Need help booking?
Unpublished phone-only deals available
HOU to GAI: distance & flight time
Houston (William P Hobby Airport) → Gaithersburg (Montgomery County Airpark)
1,221 mi
1,965 km · 1,061 nm
3h 7m
estimated nonstop flight time
+1h
time difference · heading northeast
See live HOU→GAI fares Phone-only fares on this route — call free
Flight time details
1,221 miles nonstop takes roughly 3h 7m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- HOU — William P Hobby Airport · Houston, United States
- GAI — Montgomery County Airpark · Gaithersburg, 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 HOU
- IAH · George Bush Intercontinental Houston Airport24 mi away
- EFD · Ellington Airport8 mi away
- AAP · Andrau Airpark19 mi away
- SGR · Sugar Land Regional Airport23 mi away
Near GAI
Frequently asked questions
How far is HOU from GAI?
The flight distance from Houston (HOU) to Gaithersburg (GAI) is 1,221 miles (1,965 km, 1,061 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HOU to GAI?
A nonstop flight takes about 3h 7m 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 Houston and Gaithersburg?
Gaithersburg is 1 hour ahead of Houston.
What is the cheapest way to fly from HOU to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HOU–GAI that never appear on search engines, with no booking fees.