A short phone video has put Frontier Airlines in an awkward spot. Posted on X, the 43-second clip shows a Frontier flight attendant topping up large Crystal Geyser bottles using water from the aircraft's own tanks. The flight in question was F92342 from Los Angeles (LAX) to Denver (DEN), reportedly on September 25, and the footage has been circulating widely — for obvious reasons.
Why does this matter? Aircraft tank water has a poor reputation. Studies over the years have found it frequently falls short on cleanliness, and plenty of frequent flyers refuse plane coffee or tea for exactly that reason. Hot water for those drinks at least gets heated enough to kill much of the bacteria; a cold bottle poured straight from the tank is a different proposition entirely.
The confusing part is the economics. Frontier runs a buy-on-board model: nothing is free, and a bottle of purified drinking water costs $4.29. If tank water were being poured into branded bottles and sold, that would be both a hygiene issue and a misleading-presentation issue — like refilling a premium bottle with tap water.
But there's another, more mundane possibility. Frontier doesn't officially offer complimentary water as standard. Yet numerous traveller reports suggest that if you simply ask, crew will hand over a cup of ice or a cup of cold or hot water — the only documented exception being long delays, where US Department of Transportation rules require it. So the working theory is that these bottles were being pre-filled with tank water to serve those request-a-cup requests, rather than sold. Whether that's airline policy or a crew workaround isn't clear, since Frontier hasn't published anything about where that courtesy water comes from.
What should you take from this? If you're flying Frontier (or any ultra-low-cost carrier) and want drinking water, the safest bet is to buy the sealed bottled water, bring an empty bottle through security and fill it at a airport fountain, or board with your own. If you accept a free cup of water onboard, know that it may well come from the aircraft tank — the same supply used for coffee and tea. Some travellers are fine with that; others would rather skip it. Either way, it's a reminder that 'water' on a plane isn't always the same thing, and that low-cost carriers' unpublished courtesies can look strange when caught on camera.
