Flying to Bangkok with Avios
Overview
All of the points and surcharges referenced on this page are for a single journey (not return) and per person. Surcharges on a return flight may be less than double that of a single, depending on the element of the surcharge that relates to airport and country taxes.
To get from London Heathrow to Bangkok will require between 35,000 (off-peak days) and 40,000 (peak days) in Avios.
Upgrading to premium economy will cost an extra 15,000 Avios on top of economy. Premium economy seats cost 50,000 on off peak dates and 77,500 on peak dates
Business Class will require either 100,000 (off peak) or 110,000 (peak) Avios.
There is no first class cabin on flights from London Heathrow to Bangkok.
Find out which dates are peak, or off-peak in 2026 for BA.
Bangkok Avios needed table
| Cabin | Avios Needed (Off-Peak) | Avios Needed (Peak) |
|---|---|---|
| Economy | 35,000 | 40,000 |
| Premium Economy | 50,000 | 77,500 |
| Business | 100,000 | 110,000 |
How to make your Avios go further
If you’re based in the UK then there’s a way to make your Avios go even further, and that’s through a Companion Voucher. I’ve written extensively about these amazing vouchers. They’re not free in that you have to spend at least £15,000 on an Amex Card, but they’re absolutely worth it. Read my guide on is a BA companion voucher worth it? to understand how to use a 2-4-1 voucher. On top of that, you can also use a Barclays Cabin Upgrade voucher to reduce the number of points needed. You can get these by either being a Barclays Premier customer, or by hitting a spend level on a Barclaycard.
How can you search for reward seat availability?
BA offers a number of ways to search for reward seats: their “Reward Flight Finder”, their in-app “Reward Flights” section and just making a dummy booking. There are also third party tools that you can use, although I’ve managed to find plenty of seats without having to pay for a platform. I wrote about the best (and worst) ways to search for Avios availability. If you’re looking to book seats to a popular destination then planning ahead is critical: seats become available 355 days before the flight date.
Our Avios Calculator
You can use our interactive calculator to find the Avios needed between destinations. It’s easy to use, and contains up to date Avios and surcharge data for all the destinations that BA flies to across the World. Use our Avios points calculator.