Published 28 May 2026 | Updated 8 September 2026 by Jane Robinson
Bangkok from £589 return is the sort of fare that makes a proper Thailand trip feel much easier to justify, especially when the cheapest Thai Airways direct fares we found are sitting around £1,011.
We found the £589-£612 fare band on Air France for Heathrow and Gatwick to Bangkok, travelling in the second half of September. KLM is showing a similar Bangkok fare via Amsterdam, so this looks like an Air France-KLM fare rather than a one-off oddity.
The best bit is the timing. Late September sits after the school-holiday rush has faded but before the winter peak starts pushing long-haul fares back up, which is why this window keeps coming up as good value.
This is not a nonstop fare, so you’ll change in Paris or Amsterdam depending on which Air France-KLM option you choose. That’s the trade-off, but at roughly £400 less than the Thai Airways direct fare floor, it’s a very fair one if you don’t mind a connection.
Best fit: travellers who can be flexible around late September and would rather save the money than pay for the nonstop. If you’re going for a short trip, check the connection times carefully before booking, because Bangkok is far enough away that a clumsy layover can make the journey feel much longer.
What we checked
- Air France: London Heathrow and Gatwick to Bangkok, one stop, from £589 return in economy for a 20-28 September window. Checked 8 September.
- KLM: a comparable Bangkok fare via Amsterdam in the same late-September window.
- Thai Airways: Bangkok fares from London showing from about £1,011 return, non-stop.
How to book
Go to the Air France London to Bangkok fare page and search around 20-28 September. You can also check the KLM London to Thailand page if you prefer the Amsterdam connection.
Useful info
If you’re weighing up dates, our guide to the best time to visit Thailand from the UK explains the main weather and value trade-offs.
Jane Robinson is Senior Editor at Flight Tribe. She has a Master’s in English and Journalism, and writes about flight deals, holiday offers and practical ways UK travellers can spend less without wasting time on weak promotions. Jane has spent time living and working across Asia and New Zealand, which gave her a lasting interest in how people travel, eat, move around and spend their free time in different places.
At Flight Tribe, her work focuses on verified prices, realistic travel dates, booking terms and whether a deal is actually worth attention.
How Jane works
Jane checks offers against live supplier pages wherever possible, including prices, dates, departure points, baggage rules and booking conditions. She is quietly sceptical of anything that sounds too good to be true, and helps keep Flight Tribe’s travel advice useful, honest and easy to act on.
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