How to plan a trip with AI without surprises when you arrive

Want to plan a trip without spending hours switching between maps, places to stay, and lists of things to do? AI can help you sort through the options and put together an initial itinerary. The tricky part comes next: working out whether that plan actually fits your schedule, your budget, and how much walking you want to do.

To plan a trip with AI, start by setting your limits, ask for an itinerary organized by area, and check the details that affect your bookings. Here’s a method with prompts you can copy, plus a worked example using AI and official sources to show what changes when you check the results.

1. Start with what you need, not a list of places

“Plan me a trip to Rome” leaves almost every decision open. The answer might look thorough but still suggest early starts you don’t want, hotels outside your budget, or three museums when you’re only interested in one.

Before you ask, note your dates, arrival and departure times, group size, accommodation area if you know it, budget, and preferred pace. Add your priorities and anything you’d rather avoid. If you have accessibility needs, describe the practical requirements without sharing unnecessary medical information.

Help me plan a trip to [destination] from [date] to [date]. There are [number of people] of us. We arrive at [time] at [station/airport] and depart at [time]. We’re staying in [area]. Our total budget for [included expenses] is [amount]. We’re interested in [interests] and would prefer to avoid [preferences]. We’d like a [relaxed/moderate/busy] pace, with [approximate limit on walking or activities]. Before suggesting an itinerary, ask me up to five questions about any missing details.

If you haven’t chosen a destination yet, change the request: ask for three options that fit your budget and travel time, with an explanation of the trade-offs for each. That gives you something concrete to base your choice on.

2. Ask for a draft organized by area, with some free time

A list of ten places isn’t an itinerary. Ask it to group nearby sights, leave time for meals, and separate must-dos from optional activities. The first and last days need to account for transfers and luggage.

Using those details, create a draft itinerary for each morning, afternoon, and evening. Group places by area and limit each day to two main sights. Add estimated travel times, breaks, and a rainy-day alternative. Separate must-dos from optional activities. Don’t invent opening hours, prices, or availability: mark anything you can’t confirm as “needs checking” and explain the assumptions behind the plan.

Google already documents AI planning features that create itineraries and let you refine them with follow-up instructions. Its guide to planning trips with Canvas is one example. Available features depend on the tool, account, and market; the prompts in this article are suggestions you can adapt, not a guarantee that you’ll have access to a particular feature.

3. A worked AI example: three nights in Lisbon

To put the advice into practice, we generated a proposal with the AI assistant in this session, then checked it through web searches. Exercise carried out on September 29, 2026, for hypothetical travel dates: October 16–19. We haven’t taken the trip, bought tickets, or tested several apps. The proposal and review were completed in the same session; this isn’t an independent product evaluation.

The initial prompt we used:

Plan a Lisbon getaway for two adults from Friday, October 16, to Monday, October 19, 2026. Airport arrival on Friday at 6 p.m., return flight to Spain on Monday at noon, accommodation in Baixa. A relaxed pace, no more than two main sights a day, and a trip to Sintra if it fits. A budget of €300 for both people, excluding flights and accommodation. Include a visit to Pena Palace, walks, and a rainy-day alternative. Don’t book anything. Separate estimates from details that need checking.

The first proposal: Friday for the transfer and dinner; Saturday for Sintra and Pena; Sunday for Baixa and Alfama, with an indoor alternative if it rains; Monday just for getting to the airport. The schedule was reasonable, but the budget of €150 for meals, €50 for admission, €70 for transportation, and a €30 buffer was a provisional allocation without verified prices. It also left out the details of getting from the station to Pena.

The review didn’t uncover an impossible itinerary: it found gaps that made it hard to book with confidence. These are the checks that changed the plan:

What we learned from searching: a bus search returned an old listing with a price, but we couldn’t verify that amount on the current page. So we didn’t add it to the budget as a confirmed fare. The date and the page you can actually open matter just as much as the search result.

The follow-up prompt:

Revise the proposal using the official information we’ve just checked. Separate the train, the bus to Pena, and the route within the park. Keep just one main visit in Sintra. Break down the budget for two people: distinguish published prices, budget allowances, and the buffer. Add Lisboa Story Centre as a rainy-day alternative at €8 per adult. Don’t invent trains, bus journey times, ticket availability, or a hotel address. Clearly flag anything still needed before booking.

The final itinerary after that review:

We haven’t confirmed a specific train or ticket availability for October 17. The result is a plan with its basic facts checked, with outstanding tasks clearly flagged before booking. If the schedules don’t fit comfortably, the fix would be to drop Sintra, not squeeze it in between other visits.

Here’s how the budget changes for two people:

The budget excludes flights and accommodation, as requested in the prompt. If the hotel booking doesn’t include taxes or there are other mandatory charges, those need to be added. This isn’t a promise that the trip will cost €277.40: the bus, meals, and actual journeys could change the total. If they exceed the buffer, you’ll need to adjust the plan. Putting an exact number in a table doesn’t make it a fixed price.

4. Check anything that could cost you time or money

The Google help page on generative AI itself warns that these tools can make up information. A confident answer or a link at the end doesn’t guarantee that the details have been checked.

Open every link. Check that it exists, refers to the right place, and covers your dates. If the tool can’t access current information, use it to organize the details you provide and do the checks outside the conversation.

List the details in this itinerary that need checking. For each one, identify the appropriate official source and what I should verify. Distinguish information confirmed through a source you’ve consulted, estimates, and unverified details.

Don’t assume an activity is booked just because it appears in the plan. Before paying, check the seller, dates, final price, and conditions. For a full budget review, take a look at our guide to hidden travel costs.

5. Share useful context, not all your documents

Dates, times, and areas are usually enough to plan an itinerary. You can write “I arrive at 6 p.m.” without attaching your boarding pass. If you copy a booking, remove full names, booking references, QR codes, payment details, and anything else that isn’t needed for the question.

Check the tool’s permissions and settings too. The Gemini Privacy Hub explains how conversations and other data are handled. Don’t assume every app has the same terms or that connecting your email is necessary to plan a trip.

6. Turn the conversation into a plan you can use

Once you’ve checked the itinerary, ask for a short version to take with you. A long conversation is awkward to scroll through when you’re looking for a train platform or your accommodation’s entrance.

Summarize the final plan in a day-by-day table with: area, main activity, address, booked time if applicable, transportation, and an alternative. Add separate lists of confirmed bookings and outstanding checks. Don’t add new details. Create a short version I can save and use offline.

Save the result, original bookings, and important contacts somewhere easy to access. Download the maps you need with our guide to Google Maps offline. A saved copy won’t update itself: if a booking changes, update your summary too.

If you’ll be asking AI for alternatives during your trip, sort out your connection before you leave. At TurTrip you can explore eSIM options for your destination; check what your current plan covers first. If your itinerary crosses several borders, see our guide to staying connected across multiple countries.

Which AI tool do you need to plan a trip?

Start with the one you already use and check three things: whether it can access current information, whether it provides links you can open, and whether it lets you save the result. A text conversation is enough to organize your preferences, compare suggestions, and review an itinerary you provide.

You don’t need to pay for a subscription just to try these prompts. Some advanced or connected features may require a particular plan, region, or account. First, consider whether they meet a specific need for your trip.

The clearest sign that AI has helped is simple: you understand the itinerary, know what’s booked, and know what still needs checking. If all you’ve gained is a longer list, ask it to cut it down and prioritize.

Sources consulted: Google: travel planning with Canvas, Google help page on generative AI and Gemini Privacy Hub. Method and prompts developed for TurTrip. For the worked example: Parques de Sintra, getting into Pena Palace, CP, Lisbon Metro, Sintra434, Lisboa Story Centre and Lisbon Airport.