The 3-1-1 rule from the TSA, limiting the amount of liquid, lotions and potions you can bring through security checkpoints, has always been a pain point for travelers.

In 2026 isn’t there security technology that can distinguish between a diet soda and explosives? The answer is..yes. But the TSA just hasn’t installed it yet or trained their agents.

But if you’re flying out of London’s Heathrow Airport, they just completed a one billion pound tech upgrade with new state of the art scanning machines, and the airport has lifted the liquids restriction.

Now, passengers can travel with liquids up to two liters in their carry-on bags. One other positive: the move will not just save time and money, you won’t have to buy expensive drinks at the airport, but it will also save around 16 million plastic bags a year