Flight number record

OO 5755

SkyWest Airlines · Grand Junction to Denver

Route: GJT → DEN
Departs: 18:10
Flights: 362
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5755, 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 5755 draws a D−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 362 flights, with a median arrival 4 minutes late.

The national on-time rate over the same period is 77.6%, so OO 5755 runs 13 points behind the country as a whole. Across a thousand flights that is about 130 extra late arrivals.

On time

64.6%

Arrivals under 15 minutes late, of 350 completed flights

Avg delay

73 min

Across delayed arrivals only, not all flights

Cancelled

3.31%

National rate is 1.81%

1 hour+ late

15.7%

National rate is 8.1%

These figures cover 362 flights between July 2025 and June 2026. Beyond the headline rate, 15.7% 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 5755 flies

OO 5755 flies GJT to DEN without a single fixed slot. Its most common scheduled departure was 18:10, used on 75 of 362 flights, with 18:05 (56 flights) and 18:00 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 18:1075 flights20.7%
Departs 18:0556 flights15.5%
Departs 18:0049 flights13.5%

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 18:10 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and OO 5755 runs 4 points worse at 64.6%. 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 5755 next to GJT to DEN

Every carrier on GJT to DEN combined arrived on time 77.6% of the time across 2,229 flights, so OO 5755 is 13 points behind it. SkyWest flew 1,496 flights on the same city pair under all its flight numbers, including this one, and those ran 75.5% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 14 points.

OO 5755 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5755thin sample	362	64.6%	73 min	3.31%	D−
All SkyWest Airlines on GJT–DEN	1,496	75.5%	78 min	2.01%	B
All carriers on GJT–DEN	2,229	77.6%	75 min	1.48%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5755 quarter by quarter

OO 5755 did not run the same all year. Its best quarter was Oct–Dec 2025 at 78.8% on time and its weakest Jul–Sep 2025 at 55.3%, a swing of 24 points on roughly 91 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 202590 flights55.3%
Oct–Dec 202591 flights78.8%
Jan–Mar 202690 flights66.3%
Apr–Jun 202691 flights58.2%

Scale runs 45% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5755 did best on Wednesday at 73.1% on time and worst on Monday at 52.9%. Each day rests on about 52 flights, so a gap of 20 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5755 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 9,043 reported delay minutes.

Late-arriving aircraft
34%
National Airspace System
30%
Carrier
23%
Extreme weather
13%

Extreme weather accounts for 13% 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 2.1 times the usual weather exposure. The split is drawn from 9,043 delay minutes reported on OO 5755.

Cancellations run at 3.31%, against 1.81% nationally. That is about one flight in 30 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 15.7% 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.

Every one of the 362 flights under OO 5755 in the data flew GJT to DEN. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 362 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 5755

For a booking, the cancellation rate is the figure to plan around on OO 5755: 3.31% of its 362 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures