Route on-time record

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

Houston (George Bush Intercontinental Airport) to New York (LaGuardia Airport). 4,074 nonstop flights in Jun 2025 to May 2026, 72% arrived within 15 minutes and 2.8% were cancelled. The most reliable flight number was United 2249 at 8:05 AM.

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

IAH → LGA

Houston to New York: 4,074 nonstop flights a year

On time (12 months)

72%

Cancelled

2.8%

avg delay 24 min

Best time to leave

Before 9 AM

87% on time vs 63% 3 to 6 PM

Most reliable airline

Delta

73% chance on time

Check IAH to LGA 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 · United 2249
8:05 AM → 12:40 PM3h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 1156, 1225; its record covers all of them.
89%
chance on time
On time (history)
95%
Cancelled
0.0%
Avg arrival delay
2 min
- Arrived on time 95% of the time (64 flights, Jun 2025 to May 2026).
- Never cancelled in 64 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 3 to 6 PM: 63%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Moderate track record · 64 flights
Find United 2249 fares Opens this date on Aviasales
#2 · Delta 1417
7:05 AM → 11:30 AM3h 28m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
On time (history)
87%
Cancelled
3.9%
Avg arrival delay
11 min
- Arrived on time 87% of the time (341 flights, Jun 2025 to May 2026).
- Cancelled 3.9% of the time (14 of 356).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 3 to 6 PM: 63%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Strong track record · 341 flights
Find Delta 1417 fares Opens this date on Aviasales
#3 · United 1697
7:00 AM → 11:29 AM3h 29m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 2199; its record covers all of them.
84%
chance on time
On time (history)
86%
Cancelled
1.5%
Avg arrival delay
7 min
- Arrived on time 86% of the time (264 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 3 to 6 PM: 63%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Strong track record · 264 flights
Find United 1697 fares Opens this date on Aviasales
#4 · Delta 2140
10:08 AM → 2:42 PM3h 34m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
On time (history)
84%
Cancelled
5.9%
Avg arrival delay
15 min
- Arrived on time 84% of the time (128 flights, Jun 2025 to May 2026).
- Cancelled 5.9% of the time (8 of 136).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 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 · 128 flights
Find Delta 2140 fares Opens this date on Aviasales
#5 · United 678
9:52 AM → 2:29 PM3h 37m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
On time (history)
76%
Cancelled
3.2%
Avg arrival delay
15 min
- Arrived on time 76% of the time (214 flights, Jun 2025 to May 2026).
- Cancelled 3.2% of the time (7 of 222).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 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.
Strong track record · 214 flights
Find United 678 fares Opens this date on Aviasales
#6 · Delta 2920
6:09 PM → 10:40 PM3h 31m nonstop
Local times, typical schedule. Last flown 2026-05-06. Same departure also flew as Delta 2930; its record covers all of them.
71%
chance on time
On time (history)
79%
Cancelled
6.7%
Avg arrival delay
17 min
- Arrived on time 79% of the time (98 flights, Jun 2025 to May 2026).
- Cancelled 6.7% of the time (7 of 105).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Moderate track record · 98 flights
Find Delta 2920 fares Opens this date on Aviasales
#7 · Delta 2088
2:18 PM → 6:59 PM3h 41m nonstop
Local times, typical schedule. Last flown 2026-05-31.
67%
chance on time
On time (history)
74%
Cancelled
0.0%
Avg arrival delay
10 min
- Arrived on time 74% of the time (19 flights, Jun 2025 to May 2026).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- 51% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (19 flights), so its score leans on the airline's record at this hour.
Limited track record · 19 flights
Find Delta 2088 fares Opens this date on Aviasales
#8 · Delta 2900
6:47 PM → 11:27 PM3h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31.
66%
chance on time
On time (history)
71%
Cancelled
0.0%
Avg arrival delay
17 min
- Arrived on time 71% of the time (21 flights, Jun 2025 to May 2026).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
- Short track record (21 flights), so its score leans on the airline's record at this hour.
Limited track record · 21 flights
Find Delta 2900 fares Opens this date on Aviasales
#9 · United 334
4:20 PM → 8:57 PM3h 37m nonstop
Local times, typical schedule. Last flown 2026-05-31.
65%
chance on time
On time (history)
68%
Cancelled
2.8%
Avg arrival delay
31 min
- Arrived on time 68% of the time (105 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 63% on time; Before 9 AM: 87%).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
Moderate track record · 105 flights
Find United 334 fares Opens this date on Aviasales
#10 · United 2750
6:32 PM → 11:15 PM3h 43m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 1708, 742; its record covers all of them.
65%
chance on time
On time (history)
72%
Cancelled
1.6%
Avg arrival delay
22 min
- Arrived on time 72% of the time (60 flights, Jun 2025 to May 2026).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Moderate track record · 60 flights
Find United 2750 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Delta Air Lines73%
1,338 flights · 76% on time as flown · 3.8% cancel
SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)71%
32 flights · 84% on time as flown · 2.9% cancel
United Airlines69%
2,378 flights · 71% on time as flown · 1.8% cancel
Spirit Airlines59%
326 flights · 59% on time as flown · 5.1% cancel

On time by departure time

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

Before 9 AM87%
950 flights · avg delay 9 min
9 AM to noon79%
610 flights · avg delay 16 min
Noon to 3 PM65%
873 flights · avg delay 28 min
3 to 6 PM63%
807 flights · avg delay 36 min
6 to 9 PM64%
834 flights · avg delay 32 min

Best day: Saturday (82%). Worst: Sunday (72%).

Smarter routing

Nearby airports that run more on time

IAH → EWR 73% chance on time
George Bush Intercontinental Airport to Newark Liberty International Airport · 3,764 flights a year · 17 mi from your airports · yours: 70%
Rank flights Fares

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

Air traffic control and airport volume46%
Airline (crew, maintenance, boarding)25%
Late-arriving aircraft23%
Severe weather5%

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

IAH to LGA questions

What time of day is best to fly IAH to LGA?: Before 9 AM: 87% of flights arrived on time, against 63% 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 IAH to LGA?: Delta, with a season-adjusted 73% chance of operating and arriving on time over 1,338 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 IAH to LGA?: July (64% on time); the best was September (85%), 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 IAH

Live status: FAA delays and ground stops

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