Route brief · LON → BKK
London → Bangkok
$462
−14% vs typical
seasonal median $540 · difference $78
Nov 18 – Dec 1 · 13 nights
China Southern1 stop
- Usual monthly lows
- $494–$664
- Board rank
- Stronger than 35%
- Route sample
- 10 observed months
Cached fare — the booking search re-prices live before you pay.
Destination briefBKKBangkokThe backpacker cliché that still delivers: gold temples, boat noodles, $12 street-food feasts.Best windowNov–FebAirportsSuvarnabhumi (BKK) · Don Mueang (DMK)All routes into BangkokWhen this route gets cheap.
Cached-fare history: across 10 months, Nov is the cheapest for LON → BKK. Best time to be there: Nov–Feb.
Fares bottom out in November around $462 and peak in July near $1,086 — a $624 spread across the 10 months we track. The cheapest itinerary we are tracking makes one stop and takes about 15 hours outbound, on a 13-night trip — ticketed under China Southern, which on a connecting fare need not operate every leg. At $462 for 9,532 km each way, that works out to about $24 per 1,000 km flown. That is well under the $44 that long-haul fares on this board typically run. Of the 20 departure cities we track at a similar distance from Bangkok, this is the cheapest right now — though Sydney is within a few dollars. It is also the 3rd cheapest of the 36 routes of similar length we watch out of London.
Cheapest day in the next 3 months: Nov 27 · $487 (20% below median)
Tap any day → live search
The median cached fare across this calendar is 12% lower than when tracking began on Aug 8 — $614 then versus $538 now, across 7 recorded snapshots. This is a calendar-level trend, so an individual deal above can be lower. The lowest single day we have seen here is $480, on Nov 9.
September 2026
October 2026
Cheapest in Nov · around $462
14% below the $540 typical fare
Cheapest round-trip fare found per month · London → Bangkok · cached-price history
Route facts
- Airports
- Heathrow (LHR) · Gatwick (LGW) · Stansted (STN) · Luton (LTN) ↔ Suvarnabhumi (BKK) · Don Mueang (DMK)
- Flight time
- ~15 hours outbound
- Distance
- ~9,532 km each way
- Typical price
- $540 round-trip (seasonal median)
- Airlines on the board
- China Southern
- Itineraries
- Connections on current fares
- Best months to visit
- Nov–Feb
LON → BKK, answered.
Is $462 a good price for London to Bangkok?
Only slightly. The seasonal median is around $540 round-trip and this fare is 14% under it, about $78. We do not call a drop notable until 20%, so this is an ordinary price for the route rather than a reason to hurry.
What is the cheapest month to fly from London to Bangkok?
Across 10 months of cached-fare history, Nov comes out cheapest on this route. The best months to actually be in Bangkok are Nov–Feb — when those overlap, that's your window.
How far in advance should I book LON → Bangkok?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. What we can measure is which month is cheap: across 10 months of cached fares, Nov comes out lowest on this route. See /guides/what-moves-a-flight-price/ for what does move a fare.
Are there nonstop flights from London to Bangkok?
The current cheapest fares involve a connection, ticketed under China Southern. Nonstop options exist on many dates at higher prices — check the live search for your exact dates.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on September 1). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Bangkok?
Lock the flight first — then compare stays for Nov 18 – Dec 1 · 13 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next LON → BKK drop reaches you as soon as we find it.
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