London to Siem Reap (LHR–SAI) — Airlines, Schedules & Connections

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No nonstop flights on this route. connecting options below.

✦ 1-STOP
✧ 2-STOP Loading...
London to Siem Reap
Connecting service available through multiple hubs.
+7h ahead 6 1-stop hubs

While no nonstop service exists between LHR and SAI, connecting options are available through 6 hubs.

Also explore LHR Routes SAI Routes LHR Live Flights SAI Live Flights
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for LHR to SAI.
1-STOP
One-Stop Connections
6
Hubs
~17h
Fastest
~30h
Longest
PVG ~17h 33m BKK ~22h 3m HAN ~22h 55m SGN ~23h 9m KUL ~29h 33m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
332
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
+7h
Siem Reap is 7 hours ahead of London.
LHR: GMT · SAI: +07

When it's 6:00 PM in London, it's 1:00 AM (next day) in Siem Reap.
Getting to LHR

Heathrow Express runs from London Paddington to T5 and T2/T3 in 15–21 minutes (£37 single, cheaper booked online or via the Heathrow app). Elizabeth line (Crossrail) is a lower-cost alternative; Paddington to T5 in 34 minutes from £13.50 with an Oyster/contactless cap of £14.90. The Elizabeth line also serves central London stations including Bond Street, Farringdon, and Liverpool Street.London Underground Piccadilly line serves all terminals (T2/T3/T4/T5) from central London in 40–60 minutes (£6 with Oyster). Taxis (black cabs) from central London cost £55–90 depending on traffic. Coach services from Victoria Coach Station (National Express) cost from £10 booked in advance.

Facts

LHR–SAI Quick Facts

Key statistics for the London to Siem Reap route.
Route details
Time difference+7 hours
Airlines (nonstop)0
1-stop connections6 hubs
Origin: LHR
Full nameLondon Heathrow Airport
IATA / ICAOLHR / EGLL
TimezoneEurope/London
Passengers/yr83.9M
Elevation83 ft / 25 m
Destination: SAI
Full nameSiem Reap-Angkor International Airport
IATA / ICAOSAI / VDSA
TimezoneAsia/Phnom_Penh
Elevation191 ft / 58 m
FAQ

Frequently Asked Questions

Common questions about LHR to SAI flights.
Yes, 1-stop connections are available through PVG, BKK, HAN, SGN, KUL and SIN. These options provide additional schedule flexibility.
Siem Reap is 7 hours ahead of London.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Connecting Options and Alternatives

6 one-stop connections are available, with the fastest taking approximately 17 hours via PVG. Two-stop connections are also available via intermediate hubs.