PM → 3:01 PM2h 11m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    82%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    3 min
    • Arrived on time 88% of the time (25 flights, Jun 2025 to May 2026).
    • Lands 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 Delta 426 fares Opens this date on Aviasales

  2. #2 · SkyWest 3711 · sold as United Express, Delta Connection, American Eagle or Alaska

    4:48 PM → 7:04 PM2h 16m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    77%

    chance on time

    On time (history)
    84%
    Cancelled
    0.0%
    Avg arrival delay
    16 min
    • Arrived on time 84% of the time (25 flights, Jun 2025 to May 2026).

    Limited track record · 25 flights

    Find 4:48 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Delta Air Lines79%

    394 flights · 80% on time as flown · 1.0% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)73%

    126 flights · 71% on time as flown · 0.4% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Noon to 3 PM79%

    317 flights · avg delay 23 min

  • 3 to 6 PM78%

    267 flights · avg delay 19 min

Best day: Wednesday (86%). 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.

J
69
F
84
M
81
A
93
M
86
J
75
J
76
A
77
S
84
O
83
N
87
D
79

What delays this route

  • Airline (crew, maintenance, boarding)44%
  • Late-arriving aircraft23%
  • Severe weather22%
  • Air traffic control and airport volume10%

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

Finding the most reliable connections from PWM to DTW…

PWM to DTW questions

Which airline is most on time from PWM to DTW?
Delta, with a season-adjusted 79% 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 PWM to DTW?
January (69% on time); the best was April (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 PWM

Live status: FAA delays and ground stops