Cheap flights from London to Bangkok
Yes — prices are unusually low right now. The cheapest London–Bangkok return we've seen when we last checked is £353; the median across 254 observations is £445, and the lowest we've ever recorded is £353 (24 August 2026).
Prices last observed 26 August 2026 · 254 observations · 26 days of history
Based on 254 daily price observations by Flight Signal since 10 Jul 2026, the median return fare London–Bangkok is £445; the cheapest we've recorded is £353 (24 Aug 2026).
Is now a good time to book?
The cheapest London–Bangkok return we observed on 2026-08-26 (our most recent observation) is £353. Over 254 observations the median is £445 (cheapest quartile £409, dearest quartile £537). Our method: we compare the cheapest fare observed in the last 10 days against the full distribution of every fare we've recorded on this route — how the scoring works.
Cheapest by London airport
Lowest return fare we've attributed to each departure airport (metro-only "LON" fares are excluded — they can't be pinned to one airport).
| Airport | Cheapest observed |
|---|---|
| LHR | £374 |
| LGW | £353 |
| LTN | £445 |
| STN | £395 |
Track this route
Flight Signal watches London–Bangkok fares every day and pushes the genuine drops to your phone — scored against this exact history, with a booking link.
Get deal alerts for BangkokFrequently asked
What is the cheapest London to Bangkok flight?
The cheapest return fare Flight Signal has observed on London–Bangkok is £353, recorded on 24 August 2026. Across 254 observations the median is £445.
Is now a good time to book a flight from London to Bangkok?
Yes — prices are unusually low right now. The cheapest London–Bangkok return we observed on 2026-08-26 (our most recent observation) is £353. Over 254 observations the median is £445 (cheapest quartile £409, dearest quartile £537).
How much does a return flight from London to Bangkok usually cost?
The median observed return fare is £445, with most fares between £409 (cheapest quartile) and £537 (dearest quartile), based on 254 daily observations.
Which London airport is cheapest for flights to Bangkok?
In our observations the cheapest fare to Bangkok departed from LGW (£353). We track all five London airports — Heathrow, Gatwick, City, Luton and Stansted.
Prices are cached observations from licensed fare data, indicative until you check live. Flight Signal never auto-books.