Flight number record

AA 234

American Airlines · San Francisco to New York

Route: SFO → JFK
Departs: 06:15
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AA 234, check with American Airlines.

AA 234 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 14 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 3.4 hours. That rests on 365 flights, with a median arrival 18 minutes early.

Set against the rest of the country, AA 234's record is 14 points better than the US average of 77.6%. That gap is worth roughly 142 fewer late arrivals for every thousand flights.

On time

91.8%

Arrivals under 15 minutes late, of 354 completed flights

Avg delay

204 min

Across delayed arrivals only, not all flights

Cancelled

2.47%

National rate is 1.81%

1 hour+ late

4.2%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 18 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 AA 234 flies

AA 234 flies SFO to JFK without a single fixed slot. Its most common scheduled departure was 06:15, used on 92 of 365 flights, with 07:05 (43 flights) and 06:00 (40 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:1592 flights25.2%
Departs 07:0543 flights11.8%
Departs 06:0040 flights11.0%

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 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 AA 234 runs 3 points better at 91.8%. 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

AA 234 next to SFO to JFK

Every carrier on SFO to JFK combined arrived on time 80.1% of the time across 6,729 flights, so AA 234 is 12 points ahead of it. American flew 1,448 flights on the same city pair under all its flight numbers, including this one, and those ran 80.9% on time. Across its whole network American Airlines managed 74.4%, which this flight beats by 17 points.

AA 234 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AA 234	365	91.8%	204 min	2.47%	A
All American Airlines on SFO–JFK	1,448	80.9%	119 min	2.90%	B
All carriers on SFO–JFK	6,729	80.1%	78 min	1.98%	B
American Airlines, whole network	986,297	74.4%	85 min	2.29%	C

Across the year

AA 234 quarter by quarter

Quarter by quarter AA 234 held fairly steady: 92.2% in Jul–Sep 2025, 93.3% in Oct–Dec 2025, 87.1% in Jan–Mar 2026 and 94.4% in Apr–Jun 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights92.2%
Oct–Dec 202592 flights93.3%
Jan–Mar 202690 flights87.1%
Apr–Jun 202691 flights94.4%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, AA 234 did best on Thursday at 98.0% on time and worst on Saturday at 84.0%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why AA 234 runs late

One category carries most of the weight here. Carrier accounts for 79% of the 5,919 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.

Carrier
79%
Late-arriving aircraft
9%
Extreme weather
6%
National Airspace System
5%

The largest share of delay minutes, 79%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 4,694 of the 5,919 delay minutes reported here. The split is drawn from 5,919 delay minutes reported on AA 234.

Cancellations sit at 2.47% against a national 1.81%, which is ordinary. Diversions add another 0.55%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 4.2% 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 2,586 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.

Every one of the 365 flights under AA 234 in the data flew SFO to JFK. 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. 365 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 AA 234

For a booking, read AA 234 as 91.8% on time with 2.47% cancelled over 365 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 American 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