KAYAK.ai
The advantage over a general chatbot planning your trip is inventory: this one is answering from KAYAK's live search rather than from training data, so the flights it names actually exist at the prices shown. It is free. The limit is that it is a front end to metasearch — it finds and compares, it does not book, and its own page warns the AI can be wrong.
Pros
- Runs against KAYAK's live provider inventory rather than a static model
- Covers flights, hotels, car hire, packages and cruises in one query
- Airfare trend analysis, deal alerts and a flight tracker sit alongside it
- Free with no account required to search
Cons
- Not a booking engine — the transaction happens on a third-party site
- The page itself carries a warning that the AI can make mistakes
- Results reflect KAYAK's referral partners, not the entire market