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BWI to KOS: distance & flight time
Baltimore (Baltimore/Washington International Thurgood Marshall Airport) → Sihanoukville (Sihanoukville International Airport)
8,999 mi
14,483 km · 7,820 nm
18h 7m
estimated nonstop flight time
+12h
time difference · heading north
See live BWI→KOS fares Phone-only fares on this route — call free
Flight time details
8,999 miles nonstop takes roughly 18h 7m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- BWI — Baltimore/Washington International Thurgood Marshall Airport · Baltimore, United States
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
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 BWI
- DCA · Ronald Reagan Washington National Airport30 mi away
- IAD · Washington Dulles International Airport45 mi away
- FME · Tipton Airport8 mi away
- ANP · Lee Airport17 mi away
Near KOS
- PQC · Phu Quoc International Airport37 mi away
- PNH · Phnom Penh International Airport106 mi away
- VKG · Rach Gia Airport110 mi away
- KZC · Kampong Chhnang Airport132 mi away
Frequently asked questions
How far is BWI from KOS?
The flight distance from Baltimore (BWI) to Sihanoukville (KOS) is 8,999 miles (14,483 km, 7,820 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BWI to KOS?
A nonstop flight takes about 18h 7m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from BWI to KOS?
Nonstop service on BWI–KOS depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 18h 7m nonstop estimate.
What is the time difference between Baltimore and Sihanoukville?
Sihanoukville is 12 hours ahead of Baltimore.
What is the cheapest way to fly from BWI to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BWI–KOS that never appear on search engines, with no booking fees.
Why are some BWI to KOS fares phone-only?
Consolidator contracts let us sell certain BWI–KOS tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.