Route · IAH → BOS · 2020–2025 BTS data
Houston to Boston
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), IAH to BOS (Houston to Boston) ranks #1199 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 78.1%
- On-time
- -0.9 pts
- vs US avg
- 87 min
- Delay when late
- 9,755
- Flights
- #1199 of 4927
- Corpus placement
Cancelled
1.4%
Best Month
Oct 2024 88%
Worst Month
Oct 2025 57%
Distance
1,597 mi
Carriers
9
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 175 | 24 | 0 | 0 | B6,UA |
| Nov 2025 | 189 | 44 | 1 | 0 | UA,B6 |
| Oct 2025 | 189 | 82 | 0 | 1 | B6,UA |
| Sep 2025 | 158 | 67 | 1 | 0 | UA,B6 |
| Aug 2025 | 196 | 55 | 1 | 0 | UA,B6 |
| Jul 2025 | 216 | 63 | 4 | 0 | B6,UA |
| Jun 2025 | 197 | 71 | 4 | 0 | B6,UA |
| May 2025 | 206 | 52 | 2 | 0 | B6,UA |
| Apr 2025 | 150 | 28 | 1 | 1 | UA,B6 |
| Mar 2025 | 150 | 30 | 0 | 0 | B6,UA |
| Feb 2025 | 119 | 20 | 1 | 0 | B6,UA |
| Jan 2025 | 113 | 19 | 4 | 0 | B6,UA |
| Dec 2024 | 132 | 31 | 2 | 0 | B6,UA |
| Nov 2024 | 139 | 28 | 0 | 1 | UA,B6 |
| Oct 2024 | 163 | 19 | 0 | 0 | UA,NK,B6 |
| Sep 2024 | 172 | 34 | 0 | 0 | UA,B6,NK |
| Aug 2024 | 200 | 66 | 3 | 1 | B6,NK,UA |
| Jul 2024 | 211 | 77 | 20 | 1 | B6,NK,UA |
| Jun 2024 | 209 | 76 | 0 | 1 | B6,NK,UA |
| May 2024 | 192 | 70 | 4 | 0 | B6,NK,UA |
| Apr 2024 | 167 | 34 | 0 | 1 | B6,NK,UA |
| Mar 2024 | 142 | 27 | 0 | 0 | B6,UA |
| Feb 2024 | 127 | 17 | 0 | 0 | B6,UA |
| Jan 2024 | 130 | 29 | 7 | 2 | B6,UA |
IAH–BOS seasonal on-time pattern
Best: February (85.7%) · weakest: June (68.2%)
Strongest calendar month
February
85.7% on-time · ~107 flights/mo
Busiest calendar month
July
~164 flights/mo avg
Weakest calendar month
June
68.2% on-time · ~145 flights/mo
Cancellation Rate
1.4%
55 of 4,042 flights
Diversion Rate
0.2%
9 of 4,042 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
IAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
IAH on-time profileBOS - Boston
Full on-time, delay-cause, and seasonal performance for Boston, MA.
BOS on-time profileCompare the two airports
See IAH and BOS side by side on delays, cancellations, and reliability.
Compare IAH vs BOSOrigin-hub reliability standing
Mid-pack among IAH departures
From IAH, this corridor sits with 79 other 75–85% on-time routes out of 102 tracked departures, not the hub's reliability leaders (17 at ≥85%) and not the softest ( 6 below 75%). Destination: Boston · fleet on-time rank #3812 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to IAH–BOS.
Routes with a similar on-time rate
What the Data Says About IAH to BOS
The Houston to Boston corridor (IAH to BOS) posts a 78.1% on-time rate on the lower edge of the average band, based on 9,755 tracked flights. Late flights run 86.7 minutes behind on average. 9 carriers cover the 1,597-mile route; over the last 24 months, 55 of 4,042 flights were cancelled (1.4%) and 0.2% diverted.
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 88% on-time, while Oct 2025 came in at just 57% - a 32-point swing worth factoring into travel timing.
On the multi-year calendar, IAH–BOS peaks in February at 85.7% on-time while July carries the heaviest traffic (~164 flights per month) ; the softest month is June at 68.2%, a 17.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does IAH to BOS rank among US routes by traffic? ▼
How often are flights delayed from IAH to BOS? ▼
What is the cancellation rate for IAH to BOS? ▼
How far is the flight from IAH to BOS? ▼
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Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using IAH–BOS data
IAH–BOS is mid-pack at 78.1% on-time; month and carrier mix move more than the corridor headline.
- Compare IAH and BOS airport profiles: delay causes and top routes differ even on the same corridor. IAH airport
- If your dates flex, February (85.7% on-time) beats June (68.2%) on this corridor. Seasonal chart
- 4 other routes post a similar 78.1% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.