Flight number record

OO 5227

SkyWest Airlines · Durango to Denver

Route: DRO → DEN
Departs: 18:00
Flights: 323
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 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 C−. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 323 flights, with a median arrival 1 minute late.

The national on-time rate over the same period is 77.3%, so OO 5227 runs 6 points behind the country as a whole. Across a thousand flights that is about 63 extra late arrivals.

On time

71.0%

Arrivals under 15 minutes late, of 310 completed flights

Avg delay

69 min

Across delayed arrivals only, not all flights

Cancelled

4.02%

National rate is 1.89%

1 hour+ late

10.0%

National rate is 8.3%

These figures cover 323 flights between September 2025 and August 2026. Beyond the headline rate, 10.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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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 156 of 323 flights, with 18:05 (117 flights) next.

Departs 18:00156 flights48.3%
Departs 18:05117 flights36.2%

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 18:00 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and OO 5227 runs 3 points better at 71.0%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

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Against the route

OO 5227 next to DRO to DEN

Every carrier on DRO to DEN combined arrived on time 82.5% of the time across 2,201 flights, so OO 5227 is 12 points behind it. SkyWest flew 1,471 flights on the same city pair under all its flight numbers, including this one, and those ran 80.9% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 8 points.

OO 5227 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5227thin sample	323	71.0%	69 min	4.02%	C−
All SkyWest Airlines on DRO–DEN	1,471	80.9%	95 min	1.43%	B
All carriers on DRO–DEN	2,201	82.5%	89 min	1.09%	B
SkyWest Airlines, whole network	855,406	78.7%	88 min	1.79%	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 Jul–Sep 2026 at 51.7%, a swing of 33 points on roughly 81 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%
Jul–Sep 202661 flights51.7%

Scale runs 45% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5227 did best on Tuesday at 88.4% on time and worst on Friday at 56.8%. Each day rests on about 46 flights, so a gap of 32 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late OO 5227 runs when it is late

The 90 late arrivals split 28 under half an hour, 31 between 30 and 60 minutes, and 31 an hour or more.

15+ min early59 flights19.0%
Within 15 min161 flights51.9%
15–29 min late28 flights9.0%
30–59 min late31 flights10.0%
1–2 hours late20 flights6.5%
2+ hours late11 flights3.5%

Scale runs 0% to 100%.

Share of 310 completed flights by arrival against schedule.

13 of 80 late departures made up the time and arrived on time, 16% of them. In the other direction, 23 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at DEN.

The worst days

Worst days for OO 5227

The latest arrival of the period was on 16 July 2026, 15 hours 54 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.

The latest arrivals of OO 5227 in the period
Date	Arrived late by	Largest filed cause
16 July 2026	15 hours 54 minutes	Late-arriving aircraft
1 May 2026	4 hours 57 minutes	Late-arriving aircraft
12 August 2026	3 hours 52 minutes	National Airspace System
13 August 2026	3 hours 44 minutes	National Airspace System
12 June 2026	3 hours 17 minutes	Late-arriving aircraft

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 6,226 reported delay minutes.

Late-arriving aircraft
39%
National Airspace System
29%
Carrier
17%
Extreme weather
15%

Extreme weather accounts for 15% 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 2.4 times the usual weather exposure. The split is drawn from 6,226 delay minutes reported on OO 5227.

Cancellations run at 4.02%, against 1.89% nationally. That is about one flight in 25 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

10.0% 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 ORD to CID (22) and IAH to COS (1), 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. 323 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: 4.02% of its 323 scheduled flights did not operate. A late arrival costs a little over an hour, 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures