Flight number record
OO 5749
SkyWest Airlines · Gunnison to Denver
- Route
- GUC → DEN
- Departs
- 15:20
- Flights
- 265
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 8 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 265 flights, with a median arrival 4 minutes early.
The national on-time rate over the same period is 77.3%, so OO 5749 runs 8 points behind the country as a whole. Across a thousand flights that is about 76 extra late arrivals.
Key figures
On time
69.7%
Arrivals under 15 minutes late, of 261 completed flights
Avg delay
86 min
Across delayed arrivals only, not all flights
Cancelled
1.13%
National rate is 1.89%
1 hour+ late
15.7%
National rate is 8.3%
These figures cover 265 flights between September 2025 and August 2026. Beyond the headline rate, 15.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5749 flies
OO 5749 flies GUC to DEN without a single fixed slot. Its most common scheduled departure was 15:20, used on 112 of 265 flights, with 15:23 (69 flights) and 15:24 (37 flights) next.
- Departs 15:20112 flights42.3%
- Departs 15:2369 flights26.0%
- Departs 15:2437 flights14.0%
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 15:20 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and OO 5749 runs 2 points worse at 69.7%. 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 5749 next to GUC to DEN
Every carrier on GUC to DEN combined arrived on time 83.6% of the time across 994 flights, so OO 5749 is 14 points behind it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5749thin sample | 265 | 69.7% | 86 min | 1.13% | C |
| All SkyWest Airlines on GUC–DEN | 994 | 83.6% | 92 min | 1.01% | B |
| All carriers on GUC–DEN | 994 | 83.6% | 92 min | 1.01% | B |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | 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 56.7%, a swing of 24 points on roughly 53 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 flights56.7%
- Oct–Dec 202538 flights73.7%
- Jan–Mar 202690 flights80.9%
- Apr–Jun 202646 flights65.2%
- Jul–Sep 202661 flights60.3%
Scale runs 50% to 85%.
By weekday, OO 5749 did best on Friday at 81.1% on time and worst on Saturday at 50.0%. Each day rests on about 38 flights, so a gap of 31 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5749 runs when it is late
OO 5749 often beats the schedule: 76 of 261 completed flights, 29%, arrived 15 minutes or more early. When OO 5749 is late it tends to be very late: 41 of its 79 late arrivals were an hour or more behind, and 15 were two hours or more.
- 15+ min early76 flights29.1%
- Within 15 min106 flights40.6%
- 15–29 min late19 flights7.3%
- 30–59 min late19 flights7.3%
- 1–2 hours late26 flights10.0%
- 2+ hours late15 flights5.7%
Scale runs 0% to 100%.
Share of 261 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 62 departures that left 15 minutes late or more, only 3 made it up before arrival. In the other direction, 20 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at DEN.
The worst days
Worst days for OO 5749
The latest arrival of the period was on 25 June 2026, 6 hours 28 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across June, August, May and July, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 25 June 2026 | 6 hours 28 minutes | Carrier |
| 28 August 2026 | 5 hours 49 minutes | National Airspace System |
| 25 May 2026 | 5 hours 37 minutes | Late-arriving aircraft |
| 22 July 2026 | 4 hours 20 minutes | Extreme weather |
| 28 June 2026 | 4 hours 3 minutes | Extreme weather |
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 6,785 reported delay minutes.
- 31%Late-arriving aircraft
- 27%National Airspace System
- 22%Extreme weather
- 19%Carrier
Extreme weather accounts for 22% 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 3.7 times the usual weather exposure. The split is drawn from 6,785 delay minutes reported on OO 5749.
Cancellations sit at 1.13% against a national 1.89%, which is ordinary. Diversions add another 0.38%.
Connections and routes
What a delay on this flight costs
15.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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. 265 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. 15.7% 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.
Related
Where to go next
- GUC to DEN, every carrier and departure
- DEN to GUC, the return direction
- SkyWest Airlines 5602 on the same route89.5%
- Denver International (DEN) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- How often a connection fails at the major US hubs
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 ; recomputed monthly. How this data is collected.