Route reliability record
ATL→HPN
Atlanta to White Plains
- Flights
- 717
- Period
- July 2025 to June 2026
- Distance
- 781 mi
- Carriers
- 1
This route lands a B, level with the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 717 ATL to HPN flights, with a median arrival 6 minutes early.
Best time to fly ATL to HPN: a 8am–11am departure, ideally on a Wednesday. Flights in that window arrived on time 82.2% of the time and Wednesday flights 84.0%, against 77.9% for the route overall.
The US average over the same twelve months is 77.6%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
77.9%
Arrivals under 15 minutes late, of 693 completed flights
Avg delay
67 min
Across delayed arrivals only, not all flights
Cancelled
2.51%
National rate is 1.81%
Best carrier
Delta
77.9% on time across 717 flights
These figures cover 717 flights between July 2025 and June 2026. The median arrival is 6 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.
Carrier by carrier
Which airline is most reliable on ATL to HPN
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 |
|---|---|---|---|---|---|
| Delta Air Lines | 717 | 77.9% | 67 min | 2.51% | B |
Flight by flight
Flights on ATL to HPN
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.
Best ways to make this trip
The most reliable ways to fly Atlanta to White Plains
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 4 of the top 5 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. ATL → JFKAtlanta to New York | Delta Air Lines | 78.5% | 79.7% | 1.51% | 8am–11am, Wed | DL 1034 09:00 |
| 2. ATL → EWRAtlanta to Newark | United Airlines | 77.1% | 79.5% | 3.06% | 5am–8am, Wed | UA 555 16:35 |
| 3. ATL → HPNAtlanta to White Plains | Delta Air Lines | 75.9% | 77.9% | 2.51% | 8am–11am, Wed | DL 1616 19:59 |
| 4. ATL → LGAAtlanta to New York | Delta Air Lines | 74.4% | 76.7% | 2.96% | 5am–8am, Sat | DL 323 07:30 |
| 5. ATL → LGAAtlanta to New York | Republic Airways | 73.1% | 77.1% | 5.14% | 5am–8am, Sat | — |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 717 flights.
- 5am–8am—
- 8am–11am358 flights82.2%
- 11am–2pm—
- 2pm–5pm—
- 5pm–8pm84 flights75.6%
- 8pm–5am275 flights73.0%
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 82.2% of the time, against 73.0% for the overnight window. That is 9 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 358 flights scheduled in it.
Across the year
When delays peak on this route
This route's year swings by 21 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.
December is the weak month at 67.2% on time, against 87.9% in September. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. January was the busiest month here, with 62 flights.
Across the week, Wednesday is the strongest day at 84.0% on time and Tuesday the weakest at 73.0%. 11 points is a smaller lever than departure hour, but it is free.
Delay causes
Why this route gets delayed
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 10,000 reported delay minutes.
- 39%Carrier
- 27%National Airspace System
- 25%Late-arriving aircraft
- 8%Extreme weather
- 0%Security
The largest share of delay minutes, 39%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 4,056 of the 10,000 delay minutes reported here. The split is drawn from 10,294 reported delay minutes.
Cancellations run at 2.51%, against 1.81% nationally. That is about one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here actually costs
6.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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.
The 781 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 83.1% on time across 717 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.
One caution: this is a thin sample. 717 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
Work out the risk of missing a connection in HPN after this flight
What to do with this
Booking this route
Put together: treat all of this as provisional. 717 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 77.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 693 completed flights over 12 months sit behind that.
Common questions
ATL to HPN questions
How often is ATL to HPN delayed?
Roughly one flight in five arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 22.1% of the 717 flights in this analysis, against 22.4% nationally. Delayed flights are late by about an hour on average.
How reliable is ATL to HPN compared with the rest of the country?
77.9% of flights arrive on time here against a national 77.6%, a difference of half a point 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 HPN?
The 8am–11am departure window is the strongest at 82.2% on time. The 8pm–5am window is the weakest at 73.0%, 9 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 December delays on ATL to HPN?
December is the weakest month at 67.2% on time, compared with 87.9% in September. Across the year that is 21 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
- HPN to ATL — the return legseparate record
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- ATL to LGA, a related route73.4%
- PBI to HPN, a related route73.4%
- ATL to MCO, a related route70.7%
- Delta Air Lines on-time record77.9%
- The US routes with the most cancellations
- The best time of day to fly, according to 7.04 million flight records
Direction matters. ATL to HPN and HPN 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.