Route on-time record
MEM to IAH: most on-time flights and the best time to fly
Memphis (Memphis International Airport) to Houston (George Bush Intercontinental Airport). 1,099 nonstop flights in Jun 2025 to May 2026, 79% arrived within 15 minutes and 1.1% were cancelled. The most reliable flight number was SkyWest 5236 at 9:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MEM → IAH
Memphis to Houston: 1,099 nonstop flights a year
On time (12 months)
79%
Cancelled
1.1%
avg delay 17 min
Best time to leave
Before 9 AM
84% on time vs 70% 3 to 6 PM
Most reliable airline
United
82% chance on time
Lowest nonstop fare seen in the next two months: $334 (United 2052 on 2026-10-23). 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 · SkyWest 5236 · sold as United Express, Delta Connection, American Eagle or Alaska
9:00 AM → 11:02 AM2h 02m nonstop
Local times, typical schedule. Last flown 2026-04-29. Same departure also flew as SkyWest 5867; its record covers all of them.
84%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 89% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Short track record (55 flights), so its score leans on the airline's record at this hour.
Limited track record · 55 flights
Find 9:00 AM flight fares Opens this date on Aviasales#2 · United 537
6:15 AM → 8:11 AM1h 56m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 82%
- Cancelled
- 1.8%
- Avg arrival delay
- 11 min
- Arrived on time 82% of the time (107 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: 70%).
Moderate track record · 107 flights
Find United 537 fares Opens this date on Aviasales#3 · SkyWest 5451 · sold as United Express, Delta Connection, American Eagle or Alaska
11:35 AM → 1:37 PM2h 02m nonstop
Local times, typical schedule. Last flown 2026-05-20.
78%
chance on time
- On time (history)
- 81%
- Cancelled
- 2.2%
- Avg arrival delay
- 15 min
- Arrived on time 81% of the time (132 flights, Jun 2025 to May 2026).
- Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- 59% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 132 flights
Find 11:35 AM flight fares Opens this date on Aviasales#4 · SkyWest 5525 · sold as United Express, Delta Connection, American Eagle or Alaska
11:48 AM → 1:40 PM1h 52m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 80% of the time (10 flights, Jun 2025 to May 2026).
- Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- Short track record (10 flights), so its score leans on the airline's record at this hour.
Limited track record · 10 flights
Find 11:48 AM flight fares Opens this date on Aviasales#5 · SkyWest 5798 · sold as United Express, Delta Connection, American Eagle or Alaska
3:20 PM → 5:21 PM2h 01m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 5235; its record covers all of them.
68%
chance on time
- On time (history)
- 68%
- Cancelled
- 0.4%
- Avg arrival delay
- 28 min
- Arrived on time 68% of the time (282 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 70% on time; Before 9 AM: 84%).
- Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
Strong track record · 282 flights
Find 3:20 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines82%
360 flights · 84% on time as flown · 1.5% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)76%
739 flights · 76% on time as flown · 0.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM84%
357 flights · avg delay 9 min
- 9 AM to noon81%
425 flights · avg delay 17 min
- 3 to 6 PM70%
314 flights · avg delay 26 min
Best day: Tuesday (86%). Worst: Friday (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
- Air traffic control and airport volume33%
- Airline (crew, maintenance, boarding)29%
- Late-arriving aircraft26%
- Severe weather12%
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
MEM to IAH questions
- What time of day is best to fly MEM to IAH?
- Before 9 AM: 84% of flights arrived on time, against 70% 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 MEM to IAH?
- United, with a season-adjusted 82% chance of operating and arriving on time over 360 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 MEM to IAH?
- June (70% on time); the best was September (87%), 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 MEM
- IAH to MEM (return)
- MEM to ATL 87%
- MEM to ORD 77%
- MEM to DFW 72%
- MEM to CLT 83%
- MEM to DEN 79%
- MEM to DCA 75%
- MEM to DTW 83%
- MEM to LGA 78%
- MEM to MSP 87%
- MEM to HOU 78%
- MEM to MCO 78%
- MEM to PHL 81%
Live status: FAA delays and ground stops