Carrier performance at one airport
OO→ATL
SkyWest Airlines at Hartsfield-Jackson Atlanta International
- Departures
- 7,222
- Period
- July 2025 to June 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, 3 points worse than the national rate of 77.6%. The late ones land close to two hours behind schedule. That rests on 7,222 flights, of which United Airlines flew 7,532 at 80.3% on time.
Measured against the airport rather than the country, SkyWest Airlines runs 4 points behind the 78.4% 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
74.7%
7,022 completed departures
Avg delay
106 min
Across delayed flights only
Cancelled
2.26%
At ATL, this carrier only
Rank here
#8
Of 12 carriers clearing the floor at ATL
These figures cover 7,222 flights between July 2025 and June 2026. Beyond the headline rate, 12.1% 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 64.5%. Sample sizes sit next to every figure, because a two-point gap across 19,734 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlines | 7,532 | 80.3% | 83 min | 1.47% | B |
| Delta Air Lines | 240,801 | 80.0% | 59 min | 1.60% | B |
| PSA Airlines | 3,218 | 79.4% | 109 min | 4.72% | B− |
| Alaska Airlines | 1,433 | 77.1% | 56 min | 0.77% | B+ |
| Southwest Airlines | 17,795 | 77.1% | 58 min | 1.15% | B |
| Republic Airways | 2,880 | 77.0% | 78 min | 4.24% | B− |
| American Airlines | 6,810 | 76.4% | 102 min | 2.10% | B |
| SkyWest Airlines (this page) | 7,222 | 74.7% | 106 min | 2.26% | C |
| Envoy Air | 1,112 | 73.2% | 69 min | 2.61% | C |
| Spirit Airlines | 5,230 | 71.5% | 75 min | 3.14% | C− |
| JetBlue Airways | 2,575 | 70.7% | 89 min | 3.30% | C− |
| Frontier Airlines | 19,734 | 64.5% | 82 min | 2.15% | D |
PSA Airlines cancels 4.7% 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 | 1,515 | 75.2% | 106 min | 2.64% | B |
| ATL to SBN · South Bend | 1,027 | 74.2% | 104 min | 1.85% | C |
| ATL to XNA · Bentonville | 720 | 77.4% | 108 min | 2.36% | B |
| ATL to FWA · Fort Wayne | 610 | 80.4% | 108 min | 2.79% | B |
| ATL to OAJ · Jacksonville | 532 | 75.0% | 103 min | 2.26% | B |
| ATL to ASE · Aspen | 450 | 72.7% | 81 min | 1.56% | C |
| ATL to ABY · Albany | 395 | 75.5% | 125 min | 1.77% | B |
| ATL to MGM · Montgomerythin sample | 249 | 81.5% | 147 min | 0.00% | B+ |
| ATL to CRW · Charlestonthin sample | 243 | 68.6% | 110 min | 4.53% | C− |
| ATL to LFT · Lafayettethin sample | 203 | 79.4% | 106 min | 4.43% | B− |
| ATL to FAR · Fargothin sample | 177 | 57.6% | 94 min | 2.26% | D |
| ATL to MOB · Mobilethin sample | 175 | 65.5% | 87 min | 0.57% | C+ |
| ATL to TRI · Bristolthin sample | 152 | 70.9% | 107 min | 0.00% | C+ |
| ATL to SGF · Springfieldthin sample | 149 | 76.4% | 82 min | 0.67% | B+ |
| ATL to BMI · Bloomingtonthin sample | 138 | 72.3% | 141 min | 0.00% | C+ |
| ATL to AGS · Augustathin sample | 113 | 76.4% | 194 min | 2.65% | B |
| ATL to FAY · Fayettevillethin sample | 71 | 73.1% | 65 min | 4.23% | C− |
| ATL to ROA · Roanokethin sample | 67 | 59.7% | 79 min | 0.00% | D+ |
| ATL to DHN · Dothanthin sample | 55 | 66.0% | 120 min | 3.64% | C− |
| ATL to BTR · Baton Rougethin sample | 50 | 80.0% | 87 min | 10.00% | B− |
| ATL to ORD · Chicagothin sample | 40 | 84.2% | 88 min | 5.00% | 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 20 points, against 16 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–11am1,923 flights81.2%
- 11am–2pm775 flights71.8%
- 2pm–5pm1,737 flights74.5%
- 5pm–8pm1,059 flights67.7%
- 8pm–5am1,695 flights73.3%
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 67.7% for the evening window. That is 20 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 1,923 flights scheduled in it.
Across the year
Seasonal pattern
September is the best month on the calendar at 89.3% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. July was the busiest month here, with 775 flights.
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 3.1 times the usual weather exposure. The split is drawn from 187,985 reported delay minutes.
Cancellations sit at 2.26% against a national 1.81%, which is ordinary. Diversions add another 0.51%.
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 12.1% of arrivals land a full hour or more behind schedule, against 8.1% 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 7,222 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 May 66.5%, a swing of 23 points. If the dates move at all, move them out of May before you think about anything else. 7,022 completed flights over 12 months sit behind that.
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 25.3% of the 7,222 flights in this analysis, against 22.4% 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 7,532 flights. Frontier Airlines is at the other end on 64.5%, a gap of 16 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 67.7%, 20 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 May delays on SkyWest Airlines at ATL?
May is the weakest month at 66.5% on time, compared with 89.3% in September. Across the year that is 23 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, July 2025 to June 2026. Updated monthly. How this data is collected.