United AirlinesUA
Flights UA3875 20:11 Tu · UA3871 21:08 Su
live
Direct flights from Winston Salem (INT) to Houston (IAH): 2 nonstop departures observed each week across 1 airline. The nonstop covers 1,564 km, an estimated 2 hours 30 minutes in the air. Measured by Pro Flight Search from live flight boards at Winston Salem and Houston. Updated 6 November 2026 at 06:34 UTC.
INT
Winston Salem
tracking
IAH
Houston
smooth · +0
1,564 km · ~2h 30m est.
Running clean · 1 airline · 2x weekly · nonstop
100 / 100
route health from live INT and IAH delay boards
Flight time~2h 30mestimated from route distance
Weekly departures2x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
United Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysAirports right now
live boardsnext sweep in 120s
How the Winston Salem to Houston route actually runs
Pro Flight Search records official board updates for nonstop INT to IAH flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search: Winston Salem (INT) to Houston (IAH) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/INT-IAH
INT to IAH questions
Is INT–IAH running on time right now?
Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from INT to IAH?
Great-circle distance is 1,564 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 140–164 min gate-to-gate on this route.
How often does INT–IAH fly?
United Airlines runs the route with about 2 flights a week (sun, tue). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at INT and arrival-side delay at IAH, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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