Carrier performance at one airport
B6→BOS
JetBlue Airways at Boston Logan International
- Departures
- 37,517
- Period
- September 2025 to August 2026
- Routes
- 25
- Rank here
- #8 of 11
JetBlue Airways at Boston carries a cancellation problem, not just a delay problem: 3.4% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, about seven flights in ten 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 37,517 flights, of which Allegiant Air flew 586 at 82.1% on time.
Measured against the airport rather than the country, JetBlue Airways runs 4 points behind the 74.6% weighted average across all carriers at BOS. That is the comparison worth making: every operator here works the same runways, the same airspace and the same weather.
Key figures
On time
70.1%
36,118 completed departures
Avg delay
71 min
Across delayed flights only
Cancelled
3.41%
At BOS, this carrier only
Rank here
#8
Of 11 carriers clearing the floor at BOS
These figures cover 38,000 flights between September 2025 and August 2026. Beyond the headline rate, 12.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Against the competition
Every carrier at BOS, ranked
The choice of carrier is not cosmetic here. Allegiant Air arrives on time 82.1% of the time; Spirit Airlines manages 61.6%. Sample sizes sit next to every figure, because a two-point gap across 1,737 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Allegiant Air | 586 | 82.1% | 79 min | 0.68% | B+ |
| Envoy Air | 2,055 | 79.1% | 86 min | 2.29% | B |
| American Airlines | 17,138 | 78.2% | 93 min | 2.54% | B |
| United Airlines | 13,042 | 77.7% | 78 min | 1.92% | B |
| Republic Airways | 34,798 | 77.2% | 68 min | 4.38% | B− |
| Delta Air Lines | 26,567 | 76.0% | 73 min | 2.16% | B |
| Alaska Airlines | 2,420 | 71.4% | 57 min | 1.36% | C |
| JetBlue Airways (this page) | 37,517 | 70.1% | 71 min | 3.41% | C− |
| Southwest Airlines | 7,340 | 69.3% | 62 min | 1.66% | C |
| Frontier Airlines | 926 | 68.0% | 65 min | 1.84% | C |
| Spirit Airlines | 1,737 | 61.6% | 80 min | 5.87% | D− |
Spirit Airlines cancels 5.9% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Route by route
Where JetBlue Airways flies from BOS
JetBlue Airways operates 25 routes out of BOS with enough volume to report. Route records inside one carrier at one airport still spread widely, because a short shuttle and a transcontinental have very different exposure to a late inbound.
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| BOS to DCA · Washington | 2,626 | 66.3% | 74 min | 4.87% | C− |
| BOS to MCO · Orlando | 2,520 | 66.6% | 74 min | 3.61% | C− |
| BOS to JFK · New York | 2,389 | 70.8% | 79 min | 5.44% | C− |
| BOS to FLL · Fort Lauderdale | 1,971 | 66.4% | 68 min | 3.50% | C− |
| BOS to SFO · San Francisco | 1,808 | 66.5% | 67 min | 2.05% | C |
| BOS to LAX · Los Angeles | 1,642 | 72.2% | 73 min | 2.01% | C |
| BOS to TPA · Tampa | 1,588 | 73.1% | 68 min | 3.90% | C− |
| BOS to RSW · Fort Myers | 1,543 | 68.6% | 68 min | 2.92% | C |
| BOS to PBI · West Palm Beach | 1,503 | 64.5% | 69 min | 3.73% | D− |
| BOS to SJU · San Juan | 1,142 | 66.5% | 73 min | 2.80% | C |
| BOS to RDU · Raleigh | 1,105 | 73.0% | 74 min | 3.53% | C− |
| BOS to LAS · Las Vegas | 1,045 | 73.2% | 74 min | 1.53% | C |
| BOS to PIT · Pittsburgh | 1,005 | 71.5% | 73 min | 4.38% | C− |
| BOS to SAN · San Diego | 919 | 82.4% | 69 min | 1.96% | B |
| BOS to PHL · Philadelphia | 892 | 70.7% | 70 min | 3.59% | C− |
| BOS to BUF · Buffalo | 887 | 68.2% | 76 min | 3.95% | C− |
| BOS to BNA · Nashville | 887 | 71.6% | 66 min | 3.83% | C− |
| BOS to ATL · Atlanta | 859 | 66.9% | 70 min | 3.61% | C− |
| BOS to RIC · Richmond | 757 | 73.4% | 65 min | 3.96% | C− |
| BOS to DTW · Detroit | 747 | 68.9% | 77 min | 4.55% | C− |
| BOS to DEN · Denver | 690 | 68.4% | 63 min | 2.61% | C |
| BOS to CLE · Cleveland | 671 | 77.4% | 76 min | 3.43% | B− |
| BOS to CHS · Charleston | 670 | 75.3% | 71 min | 2.54% | B |
| BOS to JAX · Jacksonville | 665 | 75.9% | 71 min | 3.76% | B− |
| BOS to SAV · Savannah | 581 | 77.9% | 66 min | 2.93% | B |
Flight by flight
JetBlue Airways flight numbers from BOS
39 JetBlue Airways flight numbers leaving BOS flew their main route often enough to have a record of their own. Grouped by destination.
- B6 715to BUF 22:1063.0%
- B6 641to CLE 13:4684.1%
- B6 1355to DCA 16:1452.6%
- B6 1955to DCA 12:4053.4%
- B6 2255to DCA 06:1559.4%
- B6 2355to DCA 08:2965.4%
- B6 993to DEN 19:5957.2%
- B6 569to FLL 06:0081.8%
- B6 2033to IAH 09:1574.0%
- B6 109to JAX 07:0084.8%
- B6 517to JFK 13:4066.0%
- B6 717to JFK 12:2060.3%
- B6 1017to JFK 08:4164.9%
- B6 287to LAX 06:0085.1%
- B6 387to LAX 20:2564.5%
- B6 487to LAX 14:0072.3%
- B6 451to MCO 16:2052.2%
- B6 551to MCO 14:1563.1%
- B6 2251to MCO 07:0071.8%
- B6 401to MSY 07:0074.3%
- B6 311to ORD 07:0079.1%
- B6 811to ORD 15:3552.8%
- B6 2321to PBI 15:3967.2%
- B6 2185to PIT 17:5355.8%
- B6 1883to RDU 07:0087.7%
- B6 2783to RDU 20:5462.6%
- B6 1281to RIC 07:0087.0%
- B6 165to RSW 06:4574.0%
- B6 2065to RSW 07:0067.1%
- B6 619to SAN 06:0587.2%
- B6 249to SAV 07:2582.7%
- B6 333to SFO 16:4054.3%
- B6 733to SFO 17:2055.9%
- B6 561to SJU 18:4548.5%
- B6 861to SJU 08:0073.4%
- B6 845to SYR 21:3557.3%
- B6 391to TPA 16:1959.1%
- B6 591to TPA 15:4559.4%
- B6 891to TPA 06:0090.3%
Departure window
Best time of day for this operation
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 30 points, against 20 points between the best and worst carrier.
- 5am–8am7,156 flights85.5%
- 8am–11am8,248 flights78.7%
- 11am–2pm5,073 flights71.2%
- 2pm–5pm6,512 flights63.7%
- 5pm–8pm6,161 flights56.6%
- 8pm–5am4,367 flights55.5%
Scale runs 45% to 90%.
The 8pm–5am window is where this operation falls apart: 55.5% on time, against 85.5% for the 5am–8am 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 8,248 flights scheduled in it.
Across the year
Seasonal pattern
December is the weak month at 60.0% on time, against 81.4% in September. 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. March was the busiest month here, with 3,445 flights.
Delay causes
What holds this operation up
- 45%Late-arriving aircraft
- 27%National Airspace System
- 26%Carrier
- 3%Extreme weather
- 0%Security
45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 770,000 reported delay minutes here, that single category outweighs weather by 17 to one. The split is drawn from 769,797 reported delay minutes.
Cancellations run at 3.41%, 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.
12.4% 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.
37,517 flights sit behind these numbers, which is a large enough sample that the headline rate is not moving on noise. Where a sub-group falls below 30 flights the site shows a dash instead of a percentage.
Put together: the delay figures matter less here than the 3.41% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 36,118 completed flights over 12 months sit behind that.
Common questions
JetBlue Airways at BOS
How often is JetBlue Airways at BOS delayed?
Roughly one flight in three arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 29.9% of the 37,517 flights in this analysis, against 22.7% nationally. Delayed flights are late by a little over an hour on average.
Which airline is most reliable on JetBlue Airways at BOS?
Allegiant Air leads at 82.1% on time across 586 flights. Spirit Airlines is at the other end on 61.6%, a gap of 20 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on JetBlue Airways at BOS?
The 5am–8am departure window is the strongest at 85.5% on time. The 8pm–5am window is the weakest at 55.5%, 30 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are December delays on JetBlue Airways at BOS?
December is the weakest month at 60.0% on time, compared with 81.4% in September. Across the year that is 21 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
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.