Flight number record

OO 5749

SkyWest Airlines · Gunnison to Denver

Route: GUC → DEN
Departs: 15:23
Flights: 266
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5749, 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 5749 draws a C+. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 266 flights, with a median arrival right on schedule.

The national on-time rate over the same period is 77.6%, so OO 5749 runs 11 points behind the country as a whole. Across a thousand flights that is about 113 extra late arrivals.

On time

66.3%

Arrivals under 15 minutes late, of 264 completed flights

Avg delay

81 min

Across delayed arrivals only, not all flights

Cancelled

0.38%

National rate is 1.81%

1 hour+ late

18.6%

National rate is 8.1%

These figures cover 266 flights between July 2025 and June 2026. Beyond the headline rate, 18.6% 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 5749 flies

OO 5749 flies GUC to DEN without a single fixed slot. Its most common scheduled departure was 15:23, used on 82 of 266 flights, with 15:20 (72 flights) and 15:27 (48 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:2382 flights30.8%
Departs 15:2072 flights27.1%
Departs 15:2748 flights18.0%

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 15:23 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and OO 5749 runs 6 points worse at 66.3%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 5749 next to GUC to DEN

Every carrier on GUC to DEN combined arrived on time 80.6% of the time across 995 flights, so OO 5749 is 14 points behind it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 13 points.

OO 5749 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5749thin sample	266	66.3%	81 min	0.38%	C+
All SkyWest Airlines on GUC–DEN	995	80.6%	85 min	0.90%	B+
All carriers on GUC–DEN	995	80.6%	85 min	0.90%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5749 quarter by quarter

OO 5749 did not run the same all year. Its best quarter was Jan–Mar 2026 at 80.9% on time and its weakest Jul–Sep 2025 at 49.5%, a swing of 31 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 202592 flights49.5%
Oct–Dec 202538 flights73.7%
Jan–Mar 202690 flights80.9%
Apr–Jun 202646 flights65.2%

Scale runs 40% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5749 did best on Sunday at 78.9% on time and worst on Saturday at 48.7%. Each day rests on about 38 flights, so a gap of 30 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5749 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 7,177 reported delay minutes.

Late-arriving aircraft
34%
National Airspace System
29%
Carrier
22%
Extreme weather
15%

Extreme weather accounts for 15% 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 2.5 times the usual weather exposure. The split is drawn from 7,177 delay minutes reported on OO 5749.

Cancellations are rare at 0.38%, 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 18.6% 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 three other city pairs in the data, including PIT to ORD (5), DAY to ORD (3) and SDF to ORD (1), but none flew often enough under OO 5749 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to GUC to DEN only.

One caution: this is a thin sample. 266 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 5749

For a booking, OO 5749 is a flight to put a long connection behind. 18.6% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.

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