United AirlinesUA
Flights UA551 varies Sa Su
live
Direct flights from Houston (IAH) to George Town (GCM): 2 nonstop departures observed each week across 1 airline. The median arrival is 10 minutes late. No cancellations were recorded across the 2 tracked flights. The nonstop covers 1,844 km, an estimated 2 hours 52 minutes in the air. Measured by Pro Flight Search from live flight boards at Houston and George Town. Updated 4 October 2026 at 22:23 UTC.
IAH
Houston
smooth · +2
GCM
George Town
tracking
1,844 km · ~2h 52m est.
Running clean · 1 airline · 2x weekly · nonstop
100 / 100
route health from live IAH and GCM delay boards
Median arrival delay is +10 min. 0 of 2 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+10 minacross the last 2 operated legs
Flight time~2h 52mestimated from route distance
Weekly departures2x1 direct airline on the leg
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsnext sweep in 120s
How the Houston to George Town route actually runs
Pro Flight Search records official board updates for nonstop IAH to GCM 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 — Houston (IAH) to George Town (GCM) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/IAH-GCM
IAH to GCM questions
Is IAH–GCM 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 IAH to GCM?
Great-circle distance is 1,844 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 160–188 min gate-to-gate on this route.
How often does IAH–GCM fly?
United Airlines runs the route with about 2 flights a week (sat–sun). 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 IAH and arrival-side delay at GCM, 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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