Introduction
Unlike avios points which can be earned through a multitude of activities, tier points can only be earned through the pursuit of flying and are earned on all commercial BA and oneworld fares (subject to a few exceptions). The number of tier points you accrue is entirely dependent on the fare class (or selling class in BA lingo) your tickets are booked in.

The recent exception to this is the recent Amex promotion launched in late 2023 where you can earn a small amount of tier points for certain levels of spend. Starting at 100 TPs for £15,000, it isn't something which will remotely feature in this thread though.

See here for more information on the Amex tier point promotion.

Exceptions to tier point earning
Flights on non-oneworld partners, if booked under the BA codeshare, should earn tier points based on BA being the marketing carrier. Please note, while flights on non-oneworld BA partners may earn avios, they may not earn tier points. See here and also the tables and calculator on ba.com for more details.

With regard to Aer Lingus there have been recent changes which mean flights do earn tier points. Please see the relevant threads below:
EI earning for trans-atlantic flights
EI earning for other flights

As of 11 January 2017 there were also some big changes to tier point earning on AA domestic two cabin services. On these two cabin services the domestic first cabin now earns business tier points and avios, see post 6 below for more details.

oneworld member changes

Leaving
LATAM (LA & JJ) left oneworld - On 1 May 2020 LATAM left the oneworld alliance. After this date, the expectation is you would not be able to earn tier points if booked on LA or JJ marketed and operated flights - you may earn some avios though when crediting to BAEC. Here is the announcement on the oneworld website along with some FAQs. LATAM to leave oneworld effective 1 May 2020

Joining
- Royal Air Maroc (AT) joined oneworld - On 1 April 2020 Royal Air Maroc joined the oneworld alliance. Royal Air Maroc Express (FN), the regional subsidiary, also become an affiliate member of oneworld.
- Alaska Airlines (AS) joined oneworld - On 1 March 2021 Alaska Airlines joined the oneworld alliance.
- Hawaiian Airlines (HA) joining oneworld - as of late 2023, Alaska Airlines is in the process of acquiring Hawaiian Airlines. The expectation is that Hawaiian will still operate as a separate brand, and will also join the oneworld alliance. There is no set date for this yet.
- Oman Air (WY) joining oneworld - Oman Air will be joining the oneworld alliance sometime during 2025, possibly in the second quarter. After they join, the expectation is you would earn avios and tier points on WY operated & marketed flights.
- RwandaAir (WB) joining oneworld - RwandAir has announced that they are looking to join the oneworld alliance. There is no clear date for this yet, it may be 2025.
- Fiji Airways (FJ) joining oneworld - The flag carrier of Fiji and the South Pacific, Fiji Airways has been a oneworld connect partner for more than five years. They are expected to become a full member during 2025.Starlux Airlines (JX) possibly joining oneworld - The Taiwanese based airline is pursuing membership of oneworld. This may possibly happen by the end of 2025

Earning chart
Below is the full earning chart which covers BA flights and oneworld partner flights.



As of 1 April 2017 BA domestic flights have been re-classified in to two cabins with Club Europe and Euro Traveller. Earnings on UK internal flights fall in line with standard ET and CE rates. Y, B, H will continue to earn 20 tier points, but R, I, D, C, and J will now be sat in the CE cabin and earn 40 tier points per flight. The table above reflects this change.

† This table now reflects our understanding that the tier points earn rate for lowest economy is applicable to some non-BA flights as well as BA flights.

The ba.com calculator (which can be found under the Flight Calculator link here) has also been updated to reflect this. The page also provides lists for all oneworld carriers for tier point earnings. Some booking classes on some carriers will not earn tier points so prior to booking you should check the relevant table for that carrier – if a booking class is not included in the table you must assume it will not earn any tier points.

Also note that if you’re booked to travel from the UK to Australia, but with a stop-over (i.e. booked as two flight numbers), it will count as two long haul flights, so you will actually earn slightly more than if it was booked as a single flight (e.g. 300=160+140 in Club vs. 240 for straight through).



When using the calculator on ba.com a breakdown of tier points for each booking class is now shown for BA and all other oneworld partner as shown below. For example, for JFK-MIA economy earnings range from 5 to 20 depending on what booking class you have.

The lowest booking classes in economy for all carriers are:

Lowest economy booking classes for TP earnings
BA: G, O, and Q
AA: B, G, N, O, and Q
CX: K, L, M, N, Q, S, and V
AY: A, G, N, O, Q, R, S, W, and Z
IB: A, O, and Q
JL: N, and Q
LA: A, G, O, and Q
MH: L, S, and V
QF: G, K, L, M, N, O, Q, S, and V
QR: G, O, T, and W
RJ: H, K, L, M, N, O, Q, S, V, and W
S7: L, M, N, O, Q, R, S, T, V, and W
UL: N, O, and Q

See Globaliser’s charts here for more details.