If you find you're missing some Avios or Tier Points on your account you can claim them back within six months of your flight. New members can even claim Avios and Tier Points for any British Airways flights flown in the three months before joining.

Yes, you can claim missing Avios points for flights you have already taken, but there are strict time limits you must follow in 2026. For British Airways flights, you can generally claim missing Avios for travel taken in the last 6 months. If you are a brand-new member of the British Airways Executive Club, you can even claim for flights taken up to 3 months prior to your joining date. To make a claim, you usually need your ticket number (a 13-digit code starting with '125' for BA) and your boarding pass details. For partner airlines (like American Airlines, Iberia, or Qatar Airways), the timeframe is also typically 6 months, but it may take up to 14 days after the flight before the "missing points" form will accept your request. It is a vital "pro-tip" to keep your paper or digital boarding passes until the points actually reflect in your account. If you are trying to claim points from non-flight partners (like hotels or car rentals), the window can vary from 3 to 12 months, and you will often need to provide a copy of the receipt or invoice as proof of stay.