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CSM to HRI: distance & flight time
Clinton (Clinton Sherman Airport) → Mattala (Mattala Rajapaksa International Airport)
9,561 mi
15,387 km · 8,308 nm
19h 13m
estimated nonstop flight time
+10.5h
time difference · heading north
See live CSM→HRI fares Phone-only fares on this route — call free
Flight time details
9,561 miles nonstop takes roughly 19h 13m 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 gain when reading arrival times on your ticket.
The two airports
- CSM — Clinton Sherman Airport · Clinton, United States
- HRI — Mattala Rajapaksa International Airport · Mattala, Sri Lanka
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 CSM
- HBR · Hobart Regional Airport26 mi away
- LTS · Altus Air Force Base47 mi away
- FSI · Henry Post Army Air Field (Fort Sill)66 mi away
- LAW · Lawton Fort Sill Regional Airport69 mi away
Near HRI
- WRZ · Weerawila Airport8 mi away
- KCT · Koggala Airport59 mi away
- ADP · Ampara Airport81 mi away
- RML · Colombo Ratmalana Airport93 mi away
Frequently asked questions
How far is CSM from HRI?
The flight distance from Clinton (CSM) to Mattala (HRI) is 9,561 miles (15,387 km, 8,308 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CSM to HRI?
A nonstop flight takes about 19h 13m 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 Clinton and Mattala?
Mattala is 10.5 hours ahead of Clinton.
What is the cheapest way to fly from CSM to HRI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CSM–HRI that never appear on search engines, with no booking fees.