The flying is not the problem. The order you do things in is. Nearly every pricey run happens because people look at fares before they have decided what they are actually willing to pay. This is how to flip that around: find your real gap, set a ceiling, then model it.
You know how it goes. You check your balance in early February, realise you are somehow 800 points short with only seven weeks to go, and start frantically searching for flights. Everything is pricier than you hoped, because half the country is doing exactly the same thing and the airline is wise to it. You book it anyway, because the thought of losing a whole year’s progress is too much. And before you know it, you have paid over the odds for more status than you actually needed.
If you are after the nitty-gritty maths, the tier point run guide covers how a run actually earns, and the cheapest tier point runs page has worked examples. Here, the subject is the decision-making, not the destination.
Most tier point runs go off the rails in exactly the same way, every time. And the flying is rarely the problem. Nearly every pricey run happens because people start looking at fares before they have even decided what they are actually willing to pay. Fix the order and you fix most of the cost.
Not the number in the app. The number in the app is usually wrong, in your favour or against, and both are expensive. It is wrong in your favour if you are counting points from flights that have not credited yet, or from a card bonus you have not actually triggered. It is wrong against you if you have flights booked for later in the year that you have forgotten to count, which happens more often than you would think, and sometimes means you did not need to do a run at all.
So before you do anything else, add up three things.
Your gap is just the threshold minus that total. Write it down somewhere. It is honestly the most important number in this whole exercise, and hardly anyone actually starts with it. The BA tier points calculator will count your booked flights properly, sector bonus and all.
This is the bit that actually saves you money, and it only takes a minute. Decide now: what is the most you are willing to pay per tier point? Not the total you are willing to spend, because that number always creeps up at 11pm when you are tired. Per point. It is much harder to talk yourself out of later.
There is a published hard ceiling, and hardly anyone uses it
Add-ons earn two tier points per pound. Bags, seat selection and SAF contributions all earn at double the rate of the fare itself. Two points per pound is another way of writing fifty pence per tier point, it is fixed, and it applies to any booking. So here is your test: if a run works out at more than 50p per tier point, there is a cheaper way to get those points. You would be better off booking a cheaper flight and spending the difference on bags and seats.
That benchmark has its limits. You need a booking to attach add-ons to, and there is only so many bags one person can realistically buy. If you were going to check a bag anyway, it is better than 50p, because you actually get the bag too.
One published cap applies to only part of this. Sustainable Aviation Fuel contributions are capped at 2,000 tier points per membership year, which at the 2 points per pound rate is £1,000 of contributions. Bags and seating carry no published cap. So the 50p benchmark holds, with the note that the SAF portion of it runs out at 2,000 points a year and the rest does not. Two thousand points is well over halfway to Bronze and more than a quarter of the way to Silver, so it is worth planning around, not just leaving in the small print.
Because the sector bonus is fixed but the fare is not, you can work out the exact eligible fare where a return run hits that 50p per tier point mark. Go above it and you are overpaying; stay under and you are doing well. The maths is simple for once: on a return, the break-even eligible fare is just twice the sector bonus.
| Cabin and fare type (return) | Bonus per sector | Break-even eligible fare |
|---|---|---|
| Euro Traveller, hand baggage only | 0 | No bonus at all |
| Euro Traveller Plus | 75 | £150 |
| Euro Traveller Semi-Flex | 175 | £350 |
| Club Europe | 175 | £350 |
| Club Europe Semi-Flex | 275 | £550 |
| World Traveller | 150 | £300 |
| World Traveller Plus | 275 | £550 |
| Club World | 500 | £1,000 |
| First | 650 | £1,300 |
So a Club Europe return is good value at any eligible fare under about £350, and not so much above that. Club World needs to come in under a thousand pounds of eligible fare before it beats simply buying bags, which is probably why most Club World “runs” are really just holidays with a nice bonus.
Two things to watch with that table. Eligible fare is not the same as the ticket price: it is the fare plus the airline’s own carrier-imposed charges, but it does not include air passenger duty or airport taxes, which on a cheap short-haul can be most of what you pay. And hand baggage only fares earn no sector bonus at all, so they are almost the worst thing you could book for a run, even if they look cheapest at first glance.
You might want to set your own ceiling lower than 50p. Plenty of regular runners will not go above 35p. The main thing is to pick your number now, while you are calm, not when you are staring at a booking screen late at night.
Now, and only now, go and look at flights. Put your options through the tier point run calculator, which does all the sums for you: eligible spend, sector bonuses, total points, cost per point, the lot. Try at least three or four genuinely different options, not just one, because the results are often not what you would expect. The cheapest ticket is very often not the cheapest run, and the route you had in mind is often beaten by somewhere you had not even considered.
Three things worth modelling every time:
Then compare every option against the ceiling you wrote down in step two. Anything above it gets the chop. That is what the ceiling is for, and it only works if you set it first.
Since 1 April 2026 the bonus depends on both the cabin and the fare type within it, which is the detail most older guides have not caught up with. The upshot is that “which cabin” is now the second question, not the first. A semi-flex fare in Euro Traveller and a standard Club Europe fare both earn a 175 point sector bonus, so a return in either gets you 350 bonus points. The only thing separating them is the fare. Whichever is cheaper wins on cost per point, and it is not always the one you would expect.
Here is the bit that catches most people out: the cheapest fare on the page earns no bonus at all. Hand baggage only fares are excluded. On a short-haul return, that is the difference between a few dozen tier points and several hundred, for a fare difference that is usually less than the bag you were probably going to buy anyway.
If you want the rest of the ways points go missing without anybody noticing, our free newsletter covers seven of them, and they are all free to fix.
The membership year ends on 31 March for everybody at once, which means demand for cheap short-haul seats is not spread evenly across the year. It climbs from January and peaks in the last six weeks. That is a self-inflicted cost, and it is avoidable if you do steps one and two in September instead of February. You do not need to fly early. You just need to decide early, because fares for spring travel bought in the autumn are almost always better than the same seats in the new year.
One hard deadline catches people out: points have to actually credit before the year closes, and that is not instant. A flight taken in the last days of March might not post in time, and card or partner earning can take even longer. If you are running close to 31 March, build in a fortnight of slack and do not book anything in the final week expecting it to count.
A short list, in the order that matters.
Not counting what they already have
That is why step one exists. You would be surprised how many runs are booked by people who were already over the line and just had not added up their own bookings.
Buying the points twice
Booking a run, then panicking and booking a second one because the first has not credited yet. Give the first one time to post before you buy anything else.
Leaving it to February
The single biggest avoidable cost in the whole thing. The same seat is just more expensive when forty thousand other people want it for the same reason.
Sometimes the maths says do nothing, and that is a perfectly good result, not a failure. If your gap is large, the deadline is close, and every option is over your ceiling, the honest answer is often to let the year go, keep the money, and start the next membership year deliberately rather than finish this one in a panic. Status you bought at a bad price is still a bad price, and the lounge does not know how much you paid.
Working out whether a given tier is worth chasing for you at all, rather than just how cheaply you can do it, is a bigger question than this page can answer. It depends on how you actually fly, what the benefits are worth to you, and where you are in the year when you ask.
Figures and rules checked against ba.com. Illustrative examples are illustrative; confirm fares and earning on ba.com before booking. Nothing here is financial advice.
The AviosArcana Editorial Team
We decode UK air-miles programmes in plain English, cross-checking every figure against the programmes’ published terms. We are independent and this is general information, not financial advice.