Flight number record

OO 5109

SkyWest Airlines · Salina to Denver

Route: SLN → DEN
Departs: 06:30
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5109, 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 5109 earns a B+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 6 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 2.3 hours. That rests on 364 flights, with a median arrival 10 minutes early.

Set against the rest of the country, OO 5109's record is 6 points better than the US average of 77.6%. That gap is worth roughly 64 fewer late arrivals for every thousand flights.

On time

84.0%

Arrivals under 15 minutes late, of 362 completed flights

Avg delay

139 min

Across delayed arrivals only, not all flights

Cancelled

0.27%

National rate is 1.81%

1 hour+ late

10.2%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 2026. Beyond the headline rate, 10.2% 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 5109 flies

OO 5109 flies SLN to DEN without a single fixed slot. Its most common scheduled departure was 06:30, used on 133 of 364 flights, with 06:25 (65 flights) and 06:20 (54 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:30133 flights36.5%
Departs 06:2565 flights17.9%
Departs 06:2054 flights14.8%

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 06:30 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 5109 runs 5 points worse at 84.0%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

OO 5109 next to SLN to DEN

Every carrier on SLN to DEN combined arrived on time 83.7% of the time across 365 flights, so OO 5109 is about level with it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 5 points.

OO 5109 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5109thin sample	364	84.0%	139 min	0.27%	B+
All SkyWest Airlines on SLN–DEN	365	83.7%	137 min	0.27%	B+
All carriers on SLN–DEN	365	83.7%	137 min	0.27%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5109 quarter by quarter

OO 5109 did not run the same all year. Its best quarter was Apr–Jun 2026 at 93.4% on time and its weakest Oct–Dec 2025 at 68.5%, a swing of 25 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 202592 flights84.4%
Oct–Dec 202592 flights68.5%
Jan–Mar 202689 flights89.9%
Apr–Jun 202691 flights93.4%

Scale runs 60% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5109 did best on Friday at 96.2% on time and worst on Monday at 71.2%. Each day rests on about 52 flights, so a gap of 25 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5109 runs late

One category carries most of the weight here. Carrier accounts for 83% of the 8,076 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
83%
National Airspace System
8%
Extreme weather
6%
Late-arriving aircraft
3%

The largest share of delay minutes, 83%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 6,681 of the 8,076 delay minutes reported here. The split is drawn from 8,076 delay minutes reported on OO 5109.

Cancellations are rare at 0.27%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

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. 10.2% 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 two other city pairs in the data, including DEN to BFF (25) and DEN to CYS (2), but none flew often enough under OO 5109 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SLN to DEN only.

One caution: this is a thin sample. 364 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 5109

For a booking, read OO 5109 as 84.0% on time with 0.27% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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