Can my website show my customer how much baggage is included before they book a flight?

Yes, in most cases your website can show the baggage allowance before your customer pays, because that information comes from the airline through the flight API along with the fare. For a lot of full service airlines you will see the cabin bag and the checked bag allowance, either as a number of pieces or as a weight, and it can be displayed next to the fare so the customer understands what they are buying.

How complete this is depends on the airline and on the supplier the fare came from. Some airlines return the allowance right in the search results, so you can show it on the first page the customer sees. Others only return it when the fare is priced again just before booking, which means the detail appears a step later in the flow. Low cost airlines very often include no checked bag at all in the base fare and sell it as a paid extra, so what your customer sees there is the option to add a bag rather than an allowance.

We would be honest that this is supplier data, not something we can invent. Where an airline sends nothing, or sends only a short fare description, your website cannot show more than it was given. It is also worth remembering that the airline rules at the airport are the final word, so we normally advise showing the allowance as a guide and keeping a short line telling the customer to check the airline conditions, especially on connecting flights where two carriers may apply different rules.

Run a few test searches on the routes you sell most and compare what shows with the airline website, then tell us which routes look thin so we can check what your connected suppliers are returning.