Best VPN for public Wi-Fi (2026)

Public Wi-Fi is the one place where a VPN earns its price. The coffee shop router can see every unencrypted connection you make. A VPN wraps all of it in one encrypted tunnel. We compared five well-known services on the things that matter for that job. We opened every vendor page on October 19, 2026. Prices change often, so check before you buy.

The short answer

ExpressVPN is the best fit for public Wi-Fi because it can turn itself on when you join an unsecured network and its kill switch is on by default. NordVPN is a close second. Proton VPN is the pick if you want a real free tier. Mullvad is the pick if privacy matters more than convenience.

What a VPN does and does not do on public Wi-Fi

A VPN encrypts the traffic between your device and the VPN server. The hotspot owner, and anyone else on the network, sees only scrambled data going to one address. That stops snooping on the local network. It also hides your home IP address from the sites you visit.

A VPN does not check whether the hotspot is real. See how to tell if a Wi-Fi hotspot is fake. It does not stop phishing pages or malware. It does not make a bad password good. And the VPN company can see your traffic instead of the hotspot. That is why the no-logs audit and the company’s home country matter.

How we compared them

We did not buy or test these VPNs. We compared what each company publishes about its own service. We looked at seven things. Monthly price and best-value price in US dollars. The most recent independent no-logs audit, with the auditor and year from the vendor’s own page. Where the company is based. How many devices one account covers. Whether a free tier exists. Kill switch and auto-connect on untrusted Wi-Fi. And the refund window.

Every fact below comes from a vendor page we opened. Where a page did not say, we write “not stated.”

Comparison table

Prices are for the cheapest VPN tier of each service. NordVPN, Surfshark and ExpressVPN also sell bundles with antivirus and identity tools at higher prices.

The feature that matters most: auto-connect

The kill switch is standard now. All five have one. Mullvad’s cannot even be turned off. ExpressVPN’s is on by default and always on for iOS.

Auto-connect is where they differ. The risk on public Wi-Fi is the first thirty seconds after you join, before you remember the VPN. The best fix is an app that connects by itself on networks it does not trust.

ExpressVPN documents this most clearly. On Windows, you can set a rule for “When I join an unsecured Wi-Fi network.” On Android, you turn on “When joining networks not listed as trusted,” and new networks start as untrusted. The Android page says Android 10 and later need location permission for this to work.

NordVPN takes a different route. Its support page lists auto-connect for “On Wi-Fi networks” or “On all networks.” You then add home and work Wi-Fi to a Trusted Network list so the app stays off there. The same support page says the Wi-Fi exception feature is not available on Android 10 or later.

Surfshark works the same way. Its auto-connect fires on Wi-Fi, mobile data and Ethernet. You exclude networks by adding them as trusted. We did not find a setting that limits it to unsecured networks only.

Proton VPN’s pages describe a kill switch and an always-on mode for mobile. The Windows app warns you when you join an insecure Wi-Fi network. We did not find a documented auto-connect rule tied to network trust.

Mullvad’s app can connect when it launches. It has no network-based trigger on the page we read. You connect, and lockdown mode blocks everything else. That is simple and strong, but it relies on you.

Vendor notes

NordVPN

Six no-logs reviews is the longest record here. PwC did the first two in 2018 and 2020. Deloitte did 2022 through 2025. The company is based in Panama. Nord Security and Surfshark merged under one holding company in 2022, though both say they run separately. Visit NordVPN.

Surfshark

Unlimited devices is the standout. One account covers the family’s phones and laptops. The 24-month price is the lowest of the big three, but the pricing page does not show a renewal figure. Deloitte reviewed its no-logs claim in 2023 and 2025. Visit Surfshark.

ExpressVPN

ExpressVPN publishes the longest audit list. KPMG reviewed its privacy claims in 2022, 2023 and June 2025. Cure53 has audited the apps, the Lightway protocol and the browser extension many times. The company operates from the British Virgin Islands and joined Kape Technologies in 2021. It renews at $99.95 a year, less than NordVPN’s $139.08. Visit ExpressVPN.

Proton VPN

Proton is the only one with a free plan that has no data cap. The free plan covers one device at medium speed in ten countries picked at random. Plus costs $9.99 monthly, the lowest monthly rate here after Mullvad. Securitum has audited the no-logs policy five years running. Visit Proton VPN.

Mullvad

Mullvad charges one flat price with no sales and takes cash by mail. It does not ask for an email address. Cure53 audited the servers in June 2024. Audits in 2026 covered the payment backend and the Android app. The trade-offs are five devices, a 14-day refund, and no network-aware auto-connect. Visit Mullvad.

How we chose

This ranking is a comparison of published facts, not a hands-on test. We did not buy, install or speed-test any of these VPNs. We ranked them on what each company’s own pages said on October 19, 2026: prices, refund terms, audit summaries and setup guides. Auto-connect counted most, because the risk on public Wi-Fi is the moment you join. Here is the deciding reason for each pick.

1. ExpressVPN. It is the only one of the five whose own pages show a rule to connect by itself on unsecured Wi-Fi, on Windows and macOS. Its kill switch is on from the start, and it has a long audit list. It renews at $99.95 a year once the intro price ends, $39.13 less than NordVPN.
2. NordVPN. Wi-Fi auto-connect with a trusted list, and six no-logs reviews, the most here. It renews at $139.08 a year, more than ExpressVPN. The Android 10 limit on Wi-Fi exceptions costs it first place.
3. Surfshark. Best for households, because one account covers unlimited devices. Its 24-month plan is $2.49 a month, the lowest long-plan price here. The missing renewal price and the lack of an unsecured-only rule put it third.
4. Proton VPN. Best free option. It is the only one of the five with a free plan, and that plan has no data cap. Plus is $9.99 a month. It drops to fourth because we could not find a documented auto-connect rule for untrusted networks.
5. Mullvad. Strongest privacy design and the fairest pricing: 5 euros every month, about $5.61, with no email needed. It ranks last for this use case only because it waits for you to connect.

What we did not verify

We did not test speeds or leak protection ourselves. We did not read the full audit reports, only each vendor’s summary page. NordVPN’s dedicated kill switch page and Proton’s 1-year price did not load, so those are not stated. Surfshark’s renewal price is not shown on its pricing page. Mullvad’s price is set in euros, and the dollar figure is the site’s conversion on the day we checked. Every price is an introductory rate unless the table says otherwise.

Verdict

Buy ExpressVPN or NordVPN if you use public Wi-Fi every week and want the app to handle it. Use Proton VPN Free if you use public Wi-Fi once in a while. Pick Mullvad if you care more about who holds your data than about convenience. Whatever you choose, turn on auto-connect, turn on the kill switch, and read is online banking safe on public Wi-Fi and how to use airport Wi-Fi safely before your next trip.

Back to the Wi-Fi safety hub. If you are on a tight budget, a cheap phone plan with hotspot data can replace public Wi-Fi entirely, and a free phone program may cover the device.

Correction, October 19, 2026: an earlier version said ExpressVPN had the highest renewal price and NordVPN a lower one. The prices in the table show the reverse: NordVPN renews at $139.08 a year and ExpressVPN at $99.95.

Correction, October 21, 2026: an earlier version called Proton VPN Plus the cheapest monthly paid plan. Mullvad’s 5 euros a month, about $5.61, is lower.