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GAI to IAH: distance & flight time
Gaithersburg (Montgomery County Airpark) → Houston (George Bush Intercontinental Houston Airport)
1,210 mi
1,947 km · 1,051 nm
3h 6m
estimated nonstop flight time
-1h
time difference · heading southwest
See live GAI→IAH fares Phone-only fares on this route — call free
Flight time details
1,210 miles nonstop takes roughly 3h 6m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- GAI — Montgomery County Airpark · Gaithersburg, United States
- IAH — George Bush Intercontinental Houston Airport · Houston, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near GAI
Near IAH
- DWH · David Wayne Hooks Memorial Airport14 mi away
- IWS · West Houston Airport23 mi away
- AAP · Andrau Airpark23 mi away
- HOU · William P Hobby Airport24 mi away
Frequently asked questions
How far is GAI from IAH?
The flight distance from Gaithersburg (GAI) to Houston (IAH) is 1,210 miles (1,947 km, 1,051 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to IAH?
A nonstop flight takes about 3h 6m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Gaithersburg and Houston?
Houston is 1 hour behind Gaithersburg.
What is the cheapest way to fly from GAI to IAH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–IAH that never appear on search engines, with no booking fees.