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Booking instructions for agents

When you make a booking using a GDS for an On Business member on a British Airways flight, or on a qualifying flight with eligible partner airlines, you will need to enter their On Business membership number following the instructions below.

The On Business number must be entered using one of the following entries (please leave spaces between letters where shown).

The entry can only be added to flights with a BA flight number.

Booking system entries

Abacus entry 3OSI BA BTOB./123456XX
Amadeus entry SK BTOB BA-/123456XX
Galileo entry SI.BA*BTOB./123456XX
Sabre entry 3OSI BA BTOB./123456XX
Worldspan entry 3OSI BA BTOB./123456XX
  1. Replace 123456XX with the actual On Business membership number.
  2. If a traveller is a member of the British Airways Executive Club, or a member of a oneworld frequent flyer programme please continue to include their membership details in the booking.

Important note for Qantas codeshare flights

If the booking contains a Qantas flight number but is operated by British Airways, please enter the On Business membership number in ‘remarks’ and email the booking reference, Company name and On Business membership number to the respective email addresses:

For bookings made in:

Australia -

Singapore -

Thailand -