Flight number record
OO 5026
SkyWest Airlines · Chicago to Johnstown
- Route
- ORD → JST
- Departs
- 21:25
- Flights
- 317
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5026, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
OO 5026 draws a D−. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is about 3.4 hours behind schedule. Build slack into anything you connect to. That rests on 317 flights, with a median arrival 2 minutes late.
The national on-time rate over the same period is 77.3%, so OO 5026 runs 15 points behind the country as a whole. Across a thousand flights that is about 145 extra late arrivals.
Key figures
On time
62.8%
Arrivals under 15 minutes late, of 288 completed flights
Avg delay
207 min
Across delayed arrivals only, not all flights
Cancelled
6.31%
National rate is 1.89%
1 hour+ late
19.4%
National rate is 8.3%
These figures cover 317 flights between September 2025 and August 2026. Beyond the headline rate, 19.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When OO 5026 flies
OO 5026 flies ORD to JST without a single fixed slot. Its most common scheduled departure was 21:25, used on 54 of 317 flights, with 21:18 (52 flights) and 21:50 (47 flights) next.
- Departs 21:2554 flights17.0%
- Departs 21:1852 flights16.4%
- Departs 21:5047 flights14.8%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 21:25 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 5026 runs 7 points worse at 62.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
OO 5026 next to ORD to JST
Every carrier on ORD to JST combined arrived on time 63.7% of the time across 362 flights, so OO 5026 is about level with it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 16 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5026thin sample | 317 | 62.8% | 207 min | 6.31% | D− |
| All SkyWest Airlines on ORD–JSTthin sample | 362 | 63.7% | 191 min | 5.80% | D− |
| All carriers on ORD–JSTthin sample | 362 | 63.7% | 191 min | 5.80% | D− |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5026 quarter by quarter
OO 5026 did not run the same all year. Its best quarter was Apr–Jun 2026 at 71.1% on time and its weakest Oct–Dec 2025 at 53.8%, a swing of 17 points on roughly 79 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 20256 flights—
- Oct–Dec 202589 flights53.8%
- Jan–Mar 202690 flights60.5%
- Apr–Jun 202691 flights71.1%
- Jul–Sep 202641 flights63.2%
Scale runs 45% to 75%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5026 did best on Sunday at 73.2% on time and worst on Friday at 53.5%. Each day rests on about 45 flights, so a gap of 20 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5026 runs when it is late
When OO 5026 is late it tends to be very late: 56 of its 107 late arrivals were an hour or more behind, and 37 were two hours or more.
- 15+ min early59 flights20.5%
- Within 15 min122 flights42.4%
- 15–29 min late21 flights7.3%
- 30–59 min late30 flights10.4%
- 1–2 hours late19 flights6.6%
- 2+ hours late37 flights12.8%
Scale runs 0% to 100%.
Share of 288 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 99 departures that left 15 minutes late or more, only 9 made it up before arrival. In the other direction, 17 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at JST.
The worst days
Worst days for OO 5026
The latest arrival of the period was on 10 August 2026, 15 hours 50 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across August, March, July and January, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 10 August 2026 | 15 hours 50 minutes | National Airspace System |
| 4 March 2026 | 14 hours 10 minutes | Extreme weather |
| 2 March 2026 | 13 hours 35 minutes | Carrier |
| 2 July 2026 | 13 hours 15 minutes | Extreme weather |
| 19 January 2026 | 12 hours 54 minutes | National Airspace System |
Delay causes
Why OO 5026 runs late
Carrier accounts for 42% of the 22,000 delay minutes carriers reported here, and the remaining four split what is left.
- 42%Carrier
- 29%Extreme weather
- 18%National Airspace System
- 10%Late-arriving aircraft
Extreme weather accounts for 29% 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 quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 4.9 times the usual weather exposure. The split is drawn from 22,092 delay minutes reported on OO 5026.
Cancellations run at 6.31%, against 1.89% nationally. That is about one flight in fifteen 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 routes
What a delay on this flight costs
19.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The same number turns up on three other city pairs in the data, including BTM to DEN (24), ORD to RHI (21) and DEN to HYS (1), but none flew often enough under OO 5026 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to JST only.
One caution: this is a thin sample. 317 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.
What to do with this
Booking OO 5026
For a booking, the cancellation rate is the figure to plan around on OO 5026: 6.31% of its 317 scheduled flights did not operate. A late arrival costs about 3.4 hours, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- Chicago O'Hare International (ORD) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- How often a connection fails at the major US hubs
A flight number here means SkyWest Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.