Question 1

Are the fares live or cached?

Accepted Answer

Live. Every call reads Google Flights at request time; nothing is served from a cache, so two calls a minute apart can return different prices.

Question 2

What does an empty result mean?

Accepted Answer

On a standard search, a 200 with an empty array means the search finished and Google Flights has no itineraries for that route and date. A search that did not finish returns a 5xx with error search_incomplete and a reason; it is not billed and is safe to retry.

Question 3

Is a round trip one request?

Accepted Answer

Yes. The round-trip endpoint prices both legs together and returns paired itineraries with one total_price and one booking link, billed as one search.

Google Flights Live Prices

Frequently Asked Questions