Route reliability record
ATL→HSV
Atlanta to Huntsville
- Flights
- 2,235
- Period
- September 2025 to August 2026
- Distance
- 151 mi
- Carriers
- 2
This route lands a B, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 2,235 ATL to HSV flights, with a median arrival 9 minutes early.
Best time to fly ATL to HSV: a 8am–11am departure, ideally on a Thursday. Flights in that window arrived on time 91.0% of the time and Thursday flights 89.2%, against 83.7% for the route overall.
Set against the rest of the country, this route's record is 6 points better than the US average of 77.3%. That gap is worth roughly 64 fewer late arrivals for every thousand flights.
Key figures
On time
83.7%
Arrivals under 15 minutes late, of 2,190 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
1.88%
National rate is 1.89%
Best carrier
Delta
83.7% on time across 2,228 flights
These figures cover 2,235 flights between September 2025 and August 2026. The median arrival is 9 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
Which airline is most reliable on ATL to HSV
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlinesthin sample | 7 | 85.7% | 31 min | 0.00% | A+ |
| Delta Air Lines | 2,228 | 83.7% | 65 min | 1.89% | B |
Flight by flight
Flights on ATL to HSV
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 14 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am440 flights91.0%
- 11am–2pm381 flights89.2%
- 2pm–5pm383 flights81.3%
- 5pm–8pm494 flights76.7%
- 8pm–5am537 flights81.9%
Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 91.0% of the time, against 76.7% for the evening window. That is 14 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8pm–5am window is the busiest, with 537 flights scheduled in it.
Explore
Filter ATL to HSV by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On ATL to HSV, the best departure window is 8am–11am at 91.0% on time and the worst is 5pm–8pm at 76.7%, a wide gap of 14.3 points. All US flights leaving 8am–11am ran 83.9%.
- 5–8am—
- 8–11am91.0%
- 11am–2pm89.2%
- 2–5pm81.3%
- 5–8pm76.7%
- 8pm–5am81.9%
best all US flightsScale 60% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 19 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
July is the worst month at 71.3% on time, 19 points below September, the best at 90.7%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. July was the busiest month here, with 220 flights.
Across the week, Thursday is the strongest day at 89.2% on time and Sunday the weakest at 78.2%, a spread of 11 points.
Delay causes
Why this route gets delayed
Carrier accounts for 46% of the 23,000 delay minutes carriers reported here, and the remaining four split what is left.
- 46%Carrier
- 37%Late-arriving aircraft
- 11%National Airspace System
- 7%Extreme weather
37% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 23,000 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 23,269 reported delay minutes.
The largest share of delay minutes, 46%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 11,000 of the 23,000 delay minutes reported here.
Cancellations sit at 1.88% against a national 1.89%, which is ordinary. Diversions add another 0.13%.
Connections and stage length
What a delay here actually costs
6.5% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
At 151 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 8am–11am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 89.0% on time across 2,235 flights, 5 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 5 points of difference.
The sample behind these figures is 2,235 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Work out the risk of missing a connection in HSV after this flight
What to do with this
Booking this route
Put together: the calendar is the biggest lever here, not the carrier or the hour. September runs 90.7% on time and July 71.3%, a swing of 19 points. If the dates move at all, move them out of July before you think about anything else. 2,190 completed flights over 12 months sit behind that.
Common questions
ATL to HSV questions
How often is ATL to HSV delayed?
About one flight in six arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 16.3% of the 2,235 flights in this analysis, against 22.7% nationally. Delayed flights are late by about an hour on average.
How reliable is ATL to HSV compared with the rest of the country?
83.7% of flights arrive on time here against a national 77.3%, a difference of 6 points in its favour. That is worth a B on this site's grading scale.
What time of day has the fewest delays on ATL to HSV?
The 8am–11am departure window is the strongest at 91.0% on time. The 5pm–8pm window is the weakest at 76.7%, 14 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are July delays on ATL to HSV?
July is the weakest month at 71.3% on time, compared with 90.7% in September. Across the year that is 19 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- HSV to ATL — the return legseparate record
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- ATL to LGA, a related route72.3%
- DFW to HSV, a related route76.5%
- ATL to MCO, a related route70.3%
- SkyWest Airlines on-time record85.7%
- Delta Air Lines on-time record83.7%
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
Direction matters. ATL to HSV and HSV to ATL are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.