Need help booking?
Unpublished phone-only deals available
SEN to REP: distance & flight time
Southend (Southend Airport) → Siem-reap (Siem Reap International Airport)
6,042 mi
9,724 km · 5,251 nm
12h 19m
estimated nonstop flight time
+6h
time difference · heading east
See live SEN→REP fares Phone-only fares on this route — call free
Flight time details
6,042 miles nonstop takes roughly 12h 19m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- SEN — Southend Airport · Southend, United Kingdom
- REP — Siem Reap International Airport · Siem-reap, 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 SEN
- LGW · London Gatwick Airport48 mi away
- LHR · London Heathrow Airport50 mi away
- RCS · Rochester Airport17 mi away
- LCY · London City Airport28 mi away
Near REP
- BBM · Battambang Airport45 mi away
- KZC · Kampong Chhnang Airport95 mi away
- PXR · Surin Airport103 mi away
- TDX · Trat Airport128 mi away
Frequently asked questions
How far is SEN from REP?
The flight distance from Southend (SEN) to Siem-reap (REP) is 6,042 miles (9,724 km, 5,251 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEN to REP?
A nonstop flight takes about 12h 19m 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 SEN to REP?
Nonstop service on SEN–REP 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 12h 19m nonstop estimate.
What is the time difference between Southend and Siem-reap?
Siem-reap is 6 hours ahead of Southend.
What is the cheapest way to fly from SEN to REP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEN–REP that never appear on search engines, with no booking fees.
Why are some SEN to REP fares phone-only?
Consolidator contracts let us sell certain SEN–REP 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.