Flight number record
OO 4704
SkyWest Airlines · Denver to Grand Junction
- Route
- DEN → GJT
- Departs
- 09:35
- Flights
- 337
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4704, 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 4704 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 10 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 50 minutes. That rests on 337 flights, with a median arrival 9 minutes early.
Set against the rest of the country, OO 4704's record is 10 points better than the US average of 77.3%. That gap is worth roughly 103 fewer late arrivals for every thousand flights.
Key figures
On time
87.6%
Arrivals under 15 minutes late, of 330 completed flights
Avg delay
50 min
Across delayed arrivals only, not all flights
Cancelled
2.08%
National rate is 1.89%
1 hour+ late
3.3%
National rate is 8.3%
These figures cover 337 flights between September 2025 and August 2026. The median arrival is 9 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 4704 flies
OO 4704 flies DEN to GJT without a single fixed slot. Its most common scheduled departure was 09:35, used on 210 of 337 flights.
- Departs 09:35210 flights62.3%
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 09:35 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 4704 runs 4 points better at 87.6%. 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 4704 next to DEN to GJT
Every carrier on DEN to GJT combined arrived on time 79.9% of the time across 2,282 flights, so OO 4704 is 8 points ahead of it. SkyWest flew 1,550 flights on the same city pair under all its flight numbers, including this one, and those ran 80.9% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4704thin sample | 337 | 87.6% | 50 min | 2.08% | A |
| All SkyWest Airlines on DEN–GJT | 1,550 | 80.9% | 70 min | 1.87% | B |
| All carriers on DEN–GJT | 2,282 | 79.9% | 67 min | 1.31% | B |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4704 quarter by quarter
OO 4704 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Apr–Jun 2026 at 81.0%, a swing of 16 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 flights96.7%
- Oct–Dec 202592 flights93.1%
- Jan–Mar 202678 flights82.9%
- Apr–Jun 202684 flights81.0%
- Jul–Sep 202653 flights90.6%
Scale runs 75% to 100%.
By weekday, OO 4704 did best on Saturday at 94.3% on time and worst on Wednesday at 77.8%. Each day rests on about 48 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4704 runs when it is late
OO 4704 often beats the schedule: 102 of 330 completed flights, 31%, arrived 15 minutes or more early. The 41 late arrivals split 16 under half an hour, 14 between 30 and 60 minutes, and 11 an hour or more.
- 15+ min early102 flights30.9%
- Within 15 min187 flights56.7%
- 15–29 min late16 flights4.8%
- 30–59 min late14 flights4.2%
- 1–2 hours late9 flights2.7%
- 2+ hours late2 flights0.6%
Scale runs 0% to 100%.
Share of 330 completed flights by arrival against schedule.
8 of 43 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 4704
The latest arrival of the period was on 27 October 2025, 2 hours 14 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across October, January, February, June and March, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 October 2025 | 2 hours 14 minutes | Carrier |
| 3 January 2026 | 2 hours | Extreme weather |
| 20 February 2026 | 1 hour 53 minutes | Extreme weather |
| 25 June 2026 | 1 hour 52 minutes | Late-arriving aircraft |
| 2 March 2026 | 1 hour 44 minutes | Carrier |
Delay causes
Why OO 4704 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 2,033 reported delay minutes.
- 41%Carrier
- 35%Late-arriving aircraft
- 11%National Airspace System
- 10%Extreme weather
- 2%Security
35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,033 reported delay minutes here, that single category outweighs weather by 3 to one. The split is drawn from 2,033 delay minutes reported on OO 4704.
Cancellations sit at 2.08% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.3% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The same number turns up on four other city pairs in the data, including LAX to SBA (12), IAH to RAP (6) and DEN to CHA (3), but none flew often enough under OO 4704 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to GJT only.
One caution: this is a thin sample. 337 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 4704
For a booking, read OO 4704 as 87.6% on time with 2.08% cancelled over 337 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to GJT, every carrier and departure
- GJT to DEN, the return direction
- SkyWest Airlines 4770 on the same route69.7%
- SkyWest Airlines 5488 on the same route86.1%
- United Airlines 1714 on the same route86.6%
- United Airlines 431 on the same route69.1%
- SkyWest Airlines 5240 on the same route78.0%
- 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.