I TRIED USING CHATGPT TO PLAN MY LISBON TRIP - HERE'S WHAT HAPPENED

I decided to put ChatGPT to the ultimate test: planning my October trip to Lisbon from scratch. The results were surprisingly good for inspiration and itinerary ideas, but completely useless when it came to actually booking anything. Here's exactly what worked, what didn't, and why I ended up using a purpose-built travel AI instead.

The experiment: Let ChatGPT plan everything

I approached this scientifically, giving ChatGPT the same brief I'd give any travel planner: 4 days in Lisbon, mid-October, budget around $2,000 including flights from Los Angeles, prefer boutique hotels, love food and architecture.

ChatGPT delivered an impressively detailed itinerary within seconds. Day-by-day recommendations for exploring the cobblestone streets of Alfama, specific restaurant suggestions like Pharmacia in Príncipe Real for modern Portuguese cuisine, even timing advice for catching the golden hour at Miradouro da Senhora do Monte at 6:30 PM.

But then came the moment of truth: "Can you book these flights for me?"

Where ChatGPT shines: The brainstorming phase

Credit where it's due—ChatGPT excels at the creative heavy lifting. It suggested the Santiago de Alfama boutique hotel in the historic district and mapped out a logical walking route from Rossio Square through Chiado to Bairro Alto that actually made geographical sense.

The restaurant recommendations were particularly solid. Instead of the usual tourist traps around Terreiro do Paço, it pointed me toward places like Tabacaria Real for traditional petiscos and Mini Bar Teatro for fine dining—spots that locals actually frequent.

"ChatGPT is essentially a very well-read travel friend who's absorbed every guidebook ever written, but can't actually call the restaurant to make your reservation."

It even factored in practical considerations like October's weather patterns and suggested packing layers for the 16-24°C temperature range, plus a light rain jacket for afternoon showers.

The reality check: When AI meets actual booking

Here's where everything fell apart. ChatGPT confidently quoted me TAP Air Portugal roundtrip flights for $650 when the actual price on their website was $1,200. When I asked it to book the flights, it politely explained it couldn't access real-time inventory or make actual purchases.

The hotel situation was even more frustrating. It recommended the Memmo Alfama at €185 per night with such specificity that I assumed it was checking current availability. Turns out the hotel was fully booked for my October 15-19 dates—information that would have saved me 20 minutes of research.

Then there's the loyalty program blindness. I'm Marriott Titanium Elite, but ChatGPT couldn't factor in my status benefits or even identify which Lisbon hotels were Marriott properties where I'd get room upgrades and complimentary breakfast at the Executive Lounge.

The missing pieces: What ChatGPT can't do

Real-time pricing: Every flight and hotel price ChatGPT quoted was either outdated or completely fictional. Flight prices ranged from $650-$890 in its suggestions, while actual availability showed $1,180-$1,340. In today's dynamic pricing environment, this makes it essentially useless for budgeting.

Actual availability: Those perfect restaurant recommendations? Ramiro for seafood was closed for renovations until November. Taberna Real do Fado was booked solid for my dates. ChatGPT had no way of knowing current closures or reservation availability.

Personal preferences: Despite our 20-minute conversation, ChatGPT couldn't remember that I'd mentioned being vegetarian earlier in our chat, leading to several suggestions for Carmo restaurant's famous grilled octopus and other seafood-heavy spots.

"It's like having a travel agent with encyclopedic knowledge but no phone, no computer, and no ability to actually execute anything beyond generating ideas."

The booking process: This is the obvious limitation, but it bears emphasizing. ChatGPT can't hold flights while you decide between 8 AM or 2 PM departures, can't input your Known Traveler Number for TSA PreCheck, can't even tell you if window seats are available on your preferred flight.

Enter purpose-built travel AI

After hitting these walls with ChatGPT, I decided to try Otherwhere—a travel AI that's actually connected to booking systems and designed specifically for travel planning, not general conversation.

The difference was immediately apparent. Instead of generic €150-200 price ranges, I got real quotes with actual availability for October 15-19: Santiago de Alfama at €195/night (3 rooms available), Tivoli Oriente at €180/night (waterfront location), and Memmo Príncipe Real at €220/night (rooftop bar included).

More importantly, when I picked the Santiago de Alfama, Otherwhere actually completed the booking. Within 10 minutes, I had confirmation number SAL-2847392, a booking reference sent to my email, and the hotel's direct WhatsApp contact for any special requests.

The flight booking was even smoother. It found the same TAP Air Portugal route ChatGPT had mentioned but with accurate pricing at $1,180, and could hold the booking for 30 minutes while I decided between the 10:30 AM departure (arriving 6:15 PM next day) or the 1:45 PM departure (arriving 9:30 PM).

The verdict: Right tool for the right job

ChatGPT proved surprisingly useful for the creative phases of trip planning. Its restaurant suggestions led me to some genuine local favorites, and the neighborhood-by-neighborhood breakdown helped me understand how Alfama connects to Mouraria and why staying near Cais do Sodré makes sense for transport.

But for the actual mechanics of travel—booking flights, checking real availability, managing loyalty programs, handling confirmation numbers—it's completely inadequate. It's like bringing a paintbrush to a construction site.

"The future of travel planning isn't about replacing human expertise with AI, but about giving AI the right tools to actually execute on its recommendations."

Purpose-built travel AI like Otherwhere bridges that gap. It combines the creative brainstorming capabilities we expect from AI with the practical booking power we need to actually take the trip.

My Lisbon adventure was incredible, by the way. The Santiago de Alfama's terrace overlooking the Tagus was exactly as charming as advertised, and that golden hour at Miradouro da Senhora do Monte was worth every euro of the €3 tram ride up. But I booked it all through AI that could actually access real inventory, not just dream about it.

If you're tired of getting travel recommendations from AI that can't actually book anything, text us at (323) 922-4067. We'll handle everything from finding flights to getting you confirmed reservations—not just good ideas about where you might want to go.