Flight number record

OO 5683

SkyWest Airlines · Salt Lake City to Denver

Route: SLC → DEN
Departs: 05:00
Flights: 264
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5683, 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 5683 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 264 flights, with a median arrival 19 minutes early.

Set against the rest of the country, OO 5683's record is 16 points better than the US average of 77.6%. That gap is worth roughly 163 fewer late arrivals for every thousand flights.

On time

93.9%

Arrivals under 15 minutes late, of 264 completed flights

Avg delay

76 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

2.3%

National rate is 8.1%

These figures cover 264 flights between July 2025 and June 2026. The median arrival is 19 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 5683 flies

OO 5683 flies SLC to DEN without a single fixed slot. Its most common scheduled departure was 05:00, used on 67 of 264 flights, with 05:30 (49 flights) and 05:25 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 05:0067 flights25.4%
Departs 05:3049 flights18.6%
Departs 05:2536 flights13.6%

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 05:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 5683 runs 5 points better at 93.9%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

OO 5683 next to SLC to DEN

Every carrier on SLC to DEN combined arrived on time 77.8% of the time across 7,757 flights, so OO 5683 is 16 points ahead of it. SkyWest flew 1,395 flights on the same city pair under all its flight numbers, including this one, and those ran 84.6% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 15 points.

OO 5683 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5683thin sample	264	93.9%	76 min	0.00%	A+
All SkyWest Airlines on SLC–DEN	1,395	84.6%	76 min	0.65%	B+
All carriers on SLC–DEN	7,757	77.8%	61 min	0.55%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5683 quarter by quarter

Quarter by quarter OO 5683 held fairly steady: 95.6% in Jul–Sep 2025, 97.1% in Oct–Dec 2025, 91.8% in Jan–Mar 2026 and 92.3% in Apr–Jun 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202590 flights95.6%
Oct–Dec 202534 flights97.1%
Jan–Mar 202649 flights91.8%
Apr–Jun 202691 flights92.3%

Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5683 did best on Monday at 100.0% on time and worst on Friday at 87.5%. Each day rests on about 38 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5683 runs late

One category carries most of the weight here. Carrier accounts for 70% of the 1,220 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
70%
Late-arriving aircraft
20%
National Airspace System
10%

The largest share of delay minutes, 70%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 859 of the 1,220 delay minutes reported here. The split is drawn from 1,220 delay minutes reported on OO 5683.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 2.3% land an hour or more behind schedule, against 8.1% 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 three other city pairs in the data, including MAF to IAH (34), IAH to MEM (28) and IAH to AUS (4), but none flew often enough under OO 5683 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SLC to DEN only.

One caution: this is a thin sample. 264 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 5683

For a booking, OO 5683 has one of the better records a US domestic flight can show: 93.9% on time and 0.00% cancelled. That is a base rate, not a promise about any single 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