When you enter a flight into TravelSmarter, the calculator instantly provides an estimate of the Tier Points and miles you could earn (such as Avios or AAdvantage Miles). This article explains how those estimates are calculated, why they are highly accurate, and why small differences may occasionally appear compared with your airline statement.
How earning rules are sourced:
TravelSmarter does not connect directly to airline systems to retrieve earning data. Instead, our team manually researches, builds, and maintains the points calculation rules for every airline programme and loyalty partner supported within TravelSmarter.
This includes:
Base earning rates - the points or miles awarded per flight based on route, distance, or ticket price depending on the programme.
Cabin class multipliers - each cabin (Economy, Premium, Business, First) earns at a different rate within each programme.
Fare family multipliers - within the same cabin, different booking classes (e.g. J, W, Q) earn at different rates. This is one of the most significant variables in any calculation.
Status bonuses - elite tier members earn bonus points on top of the base rate. The bonus percentage varies by tier and programme.
Partner earning rules - when you fly a partner airline and credit to a different programme (e.g. flying an Iberia flight and crediting to British Airways), the earning rate is set by the crediting programme, not the operating airline. These partner rules are researched and maintained separately for each programme combination.
Why our calculations are best estimates:
Airlines are not always fully transparent about how points are calculated. Published earning tables may be incomplete, rounded, or updated without notice. For this reason, TravelSmarter provides the most accurate estimates possible based on the information available, although small differences may occasionally appear compared with your official airline statement.
The most common reasons for a small discrepancy include:
Tax and fee variations: For programmes that calculate points on the net fare (ticket price minus taxes and fees), the exact tax breakdown can differ by booking channel, departure country, and airport. TravelSmarter uses standard tax assumptions that may not match the precise tax split on your specific ticket.
Airport-specific taxes: Some airports apply additional local taxes or levies that affect the net fare used in Tier Point calculations. These can vary and are not always publicly disclosed.
Partner earning rates: When crediting a flight to a partner programme, the earning rate is controlled by the crediting airline - not the operating one. These rates can change and are not always published in full detail.
Promotional multipliers: Airlines run limited-time earning promotions that may apply to your booking. TravelSmarter calculates standard rates and does not factor in promotional bonuses unless they are a permanent part of the programme structure.
Rounding differences: Airlines apply their own rounding logic to the final points figure. TravelSmarter may round differently, leading to a difference of a small number of points.
Recent airline rule changes: Airlines occasionally update their earning structures by adjusting cabin bonuses, changing the Tier Points awarded for certain flights, or revising partner earning tables. When this happens, there may be a short delay before TravelSmarter’s calculator reflects the latest rules. If you believe a calculation is based on outdated information, please let us know using the reporting option below.
For the vast majority of flights, TravelSmarter's estimate will be very close to - or exactly match - what your airline credits. The calculations are based on the same published rules your airline uses, applied consistently.
Where a small difference does appear, it is typically a matter of a few points or pounds of estimated value - not a significant deviation. The calculation is reliable enough to use for planning, goal-setting, and comparing flights before you book.
If you notice a larger than expected difference after a flight credits to your airline account, you can update the points on that flight manually to reflect the actual figure your airline posted. See How to Update Your Points and Tier Points Balance in TravelSmarter for instructions.
How we keep rules up to date:
Our logic team actively monitors airline and loyalty programme announcements, fare rule changes, and partner agreement updates. When a programme changes its earning structure - such as a new fare family rate, a revised partner earning table, or a tier benefit update - our team updates the calculation rules in TravelSmarter accordingly.
Because airlines do not always announce changes in advance or in full detail, there may be a short period between a programme change taking effect and TravelSmarter reflecting it.
Reporting a suspected algorithm issue:
If you believe TravelSmarter's calculation is significantly off from what your airline credited - because of a recent airline rule change we may not have captured yet - we want to know. Please contact support via the chat button with the following details:
Flight details: Airline, flight number, route, date, cabin class, and fare family.
Ticket price: The total paid including taxes.
TravelSmarter's estimate: The Tier Points and miles figure shown in the calculator.
Airline's actual credit: What your airline account shows (or what the airline's own calculator/booking confirmation projects, if the flight hasn't flown yet).
Source: A link or screenshot of the airline's published rule, if you have one.
This helps our logic team verify the discrepancy quickly and push a rule update if needed. In the meantime, you can manually correct the flight in your Flight Log so your totals stay accurate.
Next Steps:
To update a flight's points to match what your airline actually credited,
To update a flight's points to match what your airline actually credited,
If a calculation looks significantly different from what you expected
If a calculation looks significantly different from what you expected