Need help booking?
Unpublished phone-only deals available
HRI to IAH: distance & flight time
Mattala (Mattala Rajapaksa International Airport) → Houston (George Bush Intercontinental Houston Airport)
9,920 mi
15,965 km · 8,620 nm
19h 55m
estimated nonstop flight time
-10.5h
time difference · heading north
See live HRI→IAH fares Phone-only fares on this route — call free
Flight time details
9,920 miles nonstop takes roughly 19h 55m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10.5-hour time set-back when reading arrival times on your ticket.
The two airports
- HRI — Mattala Rajapaksa International Airport · Mattala, Sri Lanka
- 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 HRI
- WRZ · Weerawila Airport8 mi away
- KCT · Koggala Airport59 mi away
- ADP · Ampara Airport81 mi away
- RML · Colombo Ratmalana Airport93 mi away
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 HRI from IAH?
The flight distance from Mattala (HRI) to Houston (IAH) is 9,920 miles (15,965 km, 8,620 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HRI to IAH?
A nonstop flight takes about 19h 55m 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 Mattala and Houston?
Houston is 10.5 hours behind Mattala.
What is the cheapest way to fly from HRI to IAH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HRI–IAH that never appear on search engines, with no booking fees.