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What really happens to your data when you book travel online – and top tips on how to protect yourself before your next adventure.
I’ve connected to Wi-Fi in airport lounges in Bangkok, hotel lobbies in Marrakech, and tiny guesthouses in rural Vietnam. I’ve booked flights on my phone from a café in Lisbon, confirmed hotel reservations over spotty connections in Vancouver, and handed over my card details more times than I can count. And honestly? For years, I didn’t think twice about any of it. I was too caught up in the excitement of the next adventure to stop and consider what was actually happening to my data.
But the more I travel, the more I’ve come to realise that data protection isn’t just a tech industry concern, it’s a real, everyday travel issue. Every time you book a flight, reserve a hotel room, or sign up for a tour online, you’re sharing a surprising amount of personal information. Where it goes after that, and how it’s used, is something every traveller should understand. Here’s what’s really happening behind the scenes.
What data you actually share when booking
Booking a trip today feels so simple. Fill in a few boxes, hit confirm, and you’re done. But the information you hand over in those few clicks adds up to far more than most people realise. Your name, email address, phone number, and sometimes passport or ID details are just the starting point. Add in your payment information, billing address, travel dates, seat preferences, room choices, and special requests, and what looked like a straightforward form suddenly becomes a detailed personal profile. And that’s after you’ve already accepted cookies on the site just to get rid of the pop-up.
There’s also data you don’t actively type in. Your IP address gets logged, and if you’re booking via a mobile app, your real-time location may be collected too. I remember booking a guesthouse in Sri Lanka while sitting in a café – I was connected to the café’s Wi-Fi, probably hadn’t updated my privacy settings in months, and had location services switched on without even thinking about it. My Facebook business page also got hacked while I was in Sri Lanka (on our honeymoon I might add!), so data protection really is an issue.
Where your data goes after you book
This is the part that surprises most people. Once you complete a booking, your data doesn’t just sit safely with the company you booked through – it moves. Platforms like Booking.com or Expedia process and store your details, but they also pass relevant information to the airlines, hotels, and tour providers who actually deliver your trip. That part makes sense. What’s less obvious is that third parties – payment processors, analytics companies, and marketing platforms – they often get access too.
I’ve had the experience of searching for a hotel in one city, deciding against it, and then seeing adverts for that exact property following me around the internet for days afterwards. That’s not a coincidence. It’s the result of your data being shared across companies, tracked through cookies, and used to build a picture of your interests and habits. Your information rarely stays in one place. It’s annoying, isn’t it?
How your data gets used (often without you realising)
The moment your booking is confirmed, your data starts working, just not necessarily for you. Targeted advertising is the most obvious example. Search for a flight to Tokyo once and you’ll likely see Tokyo deals popping up across your social media feeds and websites for weeks (at ever inflated prices). It can feel almost unsettling when you haven’t even told anyone you’re thinking about Japan.
Pricing is another area worth being aware of. Some platforms adjust the prices you see based on your location, the device you’re using, or your browsing history. I’ve heard from fellow travellers who’ve spotted price differences when switching between their laptop and phone, or when using a VPN compared to their regular connection. Whether it happens consistently is debated, but the fact that it can happen at all tells you something about how your data is being used. It drives me crazy – I just want to see a price and pay it, not to go through to the booking page only for it to jump up by £50.
Beyond adverts and pricing, there’s the longer trail of tracking. Your activity gets linked across platforms through cookies and trackers, and that booking confirmation you received often marks the beginning of a stream of offers, reminders, and suggested trips. None of this feels obvious in the moment. But it’s happening in the background, shaping what you see and what you’re nudged towards every time you go online.
Hidden risks travellers don’t think about
The risks around online booking aren’t always dramatic, but they’re real and worth knowing about. Data breaches do happen. You read it all the time of companies who are hacked. If that happens, the personal and payment details you’ve stored there can be exposed. I make a point of not saving my card details on travel sites for exactly this reason. It takes an extra 30 seconds to type them in each time, but it’s a small habit that limits the damage if something goes wrong.
Third-party data sharing is another concern that sits quietly in the background. Your information may be passed to partners you’ve never interacted with and whose privacy practices you have no way of checking. And it doesn’t stop when your trip ends – some companies hold onto your data for years, long after you’ve come home and unpacked. Meanwhile, your behaviour across multiple websites gets tracked and linked, connecting your searches, clicks, and bookings into a profile that follows you around online. Most of this happens without any fanfare. It just builds, quietly, over time.
Can you actually control your data?
The good news is that you do have rights here, and they’re more accessible than most people think. Laws like the General Data Protection Regulation (GDPR) give you real control over your personal data, and many travel platforms follow these rules even if you’re not based in Europe. You can ask any company what data they hold on you, request that they delete it, and limit how it’s used for advertising or tracking purposes.
The catch is that these options are rarely front and centre. They tend to be buried in account settings or privacy policy pages that most of us scroll past without reading. The tools are there; most people just never go looking for them. And if you don’t, your data keeps circulating long after your trip ends, being used in ways you haven’t consented to and probably aren’t aware of.
Practical ways to protect your data
None of this means you need to stop booking trips online. But a few simple habits can make a real difference in how much of your personal information ends up out there.
Sticking to well-known, reputable booking platforms is a solid first step. If a deal looks too good to be true or a site feels off, trust that instinct. Avoiding saving your payment details on travel sites is another easy win. It’s slightly less convenient but worth it for the reduced risk. Taking a couple of minutes to review the privacy settings on any platform or app you use regularly is also time well spent; most track you by default, and turning off what you don’t need is usually straightforward once you know where to look. I know it’s annoying and takes time, but I always make sure I turn off every cookie setting – I don’t want my data shared with third-parties full stop.
Using a separate email address for travel bookings is something I’ve started doing myself. It keeps my main inbox cleaner and means that if one account gets caught up in a data leak, the damage is contained. And when it comes to travel apps, think twice about the permissions you grant – your hotel booking app really doesn’t need access to your location around the clock. Give only what’s necessary, and review those permissions every now and then.
If your details are already circulating across platforms from years of bookings, you may want to take more active steps and remove your personal information from the internet to properly regain control.
Don’t wait for something to go wrong
Most people only start thinking about their data after something bad has happened. That was me when my Facebook was hacked in Sri Lanka. Since then, I’ve become so much more invested in the subject. But the smarter move is to get ahead of it. Once your information is spread across platforms, pulling it back takes real effort. Old accounts, saved payment details, permissions you set years ago and forgot about – it all adds up.
There are tools that can help you manage or remove your data across multiple services, which can make the process much faster and more manageable. You don’t need to tackle everything at once. Just start somewhere, and build from there.
Travel smart and stay private
Booking online is easy. What happens to your data afterwards is considerably more complicated. Your details get shared, tracked, and stored across platforms you may never have heard of, and most of it happens long after you’ve clicked confirm and moved on to planning what to pack.
That’s not a reason to travel any less. It’s a reason to travel a little more thoughtfully. Before your next trip, take a few minutes to review your settings, limit what you share, and clear out any data or accounts you no longer need. Small steps now really can save you a lot of exposure later, and the peace of mind is absolutely worth it.
