Public Wi-Fi Safety: Do You Really Need a VPN at the Airport?
When a VPN helps on public Wi-Fi, when HTTPS is enough, and what else to do to stay safe on airport and café networks.
What is the real risk on public Wi-Fi?
The classic warning is that someone on the same network can intercept your traffic. In theory, this is true — unencrypted data sent over an open Wi-Fi network can be read by anyone with the right tools. In practice, the internet of 2026 is much more secure than it was a decade ago.
Most websites and apps use HTTPS by default, which encrypts the connection between your device and the server regardless of the network. A snooper on the same network cannot read your emails or steal your credit card number from an online purchase.
Where the real vulnerabilities remain
HTTPS does not cover everything. DNS queries — the requests your device makes to look up website addresses — are often unencrypted and visible to the network. That means someone can see which sites you visit, even if they cannot see what you do on them.
More importantly, not all apps use HTTPS. Older apps, some games, and certain messaging platforms still send data in the clear. A VPN encrypts all of this, not just browser traffic.
Do you actually need a VPN on public Wi-Fi?
For most casual browsing on legitimate public Wi-Fi, the risk is low. HTTPS handles the important parts. If you are checking email, scrolling social media, or reading news, you are probably fine without a VPN.
You should use a VPN on public Wi-Fi if: you are accessing sensitive work systems, you are in a country with aggressive internet surveillance, or you want to prevent the network from seeing which websites you visit.
Get a clearer picture — use the how to choose a VPN to compare your options.