ON TIMEBOARD

SMF → ATL on time

Sacramento (Sacramento, CA) to Atlanta Hartsfield-Jackson (Atlanta, GA). Every scheduled flight, September 2025 to August 2026.

On time
91%
arrived < 15 min late
Cancelled
1.4%
1,007 flights
Typical arrival
−13 min
median vs schedule
When late
+93 min
average delay
Flights / day
3
1 airline

91% of flights from Sacramento to Atlanta arrived on time over the past 12 months. That is better than the typical U.S. route. The 10 p.m. departures ran on time 93% of the time; the noon ones 89%. 4% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for SMF → ATL: when a flight was late, it was under 45 minutes late 49% of the time. About 1 in 37 flights landed an hour or more late, and 1 in 168 three hours or more; 1.4% were cancelled outright.

Share of all 1,007 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
Delta Air Lines1,00791%1.4%−13 min2.7%+93 minDelta Air Lines

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at SMF). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%6 a.m. departures: too few flights (78 flights)6a7 a.m. departures: 92% on time (287 flights)927a8 a.m. departures: too few flights8a9 a.m. departures: too few flights9a10 a.m. departures: too few flights10a11 a.m. departures: too few flights11anoon departures: 89% on time (364 flights)8912p1 p.m. departures: too few flights1p2 p.m. departures: too few flights2p3 p.m. departures: too few flights3p4 p.m. departures: too few flights4p5 p.m. departures: too few flights5p6 p.m. departures: too few flights6p7 p.m. departures: too few flights7p8 p.m. departures: too few flights8p9 p.m. departures: too few flights9p10 p.m. departures: 93% on time (278 flights)9310p
SMF → ATL, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

Last flight of the day

On SMF → ATL, each airline's last flight of the day was cancelled 1.7% of the time, against 1.3% for its earlier flights (1.3× as often). It arrived 3+ hours late 0.5% of the time (earlier flights: 0.6%). It matters more than the numbers suggest. Miss an earlier flight and there's another one that evening; miss the last one and you're usually waiting until morning.

AirlineLast departureLast: cancelledLast: 3h+ lateEarlier: cancelledNext morning
Delta Air Lines10:00 p.m.1.7%0.5%1.3%first flight 6:35 a.m.

Last flight = the airline's last scheduled departure on this route that day, on days it flies the route at least twice; past 12 months. Times are typical scheduled times over the latest three months.

If you need to be in ATL tonight, book an earlier flight so there's a backup if it's cancelled.

By month

Each calendar month pooled over 2023–2026. Best: February (96%). Worst: July (80%).

40%70%100%Jan: 85% on time (239 flights)85JanFeb: 96% on time (227 flights)96FebMar: 86% on time (257 flights)86MarApr: 91% on time (249 flights)91AprMay: 92% on time (253 flights)92MayJun: 88% on time (256 flights)88JunJul: 80% on time (260 flights)80JulAug: 90% on time (246 flights)90AugSep: 94% on time (235 flights)94SepOct: 93% on time (251 flights)93OctNov: 89% on time (225 flights)89NovDec: 87% on time (259 flights)87Dec

By day of week

DayFlightsOn timeCancelled
Monday15491%3.9%
Tuesday14891%0.0%
Wednesday14699%0.0%
Thursday14996%0.0%
Friday15288%0.7%
Saturday10888%2.8%
Sunday15086%2.7%

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Airline (crew, maintenance, ops) 64%Late inbound plane 25%Air traffic & airport (NAS) 11%

Cancellations: airline 11 · weather 3

Month by month

Not enough months with data to draw a trend.

Flight numbers on this route

Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.

FlightDepartsFlightsOn timeCancelledTypical arrivalOperated by
DL 7417:00 a.m.36592%0.5%−12 minDelta Air Lines
DL 90412:28 p.m.36489%2.5%−15 minDelta Air Lines

Worst days in the past year

DateFlightsOn timeCancelled
Mar 6, 202630%0
Dec 7, 202530%1
Mar 16, 202630%3
Aug 6, 2026333%0
Jun 22, 2026333%0

Questions

How often are flights from SMF to ATL on time?

91% of 1,007 scheduled flights from Sacramento, CA to Atlanta, GA arrived within 15 minutes of schedule between September 2025 and August 2026. 1.4% were cancelled.

What is the best time of day to fly SMF to ATL?

Flights scheduled to leave at 10 p.m. were the most reliable (93% on time). The noon departures were the least (89%).

What month has the most delays from SMF to ATL?

July (80% on time). The best month is February (96%), over 2023–2026.

Is the last flight of the day from SMF to ATL more likely to be cancelled?

Yes. Each airline's last SMF–ATL flight of the day was cancelled 1.7% of the time over the past year, against 1.3% for its earlier flights. If the last flight is cancelled, the next one is usually the following morning.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.