Book flights and hotels with an AI agent
A Monmo agent can plan and book a trip. It searches airline and hotel sites in its own browser, compares the options against your rules, such as aisle seat, no overnight flights and a total budget, and shows you the best one with two alternatives. It books only after you approve the payment, then adds the flights and hotel to Google Calendar.
Updated 2026-11-13 · Free to start. Paid plans from $15 a month.
How the agent does it
- 01
You tell it your rules once
Home airport, aisle or window, no departures before 7:00, hotels within a ten-minute walk, a nightly limit, loyalty numbers. The agent keeps these as your preferences and applies them to every trip until you change them.
- 02
It works out the trip from your calendar
Name the event or the dates. The agent reads Google Calendar to see when you must arrive, what you cannot miss before you leave and how long you need on the ground, then proposes the travel days.
- 03
It searches and compares
In its own browser it searches airline, hotel and booking sites, the way you would with twenty tabs open. It compares the full price with bags and taxes, flight times, walking distance to the venue and cancellation terms.
- 04
It shows you a short list
You get the best match and two alternatives, each with total cost, times, seat, hotel and what can be cancelled until when. It says plainly where an option breaks one of your rules and by how much.
- 05
It asks before it pays
An approval card states the total, for example $1,896, the airline and hotel, the payment card to be charged and the cancellation terms. Allow it and the agent completes the booking. Decline and nothing is bought; the options are kept.
- 06
It puts the trip in your calendar
After booking, it checks the confirmation emails in Gmail against what you approved: names, dates, totals. With your OK it adds each flight and the hotel to Google Calendar with confirmation numbers, local times and the address.
- 07
It keeps the itinerary and watches for changes
The itinerary and receipts are saved as a PDF in your Library. Before you travel, the agent can check Gmail each morning for schedule changes and tell you. Changing or cancelling a booking asks first.
What is ready once the trip is booked
- A comparison of the best option and two alternatives, with full prices
- Flights and hotel booked after one approval of the payment
- Calendar entries with confirmation numbers, local times and the hotel address
- An itinerary PDF with the receipts, saved in your Library
When it asks you
Searching and comparing need no approval. Before any payment the agent stops with a card that states the total, who is being paid, the payment card to be charged and the cancellation terms; calendar entries and later changes or cancellations ask as well.
How to ask
- I need to be in Tokyo for Outdoor Week, 17 to 21 February. Find flights from Melbourne and a hotel near the venue. Aisle seat, no overnight flights, under $2,400 all in. Ask me before you book.
- Remember for every trip: aisle seat, no departures before 7:00, hotels within a ten-minute walk of the meeting and never more than $250 a night.
- Every Friday at 16:00, look at the next three weeks in my calendar and tell me which trips still have no flight or hotel.
Watch it work
A sample replay with example data, sped up. Pause it, scrub through it, or take the mouse yourself.
On screen
Google
Pick a job. Watch it get done.
- Aurora Air AU128 · nonstop · Feb 17, 09:25$1,184
- Seat 14C, aisle, both waysIncluded
- Hotel Sora Ariake · 4 nights · 6 min walk$712
- Why
- Your Tokyo trip, Feb 17 to 21.
- Where
- Aurora Air and Hotel Sora · Visa ending 4242
- What to expect
- Charges $1,896 to your card. The hotel can be cancelled free until Feb 10.
Your team. Connected to everything.
MEL to TYO - Google FlightsHotels in Tokyo - GoogleAurora Air · Booking confirmed+You’re going to Tokyo
Confirmation AU-7K2M9 · 14C · aisle
Wed 17Flight AU128 · MEL to NRT09:25
17 to 21Hotel Sora Ariake4 nights
Sun 21Flight AU129 · NRT to MEL11:10
Sample replays with fictional data, sped up. Pause one, scrub through it, or take the mouse yourself.
Questions people ask
Can an AI agent book flights and hotels for me?
Yes. A Monmo agent searches and compares in its own browser, the way a person would, and books once you approve the payment. It then adds the trip to your calendar and saves the itinerary and receipts in your Library. You set the rules for seats, times and budget, and you can watch its screen while it searches.
Does the agent pay with my card without asking?
No. Payment is the moment it always stops. The approval card shows the total, who is being paid and which payment card will be charged, and nothing is bought until you allow it. If you would rather not share card details at all, take the mouse on the payment page and type them yourself; the agent carries on afterwards.
How does it know my travel preferences?
You tell it once, in plain words, and it remembers: seat, airlines you prefer or avoid, earliest departure, hotel distance, nightly limit and loyalty numbers. It applies them to every search and says so when no option fits all of them. Change a preference any time by telling it, for example window seats on flights over six hours.
What happens if my plans change after booking?
Tell the agent the new dates. It reads the fare and hotel rules, works out what a change or cancellation would cost and shows you the options. Making the change asks first, because it can cost money. If an airline or hotel will only change a booking by phone, the agent gives you the number and the details to quote.
Which travel websites does it use?
The ones you would use yourself: airline and hotel sites and the booking sites you prefer, opened in the agent's own browser. Tell it your favourites, or let it compare several. Some sites need your login or a human check; the agent pauses there, and you can take the mouse to get past it. Results vary with the sites involved.