Flight number record

OO 5276

SkyWest Airlines · Tulsa to Denver

Route: TUL → DEN
Departs: 11:44
Flights: 333
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5276, 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 5276 lands a B+, 5 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 333 flights, with a median arrival 7 minutes early.

Set against the rest of the country, OO 5276's record is 5 points better than the US average of 77.6%. That gap is worth roughly 46 fewer late arrivals for every thousand flights.

On time

82.2%

Arrivals under 15 minutes late, of 332 completed flights

Avg delay

81 min

Across delayed arrivals only, not all flights

Cancelled

0.30%

National rate is 1.81%

1 hour+ late

8.7%

National rate is 8.1%

These figures cover 333 flights between July 2025 and June 2026. Beyond the headline rate, 8.7% 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 5276 flies

OO 5276 flies TUL to DEN without a single fixed slot. Its most common scheduled departure was 11:44, used on 97 of 333 flights, with 11:53 (93 flights) and 11:51 (68 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:4497 flights29.1%
Departs 11:5393 flights27.9%
Departs 11:5168 flights20.4%

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 11:44 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and OO 5276 runs 3 points better at 82.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 5276 next to TUL to DEN

Every carrier on TUL to DEN combined arrived on time 79.8% of the time across 2,430 flights, so OO 5276 is 2 points ahead of it. SkyWest flew 1,129 flights on the same city pair under all its flight numbers, including this one, and those ran 79.2% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 3 points.

OO 5276 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5276thin sample	333	82.2%	81 min	0.30%	B+
All SkyWest Airlines on TUL–DEN	1,129	79.2%	74 min	0.89%	B+
All carriers on TUL–DEN	2,430	79.8%	64 min	0.99%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5276 quarter by quarter

Quarter by quarter OO 5276 held fairly steady: 79.3% in Jul–Sep 2025, 80.2% in Oct–Dec 2025, 85.1% in Jan–Mar 2026 and 85.5% in Apr–Jun 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights79.3%
Oct–Dec 202591 flights80.2%
Jan–Mar 202688 flights85.1%
Apr–Jun 202662 flights85.5%

Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5276 did best on Friday at 91.7% on time and worst on Monday at 75.0%. Each day rests on about 48 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5276 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 4,762 reported delay minutes.

Late-arriving aircraft
36%
National Airspace System
27%
Carrier
26%
Extreme weather
11%

36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 4,762 reported delay minutes here, that single category outweighs weather by 3 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 4,762 delay minutes reported on OO 5276.

Cancellations are rare at 0.30%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

8.7% 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 a little over an hour, which a normal layover absorbs.

The 541 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The same number turns up on two other city pairs in the data, including ORD to MKE (29) and PIA to ORD (1), but none flew often enough under OO 5276 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to TUL to DEN only.

One caution: this is a thin sample. 333 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 5276

For a booking, read OO 5276 as 82.2% on time with 0.30% cancelled over 333 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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