Flight number record
OO 4785
SkyWest Airlines · Houston to Nashville
- Route
- IAH → BNA
- Departs
- 18:05
- Flights
- 260
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4785, 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 4785 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 260 flights, with a median arrival right on schedule.
The national on-time rate over the same period is 77.3%, so OO 4785 runs 6 points behind the country as a whole. Across a thousand flights that is about 57 extra late arrivals.
Key figures
On time
71.6%
Arrivals under 15 minutes late, of 257 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
1.15%
National rate is 1.89%
1 hour+ late
10.5%
National rate is 8.3%
These figures cover 260 flights between September 2025 and August 2026. Beyond the headline rate, 10.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 4785 flies
OO 4785 flies IAH to BNA without a single fixed slot. Its most common scheduled departure was 18:05, used on 153 of 260 flights, with 18:15 (47 flights) and 18:13 (31 flights) next.
- Departs 18:05153 flights58.8%
- Departs 18:1547 flights18.1%
- Departs 18:1331 flights11.9%
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 18:05 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and OO 4785 runs 4 points better at 71.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
OO 4785 next to IAH to BNA
Every carrier on IAH to BNA combined arrived on time 73.4% of the time across 1,429 flights, so OO 4785 is 2 points behind it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4785thin sample | 260 | 71.6% | 71 min | 1.15% | C |
| All SkyWest Airlines on IAH–BNA | 376 | 69.9% | 75 min | 0.80% | C+ |
| All carriers on IAH–BNA | 1,429 | 73.4% | 62 min | 0.56% | C+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4785 quarter by quarter
OO 4785 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Oct–Dec 2025 at 67.8%, a swing of 22 points on roughly 65 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 202590 flights67.8%
- Jan–Mar 202690 flights71.3%
- Apr–Jun 202650 flights68.0%
Scale runs 60% to 95%.
By weekday, OO 4785 did best on Wednesday at 81.1% on time and worst on Saturday at 61.1%. Each day rests on about 37 flights, so a gap of 20 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4785 runs when it is late
The 73 late arrivals split 28 under half an hour, 18 between 30 and 60 minutes, and 27 an hour or more.
- 15+ min early28 flights10.9%
- Within 15 min156 flights60.7%
- 15–29 min late28 flights10.9%
- 30–59 min late18 flights7.0%
- 1–2 hours late16 flights6.2%
- 2+ hours late11 flights4.3%
Scale runs 0% to 100%.
Share of 257 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 60 departures that left 15 minutes late or more, only 6 made it up before arrival. In the other direction, 19 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 BNA.
The worst days
Worst days for OO 4785
The latest arrival of the period was on 17 May 2026, 13 hours 35 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 May 2026 | 13 hours 35 minutes | Carrier |
| 7 October 2025 | 3 hours 51 minutes | National Airspace System |
| 19 March 2026 | 3 hours 40 minutes | Carrier |
| 18 May 2026 | 3 hours 34 minutes | Carrier |
| 20 February 2026 | 3 hours 8 minutes | Late-arriving aircraft |
Delay causes
Why OO 4785 runs late
Carrier accounts for 55% of the 5,173 delay minutes carriers reported here, and the remaining four split what is left.
- 55%Carrier
- 24%National Airspace System
- 18%Late-arriving aircraft
- 3%Extreme weather
The largest share of delay minutes, 55%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,862 of the 5,173 delay minutes reported here. The split is drawn from 5,173 delay minutes reported on OO 4785.
Cancellations sit at 1.15% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
10.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 657 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 MKE (57), PIA to ORD (3) and GRR to ORD (2), but none flew often enough under OO 4785 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to IAH to BNA only.
One caution: this is a thin sample. 260 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 4785
For a booking, read OO 4785 as 71.6% on time with 1.15% cancelled over 260 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- IAH to BNA, every carrier and departure
- BNA to IAH, the return direction
- United Airlines 2174 on the same route86.7%
- George Bush Intercontinental (IAH) delay statistics
- Nashville International (BNA) 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
- How often a connection fails at the major US hubs
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.