Flight number record

OO 5276

SkyWest Airlines · Tulsa to Denver

Route: TUL → DEN
Departs: 11:44
Flights: 333
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 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 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 333 flights, with a median arrival 10 minutes early.

Set against the rest of the country, OO 5276's record is 8 points better than the US average of 77.3%. That gap is worth roughly 79 fewer late arrivals for every thousand flights.

On time

85.2%

Arrivals under 15 minutes late, of 332 completed flights

Avg delay

87 min

Across delayed arrivals only, not all flights

Cancelled

0.30%

National rate is 1.89%

1 hour+ late

7.8%

National rate is 8.3%

These figures cover 333 flights between September 2025 and August 2026. The median arrival is 10 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.

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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 159 of 333 flights, with 11:51 (55 flights) and 11:53 (44 flights) next.

Departs 11:44159 flights47.7%
Departs 11:5155 flights16.5%
Departs 11:5344 flights13.2%

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 11:44 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and OO 5276 runs 7 points better at 85.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

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Against the route

OO 5276 next to TUL to DEN

Every carrier on TUL to DEN combined arrived on time 80.4% of the time across 2,474 flights, so OO 5276 is 5 points ahead of it. SkyWest flew 1,173 flights on the same city pair under all its flight numbers, including this one, and those ran 79.9% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 7 points.

OO 5276 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5276thin sample	333	85.2%	87 min	0.30%	A+
All SkyWest Airlines on TUL–DEN	1,173	79.9%	82 min	0.94%	B+
All carriers on TUL–DEN	2,474	80.4%	68 min	1.05%	B
SkyWest Airlines, whole network	855,406	78.7%	88 min	1.79%	B

Across the year

OO 5276 quarter by quarter

OO 5276 did not run the same all year. Its best quarter was Jul–Sep 2026 at 91.9% on time and its weakest Oct–Dec 2025 at 80.2%, a swing of 12 points on roughly 67 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 202530 flights86.7%
Oct–Dec 202591 flights80.2%
Jan–Mar 202688 flights85.1%
Apr–Jun 202662 flights85.5%
Jul–Sep 202662 flights91.9%

Scale runs 70% to 95%.

By weekday, OO 5276 ranged from 80.9% on Wednesday to 91.7% on Friday. With about 48 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.

Arrival by arrival

How late OO 5276 runs when it is late

OO 5276 often beats the schedule: 125 of 332 completed flights, 38%, arrived 15 minutes or more early. When OO 5276 is late it tends to be very late: 26 of its 49 late arrivals were an hour or more behind, and 12 were two hours or more.

15+ min early125 flights37.7%
Within 15 min158 flights47.6%
15–29 min late14 flights4.2%
30–59 min late9 flights2.7%
1–2 hours late14 flights4.2%
2+ hours late12 flights3.6%

Scale runs 0% to 100%.

Share of 332 completed flights by arrival against schedule.

10 of 53 late departures made up the time and arrived on time, 19% of them. Only 6 left on time and still arrived late.

The worst days

Worst days for OO 5276

The latest arrival of the period was on 29 November 2025, 7 hours 47 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across November, September, March and December, with no single month standing out.

The latest arrivals of OO 5276 in the period
Date	Arrived late by	Largest filed cause
29 November 2025	7 hours 47 minutes	National Airspace System
13 September 2025	5 hours 28 minutes	Extreme weather
7 March 2026	3 hours 41 minutes	Carrier
12 March 2026	3 hours 37 minutes	National Airspace System
31 December 2025	3 hours 33 minutes	Late-arriving aircraft

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 4,257 reported delay minutes.

Late-arriving aircraft
40%
National Airspace System
29%
Carrier
20%
Extreme weather
11%

Extreme weather accounts for 11% 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 1.9 times the usual weather exposure. The split is drawn from 4,257 delay minutes reported on OO 5276.

Cancellations are rare at 0.30%, below the national 1.89% 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

7.8% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, 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.

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, OO 5276 has one of the better records a US domestic flight can show: 85.2% on time and 0.30% cancelled. That is a base rate, not a promise about any single 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures