Flight number record

OO 3620

SkyWest Airlines · Salt Lake City to Bentonville

Route: SLC → XNA
Departs: 13:20
Flights: 361
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 3620, 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 3620 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 50 minutes. That rests on 361 flights, with a median arrival 7 minutes early.

Set against the rest of the country, OO 3620's record is 9 points better than the US average of 77.6%. That gap is worth roughly 88 fewer late arrivals for every thousand flights.

On time

86.4%

Arrivals under 15 minutes late, of 360 completed flights

Avg delay

50 min

Across delayed arrivals only, not all flights

Cancelled

0.28%

National rate is 1.81%

1 hour+ late

4.2%

National rate is 8.1%

These figures cover 361 flights between July 2025 and June 2026. The median arrival is 7 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 3620 flies

OO 3620 flies SLC to XNA without a single fixed slot. Its most common scheduled departure was 13:20, used on 89 of 361 flights, with 13:30 (60 flights) and 13:45 (47 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:2089 flights24.7%
Departs 13:3060 flights16.6%
Departs 13:4547 flights13.0%

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 13:20 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and OO 3620 runs 8 points better at 86.4%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 3620 next to SLC to XNA

Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 7 points.

OO 3620 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 3620thin sample	361	86.4%	50 min	0.28%	A+
All SkyWest Airlines on SLC–XNAthin sample	361	86.4%	50 min	0.28%	A+
All carriers on SLC–XNAthin sample	361	86.4%	50 min	0.28%	A+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 3620 quarter by quarter

OO 3620 did not run the same all year. Its best quarter was Oct–Dec 2025 at 92.1% on time and its weakest Apr–Jun 2026 at 81.3%, a swing of 11 points on roughly 90 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 202591 flights84.6%
Oct–Dec 202589 flights92.1%
Jan–Mar 202690 flights87.6%
Apr–Jun 202691 flights81.3%

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

By weekday, OO 3620 did best on Tuesday at 92.5% on time and worst on Monday at 78.8%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 3620 runs late

One category carries most of the weight here. Carrier accounts for 83% of the 2,448 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
16%
Extreme weather
2%

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 2,021 of the 2,448 delay minutes reported here. The split is drawn from 2,448 delay minutes reported on OO 3620.

Cancellations are rare at 0.28%, 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 4.2% 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.

The 1,004 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

OO 3620 is not only a SLC to XNA flight. It also flew XNA to SLC (305 flights, 88.2% 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. 361 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 3620
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
XNA to SLCthin sample	305	88.2%	70 min	0.33%	A+

What to do with this

Booking OO 3620

For a booking, OO 3620 has one of the better records a US domestic flight can show: 86.4% 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures