Flight number record
OO 4746
SkyWest Airlines · Nashville to Houston
- Route
- BNA → IAH
- Departs
- 06:15
- Flights
- 261
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4746, 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 4746 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 11 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 261 flights, with a median arrival 11 minutes early.
Set against the rest of the country, OO 4746's record is 11 points better than the US average of 77.3%. That gap is worth roughly 107 fewer late arrivals for every thousand flights.
Key figures
On time
88.0%
Arrivals under 15 minutes late, of 258 completed flights
Avg delay
99 min
Across delayed arrivals only, not all flights
Cancelled
1.15%
National rate is 1.89%
1 hour+ late
5.0%
National rate is 8.3%
These figures cover 261 flights between September 2025 and August 2026. The median arrival is 11 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 4746 flies
OO 4746 flies BNA to IAH without a single fixed slot. Its most common scheduled departure was 06:15, used on 77 of 261 flights, with 08:43 (37 flights) and 06:10 (35 flights) next.
- Departs 06:1577 flights29.5%
- Departs 08:4337 flights14.2%
- Departs 06:1035 flights13.4%
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 06:15 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 4746 runs level with that at 88.0%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
OO 4746 next to BNA to IAH
Every carrier on BNA to IAH combined arrived on time 82.3% of the time across 1,428 flights, so OO 4746 is 6 points ahead of it. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4746thin sample | 261 | 88.0% | 99 min | 1.15% | A |
| All SkyWest Airlines on BNA–IAH | 377 | 86.9% | 96 min | 1.06% | A |
| All carriers on BNA–IAH | 1,428 | 82.3% | 78 min | 0.84% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4746 quarter by quarter
OO 4746 did not run the same all year. Its best quarter was Jan–Mar 2026 at 95.3% on time and its weakest Apr–Jun 2026 at 76.0%, a swing of 19 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 flights93.3%
- Oct–Dec 202592 flights85.9%
- Jan–Mar 202689 flights95.3%
- Apr–Jun 202650 flights76.0%
Scale runs 70% to 100%.
By weekday, OO 4746 ranged from 83.8% on Friday to 94.7% on Tuesday. With about 37 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 4746 runs when it is late
OO 4746 often beats the schedule: 108 of 258 completed flights, 42%, arrived 15 minutes or more early. The 31 late arrivals split 10 under half an hour, 8 between 30 and 60 minutes, and 13 an hour or more.
- 15+ min early108 flights41.9%
- Within 15 min119 flights46.1%
- 15–29 min late10 flights3.9%
- 30–59 min late8 flights3.1%
- 1–2 hours late1 flights0.4%
- 2+ hours late12 flights4.7%
Scale runs 0% to 100%.
Share of 258 completed flights by arrival against schedule.
A late pushback is often recovered here: of 35 departures that left 15 minutes late or more, 12 still arrived on time. 8 flights left on time and still arrived late.
The worst days
Worst days for OO 4746
The latest arrival of the period was on 30 April 2026, 5 hours 27 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 |
|---|---|---|
| 30 April 2026 | 5 hours 27 minutes | Carrier |
| 18 December 2025 | 5 hours 3 minutes | Late-arriving aircraft |
| 9 January 2026 | 4 hours 57 minutes | Carrier |
| 18 May 2026 | 3 hours 51 minutes | Late-arriving aircraft |
| 19 May 2026 | 3 hours 50 minutes | Carrier |
Delay causes
Why OO 4746 runs late
Carrier accounts for 60% of the 3,077 delay minutes carriers reported here, and the remaining four split what is left.
- 60%Carrier
- 25%Late-arriving aircraft
- 14%National Airspace System
- 1%Extreme weather
The largest share of delay minutes, 60%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,841 of the 3,077 delay minutes reported here. The split is drawn from 3,077 delay minutes reported on OO 4746.
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
5.0% 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 an hour and a half, which a normal layover absorbs.
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 five other city pairs in the data, including ORD to RDU (32), ORD to ABQ (24) and CVG to ORD (23), but none flew often enough under OO 4746 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BNA to IAH only.
One caution: this is a thin sample. 261 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 4746
For a booking, OO 4746 has one of the better records a US domestic flight can show: 88.0% on time and 1.15% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- BNA to IAH, every carrier and departure
- IAH to BNA, the return direction
- Nashville International (BNA) delay statistics
- George Bush Intercontinental (IAH) 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.