Carrier route record
B6BOS→ATL
JetBlue Airways · Boston to Atlanta
- Flights
- 859
- Period
- September 2025 to August 2026
- Share of route
- 17%
- Carriers
- 4
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on BOS to ATL carries a cancellation problem, not just a delay problem: 3.6% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, about two flights in three arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 859 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 3,726 at 80.8% on time.
The national on-time rate over the same period is 77.3%, so JetBlue on BOS to ATL runs 10 points behind the country as a whole. Across a thousand flights that is about 104 extra late arrivals.
Key figures
On time
66.9%
Arrivals under 15 minutes late, of 824 completed flights
Avg delay
70 min
Across delayed arrivals only, not all flights
Cancelled
3.61%
National rate is 1.89%
Whole route
76.8%
Every carrier on BOS to ATL, 5,050 flights
These figures cover 859 flights between September 2025 and August 2026. Beyond the headline rate, 13.6% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Carrier by carrier
JetBlue against every carrier on BOS to ATL
JetBlue flew 859 of the 5,050 flights on BOS to ATL, about 17% of it. Its 66.9% on time is 10 points worse than the route as a whole, which runs 76.8%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Delta at 80.8% to Spirit at 50.0%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 80.8% of the time; Frontier Airlines manages 62.6%. Sample sizes sit next to every figure, because a two-point gap across 453 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 3,726 | 80.8% | 75 min | 1.85% | B |
| JetBlue Airways (this page) | 859 | 66.9% | 70 min | 3.61% | C− |
| Frontier Airlines | 453 | 62.6% | 62 min | 2.87% | D |
| Spirit Airlinesthin sample | 12 | 50.0% | 61 min | 0.00% | F+ |
The spread between Delta and Frontier is 18 points, wide enough that it should decide the booking. On a hundred trips that is 18 more arrivals inside the on-time window.
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 38 points, against 18 points between the best and worst carrier.
- 5am–8am76 flights78.4%
- 8am–11am236 flights83.8%
- 11am–2pm48 flights76.6%
- 2pm–5pm206 flights62.4%
- 5pm–8pm171 flights55.6%
- 8pm–5am122 flights45.5%
Scale runs 35% to 90%.
The 8pm–5am window is where this operation falls apart: 45.5% on time, against 83.8% for the 8am–11am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8am–11am window is the busiest, with 236 flights scheduled in it.
Across the year
JetBlue on BOS to ATL through the year
July is the worst month at 46.1% on time, 40 points below October, the best at 86.0%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. August was the busiest month here, with 88 flights.
Across the week, Tuesday is the strongest day at 74.5% on time and Sunday the weakest at 54.0%, a spread of 21 points.
Arrival by arrival
How late JetBlue on BOS to ATL runs when it is late
JetBlue on BOS to ATL often beats the schedule: 237 of 824 completed flights, 29%, arrived 15 minutes or more early. The 273 late arrivals split 64 under half an hour, 97 between 30 and 60 minutes, and 112 an hour or more.
- 15+ min early237 flights28.8%
- Within 15 min314 flights38.1%
- 15–29 min late64 flights7.8%
- 30–59 min late97 flights11.8%
- 1–2 hours late71 flights8.6%
- 2+ hours late41 flights5.0%
Scale runs 0% to 100%.
Share of 824 completed flights by arrival against schedule.
50 of 262 late departures made up the time and arrived on time, 19% of them. In the other direction, 61 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 ATL.
The worst days
Worst days for JetBlue on BOS to ATL
The latest arrival of the period was on 13 July 2026, 5 hours 8 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Five of the five worst days fell in July 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 13 July 2026 | 5 hours 8 minutes | Carrier |
| 19 July 2026 | 4 hours 50 minutes | Carrier |
| 5 July 2026 | 4 hours 29 minutes | National Airspace System |
| 27 July 2026 | 4 hours 12 minutes | Carrier |
| 17 July 2026 | 4 hours 4 minutes | National Airspace System |
Delay causes
Why JetBlue runs late on this route
Late-arriving aircraft accounts for 49% of the 19,000 delay minutes carriers reported here, and the remaining four split what is left.
- 49%Late-arriving aircraft
- 26%Carrier
- 25%National Airspace System
- 1%Extreme weather
49% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 19,000 reported delay minutes here, that single category outweighs weather by 46 to one. The split is drawn from 19,218 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 83.8% on time here.
Cancellations run at 3.61%, 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
13.6% 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.
The 946 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 return leg runs 69.2% on time across 857 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 859 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 BOS to ATL
Put together: the delay figures matter less here than the 3.61% 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. 824 completed flights over 12 months sit behind that.
Related
Where to go next
- BOS to ATL, every carrier
- JetBlue on ATL to BOS, the return leg
- Delta Air Lines on BOS to ATL80.8%
- Frontier Airlines on BOS to ATL62.6%
- JetBlue Airways network-wide record
- Boston Logan International (BOS) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) 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.