Flight number record

OO 5643

SkyWest Airlines · Denver to Santa Fe

Route: DEN → SAF
Departs: 15:50
Flights: 321
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5643, 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 5643 lands a B, 3 points better than 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 321 flights, with a median arrival 7 minutes early.

On time

80.1%

Arrivals under 15 minutes late, of 316 completed flights

Avg delay

75 min

Across delayed arrivals only, not all flights

Cancelled

1.25%

National rate is 1.81%

1 hour+ late

7.9%

National rate is 8.1%

These figures cover 321 flights between July 2025 and June 2026. The median arrival is 7 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.

Schedule

When OO 5643 flies

OO 5643 flies DEN to SAF without a single fixed slot. Its most common scheduled departure was 15:50, used on 86 of 321 flights, with 15:49 (37 flights) and 15:36 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:5086 flights26.8%
Departs 15:4937 flights11.5%
Departs 15:3637 flights11.5%

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 15:50 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and OO 5643 runs 8 points better at 80.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 5643 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 5643 is 2 points behind it. Across its whole network SkyWest Airlines managed 79.0%, close to this flight's figure.

OO 5643 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5643thin sample	321	80.1%	75 min	1.25%	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 5643 quarter by quarter

OO 5643 did not run the same all year. Its best quarter was Oct–Dec 2025 at 86.4% on time and its weakest Jul–Sep 2025 at 68.6%, a swing of 18 points on roughly 80 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 202572 flights68.6%
Oct–Dec 202568 flights86.4%
Jan–Mar 202690 flights78.9%
Apr–Jun 202691 flights85.6%

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

By weekday, OO 5643 did best on Saturday at 93.0% on time and worst on Wednesday at 73.9%. Each day rests on about 46 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5643 runs late

One category carries most of the weight here. Carrier accounts for 55% of the 4,696 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
55%
Extreme weather
20%
Late-arriving aircraft
13%
National Airspace System
12%

Extreme weather accounts for 20% 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 3.2 times the usual weather exposure. The split is drawn from 4,696 delay minutes reported on OO 5643.

Cancellations sit at 1.25% against a national 1.81%, which is ordinary. Diversions add another 0.31%.

Connections and routes

What a delay on this flight costs

7.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.

The same number turns up on two other city pairs in the data, including ORD to CAK (18) and ORD to SYR (16), but none flew often enough under OO 5643 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. 321 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 5643

For a booking, read OO 5643 as 80.1% on time with 1.25% cancelled over 321 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