Flight number record

OO 5227

SkyWest Airlines · Durango to Denver

Route: DRO → DEN
Departs: 18:00
Flights: 262
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5227, 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 5227 sits in the middle of the pack with a B−. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.6%. The late ones land roughly 55 minutes behind schedule. That rests on 262 flights, with a median arrival 1 minute early.

On time

75.6%

Arrivals under 15 minutes late, of 250 completed flights

Avg delay

53 min

Across delayed arrivals only, not all flights

Cancelled

4.58%

National rate is 1.81%

1 hour+ late

6.8%

National rate is 8.1%

These figures cover 262 flights between July 2025 and June 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.

Schedule

When OO 5227 flies

OO 5227 flies DRO to DEN without a single fixed slot. Its most common scheduled departure was 18:00, used on 135 of 262 flights, with 18:05 (77 flights) and 17:55 (31 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 18:00135 flights51.5%
Departs 18:0577 flights29.4%
Departs 17:5531 flights11.8%

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 18:00 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and OO 5227 runs 7 points better at 75.6%. 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 5227 next to DRO to DEN

Every carrier on DRO to DEN combined arrived on time 81.2% of the time across 2,192 flights, so OO 5227 is 6 points behind it. SkyWest flew 1,461 flights on the same city pair under all its flight numbers, including this one, and those ran 80.1% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 3 points.

OO 5227 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5227thin sample	262	75.6%	53 min	4.58%	B−
All SkyWest Airlines on DRO–DEN	1,461	80.1%	94 min	1.57%	B
All carriers on DRO–DEN	2,192	81.2%	87 min	1.23%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5227 quarter by quarter

OO 5227 did not run the same all year. Its best quarter was Jan–Mar 2026 at 85.1% on time and its weakest Apr–Jun 2026 at 69.2%, a swing of 16 points on roughly 87 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 202575 flights74.2%
Jan–Mar 202690 flights85.1%
Apr–Jun 202691 flights69.2%

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

By weekday, OO 5227 did best on Tuesday at 88.6% on time and worst on Friday at 68.6%. Each day rests on about 37 flights, so a gap of 20 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5227 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 3,259 reported delay minutes.

Late-arriving aircraft
40%
Carrier
27%
Extreme weather
17%
National Airspace System
16%

Extreme weather accounts for 17% 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 2.8 times the usual weather exposure. The split is drawn from 3,259 delay minutes reported on OO 5227.

Cancellations run at 4.58%, against 1.81% nationally. That is roughly one flight in twenty cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and routes

What a delay on this flight costs

6.8% 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 roughly 55 minutes, which a normal layover absorbs.

The same number turns up on four other city pairs in the data, including ORD to PIA (31), ORD to CID (27) and MSN to ORD (18), but none flew often enough under OO 5227 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DRO to DEN only.

One caution: this is a thin sample. 262 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 5227

For a booking, the cancellation rate is the figure to plan around on OO 5227: 4.58% of its 262 scheduled flights did not operate. A late arrival costs roughly 55 minutes, but a cancellation costs the day, so leave a later option open.

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