Flight number record
OO 3620
SkyWest Airlines · Salt Lake City to Bentonville
- Route
- SLC → XNA
- Departs
- 13:30
- Flights
- 362
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 lands a B+, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That rests on 362 flights, with a median arrival 6 minutes early.
Set against the rest of the country, OO 3620's record is 6 points better than the US average of 77.3%. That gap is worth roughly 58 fewer late arrivals for every thousand flights.
Key figures
On time
83.1%
Arrivals under 15 minutes late, of 360 completed flights
Avg delay
52 min
Across delayed arrivals only, not all flights
Cancelled
0.55%
National rate is 1.89%
1 hour+ late
5.6%
National rate is 8.3%
These figures cover 362 flights between September 2025 and August 2026. The median arrival is 6 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 3620 flies
OO 3620 flies SLC to XNA without a single fixed slot. Its most common scheduled departure was 13:30, used on 89 of 362 flights, with 13:20 (84 flights) and 17:20 (56 flights) next.
- Departs 13:3089 flights24.6%
- Departs 13:2084 flights23.2%
- Departs 17:2056 flights15.5%
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 13:30 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and OO 3620 runs 5 points better at 83.1%. 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 3620 next to SLC to XNA
Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3620thin sample | 362 | 83.1% | 52 min | 0.55% | B+ |
| All SkyWest Airlines on SLC–XNAthin sample | 362 | 83.1% | 52 min | 0.55% | B+ |
| All carriers on SLC–XNAthin sample | 362 | 83.1% | 52 min | 0.55% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | 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 Jul–Sep 2026 at 67.2%, a swing of 25 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 flights80.0%
- Oct–Dec 202589 flights92.1%
- Jan–Mar 202690 flights87.6%
- Apr–Jun 202691 flights81.3%
- Jul–Sep 202662 flights67.2%
Scale runs 60% to 100%.
By weekday, OO 3620 did best on Saturday at 88.2% on time and worst on Sunday at 75.0%. Each day rests on about 52 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 3620 runs when it is late
The 61 late arrivals split 27 under half an hour, 14 between 30 and 60 minutes, and 20 an hour or more.
- 15+ min early66 flights18.3%
- Within 15 min233 flights64.7%
- 15–29 min late27 flights7.5%
- 30–59 min late14 flights3.9%
- 1–2 hours late12 flights3.3%
- 2+ hours late8 flights2.2%
Scale runs 0% to 100%.
Share of 360 completed flights by arrival against schedule.
6 of 45 late departures made up the time and arrived on time, 13% of them. In the other direction, 22 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at XNA.
The worst days
Worst days for OO 3620
The latest arrival of the period was on 15 January 2026, 2 hours 41 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 January 2026 | 2 hours 41 minutes | Carrier |
| 1 August 2026 | 2 hours 36 minutes | Carrier |
| 7 June 2026 | 2 hours 20 minutes | National Airspace System |
| 14 June 2026 | 2 hours 18 minutes | Carrier |
| 23 February 2026 | 2 hours 17 minutes | Carrier |
Delay causes
Why OO 3620 runs late
Carrier accounts for 79% of the 3,196 delay minutes carriers reported here, and the remaining four split what is left.
- 79%Carrier
- 14%National Airspace System
- 7%Extreme weather
The largest share of delay minutes, 79%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,523 of the 3,196 delay minutes reported here. The split is drawn from 3,196 delay minutes reported on OO 3620.
Cancellations are rare at 0.55%, 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
5.6% 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 roughly 50 minutes, which a normal layover absorbs.
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.
The same number turns up on one other city pair in the data, including XNA to SLC (244), but none flew often enough under OO 3620 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SLC to XNA only.
One caution: this is a thin sample. 362 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 3620
For a booking, read OO 3620 as 83.1% on time with 0.55% cancelled over 362 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- Salt Lake City International (SLC) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- The best time of day to fly, according to 7.05 million flight records
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 ; recomputed monthly. How this data is collected.