Flight number record

OO 5026

SkyWest Airlines · Chicago to Johnstown

Route: ORD → JST
Departs: 21:25
Flights: 325
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 2.9 hours behind schedule. Build slack into anything you connect to. That rests on 325 flights, with a median arrival 3 minutes late.

The national on-time rate over the same period is 77.6%, so OO 5026 runs 16 points behind the country as a whole. Across a thousand flights that is about 156 extra late arrivals.

On time

62.0%

Arrivals under 15 minutes late, of 297 completed flights

Avg delay

176 min

Across delayed arrivals only, not all flights

Cancelled

5.85%

National rate is 1.81%

1 hour+ late

20.5%

National rate is 8.1%

These figures cover 325 flights between July 2025 and June 2026. Beyond the headline rate, 20.5% 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.

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 325 flights, with 21:18 (52 flights) and 21:05 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 21:2554 flights16.6%
Departs 21:1852 flights16.0%
Departs 21:0549 flights15.1%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 70.5%, and OO 5026 runs 9 points worse at 62.0%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

OO 5026 next to ORD to JST

Every carrier on ORD to JST combined arrived on time 63.5% of the time across 362 flights, so OO 5026 is 2 points behind it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 17 points.

OO 5026 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5026thin sample	325	62.0%	176 min	5.85%	D−
All SkyWest Airlines on ORD–JSTthin sample	362	63.5%	167 min	5.25%	D−
All carriers on ORD–JSTthin sample	362	63.5%	167 min	5.25%	D−
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	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 81 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 202555 flights62.3%
Oct–Dec 202589 flights53.8%
Jan–Mar 202690 flights60.5%
Apr–Jun 202691 flights71.1%

Scale runs 45% to 75%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5026 did best on Sunday at 71.4% on time and worst on Friday at 55.6%. Each day rests on about 46 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5026 runs late

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 20,000 reported delay minutes.

Carrier
37%
Extreme weather
29%
Late-arriving aircraft
19%
National Airspace System
16%

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 4.6 times the usual weather exposure. The split is drawn from 19,904 delay minutes reported on OO 5026.

Cancellations run at 5.85%, against 1.81% nationally. That is roughly 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 20.5% 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 same number turns up on two other city pairs in the data, including BTM to DEN (37) 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. 325 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: 5.85% of its 325 scheduled flights did not operate. A late arrival costs about 2.9 hours, but a cancellation costs the day, so leave a later option open.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures