Flights & trains: 11 real cases

Book a family member's return flight with ChatGPT agent, stopping before payment

A poster asked ChatGPT agent to book a return flight for their mother-in-law with the mother-in-law's specific seating and baggage preferences. They say it found the right flights, followed those instructions, clicked through the FlySafair website and stopped right before payment as asked; refining the prompt a few times made it more efficient.

Find flights with Manus (16-hour run, poor pick)

Asked to find flights, Manus ran for 16 hours and then picked what the poster called probably the most expensive option, with a 9-hour layover.

Plan a six-week Southeast Asia trip with Manus (hallucinated flights)

The poster used Manus to plan a 6-week Southeast Asia trip, and it hallucinated flights that didn't exist despite having browser access.

Plan a five-day city trip with flights in Google AI Mode's Canvas

ZDNet's tester asked Google's AI Mode trip-planning tool to plan a five-day New York City trip focused on historical sites and museums, then asked it to add flights; it researched Charlotte-to-NYC options and added a Flights tab with three major-airline choices to the itinerary. The tester says everything was well organized in Canvas, with Google reviews alongside each stop.

Find nonstop flights and a hotel under $400 a night with ChatGPT agent

BKA Content's Greg Secrist asked ChatGPT agent for nonstop Salt Lake City to Las Vegas flights for October 8–11 plus hotel rooms under $400 per night. It worked across Delta, Expedia and Booking.com but struggled with JavaScript-heavy pages and date pickers, sometimes looping or freezing; after almost nine minutes it returned some options they say they could have found manually in half the time.

Add flights from a confirmation email to Google Calendar with Comet

From a flight confirmation email, Comet Assistant opened Google Calendar and created entries with airports and flight numbers for a NJ–London–Dubai–NJ trip, but the entries didn't span the full flight times and the poster had to fix them by hand and re-prompt for the check-in reminders.

Find the cheapest Hamburg–Copenhagen train with ChatGPT agent

Asked (in German) to book the cheapest Hamburg–Copenhagen train for September, ChatGPT agent found a €63.26 fare after about ten minutes on the Deutsche Bahn site, then asked the author to log in; Comet was faster (3:40) but booked legs separately for €70.94.

Poster says:€63.26 vs €70.94 from Comet

Hunt last-minute holiday flights with multiple agents (failure case)

Claude Opus 4.5, Gemini 3 Pro and ChatGPT agent mode only matched a manual Google Flights search and were too slow as cheap fares vanished; the humans beat them by about 15%.

Find the best flight options on Skyscanner with ChatGPT agent

ChatGPT agent searched Skyscanner across flexible dates and returned the flight the author would actually book in 3 of 3 tests, though airline sites and 3D Secure blocked it from completing the booking.

Search for cheap flights with ChatGPT agent (failure case)

ChatGPT agent suggested flights costing $1,400 when the poster found an $850 option on their own.

Find the cheapest one-way flight across two departure cities with ChatGPT agent

From a vague brief, ChatGPT agent searched flights from Ljubljana or Zagreb to Bordeaux over a two-week window and found a €141.48 fare in 12 minutes.