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Route on-time record

ORD to DLH: most on-time flights and the best time to fly

Chicago (Chicago O'Hare International Airport) to Duluth (Duluth International Airport). 1,230 nonstop flights in Jun 2025 to May 2026, 65% arrived within 15 minutes and 3.5% were cancelled. The most reliable flight number was SkyWest 5819 at 8:50 AM.

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

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ORD → DLH

Chicago to Duluth: 1,230 nonstop flights a year

On time (12 months)

65%

Cancelled

3.5%

avg delay 29 min

Best time to leave

9 AM to noon

82% on time vs 57% 6 to 9 PM

Most reliable airline

SkyWest

61% chance on time

Check ORD to DLH 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 · SkyWest 5819 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:50 AM → 10:43 AM1h 49m nonstop

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

    68%

    chance on time

    On time (history)
    72%
    Cancelled
    3.1%
    Avg arrival delay
    18 min
    • Arrived on time 72% of the time (277 flights, Jun 2025 to May 2026).
    • Cancelled 3.1% of the time (9 of 288).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).

    Strong track record · 277 flights

    Find 8:50 AM flight fares Opens this date on Aviasales

  2. #2 · SkyWest 5851 · sold as United Express, Delta Connection, American Eagle or Alaska

    12:40 PM → 2:26 PM1h 46m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 5437; its record covers all of them.

    66%

    chance on time

    On time (history)
    67%
    Cancelled
    2.1%
    Avg arrival delay
    25 min
    • Arrived on time 67% of the time (324 flights, Jun 2025 to May 2026).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).

    Strong track record · 324 flights

    Find 12:40 PM flight fares Opens this date on Aviasales

  3. #3 · SkyWest 5672 · sold as United Express, Delta Connection, American Eagle or Alaska

    3:40 PM → 5:34 PM1h 54m nonstop

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

    65%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    4 min
    • Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
    • Departs inside ORD's trouble window: 43% of its 237 ground stops and delay programs started between 2 PM and 8 PM.

    Limited track record · 11 flights

    Find 3:40 PM flight fares Opens this date on Aviasales

  4. #4 · SkyWest 5656 · sold as United Express, Delta Connection, American Eagle or Alaska

    9:20 PM → 11:11 PM1h 51m nonstop

    Local times, typical schedule. Last flown 2026-05-30.

    64%

    chance on time

    On time (history)
    78%
    Cancelled
    0.0%
    Avg arrival delay
    19 min
    • Arrived on time 78% of the time (9 flights, Jun 2025 to May 2026).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).

    Limited track record · 9 flights

    Find 9:20 PM flight fares Opens this date on Aviasales

  5. #5 · SkyWest 5293 · sold as United Express, Delta Connection, American Eagle or Alaska

    3:50 PM → 5:35 PM1h 45m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    57%

    chance on time

    On time (history)
    57%
    Cancelled
    0.0%
    Avg arrival delay
    38 min
    • Arrived on time 57% of the time (21 flights, Jun 2025 to May 2026).
    • Departs inside ORD's trouble window: 43% of its 237 ground stops and delay programs started between 2 PM and 8 PM.
    • 51% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 21 flights

    Find 3:50 PM flight fares Opens this date on Aviasales

  6. #6 · SkyWest 5275 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:15 PM → 10:04 PM1h 49m nonstop

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

    55%

    chance on time

    On time (history)
    56%
    Cancelled
    3.7%
    Avg arrival delay
    44 min
    • Arrived on time 56% of the time (312 flights, Jun 2025 to May 2026).
    • Cancelled 3.7% of the time (12 of 324).
    • Leaves in this route's least on-time window (6 to 9 PM: 57% on time; 9 AM to noon: 82%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).

    Strong track record · 312 flights

    Find 8:15 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)61%

    1,143 flights · 64% on time as flown · 3.3% cancel

On time by departure time

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

  • Before 9 AM69%

    216 flights · avg delay 19 min

  • 9 AM to noon82%

    77 flights · avg delay 13 min

  • Noon to 3 PM69%

    365 flights · avg delay 23 min

  • 3 to 6 PM57%

    187 flights · avg delay 32 min

  • 6 to 9 PM57%

    339 flights · avg delay 40 min

  • After 9 PM63%

    46 flights · avg delay 60 min

Best day: Thursday (75%). Worst: Friday (67%).

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
60
F
69
M
65
A
76
M
70
J
72
J
72
A
75
S
73
O
80
N
72
D
64

What delays this route

  • Airline (crew, maintenance, boarding)36%
  • Late-arriving aircraft35%
  • Air traffic control and airport volume21%
  • 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

Finding the most reliable connections from ORD to DLH…

ORD to DLH questions

What time of day is best to fly ORD to DLH?
9 AM to noon: 82% of flights arrived on time, against 57% for departures 6 to 9 PM.
Which airline is most on time from ORD to DLH?
SkyWest, with a season-adjusted 61% chance of operating and arriving on time over 1,143 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 ORD to DLH?
January (60% on time); the best was October (80%), 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.

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Live status: FAA delays and ground stops