Route on-time record
MEM to HOU: most on-time flights and the best time to fly
Memphis (Memphis International Airport) to Houston (William P. Hobby Airport). 812 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was Southwest 4017 at 5:30 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MEM → HOU
Memphis to Houston: 812 nonstop flights a year
On time (12 months)
78%
Cancelled
0.9%
avg delay 12 min
Best time to leave
Before 9 AM
93% on time vs 63% 6 to 9 PM
Most reliable airline
Southwest
78% chance on time
Lowest nonstop fare seen in the next two months: $322 (Southwest 3017 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 · Southwest 4017
5:30 AM → 7:15 AM1h 45m nonstop
Local times, typical schedule. Last flown 2026-04-06.
89%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 93% of the time (28 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 63%).
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find Southwest 4017 fares Opens this date on Aviasales#2 · Southwest 3015
5:40 AM → 7:20 AM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 79%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 79% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 63%).
- 78% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 47 flights
Find Southwest 3015 fares Opens this date on Aviasales#3 · Southwest 1138
11:35 AM → 1:25 PM1h 50m nonstop
Local times, typical schedule. Last flown 2026-04-06.
81%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 86% of the time (28 flights, Jun 2025 to May 2026).
- Lands inside HOU's trouble window: 80% of its 40 ground stops and delay programs started between noon and 6 PM.
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find Southwest 1138 fares Opens this date on Aviasales#4 · Southwest 2079
8:05 PM → 9:50 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-04-06.
76%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 87% of the time (15 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 63% on time; Before 9 AM: 93%).
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 2079 fares Opens this date on Aviasales#5 · Southwest 1433
12:20 PM → 2:00 PM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-30.
73%
chance on time
- On time (history)
- 72%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 72% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Lands inside HOU's trouble window: 80% of its 40 ground stops and delay programs started between noon and 6 PM.
- Short track record (47 flights), so its score leans on the airline's record at this hour.
Limited track record · 47 flights
Find Southwest 1433 fares Opens this date on Aviasales#6 · Southwest 3698
6:45 PM → 8:30 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-04-01.
72%
chance on time
- On time (history)
- 63%
- Cancelled
- 0.0%
- Avg arrival delay
- 19 min
- Arrived on time 63% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 63% on time; Before 9 AM: 93%).
- 93% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 3698 fares Opens this date on Aviasales#7 · Southwest 2660
7:20 PM → 9:00 PM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31.
59%
chance on time
- On time (history)
- 45%
- Cancelled
- 0.0%
- Avg arrival delay
- 31 min
- Arrived on time 45% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 63% on time; Before 9 AM: 93%).
- 76% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 31 flights
Find Southwest 2660 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines78%
812 flights · 78% on time as flown · 0.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM93%
330 flights · avg delay 4 min
- 9 AM to noon79%
56 flights · avg delay 13 min
- Noon to 3 PM65%
102 flights · avg delay 20 min
- 3 to 6 PM87%
63 flights · avg delay 6 min
- 6 to 9 PM63%
261 flights · avg delay 21 min
Best day: Wednesday (88%). 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.
What delays this route
- Late-arriving aircraft54%
- Airline (crew, maintenance, boarding)25%
- Air traffic control and airport volume20%
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 HOU questions
- What time of day is best to fly MEM to HOU?
- Before 9 AM: 93% of flights arrived on time, against 63% for departures 6 to 9 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 HOU?
- Southwest, with a season-adjusted 78% chance of operating and arriving on time over 812 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 HOU?
- May (71% on time); the best was September (89%), 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
- HOU 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 IAH 79%
- MEM to DTW 83%
- MEM to LGA 78%
- MEM to MSP 87%
- MEM to MCO 78%
- MEM to PHL 81%
Live status: FAA delays and ground stops