United Airlines IAH to BOS on-time performance
United Airlines nonstop flights from Houston to Boston · Aug 2025 – Jul 2026
On-time arrivals
76%
arrived < 15 min late
Cancelled
1.1%
17 flights
Avg arrival delay
18 min
70 min when late
Rank on route
#1 of 2
route average 72% on time
Key facts
- United Airlines flights on IAH to BOS arrived on time 76% of the time in Aug 2025 – Jul 2026.
- 1.1% were cancelled, and 10% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 72% on time overall.
- The largest source of delay minutes was air traffic control & airport congestion (52%).
On-time trend by month
Why this airline's flights were late
- Air traffic control & airport congestion52%
- Late-arriving aircraft30%
- Airline (crew, maintenance, cleaning, fueling)13%
- Extreme weather5%
- Security0%
Other airlines on IAH to BOS
- JetBlue57% on time · 40 min avg delay
Full IAH to BOS comparison →
United Airlines on-time record across all routes →
1,559 United Airlines flights tracked on this route; 17 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.