Carrier route record
B6AUS→BOS
JetBlue Airways · Austin to Boston
- Flights
- 426
- Period
- September 2025 to August 2026
- Share of route
- 25%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on AUS to BOS draws a D−. Roughly one flight in two arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 426 flights, with a median arrival 6 minutes late.
The national on-time rate over the same period is 77.3%, so JetBlue on AUS to BOS runs 18 points behind the country as a whole. Across a thousand flights that is about 183 extra late arrivals.
Key figures
On time
59.0%
Arrivals under 15 minutes late, of 412 completed flights
Avg delay
82 min
Across delayed arrivals only, not all flights
Cancelled
3.29%
National rate is 1.89%
Whole route
64.5%
Every carrier on AUS to BOS, 1,713 flights
These figures cover 426 flights between September 2025 and August 2026. Beyond the headline rate, 18.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
JetBlue against every carrier on AUS to BOS
JetBlue flew 426 of the 1,713 flights on AUS to BOS, about 25% of it. Its 59.0% on time is 6 points worse than the route as a whole, which runs 64.5%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Delta at 69.6% to Southwest at 54.8%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 1,001 | 69.6% | 90 min | 2.70% | C |
| JetBlue Airways (this page) | 426 | 59.0% | 82 min | 3.29% | D− |
| Southwest Airlinesthin sample | 286 | 54.8% | 52 min | 1.75% | F |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When JetBlue runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 23 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am82 flights71.4%
- 11am–2pm124 flights48.4%
- 2pm–5pm23 flights—
- 5pm–8pm196 flights62.4%
- 8pm–5am1 flights—
Scale runs 40% to 75%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 48.4% on time against 71.4% for 8am–11am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 5pm–8pm window is the busiest, with 196 flights scheduled in it.
Across the year
JetBlue on AUS to BOS through the year
December is the weak month at 38.7% on time, against 74.2% in May. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. July was the busiest month here, with 62 flights.
Across the week, Tuesday is the strongest day at 67.9% on time and Friday the weakest at 47.6%, a spread of 20 points.
Arrival by arrival
How late JetBlue on AUS to BOS runs when it is late
The 169 late arrivals split 41 under half an hour, 52 between 30 and 60 minutes, and 76 an hour or more.
- 15+ min early64 flights15.5%
- Within 15 min179 flights43.4%
- 15–29 min late41 flights10.0%
- 30–59 min late52 flights12.6%
- 1–2 hours late46 flights11.2%
- 2+ hours late30 flights7.3%
Scale runs 0% to 100%.
Share of 412 completed flights by arrival against schedule.
27 of 178 late departures made up the time and arrived on time, 15% of them. 18 flights left on time and still arrived late.
The worst days
Worst days for JetBlue on AUS to BOS
The latest arrival of the period was on 7 March 2026, 20 hours 33 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across March, November, January, July and September, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 March 2026 | 20 hours 33 minutes | Late-arriving aircraft |
| 21 November 2025 | 6 hours 47 minutes | Late-arriving aircraft |
| 29 January 2026 | 6 hours 37 minutes | Carrier |
| 22 July 2026 | 4 hours 28 minutes | Carrier |
| 15 September 2025 | 4 hours 22 minutes | National Airspace System |
Delay causes
Why JetBlue runs late on this route
Late-arriving aircraft accounts for 45% of the 14,000 delay minutes carriers reported here, and the remaining four split what is left.
- 45%Late-arriving aircraft
- 33%National Airspace System
- 22%Carrier
- 0%Security
- 0%Extreme weather
45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 14,000 reported delay minutes here, that single category outweighs weather by 45 to one. The split is drawn from 13,847 reported delay minutes.
33% 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 4,561 minutes out of 14,000, against a national NAS share of 21%.
Cancellations run at 3.29%, against 1.89% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here costs
18.4% 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.
At 1,698 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 return leg is a different operation and performs like one: it runs 74.9% on time across 426 flights, 16 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 16 points of difference.
One caution: this is a thin sample. 426 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 JetBlue on AUS to BOS
Put together: the delay figures matter less here than the 3.29% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 412 completed flights over 12 months sit behind that.
Related
Where to go next
- AUS to BOS, every carrier
- JetBlue on BOS to AUS, the return leg
- Delta Air Lines on AUS to BOS69.6%
- Southwest Airlines on AUS to BOS54.8%
- JetBlue Airways network-wide record
- Austin-Bergstrom International (AUS) delay statistics
- Boston Logan International (BOS) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.