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Delta Air Lines / IAH → DTW

DL 1043 on time

Delta Air Lines 1043: Houston to Detroit at 11:32 a.m.; Detroit to Houston at 8:35 a.m. (past 12 months). Figures below the title are for IAH → DTW, its busiest leg

On time
84%
266 flights · likely 79–88%
Cancelled
0.4%
of scheduled flights
Typical arrival
−8 min
median vs schedule
When late
+56 min
average delay
Similar flights
77%
DL, same route & hour

About 1 in 6 DL 1043 flights from Houston arrived 15+ minutes late, diverted or cancelled over the past year (16%); 0.4% were cancelled. The typical flight landed 8 minutes early.

DL 1043: IAH → DTW

Scheduled to leave Houston at 11:32 a.m. local time. Over the past year it arrived on time 84% of the time (266 flights), better than other DL flights on the route at that hour (77%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Aug 2025: 81% on time (31 flights)81AugSep 2025: 93% on time (30 flights)93SepOct 2025: 94% on time (31 flights)94OctNov 2025: 83% on time (29 flights)83NovDec 2025: 94% on time (31 flights)94DecJan 2026: too few flights (4 flights)JanFeb 2026: 88% on time (17 flights)88FebMar 2026: too few flights (7 flights)MarMay 2026: 76% on time (25 flights)76MayJun 2026: 77% on time (30 flights)77JunJul 2026: 71% on time (31 flights)71JulAug 2026: 84% on time (31 flights)84Aug

By day of week

DayFlightsOn time
Monday3876%
Tuesday3776%
Wednesday3797%
Thursday3884%
Friday3987%
Saturday3985%
Sunday3884%

Why it was late

Late inbound plane 70%Airline (crew, maintenance, ops) 14%Air traffic & airport (NAS) 12%Severe weather 4%

All flights IAH → DTW · Connecting off DL 1043? Check the risk

DL 1043: DTW → IAH

Scheduled to leave Detroit at 8:35 a.m. local time. Over the past year it arrived on time 83% of the time (219 flights), in line with other DL flights on the route at that hour (84%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Apr 2025: 80% on time (30 flights)80AprMay 2025: 81% on time (31 flights)81MayJun 2025: too few flights (7 flights)JunDec 2025: too few flights (12 flights)DecJan 2026: 71% on time (31 flights)71JanFeb 2026: 100% on time (28 flights)100FebMar 2026: too few flights (7 flights)MarApr 2026: 94% on time (18 flights)94AprMay 2026: 77% on time (31 flights)77MayJun 2026: 73% on time (30 flights)73JunJul 2026: 81% on time (31 flights)81JulAug 2026: 84% on time (31 flights)84Aug

By day of week

DayFlightsOn time
Monday3275%
Tuesday3190%
Wednesday3187%
Thursday3184%
Friday3181%
Saturday3272%
Sunday3190%

Why it was late

Air traffic & airport (NAS) 35%Severe weather 23%Airline (crew, maintenance, ops) 23%Late inbound plane 20%

All flights DTW → IAH · Connecting off DL 1043? Check the risk

Questions

How often is DL 1043 from IAH to DTW late?

Delta Air Lines 1043 from Houston, TX to Detroit, MI arrived 15 or more minutes late, was diverted or was cancelled on 16% of 266 scheduled flights between September 2025 and August 2026. 0.4% were cancelled.

How often is DL 1043 from DTW to IAH late?

Delta Air Lines 1043 from Detroit, MI to Houston, TX arrived 15 or more minutes late, was diverted or was cancelled on 17% of 219 scheduled flights between September 2025 and August 2026. 0.9% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.