Flight number record

OO 5393

SkyWest Airlines · Huntsville to Denver

Route: HSV → DEN
Departs: 15:35
Flights: 363
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 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+, 4 points better than the national rate of 77.3%. 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 rests on 363 flights, with a median arrival 8 minutes early.

On time

81.1%

Arrivals under 15 minutes late, of 359 completed flights

Avg delay

73 min

Across delayed arrivals only, not all flights

Cancelled

0.55%

National rate is 1.89%

1 hour+ late

7.0%

National rate is 8.3%

These figures cover 363 flights between September 2025 and August 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.

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Schedule

When OO 5393 flies

OO 5393 flies HSV to DEN without a single fixed slot. Its most common scheduled departure was 15:35, used on 113 of 363 flights, with 15:45 (46 flights) and 15:40 (40 flights) next.

Departs 15:35113 flights31.1%
Departs 15:4546 flights12.7%
Departs 15:4040 flights11.0%

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 15:35 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and OO 5393 runs 9 points better at 81.1%. 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 5393 next to HSV to DEN

Every carrier on HSV to DEN combined arrived on time 85.2% of the time across 728 flights, so OO 5393 is 4 points behind it. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 2 points.

OO 5393 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5393thin sample	363	81.1%	73 min	0.55%	B+
All SkyWest Airlines on HSV–DEN	728	85.2%	73 min	0.27%	A+
All carriers on HSV–DEN	728	85.2%	73 min	0.27%	A+
SkyWest Airlines, whole network	855,406	78.7%	88 min	1.79%	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 2026 at 70.2%, a swing of 18 points on roughly 73 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 flights73.3%
Oct–Dec 202591 flights87.9%
Jan–Mar 202690 flights87.8%
Apr–Jun 202691 flights76.9%
Jul–Sep 202661 flights70.2%

Scale runs 60% to 95%.

By weekday, OO 5393 ranged from 76.9% on Sunday to 84.6% on Monday. With about 52 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.

Arrival by arrival

How late OO 5393 runs when it is late

OO 5393 often beats the schedule: 127 of 359 completed flights, 35%, arrived 15 minutes or more early. The 68 late arrivals split 21 under half an hour, 22 between 30 and 60 minutes, and 25 an hour or more.

15+ min early127 flights35.4%
Within 15 min164 flights45.7%
15–29 min late21 flights5.8%
30–59 min late22 flights6.1%
1–2 hours late15 flights4.2%
2+ hours late10 flights2.8%

Scale runs 0% to 100%.

Share of 359 completed flights by arrival against schedule.

6 of 48 late departures made up the time and arrived on time, 13% of them. In the other direction, 26 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 DEN.

The worst days

Worst days for OO 5393

The latest arrival of the period was on 12 July 2026, 6 hours 12 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across July, September, March and August, with no single month standing out.

The latest arrivals of OO 5393 in the period
Date	Arrived late by	Largest filed cause
12 July 2026	6 hours 12 minutes	Carrier
27 July 2026	5 hours 56 minutes	Carrier
16 September 2025	4 hours 40 minutes	National Airspace System
7 March 2026	3 hours 50 minutes	Late-arriving aircraft
15 August 2026	3 hours 34 minutes	Extreme weather

Delay causes

Why OO 5393 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 4,954 reported delay minutes.

Carrier
40%
National Airspace System
33%
Late-arriving aircraft
14%
Extreme weather
13%

Extreme weather accounts for 13% 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 2.1 times the usual weather exposure. The split is drawn from 4,954 delay minutes reported on OO 5393.

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

7.0% 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 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.

Every one of the 363 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. 363 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 81.1% on time with 0.55% cancelled over 363 flights. Those are rates from the past twelve months, not a forecast for any particular 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