ON TIMEBOARD

AA 3820 on time

American Airlines 3820: Dallas to Sioux Falls at 2:30 p.m.; Sioux Falls to Dallas at 5:35 p.m. (past 12 months). Figures below the title are for DFW → FSD, its busiest leg

On time
85%
201 flights · likely 79–89%
Cancelled
1.5%
of scheduled flights
Typical arrival
−9 min
median vs schedule
When late
+54 min
average delay
Similar flights
74%
AA, same route & hour

About 1 in 7 AA 3820 flights from Dallas arrived 15+ minutes late, diverted or cancelled over the past year (15%); 1.5% were cancelled. The typical flight landed 9 minutes early.

AA 3820: DFW → FSD

Scheduled to leave Dallas at 2:30 p.m. local time, operated by Envoy as MQ 3820. Over the past year it arrived on time 85% of the time (201 flights), better than other AA flights on the route at that hour (74%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2024: 82% on time (17 flights)82SepOct 2024: 95% on time (22 flights)95OctNov 2024: too few flights (4 flights)NovOct 2025: 84% on time (25 flights)84OctNov 2025: 82% on time (28 flights)82NovDec 2025: 79% on time (29 flights)79DecJan 2026: 83% on time (30 flights)83JanFeb 2026: 96% on time (25 flights)96FebMar 2026: 94% on time (31 flights)94MarApr 2026: too few flights (6 flights)AprAug 2026: 81% on time (27 flights)81Aug

By day of week

DayFlightsOn time
Monday3090%
Tuesday2993%
Wednesday2685%
Thursday2979%
Friday2997%
Saturday2979%
Sunday2972%

Why it was late

Late inbound plane 48%Air traffic & airport (NAS) 27%Airline (crew, maintenance, ops) 21%Severe weather 4%

All flights DFW → FSD · Connecting off AA 3820? Check the risk

AA 3820: FSD → DFW

Scheduled to leave Sioux Falls at 5:35 p.m. local time, operated by Envoy as MQ 3820. Over the past year it arrived on time 80% of the time (201 flights), better than other AA flights on the route at that hour (69%). Last seen in the data Aug 31, 2026.

Usually American Airlines's last flight of the day from Sioux Falls to Dallas (100% of days). American Airlines's last FSD–DFW flight was cancelled 3.0% of the time, against 3.2% for its earlier ones. If it's cancelled, the next American Airlines flight is usually around 6:00 a.m. the next morning.

Month by month

40%70%100%Sep 2024: 71% on time (17 flights)71SepOct 2024: 91% on time (22 flights)91OctNov 2024: too few flights (4 flights)NovOct 2025: 76% on time (25 flights)76OctNov 2025: 71% on time (28 flights)71NovDec 2025: 72% on time (29 flights)72DecJan 2026: 83% on time (30 flights)83JanFeb 2026: 92% on time (25 flights)92FebMar 2026: 87% on time (31 flights)87MarApr 2026: too few flights (6 flights)AprAug 2026: 78% on time (27 flights)78Aug

By day of week

DayFlightsOn time
Monday3087%
Tuesday2990%
Wednesday2677%
Thursday2976%
Friday2990%
Saturday2972%
Sunday2969%

Why it was late

Late inbound plane 62%Air traffic & airport (NAS) 19%Airline (crew, maintenance, ops) 11%Severe weather 7%Security 1%

All flights FSD → DFW · Connecting off AA 3820? Check the risk

Questions

How often is AA 3820 from DFW to FSD late?

American Airlines 3820 from Dallas/Fort Worth, TX to Sioux Falls, SD arrived 15 or more minutes late, was diverted or was cancelled on 15% of 201 scheduled flights between September 2025 and August 2026. 1.5% were cancelled.

How often is AA 3820 from FSD to DFW late?

American Airlines 3820 from Sioux Falls, SD to Dallas/Fort Worth, TX arrived 15 or more minutes late, was diverted or was cancelled on 20% of 201 scheduled flights between September 2025 and August 2026. 1.5% 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 American Airlines for today's flight. Method.