Flight number record

OO 5099

SkyWest Airlines · Cody to Denver

Route: COD → DEN
Departs: 13:54
Flights: 340
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5099, 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 5099 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land close to two hours behind schedule. That rests on 340 flights, with a median arrival 8 minutes early.

The national on-time rate over the same period is 77.3%, so OO 5099 runs 7 points behind the country as a whole. Across a thousand flights that is about 65 extra late arrivals.

On time

70.8%

Arrivals under 15 minutes late, of 325 completed flights

Avg delay

106 min

Across delayed arrivals only, not all flights

Cancelled

1.18%

National rate is 1.89%

1 hour+ late

15.1%

National rate is 8.3%

These figures cover 340 flights between September 2025 and August 2026. Beyond the headline rate, 15.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Schedule

When OO 5099 flies

OO 5099 flies COD to DEN without a single fixed slot. Its most common scheduled departure was 13:54, used on 82 of 340 flights, with 13:45 (52 flights) and 13:33 (48 flights) next.

Departs 13:5482 flights24.1%
Departs 13:4552 flights15.3%
Departs 13:3348 flights14.1%

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 13:54 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and OO 5099 runs 8 points worse at 70.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

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Against the route

OO 5099 next to COD to DEN

Every carrier on COD to DEN combined arrived on time 71.2% of the time across 934 flights, so OO 5099 is about level with it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 8 points.

OO 5099 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5099thin sample	340	70.8%	106 min	1.18%	C
All SkyWest Airlines on COD–DEN	934	71.2%	102 min	1.18%	C
All carriers on COD–DEN	934	71.2%	102 min	1.18%	C
SkyWest Airlines, whole network	855,406	78.7%	88 min	1.79%	B

Across the year

OO 5099 quarter by quarter

OO 5099 did not run the same all year. Its best quarter was Oct–Dec 2025 at 82.0% on time and its weakest Apr–Jun 2026 at 58.4%, a swing of 24 points on roughly 85 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 20256 flights—
Oct–Dec 202591 flights82.0%
Jan–Mar 202690 flights73.9%
Apr–Jun 202691 flights58.4%
Jul–Sep 202662 flights64.2%

Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5099 did best on Tuesday at 82.2% on time and worst on Thursday at 64.4%. Each day rests on about 49 flights, so a gap of 18 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late OO 5099 runs when it is late

OO 5099 often beats the schedule: 120 of 325 completed flights, 37%, arrived 15 minutes or more early. When OO 5099 is late it tends to be very late: 49 of its 95 late arrivals were an hour or more behind, and 22 were two hours or more.

15+ min early120 flights36.9%
Within 15 min110 flights33.8%
15–29 min late18 flights5.5%
30–59 min late28 flights8.6%
1–2 hours late27 flights8.3%
2+ hours late22 flights6.8%

Scale runs 0% to 100%.

Share of 325 completed flights by arrival against schedule.

19 of 100 late departures made up the time and arrived on time, 19% of them. 14 flights left on time and still arrived late.

The worst days

Worst days for OO 5099

The latest arrival of the period was on 21 May 2026, 21 hours 36 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across May, October, February, November and March, with no single month standing out.

The latest arrivals of OO 5099 in the period
Date	Arrived late by	Largest filed cause
21 May 2026	21 hours 36 minutes	Extreme weather
4 October 2025	10 hours 2 minutes	Carrier
5 February 2026	8 hours 29 minutes	Late-arriving aircraft
10 November 2025	7 hours 24 minutes	Carrier
6 March 2026	6 hours 13 minutes	Extreme weather

Delay causes

Why OO 5099 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 10,000 reported delay minutes.

Late-arriving aircraft
39%
Carrier
24%
Extreme weather
23%
National Airspace System
14%
Security
0%

Extreme weather accounts for 23% 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 3.8 times the usual weather exposure. The split is drawn from 10,047 delay minutes reported on OO 5099.

Cancellations sit at 1.18% against a national 1.89%, which is ordinary. Diversions add another 3.24%.

Connections and routes

What a delay on this flight costs

15.1% 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.

The same number turns up on two other city pairs in the data, including JST to IAD (24) and DEN to PIR (20), but none flew often enough under OO 5099 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to COD to DEN only.

One caution: this is a thin sample. 340 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 5099

For a booking, OO 5099 is a flight to put a long connection behind. 15.1% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.

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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures