Flight number record
OO 5393
SkyWest Airlines · Huntsville to Denver
- Route
- HSV → DEN
- Departs
- 15:45
- Flights
- 364
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5393, 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 5393 lands a B+, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 364 flights, with a median arrival 8 minutes early.
Key figures
On time
79.5%
Arrivals under 15 minutes late, of 361 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.81%
1 hour+ late
8.3%
National rate is 8.1%
These figures cover 364 flights between July 2025 and June 2026. Beyond the headline rate, 8.3% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When OO 5393 flies
OO 5393 flies HSV to DEN without a single fixed slot. Its most common scheduled departure was 15:45, used on 95 of 364 flights, with 15:35 (73 flights) and 15:36 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 15:4595 flights26.1%
- Departs 15:3573 flights20.1%
- Departs 15:3637 flights10.2%
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 15:45 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and OO 5393 runs 7 points better at 79.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
OO 5393 next to HSV to DEN
Every carrier on HSV to DEN combined arrived on time 83.7% of the time across 729 flights, so OO 5393 is 4 points behind it. Across its whole network SkyWest Airlines managed 79.0%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5393thin sample | 364 | 79.5% | 75 min | 0.00% | B+ |
| All SkyWest Airlines on HSV–DEN | 729 | 83.7% | 75 min | 0.00% | B+ |
| All carriers on HSV–DEN | 729 | 83.7% | 75 min | 0.00% | B+ |
| SkyWest Airlines, whole network | 852,935 | 79.0% | 88 min | 1.77% | B |
Across the year
OO 5393 quarter by quarter
OO 5393 did not run the same all year. Its best quarter was Oct–Dec 2025 at 87.9% on time and its weakest Jul–Sep 2025 at 65.2%, a swing of 23 points on roughly 91 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 202592 flights65.2%
- Oct–Dec 202591 flights87.9%
- Jan–Mar 202690 flights87.8%
- Apr–Jun 202691 flights76.9%
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5393 ranged from 75.0% on Saturday to 84.3% on Tuesday. With about 52 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 5393 runs late
One category carries most of the weight here. National Airspace System accounts for 49% of the 5,548 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.
- 49%National Airspace System
- 28%Carrier
- 14%Late-arriving aircraft
- 9%Extreme weather
49% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 2,710 minutes out of 5,548, against a national NAS share of 21%. The split is drawn from 5,548 delay minutes reported on OO 5393.
Cancellations are rare at 0.00%, below the national 1.81% 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
8.3% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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 1,048 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.
Every one of the 364 flights under OO 5393 in the data flew HSV to DEN. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 364 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 5393
For a booking, read OO 5393 as 79.5% on time with 0.00% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- HSV to DEN, every carrier and departure
- DEN to HSV, the return direction
- SkyWest Airlines 4640 on the same route87.9%
- Denver International (DEN) 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
- Worst months to fly in the US, ranked by the data
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.