Carrier route record
B6BOS→IAH
JetBlue Airways · Boston to Houston
- Flights
- 468
- Period
- September 2025 to August 2026
- Share of route
- 23%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on BOS to IAH sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 468 flights, with a median arrival 6 minutes early.
The national on-time rate over the same period is 77.3%, so JetBlue on BOS to IAH runs 5 points behind the country as a whole. Across a thousand flights that is about 46 extra late arrivals.
Key figures
On time
72.7%
Arrivals under 15 minutes late, of 454 completed flights
Avg delay
58 min
Across delayed arrivals only, not all flights
Cancelled
2.99%
National rate is 1.89%
Whole route
80.1%
Every carrier on BOS to IAH, 2,018 flights
These figures cover 468 flights between September 2025 and August 2026. Beyond the headline rate, 9.0% 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 IAH
JetBlue flew 468 of the 2,018 flights on BOS to IAH, about 23% of it. Its 72.7% on time is 7 points worse than the route as a whole, which runs 80.1%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from United at 82.3% to JetBlue at 72.7%.
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 |
|---|---|---|---|---|---|
| United Airlines | 1,550 | 82.3% | 75 min | 1.29% | B |
| JetBlue Airways (this page) | 468 | 72.7% | 58 min | 2.99% | C |
Flight by flight
JetBlue flight numbers on BOS to IAH
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 31 points, against half a point between the best and worst carrier.
- 5am–8am30 flights86.7%
- 8am–11am299 flights77.3%
- 11am–2pm51 flights66.0%
- 2pm–5pm88 flights55.4%
- 5pm–8pm—
- 8pm–5am—
Scale runs 45% to 90%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 86.7% of the time, against 55.4% for the afternoon window. That is 31 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 299 flights scheduled in it.
Across the year
JetBlue on BOS to IAH through the year
December is the weak month at 52.4% on time, against 96.7% in April. 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 78.7% on time and Thursday the weakest at 69.1%, a spread of 10 points.
Arrival by arrival
How late JetBlue on BOS to IAH runs when it is late
JetBlue on BOS to IAH often beats the schedule: 154 of 454 completed flights, 34%, arrived 15 minutes or more early. The 124 late arrivals split 48 under half an hour, 35 between 30 and 60 minutes, and 41 an hour or more.
- 15+ min early154 flights33.9%
- Within 15 min176 flights38.8%
- 15–29 min late48 flights10.6%
- 30–59 min late35 flights7.7%
- 1–2 hours late30 flights6.6%
- 2+ hours late11 flights2.4%
Scale runs 0% to 100%.
Share of 454 completed flights by arrival against schedule.
29 of 108 late departures made up the time and arrived on time, 27% of them. In the other direction, 45 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 IAH.
The worst days
Worst days for JetBlue on BOS to IAH
The latest arrival of the period was on 28 August 2026, 4 hours 44 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across August, July and January, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 August 2026 | 4 hours 44 minutes | Carrier |
| 21 July 2026 | 3 hours 43 minutes | Extreme weather |
| 6 July 2026 | 3 hours 39 minutes | Carrier |
| 2 August 2026 | 3 hours 31 minutes | Late-arriving aircraft |
| 19 January 2026 | 3 hours 21 minutes | National Airspace System |
Delay causes
Why JetBlue runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 7,171 reported delay minutes.
- 38%National Airspace System
- 29%Carrier
- 28%Late-arriving aircraft
- 5%Extreme weather
- 0%Security
38% 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 2,708 minutes out of 7,171, against a national NAS share of 21%. The split is drawn from 7,171 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 86.7% on time here.
Cancellations run at 2.99%, against 1.89% nationally. That is roughly 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
9.0% 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 1,597 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 55.9% on time across 468 flights, 17 points below 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 17 points of difference.
One caution: this is a thin sample. 468 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 IAH
Put together: the delay figures matter less here than the 2.99% cancellation rate. A late arrival costs you about 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. 454 completed flights over 12 months sit behind that.
Related
Where to go next
- BOS to IAH, every carrier
- JetBlue on IAH to BOS, the return leg
- United Airlines on BOS to IAH82.3%
- JetBlue Airways network-wide record
- Boston Logan International (BOS) delay statistics
- George Bush Intercontinental (IAH) delay statistics
- The US routes with the most cancellations
- What a cancellation rate actually tells you (and what it hides)
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.