Flight number record
OO 5602
SkyWest Airlines · Gunnison to Denver
- Route
- GUC → DEN
- Departs
- 07:00
- Flights
- 328
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5602, 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 5602 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 12 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 328 flights, with a median arrival 15 minutes early.
Set against the rest of the country, OO 5602's record is 12 points better than the US average of 77.3%. That gap is worth roughly 122 fewer late arrivals for every thousand flights.
Key figures
On time
89.5%
Arrivals under 15 minutes late, of 325 completed flights
Avg delay
118 min
Across delayed arrivals only, not all flights
Cancelled
0.91%
National rate is 1.89%
1 hour+ late
5.5%
National rate is 8.3%
These figures cover 328 flights between September 2025 and August 2026. The median arrival is 15 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 5602 flies
OO 5602 flies GUC to DEN without a single fixed slot. Its most common scheduled departure was 07:00, used on 132 of 328 flights, with 07:15 (83 flights) next.
- Departs 07:00132 flights40.2%
- Departs 07:1583 flights25.3%
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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 5602 runs level with that at 89.5%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
OO 5602 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 5602 is 6 points ahead of it. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5602thin sample | 328 | 89.5% | 118 min | 0.91% | A+ |
| 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 5602 quarter by quarter
Quarter by quarter OO 5602 held fairly steady: 86.7% in Jul–Sep 2025, 83.6% in Oct–Dec 2025, 93.1% in Jan–Mar 2026, 92.3% in Apr–Jun 2026 and 87.1% in Jul–Sep 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights86.7%
- Oct–Dec 202555 flights83.6%
- Jan–Mar 202690 flights93.1%
- Apr–Jun 202691 flights92.3%
- Jul–Sep 202662 flights87.1%
Scale runs 75% to 100%.
By weekday, OO 5602 ranged from 84.8% on Saturday to 93.6% on Wednesday. With about 47 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 5602 runs when it is late
OO 5602 often beats the schedule: 163 of 325 completed flights, 50%, arrived 15 minutes or more early. When OO 5602 is late it tends to be very late: 18 of its 34 late arrivals were an hour or more behind, and 14 were two hours or more.
- 15+ min early163 flights50.2%
- Within 15 min128 flights39.4%
- 15–29 min late6 flights1.8%
- 30–59 min late10 flights3.1%
- 1–2 hours late4 flights1.2%
- 2+ hours late14 flights4.3%
Scale runs 0% to 100%.
Share of 325 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 25 departures that left 15 minutes late or more, only 1 made it up before arrival. 10 flights left on time and still arrived late.
The worst days
Worst days for OO 5602
The latest arrival of the period was on 16 August 2026, 7 hours 13 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On four of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 16 August 2026 | 7 hours 13 minutes | Late-arriving aircraft |
| 21 October 2025 | 5 hours 53 minutes | Carrier |
| 13 May 2026 | 5 hours 46 minutes | Carrier |
| 28 February 2026 | 5 hours 19 minutes | Carrier |
| 26 June 2026 | 3 hours 47 minutes | Carrier |
Delay causes
Why OO 5602 runs late
Carrier accounts for 56% of the 4,006 delay minutes carriers reported here, and the remaining four split what is left.
- 56%Carrier
- 31%Late-arriving aircraft
- 7%National Airspace System
- 6%Extreme weather
- 0%Security
The largest share of delay minutes, 56%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,261 of the 4,006 delay minutes reported here. The split is drawn from 4,006 delay minutes reported on OO 5602.
Cancellations sit at 0.91% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
5.5% 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 close to two hours, which a normal layover absorbs.
The same number turns up on two other city pairs in the data, including LAX to PHX (8) and CHA to ORD (1), but none flew often enough under OO 5602 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. 328 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 5602
For a booking, OO 5602 has one of the better records a US domestic flight can show: 89.5% on time and 0.91% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- GUC to DEN, every carrier and departure
- DEN to GUC, the return direction
- SkyWest Airlines 5749 on the same route69.7%
- 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
- Worst months to fly in the US, ranked by the data
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.