Never booked connecting flights. DO NOT USE! My family friends (Husband and Wife) just recently used Trip. com to help book roundtrip flights to Vietnam from Sweden (came to about $2200 for 2 tickets) and it happened to be with Swiss Airlines and Vietnam Airlines. They got the receipts, confirmation and everything is correct... until arriving at the airport. The airport counter said that one of the 2 tickets only have one flight booked through Swiss Airlines and that a flight with Vietnam Airlines does not exist in the database (the other one did show). The husband never boarded the flight as Swiss Airlines would stop at Mumbai - which requires a visa for entry, as he does not have because the plan was never to enter Mumbai, he will transit through Mumbai to Vietnam - therefore lead to him being denied boarding at the swedish airport in the first place. Trip. com is refusing to refund, rebook or give any sort of compensation for their mistake. Even though both flights are paid for. Trip. com says that this is out of their control, but what could he have done differently to avoid this situation?? His receipts literally provides flight details with Vietnam Airlines, how could the flight not show up on the airport counters database is my quesiton. My only suspicion, is that they never actually booked it. Here's our experience dealing with them. July 2024.