Last summer a Spanish traveler named Mery Caldass asked ChatGPT whether she needed a visa to fly to Puerto Rico. It told her no. It didn’t mention that she still needed an ESTA to enter U.S. territory. She got to the airport and was denied boarding. A few months later a man flying to Macedonia got the same confident, wrong answer and the same result: turned away at the gate.
Here’s the thing those stories are usually told to prove — “see, you can’t trust AI to plan travel” — and here’s what they actually prove: people are using ChatGPT to plan real trips, in huge numbers, and most of them don’t know the one habit that separates a great AI-planned vacation from a ruined one.
That number isn’t small, by the way. Phocuswright tracked U.S. travelers using AI to plan trips at 24% in 2024, 43% in late 2025, and 56% by March 2026 — they called it the fastest behavioral shift in travel in a decade. Among people under 35, it’s over 70%. AI trip planning isn’t a novelty anymore. It’s just how a lot of people plan now.
So let’s do it properly. Here are the six prompts that plan an entire trip, in order — and the single step that catches the closed museum before it eats your afternoon.
What ChatGPT is genuinely good at (and where it lies to you)
The honest version, because it changes how you use it.
ChatGPT is excellent at the thinking part of trip planning: brainstorming where to go, balancing a group’s competing interests, clustering activities by neighborhood so you’re not crossing the city four times a day, and turning a vague “five days in Lisbon, we like food and walking” into a structured plan in fifteen seconds. As one parent put it on X: “Travelling abroad with ChatGPT is just so much easier, especially with a baby. Ask for well-reviewed restaurants within a radius of our accommodation and boom — an itinerary, popular times to avoid, places that take kids.” That’s the tool at its best.
Where it lies to you is the facts. Independent audits in 2026 found that roughly 90% of AI-generated itineraries contain at least one material error — a restaurant that closed, a hotel that doesn’t exist, a “ten-minute walk” that’s an hour, a museum you’d arrive at twelve minutes before it locks the doors. Google’s own Bard once invented a Tokyo hotel out of thin air. OpenAI’s most capable model scores around 10% on hard, real-world itinerary benchmarks. Not because it’s stupid — because it’s a language model confidently filling in plausible details, and plausible isn’t the same as true.
The mental model that fixes everything: ChatGPT is your brilliant, fast, slightly unreliable travel-obsessed friend. You’d take their ideas in a heartbeat. You’d also double-check the opening hours before you drove across town on their say-so.
The 6 prompts that plan your trip
Run these in order. Each one builds on the last, so keep them in the same chat.
1. The brief. Don’t ask “plan me a trip to Italy.” Give it a real profile — this is the single biggest quality lever:
Help me plan a trip. Here are the details:
- Destination + dates: [city, exact dates]
- Travelers: [number, ages, mobility, who's coming]
- Budget: [total or per-day, currency]
- Style: [relaxed / packed], must-sees: [list], avoid: [list]
- Home base: [hotel/area if booked]
Ask me up to 5 clarifying questions before you plan anything.
That last line is the trick. Forcing it to ask questions first gets you a far better first draft than a cold guess.
2. The day-by-day. Now build the skeleton — and steal the prompt-engineering crowd’s best constraint:
Build a day-by-day itinerary. Cluster each day by neighborhood so we're
not crossing the city back and forth. Leave realistic travel and rest
time between activities. Flag anything that depends on opening hours or
advance booking. Don't schedule the last activity at the same time as
our flight home.
“Cluster by neighborhood” and “don’t ping-pong across the city” are the two phrases that turn a chaotic list into a route you can actually walk.
3. The refinements. This is where AI beats a static guidebook — adjust in plain English:
Make Day 2 more kid-friendly and add a rainy-day backup.
Make Day 4 lighter — we'll be tired. Swap the long lunch for
something quick so we keep the afternoon.
4. The checklists. Get the boring, valuable stuff:
Based on this itinerary and the weather for these dates, give me:
(1) a packing list, (2) which activities need reservations and how
far ahead, (3) a short local-food shortlist near each day's cluster.
5. The verify pass. Before you trust a single line of it, make the AI mark its own risky claims:
List every place, opening hour, price, and travel-time estimate in
this plan as a checklist for me to confirm myself. Flag anything you're
not certain is current, and note where I should double-check visa or
entry requirements.
6. The share version. Turn it into something your travel companions will actually read:
Rewrite the final plan as a clean, shareable day-by-day with times,
addresses, and a one-line "why" for each stop. Keep it skimmable.
Six prompts, about ten minutes, and you have a real itinerary. But you’re not done — because of step seven, the one that isn’t a prompt at all.
The one step that saves your vacation
Before you book anything or board anything, open a second tab and confirm the facts. Not all of them — just the ones that cost you if they’re wrong:
- Anything that closes: opening hours and days for every must-see. The single most common AI travel fail is arriving at a place that’s shut.
- Anything that requires a document: visa and entry rules, on the official government site — never on ChatGPT’s word. This is the Mery Caldass rule. An AI that’s wrong about an ESTA costs you the whole trip.
- Anything you’re paying for: confirm the hotel and restaurant exist and are bookable on a real booking site. “Does it exist” sounds paranoid until you remember Bard’s phantom Tokyo hotel.
Travelers who get real value from AI aren’t the ones who trust it more — they’re the ones who verify. Survey data backs this up: a majority of AI users already cross-check recommendations on review sites and confirm details on booking platforms before committing. That five-minute check is the difference between a smooth trip and a story you tell later about the museum that was closed for renovation.
What this means for you
If you’re planning a big once-a-year trip: use all six prompts, then verify ruthlessly — the stakes are high and the verify pass is cheap insurance. The neighborhood-clustering alone will save you hours of backtracking.
If you’re a last-minute, “we leave Friday” traveler: prompts 1, 2, and 5 are enough. Give it the brief, get the day-by-day, run the verify pass, confirm the openers, go.
If you’re traveling with kids or family with different energy levels: the refinement step (prompt 3) is your superpower. “Make this work for a 6-year-old and a grandparent” is exactly the kind of juggling ChatGPT does well and a static guide can’t.
If you’re an international traveler: treat every entry-requirement answer as a suggestion to go check the official source. Visa and ESTA mistakes are the one category of AI error that can end the trip before it starts.
What this can’t fix
- It can’t see today. Hours change, places close, construction happens. ChatGPT’s training has a cutoff and even its live-search results lag reality. The verify pass exists because of this.
- It can’t book for you reliably. Some versions are adding booking features; for now, do the actual reserving yourself on sites you trust.
- It doesn’t know your gut. It optimizes for “reasonable.” If a day feels too packed, it is — overrule it. You know your own pace better than a model does.
- It’s confidently wrong about rules. Visas, customs, currency limits, driving permits — high-stakes, frequently-wrong, always-verify. No exceptions.
The bottom line
AI trip planning went from novelty to mainstream in about eighteen months, and most people are using it like a search engine when it’s really a first-draft machine. Use the six prompts to do the heavy lifting — the brief, the day-by-day, the refinements, the checklists, the verify pass, the share version — then spend five minutes confirming the few facts that matter. That’s the whole skill. Brilliant friend, double-checked facts.
Want to get genuinely fast at this — not just for travel, but for every “do this for me” task you throw at ChatGPT? Start with AI Fundamentals to build the verify-first habit, then Advanced Prompts to write briefs that get great first drafts every time. Curious whether ChatGPT or another model plans better trips? Our ChatGPT vs Claude course shows you how to pick the right tool for the job.
Sources
- Travelers are turning to AI to plan trips — but hallucinations and trust gaps remain — CNBC
- These AI Fails Are Proof You Can’t Fully Rely On ChatGPT To Plan Your Trip — HuffPost
- AI for Trip Planning? Tread with Caution — Rick Steves Europe
- How to Avoid AI Travel Planning Mistakes — Travo
- AI Hallucinations in Tourism: How Errors Impact Consumer Trust — Journal of Consumer Behaviour (Wiley)
