For your next flight, bring along an empty water bottle to stay hydrated without paying inflated airport prices for bottled water. Transportation Security Administration (TSA) allows passengers to bring empty, refillable bottles in carry-on bags. In airports and popular tourist destinations, food and drinks are outrageously overpriced. Bringing your own bottle and filling up at water fountains will save you money plus help reduce the amount of plastic ending up in landfills.
Heck, whatever mode of travel you choose, bring a water bottle, even if you are taking a daytrip across town.