Flight number record
OO 5755
SkyWest Airlines · Grand Junction to Denver
- Route
- GJT → DEN
- Departs
- 18:10
- Flights
- 363
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5755, 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 5755 draws a D. 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 363 flights, with a median arrival 4 minutes late.
The national on-time rate over the same period is 77.3%, so OO 5755 runs 13 points behind the country as a whole. Across a thousand flights that is about 130 extra late arrivals.
Key figures
On time
64.3%
Arrivals under 15 minutes late, of 353 completed flights
Avg delay
73 min
Across delayed arrivals only, not all flights
Cancelled
2.75%
National rate is 1.89%
1 hour+ late
15.3%
National rate is 8.3%
These figures cover 363 flights between September 2025 and August 2026. Beyond the headline rate, 15.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5755 flies
OO 5755 flies GJT to DEN without a single fixed slot. Its most common scheduled departure was 18:10, used on 115 of 363 flights, with 18:05 (43 flights) next.
- Departs 18:10115 flights31.7%
- Departs 18:0543 flights11.8%
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 18:10 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and OO 5755 runs 4 points worse at 64.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
OO 5755 next to GJT to DEN
Every carrier on GJT to DEN combined arrived on time 79.6% of the time across 2,282 flights, so OO 5755 is 15 points behind it. SkyWest flew 1,550 flights on the same city pair under all its flight numbers, including this one, and those ran 77.0% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5755thin sample | 363 | 64.3% | 73 min | 2.75% | D |
| All SkyWest Airlines on GJT–DEN | 1,550 | 77.0% | 80 min | 1.81% | B |
| All carriers on GJT–DEN | 2,282 | 79.6% | 75 min | 1.36% | B |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5755 quarter by quarter
OO 5755 did not run the same all year. Its best quarter was Oct–Dec 2025 at 78.8% on time and its weakest Jul–Sep 2026 at 44.8%, a swing of 34 points on roughly 73 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 flights73.3%
- Oct–Dec 202591 flights78.8%
- Jan–Mar 202690 flights66.3%
- Apr–Jun 202691 flights58.2%
- Jul–Sep 202661 flights44.8%
Scale runs 35% to 85%.
By weekday, OO 5755 did best on Wednesday at 71.2% on time and worst on Monday at 52.9%. Each day rests on about 52 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5755 runs when it is late
The 126 late arrivals split 42 under half an hour, 30 between 30 and 60 minutes, and 54 an hour or more.
- 15+ min early49 flights13.9%
- Within 15 min178 flights50.4%
- 15–29 min late42 flights11.9%
- 30–59 min late30 flights8.5%
- 1–2 hours late34 flights9.6%
- 2+ hours late20 flights5.7%
Scale runs 0% to 100%.
Share of 353 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 100 departures that left 15 minutes late or more, only 9 made it up before arrival. In the other direction, 35 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 5755
The latest arrival of the period was on 26 April 2026, 15 hours 21 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across April, January, September, February and July, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 April 2026 | 15 hours 21 minutes | Late-arriving aircraft |
| 20 January 2026 | 4 hours 39 minutes | Extreme weather |
| 11 September 2025 | 4 hours 18 minutes | Carrier |
| 10 February 2026 | 3 hours 46 minutes | Carrier |
| 8 July 2026 | 2 hours 58 minutes | National Airspace System |
Delay causes
Why OO 5755 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 9,137 reported delay minutes.
- 41%Late-arriving aircraft
- 29%National Airspace System
- 19%Carrier
- 11%Extreme weather
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 9,137 reported delay minutes here, that single category outweighs weather by 4 to one. The split is drawn from 9,137 delay minutes reported on OO 5755.
Cancellations run at 2.75%, against 1.89% nationally. That is roughly one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
15.3% 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.
Every one of the 363 flights under OO 5755 in the data flew GJT to DEN. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 363 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 5755
For a booking, the cancellation rate is the figure to plan around on OO 5755: 2.75% of its 363 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- GJT to DEN, every carrier and departure
- DEN to GJT, the return direction
- SkyWest Airlines 4709 on the same route84.3%
- SkyWest Airlines 4635 on the same route67.6%
- United Airlines 1877 on the same route86.3%
- SkyWest Airlines 4800 on the same route87.4%
- 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
- Why the first flight of the morning is statistically safest
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.