Flight number record
B6 115
JetBlue Airways · New York to San Francisco
- Route
- JFK → SFO
- Departs
- 06:00
- Flights
- 347
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s B6 115, check with JetBlue Airways.
B6 115 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 about an hour on average. That rests on 347 flights, with a median arrival 9 minutes early.
Key figures
On time
80.9%
Arrivals under 15 minutes late, of 340 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
2.02%
National rate is 1.89%
1 hour+ late
5.9%
National rate is 8.3%
These figures cover 347 flights between September 2025 and August 2026. The median arrival is 9 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 B6 115 flies
B6 115 flies JFK to SFO without a single fixed slot. Its most common scheduled departure was 06:00, used on 99 of 347 flights, with 10:30 (69 flights) and 06:15 (44 flights) next.
- Departs 06:0099 flights28.5%
- Departs 10:3069 flights19.9%
- Departs 06:1544 flights12.7%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and B6 115 runs 8 points worse at 80.9%. 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
B6 115 next to JFK to SFO
Every carrier on JFK to SFO combined arrived on time 71.4% of the time across 6,800 flights, so B6 115 is 10 points ahead of it. JetBlue flew 1,955 flights on the same city pair under all its flight numbers, including this one, and those ran 73.4% on time. Across its whole network JetBlue Airways managed 71.3%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| B6 115thin sample | 347 | 80.9% | 59 min | 2.02% | B |
| All JetBlue Airways on JFK–SFO | 1,955 | 73.4% | 73 min | 2.86% | C |
| All carriers on JFK–SFO | 6,800 | 71.4% | 69 min | 2.57% | C |
| JetBlue Airways, whole network | 240,615 | 71.3% | 77 min | 3.56% | C− |
Across the year
B6 115 quarter by quarter
Quarter by quarter B6 115 held fairly steady: 78.4% in Oct–Dec 2025, 77.9% in Jan–Mar 2026, 82.7% in Apr–Jun 2026 and 81.4% in Jul–Sep 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202526 flights—
- Oct–Dec 202588 flights78.4%
- Jan–Mar 202690 flights77.9%
- Apr–Jun 202681 flights82.7%
- Jul–Sep 202662 flights81.4%
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, B6 115 did best on Wednesday at 88.2% on time and worst on Thursday at 71.2%. Each day rests on about 50 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late B6 115 runs when it is late
B6 115 often beats the schedule: 132 of 340 completed flights, 39%, arrived 15 minutes or more early. The 65 late arrivals split 28 under half an hour, 17 between 30 and 60 minutes, and 20 an hour or more.
- 15+ min early132 flights38.8%
- Within 15 min143 flights42.1%
- 15–29 min late28 flights8.2%
- 30–59 min late17 flights5.0%
- 1–2 hours late13 flights3.8%
- 2+ hours late7 flights2.1%
Scale runs 0% to 100%.
Share of 340 completed flights by arrival against schedule.
8 of 49 late departures made up the time and arrived on time, 16% of them. In the other direction, 24 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 SFO.
The worst days
Worst days for B6 115
The latest arrival of the period was on 27 December 2025, 7 hours 24 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 |
|---|---|---|
| 27 December 2025 | 7 hours 24 minutes | Carrier |
| 14 December 2025 | 4 hours 53 minutes | Extreme weather |
| 14 October 2025 | 4 hours 12 minutes | Carrier |
| 13 July 2026 | 2 hours 47 minutes | Carrier |
| 4 March 2026 | 2 hours 38 minutes | Late-arriving aircraft |
Delay causes
Why B6 115 runs late
National Airspace System accounts for 44% of the 3,821 delay minutes carriers reported here, and the remaining four split what is left.
- 44%National Airspace System
- 35%Carrier
- 14%Late-arriving aircraft
- 7%Extreme weather
- 0%Security
44% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,686 minutes out of 3,821, against a national NAS share of 21%. The split is drawn from 3,821 delay minutes reported on B6 115.
Cancellations sit at 2.02% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
5.9% 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 about an hour, which a normal layover absorbs.
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 347 flights under B6 115 in the data flew JFK to SFO. 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. 347 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 B6 115
For a booking, read B6 115 as 80.9% on time with 2.02% cancelled over 347 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- JFK to SFO, every carrier and departure
- SFO to JFK, the return direction
- American Airlines 179 on the same route79.8%
- American Airlines 177 on the same route60.4%
- Delta Air Lines 668 on the same route71.8%
- Delta Air Lines 667 on the same route55.7%
- American Airlines 15 on the same route73.7%
- Delta Air Lines 679 on the same route72.7%
- John F. Kennedy International (JFK) delay statistics
- San Francisco International (SFO) delay statistics
- JetBlue Airways on-time record
- Every JetBlue Airways 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 JetBlue Airways’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.