With overpriced snacks, pricey drinks, and exclusive lounges, the airport can sometimes feel like one big scam. The fact that most airports offer free high-speed Wi-Fi may seem like a small win, but that "free" connectivity has a cost you may not see coming.
Public Wi-Fi networks—like those found at airports, hotels, cafes, and anywhere else travelers cluster—are some of the easiest environments for hackers to operate in. Bad actors count on you feeling safe enough in these locations to enter your bank information, social media passwords, and all kinds of other data on internet networks that you may not realize aren't secure.
Meanwhile, the international cellular data you've been avoiding to dodge roaming fees is highly encrypted, making it a much safer option.
Let's talk about securing your data when traveling and when you should avoid public Wi-Fi networks. We can also help you make sure that getting a secure internet connection while traveling doesn't cut into your vacation budget.
What makes airport Wi-Fi risky?
Public Wi-Fi networks are open by design, meaning they're shared with everyone in that terminal, lobby, or lounge. Unfortunately, many public networks have minimal security settings, and you have no way to know who else is on the network or what they're doing with it.
That openness creates opportunities for bad actors to intercept your data, redirect your traffic, or access your private information. They may even spoof a public Wi-Fi connection to create an "evil twin" with a similar name. If you accidentally join the fake network, they can monitor all of your traffic, install malware, and steal login credentials.
That risk is highest when you're doing anything sensitive, such as:
- Online banking or checking financial accounts
- Logging into work email or internal company tools
- Accessing accounts that store payment information
- Entering passwords for social media and email accounts
Why is cellular data more secure?
When you use roaming data on a carrier's network, your connection goes through an encrypted channel between your device and the cell tower. You're not sharing bandwidth with strangers in a terminal or having to worry about joining a fake Wi-Fi network.
That doesn't mean cellular is perfect. Sophisticated attacks on cell networks can happen, especially in countries with less developed infrastructure. Plus, as a traveler, your online traffic may be monitored by the local authorities. However, those threats aren't targeting most average travelers, so roaming data is still much safer than public Wi-Fi when logging into sensitive accounts.
Using your phone abroad doesn't have to be expensive
International roaming has a reputation for being unbelievably expensive. Stories of travelers returning home to phone bills with extra fees of $1,000 or more because they didn't use the correct plan while abroad are not urban legends.
The good news is that the travel plan landscape has changed significantly. It's never been cheaper to use your phone internationally, and even many MVNOs have affordable plans or add-ons.
Several major carriers and MVNOs offer international phone plans that allow you to use your plan abroad:
- T-Mobile's Experience plans include high-speed data allotments up to 15GB in 215+ countries for free.
- AT&T's International Day Pass is $12/day and only activates on the days you use your phone abroad.
- Verizon's TravelPass is also $12/day and activates when you use your device internationally.
- Google Fi's Unlimited Premium plan offers unlimited international data in over 200 countries for free.
|
#1
|
Google Fi Wireless
Unlimited Premium for 1
$32.50/mo
|
|
#2
|
Verizon
Unlimited Plus
$70.00/mo
+ Taxes & Fees. Price includes AutoPay & Paperless discount.
+ $40 Upfront
|
|
#3
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T-Mobile
Experience More
$85.00/mo
with Auto-Pay + Taxes and fees
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If your current plan doesn't offer international data, there are still other affordable options:
- International add-ons: Most carriers let you bolt on an international data package before you leave. Just make sure the add-on covers your destination.
- Local SIM cards: Picking up a prepaid SIM at your destination is still one of the cheapest options for longer trips, though it means temporarily losing your regular number. You can usually find them in the airport as soon as you get off your flight.
- Travel eSIMs: Apps like Airalo or Maya Mobile let you purchase a data-only eSIM for your destination before you travel. No new physical SIM card is required, and rates are often competitive with local plans.
If you pick a cheaper plan with a limited data allotment, it's worth spending a few minutes before your flight learning how to turn off data roaming on your specific device. Otherwise, you may need to buy more data before your trip is over.
When public Wi-Fi is probably fine
There are times when it's better to use Wi-Fi, even if it's not as secure as mobile data.
Using airport Wi-Fi to stream a show while you wait for your flight, look up directions, or check the weather isn't going to expose your financial life or sensitive data. The risk depends on what you're doing and what accounts you're logging into.
A practical rule is that anything important that requires a password to access should go through cellular. Everything else is a judgment call.
It helps to understand the difference between Wi-Fi and cellular data more broadly. Knowing what each connection type is actually doing makes it easier to make smarter decisions.
If you do need to use public Wi-Fi for something sensitive, a VPN can help by encrypting your traffic before it leaves your device. It's not a perfect solution—and you should always avoid free VPNs that may be selling your data—but a reputable paid option adds a meaningful layer of security when cellular isn't available.
You should note that internet laws vary around the world. Before traveling with a VPN, make sure you're allowed to use it at your destination.
Roaming data vs. airport Wi-Fi: FAQ
Is airport Wi-Fi safe?
Airport Wi-Fi security is usually weak, and the networks are not safe. They're public, often minimally secured, and shared with hundreds of strangers. Those kinds of network flaws can create a real exposure to data threats and hackers.
Should I use roaming data for banking while traveling?
Yes, you should use roaming data for banking or any other financial actions while traveling. For any task that involves sensitive login credentials, cellular roaming is safer than a public Wi-Fi source.
Does a VPN make public Wi-Fi safe?
A VPN reduces the risk of using public Wi-Fi by encrypting your traffic and routing it through a secure server. That said, free VPNs are known for having weak network security and selling user data. You should always use a paid, highly rated VPN service like NordVPN, Surfshark, or Proton VPN.
What should you avoid doing while using public Wi-Fi?
You should avoid doing anything involving sensitive personal data while using public Wi-Fi. This includes activities such as online banking, accessing work emails, using healthcare portals, and anything that requires your Social Security number. You should also avoid logging into your social media accounts and personal email, though it's usually safe to use them if already logged in on your device.
What's the cheapest way to get roaming data?
For customers on postpaid unlimited plans from major carriers like AT&T, Verizon, and T-Mobile, it's usually cheapest to use the international roaming features that come with your plan in the form of roaming data or travel passes. Customers on plans that don't include roaming data should compare the cost of purchasing a carrier add-on, selecting a travel eSIM, or buying a local SIM card after getting to their destination.
Max McCaskill
Sr. Staff Writer
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