Find out how many miles you need to travel to Riga
Overview
You'll need at least 11,750 to fly from London to Riga in economy, and that's on an off-peak day. At peak times it will cost 12,750 Avios.
The Business Class cabin requires an extra 20,000 Avios versus the Premium Economy cabin. 20,000(off peak) or 22,250 (peak) Avios.
There is no premium economy or first class cabin on flights from London to Riga.
Avios needed table
Cabin
Avios Needed (Off-Peak)
Avios Needed (Peak)
Economy
11,750
12,750
Business
20,000
22,250
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, but they're absolutely worth it. Read my guide on is a BA companion voucher worth it?
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.