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Route on-time record

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

Chicago (Chicago O'Hare International Airport) to New York (LaGuardia Airport). 11,634 nonstop flights in Jun 2025 to May 2026, 67% arrived within 15 minutes and 4.5% were cancelled. The most reliable flight number was United 1627 at 6:00 AM.

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

ORD → LGA

Chicago to New York: 11,634 nonstop flights a year

On time (12 months)

67%

Cancelled

4.5%

avg delay 29 min

Best time to leave

Before 9 AM

84% on time vs 55% 3 to 6 PM

Most reliable airline

Delta

66% chance on time

Check ORD to LGA fares

Lowest nonstop fare seen in the next two months: $138 (American 3019 on 2026-11-05). 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 · United 1627

    6:00 AM → 9:11 AM2h 11m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 586, 1407, 716; its record covers all of them.

    90%

    chance on time

    On time (history)
    95%
    Cancelled
    2.9%
    Avg arrival delay
    2 min
    • Arrived on time 95% of the time (133 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 3 to 6 PM: 55%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Moderate track record · 133 flights

    Find United 1627 fares Opens this date on Aviasales

  2. #2 · Delta 2767

    6:00 AM → 9:14 AM2h 13m nonstop

    Local times, typical schedule. Last flown 2026-05-29.

    89%

    chance on time

    On time (history)
    93%
    Cancelled
    2.2%
    Avg arrival delay
    9 min
    • Arrived on time 93% of the time (174 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 3 to 6 PM: 55%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Moderate track record · 174 flights

    Find Delta 2767 fares Opens this date on Aviasales

  3. #3 · American 327

    6:00 AM → 9:12 AM2h 12m nonstop

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

    85%

    chance on time

    On time (history)
    89%
    Cancelled
    2.3%
    Avg arrival delay
    5 min
    • Arrived on time 89% of the time (172 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 3 to 6 PM: 55%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Moderate track record · 172 flights

    Find American 327 fares Opens this date on Aviasales

  4. #4 · United 2092

    8:00 AM → 11:18 AM2h 18m nonstop

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

    84%

    chance on time

    On time (history)
    86%
    Cancelled
    1.1%
    Avg arrival delay
    10 min
    • Arrived on time 86% of the time (353 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 3 to 6 PM: 55%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Strong track record · 353 flights

    Find United 2092 fares Opens this date on Aviasales

  5. #5 · United 1657

    7:00 AM → 10:18 AM2h 18m nonstop

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

    81%

    chance on time

    On time (history)
    83%
    Cancelled
    0.8%
    Avg arrival delay
    11 min
    • Arrived on time 83% of the time (253 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 3 to 6 PM: 55%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Strong track record · 253 flights

    Find United 1657 fares Opens this date on Aviasales

  6. #6 · Delta 2271

    9:36 AM → 12:52 PM2h 16m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Delta 426, 1561; its record covers all of them.

    79%

    chance on time

    On time (history)
    83%
    Cancelled
    1.3%
    Avg arrival delay
    9 min
    • Arrived on time 83% of the time (76 flights, Jun 2025 to May 2026).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
    • Lands inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.

    Moderate track record · 76 flights

    Find Delta 2271 fares Opens this date on Aviasales

  7. #7 · United 1793

    8:50 AM → 12:08 PM2h 18m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as United 376, 1044; its record covers all of them.

    78%

    chance on time

    On time (history)
    80%
    Cancelled
    2.3%
    Avg arrival delay
    14 min
    • Arrived on time 80% of the time (85 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 3 to 6 PM: 55%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
    • Lands inside LGA's trouble window: 54% of its 285 ground stops and delay programs started between noon and 6 PM.

    Moderate track record · 85 flights

    Find United 1793 fares Opens this date on Aviasales

  8. #8 · American 386

    7:00 AM → 10:16 AM2h 16m nonstop

    Local times, typical schedule. Last flown 2026-05-19.

    77%

    chance on time

    On time (history)
    83%
    Cancelled
    3.1%
    Avg arrival delay
    13 min
    • Arrived on time 83% of the time (123 flights, Jun 2025 to May 2026).
    • Cancelled 3.1% of the time (4 of 127).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 3 to 6 PM: 55%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Moderate track record · 123 flights

    Find American 386 fares Opens this date on Aviasales

  9. #9 · American 2723

    7:23 AM → 10:30 AM2h 07m nonstop

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

    76%

    chance on time

    On time (history)
    78%
    Cancelled
    1.8%
    Avg arrival delay
    15 min
    • Arrived on time 78% of the time (272 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 3 to 6 PM: 55%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Strong track record · 272 flights

    Find American 2723 fares Opens this date on Aviasales

  10. #10 · Republic 5688 · sold as American Eagle, Delta Connection or United Express

    7:10 AM → 10:28 AM2h 18m nonstop

    Local times, typical schedule. Last flown 2026-04-12.

    75%

    chance on time

    On time (history)
    80%
    Cancelled
    9.1%
    Avg arrival delay
    9 min
    • Arrived on time 80% of the time (10 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 3 to 6 PM: 55%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
    • Short track record (10 flights), so its score leans on the airline's record at this hour.

    Limited track record · 10 flights

    Find 7:10 AM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Delta Air Lines66%

    2,289 flights · 69% on time as flown · 4.3% cancel

  • United Airlines66%

    4,658 flights · 68% on time as flown · 3.2% cancel

  • Republic Airways (sold as American Eagle, Delta Connection or United Express)64%

    1,298 flights · 71% on time as flown · 8.2% cancel

  • American Airlines61%

    2,937 flights · 64% on time as flown · 4.2% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)58%

    92 flights · 61% on time as flown · 9.0% cancel

  • Spirit Airlines57%

    360 flights · 59% on time as flown · 7.0% cancel

On time by departure time

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

  • Before 9 AM84%

    2,961 flights · avg delay 12 min

  • 9 AM to noon72%

    2,151 flights · avg delay 22 min

  • Noon to 3 PM61%

    2,346 flights · avg delay 34 min

  • 3 to 6 PM55%

    1,926 flights · avg delay 45 min

  • 6 to 9 PM56%

    2,250 flights · avg delay 39 min

Best day: Saturday (72%). Worst: Sunday (60%).

Smarter routing

Nearby airports that run more on time

  • ORD → HPN 75% chance on time

    Chicago O'Hare International Airport to Westchester County Airport · 1,477 flights a year · 22 mi from your airports · yours: 64%

    Rank flightsFares

  • ORD → JFK 71% chance on time

    Chicago O'Hare International Airport to John F. Kennedy International Airport · 1,964 flights a year · 11 mi from your airports · yours: 64%

    Rank flightsFares

  • ORD → EWR 67% chance on time

    Chicago O'Hare International Airport to Newark Liberty International Airport · 5,992 flights a year · 17 mi from your airports · yours: 64%

    Rank flightsFares

  • MDW → LGA 66% chance on time

    Chicago Midway International Airport to LaGuardia Airport · 2,368 flights a year · 15 mi from your airports · yours: 64%

    Rank flightsFares

On time by month

All airlines, Jun 2025 to May 2026. One year of data, so a single stormy month can stand out.

J
72
F
80
M
55
A
65
M
73
J
67
J
64
A
71
S
76
O
64
N
59
D
58

What delays this route

  • Late-arriving aircraft38%
  • Air traffic control and airport volume36%
  • Airline (crew, maintenance, boarding)22%
  • Severe weather4%

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

ORD to LGA questions

What time of day is best to fly ORD to LGA?
Before 9 AM: 84% of flights arrived on time, against 55% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from ORD to LGA?
Delta, with a season-adjusted 66% chance of operating and arriving on time over 2,289 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 LGA?
March (55% on time); the best was February (80%), from one year of data, so one bad storm season can move a month.
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 ORD

Live status: FAA delays and ground stops