How to Use AI to Plan a Trip Without It Sounding Like a Travel Brochure Wrote It

Last month I asked ChatGPT to help me plan five days in Lisbon. What I got back was a wall of text about "vibrant neighborhoods" and "must-see attractions" that could've been copy-pasted from any generic travel site. The itinerary had me waking up at 7 AM to "maximize my Portuguese experience." I don't wake up at 7 AM on vacation. Ever. I closed the tab and almost went back to doing it the old way — opening 47 browser tabs and losing three hours to TripAdvisor rabbit holes.

But here's the thing: AI can actually plan trips that feel like a friend who knows the city put them together. You just have to stop asking it questions like a search engine.

The Problem Is How You're Asking

Most people type something like "Create a 5-day itinerary for Lisbon" and wonder why the result sounds like it was written by a tourism board intern. That prompt gives the AI nothing to work with except its training data on what "most people" want. And most people, according to the internet, apparently want to see Belém Tower at sunrise and eat pastéis de nata at the same three shops.

The fix isn't complicated, but it requires you to actually think about how you travel before you ask. I started getting dramatically better results when I stopped asking for itineraries and started describing my actual travel personality.

Here's what I mean. Instead of "Plan my Lisbon trip," I now open with something like this:

"I'm traveling to Lisbon for 5 days in October. I hate waking up early on vacation and usually don't leave my hotel until 10 or 11. I'd rather find one great restaurant per day than hop between five okay ones. I get bored in museums after 45 minutes. I like walking neighborhoods more than checking off landmarks. I drink too much coffee. Budget isn't tight but I'm not doing anything that feels touristy just because it's famous."

That single paragraph changes everything. Now the AI has constraints. It has personality to work with. The suggestions it generates actually sound like they're for me — not for some theoretical "traveler."

The Technique That Actually Changed My Results

Here's the kick — the thing I figured out after probably 30 trips planned through various AI tools. Ask the AI to argue with itself about your itinerary.

After you get your initial plan, paste it back and say: "Now critique this itinerary from the perspective of someone who's actually lived in Lisbon. What would a local think is overrated, and what am I missing that tourists don't usually find?"

This prompt forces the model to access a different part of its training data. Instead of pulling from travel blogs and "Top 10" listicles, it starts drawing from forum posts, Reddit threads, expat discussions — the messier, more honest stuff. Suddenly you get recommendations like "Skip the famous Time Out Market for lunch crowds and walk 10 minutes to Mercado da Ribeira's less photographed sections" or "Feira da Ladra flea market is only worth it on Saturdays before noon."

I've tested this with trips to Barcelona, Tokyo, and Montreal. Every single time, the self-critique prompt surfaces at least two or three genuinely useful insights that weren't in the original plan. It's like getting a second opinion from a different AI personality.

Making the Language Sound Human

Even with better prompts, AI-generated travel plans can still read like they were written by someone who's never actually been tired at an airport. The phrasing gives it away — "immerse yourself in the local culture" or "savor authentic cuisine."

My fix: I explicitly tell the AI how to write. I add a line like "Write this in a casual, slightly sarcastic tone — like you're texting a friend who asked for recommendations, not writing a guidebook." You can also say "No marketing language" or "Write like you're explaining this at a bar."

Another trick that works surprisingly well: ask it to include one honest downside for each recommendation. "Tell me what's annoying about each place too." This forces more realistic descriptions. Instead of "The enchanting Alfama district offers cobblestone streets and fado music," you get "Alfama's great for wandering but the hills will destroy your knees if you're not ready for it, and some of the fado bars are genuine tourist traps."

Real travel advice includes complaints. That's how you know it's real.

When AI Trip Planning Actually Falls Apart

I'd be lying if I said this works perfectly every time. AI still struggles with anything time-sensitive — it doesn't know that your favorite restaurant closed last month or that there's construction blocking the scenic walking route. Always cross-reference opening hours and recent reviews for anything important. I learned this the hard way standing outside a "highly recommended" bookshop in Barcelona that had been closed for six months.

It also can't handle genuine spontaneity or the weird magic of travel — stumbling into a neighborhood festival, meeting someone at a coffee shop who tells you about their favorite hidden beach. Those moments don't get planned. But AI can handle the scaffolding — the rough shape of your days, backup options for rainy weather, realistic walking routes that don't have you crisscrossing the city like a maniac.

My Lisbon trip ended up being one of the better ones I've planned in years. Not because AI did the work for me, but because it did the boring research part faster, leaving me more time to actually look forward to going.

Heads up: Some links in this post may be affiliate links. I only recommend tools I've personally tested. Opinions are entirely my own.