ON TIMEBOARD

DL 3851 on time

Delta Air Lines 3851: Minneapolis to Rapid City at 2:45 p.m.; Rapid City to Minneapolis at 4:33 p.m. (past 12 months). Figures below the title are for MSP → RAP, its busiest leg

On time
79%
141 flights · likely 72–85%
Cancelled
0.0%
of scheduled flights
Typical arrival
−5 min
median vs schedule
When late
+70 min
average delay
Similar flights
79%
DL, same route & hour

About 1 in 5 DL 3851 flights from Minneapolis arrived 15+ minutes late, diverted or cancelled over the past year (21%); 0.0% were cancelled. The typical flight landed 5 minutes early.

DL 3851: MSP → RAP

Scheduled to leave Minneapolis at 2:45 p.m. local time, operated by SkyWest as OO 3851. Over the past year it arrived on time 79% of the time (141 flights), in line with other DL flights on the route at that hour (79%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Aug 2024: 90% on time (30 flights)90AugSep 2024: 96% on time (28 flights)96SepOct 2024: 97% on time (30 flights)97OctNov 2024: too few flights (9 flights)NovApr 2025: too few flights (2 flights)AprMay 2025: 100% on time (26 flights)100MayJun 2025: too few flights (7 flights)JunApr 2026: 83% on time (18 flights)83AprMay 2026: 74% on time (31 flights)74MayJun 2026: 80% on time (30 flights)80JunJul 2026: 90% on time (31 flights)90JulAug 2026: 71% on time (31 flights)71Aug

By day of week

DayFlightsOn time
Monday2171%
Tuesday2090%
Wednesday2095%
Thursday2070%
Friday2070%
Saturday2075%
Sunday2085%

Why it was late

Airline (crew, maintenance, ops) 88%Air traffic & airport (NAS) 7%Severe weather 5%

All flights MSP → RAP · Connecting off DL 3851? Check the risk

DL 3851: RAP → MSP

Scheduled to leave Rapid City at 4:33 p.m. local time, operated by SkyWest as OO 3851. Over the past year it arrived on time 83% of the time (140 flights), in line with other DL flights on the route at that hour (82%). Last seen in the data Aug 31, 2026.

Usually Delta Air Lines's last flight of the day from Rapid City to Minneapolis (100% of days). Delta Air Lines's last RAP–MSP flight was cancelled 1.4% of the time, against 1.2% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 6:48 a.m. the next morning.

Month by month

40%70%100%Aug 2024: 80% on time (30 flights)80AugSep 2024: 86% on time (28 flights)86SepOct 2024: 100% on time (30 flights)100OctNov 2024: too few flights (9 flights)NovApr 2025: too few flights (2 flights)AprMay 2025: 85% on time (26 flights)85MayJun 2025: too few flights (7 flights)JunApr 2026: 72% on time (18 flights)72AprMay 2026: 87% on time (31 flights)87MayJun 2026: 87% on time (30 flights)87JunJul 2026: 80% on time (30 flights)80JulAug 2026: 84% on time (31 flights)84Aug

By day of week

DayFlightsOn time
Monday2176%
Tuesday2090%
Wednesday2095%
Thursday2070%
Friday2075%
Saturday19—
Sunday2085%

Why it was late

Airline (crew, maintenance, ops) 90%Severe weather 6%Air traffic & airport (NAS) 4%

All flights RAP → MSP · Connecting off DL 3851? Check the risk

Questions

How often is DL 3851 from MSP to RAP late?

Delta Air Lines 3851 from Minneapolis, MN to Rapid City, SD arrived 15 or more minutes late, was diverted or was cancelled on 21% of 141 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.

How often is DL 3851 from RAP to MSP late?

Delta Air Lines 3851 from Rapid City, SD to Minneapolis, MN arrived 15 or more minutes late, was diverted or was cancelled on 17% of 140 scheduled flights between September 2025 and August 2026. 0.0% 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.