Flight number record

OO 5099

SkyWest Airlines · Cody to Denver

Route: COD → DEN
Departs: 13:45
Flights: 278
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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, 6 points worse than the national rate of 77.6%. The late ones land close to two hours behind schedule. That rests on 278 flights, with a median arrival 10 minutes early.

The national on-time rate over the same period is 77.6%, so OO 5099 runs 6 points behind the country as a whole. Across a thousand flights that is about 55 extra late arrivals.

On time

72.1%

Arrivals under 15 minutes late, of 272 completed flights

Avg delay

113 min

Across delayed arrivals only, not all flights

Cancelled

1.08%

National rate is 1.81%

1 hour+ late

15.1%

National rate is 8.1%

These figures cover 278 flights between July 2025 and June 2026. Beyond the headline rate, 15.1% 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 5099 flies

OO 5099 flies COD to DEN without a single fixed slot. Its most common scheduled departure was 13:45, used on 52 of 278 flights, with 13:33 (48 flights) and 13:54 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:4552 flights18.7%
Departs 13:3348 flights17.3%
Departs 13:5441 flights14.7%

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 13:45 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and OO 5099 runs 7 points worse at 72.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 5099 next to COD to DEN

Every carrier on COD to DEN combined arrived on time 71.6% of the time across 932 flights, so OO 5099 is about level with it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 7 points.

OO 5099 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5099thin sample	278	72.1%	113 min	1.08%	C
All SkyWest Airlines on COD–DEN	932	71.6%	108 min	1.18%	C
All carriers on COD–DEN	932	71.6%	108 min	1.18%	C
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	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 93 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%

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

By weekday, OO 5099 did best on Tuesday at 81.6% on time and worst on Thursday at 63.2%. Each day rests on about 40 flights, so a gap of 18 points is worth noticing but could still narrow in another year.

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 8,590 reported delay minutes.

Late-arriving aircraft
42%
Carrier
25%
Extreme weather
24%
National Airspace System
10%
Security
0%

Extreme weather accounts for 24% 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 8,590 delay minutes reported on OO 5099.

Cancellations sit at 1.08% against a national 1.81%, which is ordinary. Diversions add another 1.08%.

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. 15.1% 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 five other city pairs in the data, including JST to IAD (37), CMX to ORD (31) and ORD to CMX (31), 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. 278 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures