Flight number record

OO 4975

SkyWest Airlines · Dallas-Fort Worth to San Angelo

Route: DFW → SJT
Departs: 16:45
Flights: 273
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4975, 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 4975 sits in the middle of the pack with a B−. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.6%. The late ones land roughly 55 minutes behind schedule. That rests on 273 flights, with a median arrival 7 minutes early.

On time

75.6%

Arrivals under 15 minutes late, of 258 completed flights

Avg delay

53 min

Across delayed arrivals only, not all flights

Cancelled

5.49%

National rate is 1.81%

1 hour+ late

7.8%

National rate is 8.1%

These figures cover 273 flights between July 2025 and June 2026. The median arrival is 7 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.

Schedule

When OO 4975 flies

OO 4975 flies DFW to SJT without a single fixed slot. Its most common scheduled departure was 16:45, used on 132 of 273 flights, with 16:46 (54 flights) and 16:51 (31 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 16:45132 flights48.4%
Departs 16:4654 flights19.8%
Departs 16:5131 flights11.4%

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 16:45 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and OO 4975 runs 3 points better at 75.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 4975 next to DFW to SJT

Every carrier on DFW to SJT combined arrived on time 79.9% of the time across 1,078 flights, so OO 4975 is 4 points behind it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 3 points.

OO 4975 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4975thin sample	273	75.6%	53 min	5.49%	B−
All SkyWest Airlines on DFW–SJT	1,078	79.9%	97 min	4.36%	B−
All carriers on DFW–SJT	1,078	79.9%	97 min	4.36%	B−
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4975 quarter by quarter

Quarter by quarter OO 4975 held fairly steady: 76.1% in Jul–Sep 2025, 76.7% in Oct–Dec 2025 and 71.8% in Jan–Mar 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights76.1%
Oct–Dec 202591 flights76.7%
Jan–Mar 202684 flights71.8%
Apr–Jun 20266 flights—

Scale runs 65% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4975 did best on Wednesday at 81.1% on time and worst on Sunday at 65.8%. Each day rests on about 39 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 4975 runs late

One category carries most of the weight here. Carrier accounts for 61% of the 3,330 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
61%
Late-arriving aircraft
20%
Extreme weather
10%
National Airspace System
8%

The largest share of delay minutes, 61%, 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 2,044 of the 3,330 delay minutes reported here. The split is drawn from 3,330 delay minutes reported on OO 4975.

Cancellations run at 5.49%, against 1.81% nationally. That is roughly one flight in twenty 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

7.8% 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 roughly 55 minutes, which a normal layover absorbs.

OO 4975 is not only a DFW to SJT flight. It also flew SJT to DFW (268 flights, 72.9% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.

One caution: this is a thin sample. 273 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.

Other routes flown as OO 4975
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
SJT to DFWthin sample	268	72.9%	78 min	5.97%	C−

What to do with this

Booking OO 4975

For a booking, the cancellation rate is the figure to plan around on OO 4975: 5.49% of its 273 scheduled flights did not operate. A late arrival costs roughly 55 minutes, 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