Flight number record

OO 4686

SkyWest Airlines · Little Rock to Denver

Route: LIT → DEN
Departs: 13:35
Flights: 359
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4686, 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 4686 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 11 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 359 flights, with a median arrival 18 minutes early.

Set against the rest of the country, OO 4686's record is 11 points better than the US average of 77.3%. That gap is worth roughly 112 fewer late arrivals for every thousand flights.

On time

88.5%

Arrivals under 15 minutes late, of 357 completed flights

Avg delay

75 min

Across delayed arrivals only, not all flights

Cancelled

0.28%

National rate is 1.89%

1 hour+ late

5.0%

National rate is 8.3%

These figures cover 359 flights between September 2025 and August 2026. The median arrival is 18 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.

Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

Schedule

When OO 4686 flies

OO 4686 flies LIT to DEN without a single fixed slot. Its most common scheduled departure was 13:35, used on 99 of 359 flights, with 13:30 (83 flights) and 13:28 (45 flights) next.

Departs 13:3599 flights27.6%
Departs 13:3083 flights23.1%
Departs 13:2845 flights12.5%

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 13:35 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and OO 4686 runs 10 points better at 88.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

Against the route

OO 4686 next to LIT to DEN

Every carrier on LIT to DEN combined arrived on time 80.3% of the time across 1,572 flights, so OO 4686 is 8 points ahead of it. SkyWest flew 985 flights on the same city pair under all its flight numbers, including this one, and those ran 79.3% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 10 points.

OO 4686 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4686thin sample	359	88.5%	75 min	0.28%	A+
All SkyWest Airlines on LIT–DEN	985	79.3%	77 min	0.61%	B+
All carriers on LIT–DEN	1,572	80.3%	78 min	0.70%	B+
SkyWest Airlines, whole network	855,406	78.7%	88 min	1.79%	B

Across the year

OO 4686 quarter by quarter

OO 4686 did not run the same all year. Its best quarter was Apr–Jun 2026 at 93.3% on time and its weakest Jan–Mar 2026 at 81.8%, a swing of 12 points on roughly 72 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 202530 flights90.0%
Oct–Dec 202588 flights88.6%
Jan–Mar 202689 flights81.8%
Apr–Jun 202691 flights93.3%
Jul–Sep 202661 flights90.2%

Scale runs 75% to 100%.

By weekday, OO 4686 ranged from 82.7% on Monday to 94.2% on Wednesday. With about 51 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.

Arrival by arrival

How late OO 4686 runs when it is late

OO 4686 often beats the schedule: 225 of 357 completed flights, 63%, arrived 15 minutes or more early. The 41 late arrivals split 9 under half an hour, 14 between 30 and 60 minutes, and 18 an hour or more.

15+ min early225 flights63.0%
Within 15 min91 flights25.5%
15–29 min late9 flights2.5%
30–59 min late14 flights3.9%
1–2 hours late11 flights3.1%
2+ hours late7 flights2.0%

Scale runs 0% to 100%.

Share of 357 completed flights by arrival against schedule.

7 of 41 late departures made up the time and arrived on time, 17% of them. Only 7 left on time and still arrived late.

The worst days

Worst days for OO 4686

The latest arrival of the period was on 25 January 2026, 6 hours 23 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in December 2025.

The latest arrivals of OO 4686 in the period
Date	Arrived late by	Largest filed cause
25 January 2026	6 hours 23 minutes	Carrier
19 December 2025	3 hours 11 minutes	Extreme weather
17 February 2026	2 hours 57 minutes	National Airspace System
21 December 2025	2 hours 45 minutes	Carrier
4 December 2025	2 hours 27 minutes	Extreme weather

Delay causes

Why OO 4686 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 3,085 reported delay minutes.

Carrier
38%
Late-arriving aircraft
29%
National Airspace System
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 2.5 times the usual weather exposure. The split is drawn from 3,085 delay minutes reported on OO 4686.

Cancellations are rare at 0.28%, below the national 1.89% 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

5.0% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.

The 771 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.

The same number turns up on four other city pairs in the data, including DEN to MSP (3), ORD to DSM (1) and CVG to ORD (1), but none flew often enough under OO 4686 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LIT to DEN only.

One caution: this is a thin sample. 359 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 4686

For a booking, OO 4686 has one of the better records a US domestic flight can show: 88.5% on time and 0.28% 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