The Good, the Bad and the Ugly.

Within Europe just changing the country/language (both have a separate effect btw.) changes the prices, availability etc. Currently France/French offers quite good discounts compared to .at, .de. and .us

Yes, trip.com in Europe is selling more and more third party flight-tickets and Hotel reservations under their umbrella on their website. With Hotels it is easy to find out, because the reservation no. starts with e.g. EXP for Expedia, the reviews are from Hotels.com which is part of the Expedia group etc.

With flight reservations it sometimes sucks, because the Trip.com own flights are reserved for 20-30 minutes once you start the booking process, the third party are only reserved once you hit the pay button...and by then they are sometimes already unavailable and one has to start all over again.

Sometimes searching via Skyscanner, which is now also part of Trip.com, on a PC offers the same discounts like searching via the APP.

When it comes to searching for cheap flights worldwide (except China) in Europe nowadays idealo and jetcost (again depending on the country you chose) beat Trip.com most of the times. However, like trip.com, they move the marketing budget from country to country on a regular basis, and with Jetcost you might sometimes need a Diners Club or Mastercard Viabuy creditcard to avail of the cheap offers.