Flight number record

OO 3808

SkyWest Airlines · Missoula to Salt Lake City

Route: MSO → SLC
Departs: 18:24
Flights: 340
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 3808, 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 3808 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 77.6%. When something does go wrong the average delay runs roughly 45 minutes. That rests on 340 flights, with a median arrival 8 minutes early.

Set against the rest of the country, OO 3808's record is 13 points better than the US average of 77.6%. That gap is worth roughly 130 fewer late arrivals for every thousand flights.

On time

90.6%

Arrivals under 15 minutes late, of 339 completed flights

Avg delay

43 min

Across delayed arrivals only, not all flights

Cancelled

0.29%

National rate is 1.81%

1 hour+ late

1.8%

National rate is 8.1%

These figures cover 340 flights between July 2025 and June 2026. The median arrival is 8 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.

Schedule

When OO 3808 flies

OO 3808 flies MSO to SLC without a single fixed slot. Its most common scheduled departure was 18:24, used on 66 of 340 flights, with 18:20 (57 flights) and 18:18 (55 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 18:2466 flights19.4%
Departs 18:2057 flights16.8%
Departs 18:1855 flights16.2%

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 18:24 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and OO 3808 runs 22 points better at 90.6%. 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 3808 next to MSO to SLC

Every carrier on MSO to SLC combined arrived on time 90.9% of the time across 1,059 flights, so OO 3808 is about level with it. SkyWest flew 592 flights on the same city pair under all its flight numbers, including this one, and those ran 91.8% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 12 points.

OO 3808 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 3808thin sample	340	90.6%	43 min	0.29%	A+
All SkyWest Airlines on MSO–SLC	592	91.8%	47 min	1.35%	A
All carriers on MSO–SLC	1,059	90.9%	84 min	0.94%	A+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 3808 quarter by quarter

Quarter by quarter OO 3808 held fairly steady: 90.7% in Jul–Sep 2025, 95.3% in Oct–Dec 2025, 87.0% in Jan–Mar 2026 and 89.0% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202586 flights90.7%
Oct–Dec 202586 flights95.3%
Jan–Mar 202677 flights87.0%
Apr–Jun 202691 flights89.0%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 3808 ranged from 85.4% on Wednesday to 93.9% on Sunday. With about 49 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why OO 3808 runs late

One category carries most of the weight here. Carrier accounts for 65% of the 1,375 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
65%
Extreme weather
30%
National Airspace System
6%

Extreme weather accounts for 30% 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 4.7 times the usual weather exposure. The split is drawn from 1,375 delay minutes reported on OO 3808.

Cancellations are rare at 0.29%, 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

Badly late arrivals are rare here: only 1.8% land an hour or more behind schedule, against 8.1% 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 3808 is not only a MSO to SLC flight. It also flew SLC to MSO (340 flights, 90.5% 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. 340 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 3808
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
SLC to MSOthin sample	340	90.5%	42 min	0.29%	A+

What to do with this

Booking OO 3808

For a booking, OO 3808 has one of the better records a US domestic flight can show: 90.6% on time and 0.29% 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures