Carrier performance at one airport
OO→ATL
SkyWest Airlines at Hartsfield-Jackson Atlanta International
- Departures
- 7,416
- Period
- June 2025 to May 2026
- Routes
- 22
- Rank here
- #8 of 12
SkyWest Airlines at Atlanta sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.4%. The late ones land close to two hours behind schedule. That rests on 7,416 flights, of which United Airlines flew 7,431 at 80.3% on time.
Measured against the airport rather than the country, SkyWest Airlines runs 3 points behind the 77.0% weighted average across all carriers at ATL. That is the comparison worth making: every operator here works the same runways, the same airspace and the same weather.
Key figures
On time
73.7%
7,213 completed departures
Avg delay
108 min
Across delayed flights only
Cancelled
2.17%
At ATL, this carrier only
Rank here
#8
Of 12 carriers clearing the floor at ATL
These figures cover 7,416 flights between June 2025 and May 2026. Beyond the headline rate, 12.9% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Against the competition
Every carrier at ATL, ranked
The choice of carrier is not cosmetic here. United Airlines arrives on time 80.3% of the time; Frontier Airlines manages 63.2%. Sample sizes sit next to every figure, because a two-point gap across 19,091 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlines | 7,431 | 80.3% | 83 min | 1.44% | B |
| PSA Airlines | 3,194 | 78.8% | 108 min | 4.82% | B− |
| Delta Air Lines | 241,168 | 78.4% | 60 min | 1.72% | B |
| Republic Airways | 2,717 | 77.0% | 77 min | 4.05% | B− |
| Southwest Airlines | 18,107 | 76.8% | 60 min | 1.17% | B |
| American Airlines | 6,851 | 75.9% | 107 min | 2.07% | B |
| Alaska Airlines | 1,463 | 75.4% | 57 min | 0.75% | B+ |
| SkyWest Airlines (this page) | 7,416 | 73.7% | 108 min | 2.17% | C |
| Envoy Air | 1,153 | 72.7% | 69 min | 3.12% | C− |
| Spirit Airlines | 6,049 | 70.5% | 75 min | 2.89% | C |
| JetBlue Airways | 2,469 | 70.5% | 92 min | 3.52% | C− |
| Frontier Airlines | 19,091 | 63.2% | 83 min | 2.33% | D |
PSA Airlines cancels 4.8% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Route by route
Where SkyWest Airlines flies from ATL
SkyWest Airlines operates 22 routes out of ATL with enough volume to report. Route records inside one carrier at one airport still spread widely, because a short shuttle and a transcontinental have very different exposure to a late inbound.
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| ATL to SHV · Shreveport | 1,516 | 74.0% | 106 min | 2.84% | C |
| ATL to SBN · South Bend | 1,027 | 73.4% | 100 min | 1.75% | C |
| ATL to FWA · Fort Wayne | 697 | 78.8% | 101 min | 2.44% | B |
| ATL to XNA · Bentonville | 637 | 77.1% | 114 min | 2.51% | B |
| ATL to ABY · Albany | 476 | 72.7% | 130 min | 1.47% | C |
| ATL to ASE · Aspen | 449 | 72.8% | 86 min | 1.56% | C |
| ATL to OAJ · Jacksonville | 440 | 73.3% | 105 min | 2.27% | C |
| ATL to MGM · Montgomerythin sample | 322 | 76.4% | 139 min | 0.00% | B+ |
| ATL to CRW · Charlestonthin sample | 262 | 68.5% | 132 min | 4.20% | C− |
| ATL to LFT · Lafayettethin sample | 238 | 76.9% | 96 min | 3.78% | B− |
| ATL to SGF · Springfieldthin sample | 196 | 75.3% | 87 min | 1.02% | B |
| ATL to MOB · Mobilethin sample | 176 | 65.7% | 87 min | 0.57% | C+ |
| ATL to TRI · Bristolthin sample | 174 | 68.6% | 106 min | 0.57% | C+ |
| ATL to FAR · Fargothin sample | 147 | 56.3% | 95 min | 2.72% | D |
| ATL to BMI · Bloomingtonthin sample | 143 | 72.5% | 141 min | 0.00% | C+ |
| ATL to AGS · Augustathin sample | 139 | 75.0% | 174 min | 2.16% | B |
| ATL to DHN · Dothanthin sample | 74 | 59.7% | 122 min | 2.70% | D |
| ATL to ROA · Roanokethin sample | 65 | 58.5% | 79 min | 0.00% | D+ |
| ATL to BTR · Baton Rougethin sample | 53 | 79.2% | 80 min | 9.43% | B− |
| ATL to FAY · Fayettevillethin sample | 48 | 74.5% | 71 min | 2.08% | C |
| ATL to ORD · Chicagothin sample | 41 | 84.6% | 88 min | 4.88% | B− |
| ATL to EVV · Evansvillethin sample | 31 | 80.6% | 205 min | 0.00% | B+ |
Departure window
Best time of day for this operation
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 21 points, against 17 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am33 flights87.5%
- 8am–11am1,986 flights81.6%
- 11am–2pm774 flights71.5%
- 2pm–5pm1,813 flights72.6%
- 5pm–8pm1,028 flights66.6%
- 8pm–5am1,782 flights70.8%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 87.5% of the time, against 66.6% for the evening window. That is 21 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on.
Across the year
Seasonal pattern
June is the worst month at 65.1% on time, 24 points below September, the best at 89.3%. 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.
Delay causes
What holds this operation up
- 71%Carrier
- 19%Extreme weather
- 10%National Airspace System
- 0%Security
- 0%Late-arriving aircraft
Extreme weather accounts for 19% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.0 times the usual weather exposure.
Cancellations sit at 2.17% against a national 1.80%, which is ordinary. Diversions add another 0.57%.
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 12.9% of arrivals land a full hour or more behind schedule, against 8.2% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The sample behind these figures is 7,416 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.
Put together: the calendar is the biggest lever here, not the carrier or the hour. September runs 89.3% on time and June 65.1%, a swing of 24 points. If the dates move at all, move them out of June before you think about anything else.
Common questions
SkyWest Airlines at ATL
How often is SkyWest Airlines at ATL delayed?
About one flight in four arrive at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 26.3% of the 7,416 flights in this analysis, against 22.6% nationally. Delayed flights are late by close to two hours on average.
Which airline is most reliable on SkyWest Airlines at ATL?
United Airlines leads at 80.3% on time across 7,431 flights. Frontier Airlines is at the other end on 63.2%, a gap of 17 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on SkyWest Airlines at ATL?
The 5am–8am departure window is the strongest at 87.5% on time. The 5pm–8pm window is the weakest at 66.6%, 21 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 June delays on SkyWest Airlines at ATL?
June is the weakest month at 65.1% on time, compared with 89.3% in September. Across the year that is 24 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
Source: US DOT Bureau of Transportation Statistics, on-time performance data, June 2025 to May 2026. Updated monthly. How this data is collected.