Flight number record

UA 499

United Airlines · San Francisco to Nashville

Route: SFO → BNA
Departs: 09:10
Flights: 330
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 499, check with United Airlines.

UA 499 earns a B+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 40 minutes. That rests on 330 flights, with a median arrival 4 minutes early.

Set against the rest of the country, UA 499's record is 7 points better than the US average of 77.6%. That gap is worth roughly 65 fewer late arrivals for every thousand flights.

On time

84.1%

Arrivals under 15 minutes late, of 328 completed flights

Avg delay

41 min

Across delayed arrivals only, not all flights

Cancelled

0.61%

National rate is 1.81%

1 hour+ late

2.4%

National rate is 8.1%

These figures cover 330 flights between July 2025 and June 2026. The median arrival is 4 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.

Schedule

When UA 499 flies

UA 499 flies SFO to BNA without a single fixed slot. Its most common scheduled departure was 09:10, used on 78 of 330 flights, with 09:00 (37 flights) and 11:05 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:1078 flights23.6%
Departs 09:0037 flights11.2%
Departs 11:0536 flights10.9%

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 09:10 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and UA 499 runs level with that at 84.1%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

UA 499 next to SFO to BNA

Every carrier on SFO to BNA combined arrived on time 73.9% of the time across 1,162 flights, so UA 499 is 10 points ahead of it. United flew 851 flights on the same city pair under all its flight numbers, including this one, and those ran 79.9% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 5 points.

UA 499 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 499thin sample	330	84.1%	41 min	0.61%	B+
All United Airlines on SFO–BNA	851	79.9%	53 min	0.71%	B+
All carriers on SFO–BNA	1,162	73.9%	52 min	0.60%	C+
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 499 quarter by quarter

Quarter by quarter UA 499 held fairly steady: 82.4% in Jul–Sep 2025, 85.6% in Oct–Dec 2025, 82.8% in Jan–Mar 2026 and 85.5% in Apr–Jun 2026. A spread of 3 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202591 flights82.4%
Oct–Dec 202590 flights85.6%
Jan–Mar 202666 flights82.8%
Apr–Jun 202683 flights85.5%

Scale runs 75% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, UA 499 ranged from 75.7% on Saturday to 87.5% on Thursday. With about 47 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why UA 499 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 2,109 reported delay minutes.

Late-arriving aircraft
38%
Carrier
38%
National Airspace System
25%

38% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 2,109 reported delay minutes here, that single category outweighs weather by 38 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 2,109 delay minutes reported on UA 499.

Cancellations are rare at 0.61%, below the national 1.81% 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

Badly late arrivals are rare here: only 2.4% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

At 1,969 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The same number turns up on six other city pairs in the data, including BNA to EWR (155), SEA to SFO (72) and PHX to SFO (56), but none flew often enough under UA 499 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SFO to BNA only.

One caution: this is a thin sample. 330 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 UA 499

For a booking, read UA 499 as 84.1% on time with 0.61% cancelled over 330 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 United 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.

Key figures