Virtual Private Networks, or VPNs, are popular services for (supposedly) increasing your security and privacy on the internet. They are often marketed as all-encompassing security tools, and something that you absolutely need to keep hackers at bay. However, many of the selling points for VPNs are exaggerated or just outright
Another good use for VPN is to counter dynamic pricing. My wife visited a website some time ago to request the price for a ticket. When she visited the website a second time the price had increased considerably. However when visiting the price with VPN it was the original price again. It saved her a lot of money.
You can also get around this by using a non-airline owned travel metasearch engine like Kayak.