Flight number record

OO 4449

SkyWest Airlines · Salt Lake City to Colorado Springs

Route: SLC → COS
Departs: 15:51
Flights: 251
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4449, 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 4449 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 45 minutes. That rests on 251 flights, with a median arrival 10 minutes early.

Set against the rest of the country, OO 4449's record is 13 points better than the US average of 77.3%. That gap is worth roughly 131 fewer late arrivals for every thousand flights.

On time

90.4%

Arrivals under 15 minutes late, of 250 completed flights

Avg delay

46 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.89%

1 hour+ late

2.4%

National rate is 8.3%

These figures cover 251 flights between September 2025 and August 2026. The median arrival is 10 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

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Schedule

When OO 4449 flies

OO 4449 flies SLC to COS without a single fixed slot. Its most common scheduled departure was 15:51, used on 56 of 251 flights, with 09:31 (51 flights) and 09:40 (36 flights) next.

Departs 15:5156 flights22.3%
Departs 09:3151 flights20.3%
Departs 09:4036 flights14.3%

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 15:51 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and OO 4449 runs 19 points better at 90.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

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Against the route

OO 4449 next to SLC to COS

Every carrier on SLC to COS combined arrived on time 91.9% of the time across 721 flights, so OO 4449 is 2 points behind it. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 12 points.

OO 4449 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4449thin sample	251	90.4%	46 min	0.00%	A+
All SkyWest Airlines on SLC–COS	721	91.9%	50 min	0.14%	A+
All carriers on SLC–COS	721	91.9%	50 min	0.14%	A+
SkyWest Airlines, whole network	855,406	78.7%	88 min	1.79%	B

Across the year

OO 4449 quarter by quarter

OO 4449 did not run the same all year. Its best quarter was Jan–Mar 2026 at 94.4% on time and its weakest Jul–Sep 2026 at 83.6%, a swing of 11 points on roughly 84 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.

Oct–Dec 20259 flights—
Jan–Mar 202689 flights94.4%
Apr–Jun 202691 flights93.4%
Jul–Sep 202662 flights83.6%

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4449 did best on Wednesday at 97.1% on time and worst on Friday at 83.3%. Each day rests on about 36 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late OO 4449 runs when it is late

OO 4449 often beats the schedule: 75 of 250 completed flights, 30%, arrived 15 minutes or more early. The 24 late arrivals split 10 under half an hour, 8 between 30 and 60 minutes, and 6 an hour or more.

15+ min early75 flights30.0%
Within 15 min151 flights60.4%
15–29 min late10 flights4.0%
30–59 min late8 flights3.2%
1–2 hours late5 flights2.0%
2+ hours late1 flights0.4%

Scale runs 0% to 100%.

Share of 250 completed flights by arrival against schedule.

4 of 21 late departures made up the time and arrived on time, 19% of them. 7 flights left on time and still arrived late.

The worst days

Worst days for OO 4449

The latest arrival of the period was on 2 August 2026, 2 hours 21 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.

The latest arrivals of OO 4449 in the period
Date	Arrived late by	Largest filed cause
2 August 2026	2 hours 21 minutes	Carrier
27 January 2026	1 hour 52 minutes	Carrier
13 July 2026	1 hour 31 minutes	Carrier
20 June 2026	1 hour 15 minutes	Carrier
11 January 2026	1 hour 3 minutes	Carrier

Delay causes

Why OO 4449 runs late

Carrier accounts for 77% of the 1,091 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
77%
National Airspace System
12%
Extreme weather
11%

The largest share of delay minutes, 77%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 840 of the 1,091 delay minutes reported here. The split is drawn from 1,091 delay minutes reported on OO 4449.

Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 2.4% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

OO 4449 is not only a SLC to COS flight. It also flew COS to SLC (250 flights, 88.0% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.

One caution: this is a thin sample. 251 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.

Other routes flown as OO 4449
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
COS to SLCthin sample	250	88.0%	64 min	0.00%	A+

What to do with this

Booking OO 4449

For a booking, OO 4449 has one of the better records a US domestic flight can show: 90.4% on time and 0.00% cancelled. That is a base rate, not a promise about any single 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures