Flight number record

OO 4684

SkyWest Airlines · Denver to Santa Fe

Route: DEN → SAF
Departs: 20:40
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4684, 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 4684 lands a B, level with the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 364 flights, with a median arrival 7 minutes early.

On time

78.3%

Arrivals under 15 minutes late, of 355 completed flights

Avg delay

81 min

Across delayed arrivals only, not all flights

Cancelled

1.92%

National rate is 1.81%

1 hour+ late

9.9%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 2026. Beyond the headline rate, 9.9% 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 4684 flies

OO 4684 flies DEN to SAF without a single fixed slot. Its most common scheduled departure was 20:40, used on 104 of 364 flights, with 19:20 (78 flights) and 20:35 (47 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:40104 flights28.6%
Departs 19:2078 flights21.4%
Departs 20:3547 flights12.9%

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 20:40 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and OO 4684 runs 8 points better at 78.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

OO 4684 next to DEN to SAF

Every carrier on DEN to SAF combined arrived on time 81.7% of the time across 1,621 flights, so OO 4684 is 3 points behind it. Across its whole network SkyWest Airlines managed 79.0%, close to this flight's figure.

OO 4684 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4684thin sample	364	78.3%	81 min	1.92%	B
All SkyWest Airlines on DEN–SAF	1,621	81.7%	75 min	1.11%	B
All carriers on DEN–SAF	1,621	81.7%	75 min	1.11%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4684 quarter by quarter

OO 4684 did not run the same all year. Its best quarter was Oct–Dec 2025 at 84.4% on time and its weakest Jul–Sep 2025 at 70.5%, a swing of 14 points on roughly 91 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 flights70.5%
Oct–Dec 202591 flights84.4%
Jan–Mar 202690 flights79.1%
Apr–Jun 202691 flights79.1%

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4684 did best on Wednesday at 86.3% on time and worst on Friday at 70.0%. Each day rests on about 52 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 4684 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 6,197 reported delay minutes.

Late-arriving aircraft
34%
Carrier
33%
National Airspace System
23%
Extreme weather
10%

No single cause dominates. late-arriving aircraft at 34%, carrier at 33% and national airspace system at 23% split the 6,197 reported delay minutes between them. An even spread like this usually means the operation is running close to its designed capacity with no one obvious weak point, and it is the hardest pattern for a traveller to route around. The split is drawn from 6,197 delay minutes reported on OO 4684.

Cancellations sit at 1.92% against a national 1.81%, which is ordinary. Diversions add another 0.55%.

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. 9.9% 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 one other city pair in the data, including OMA to IAH (1), but none flew often enough under OO 4684 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to SAF only.

One caution: this is a thin sample. 364 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 4684

For a booking, read OO 4684 as 78.3% on time with 1.92% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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