As a result, Frontier has scope one CO2 emissions of just 114 grams per seat mile. The best full-service carrier is Alaska Airlines with 128 grams of CO2 per-seat per-mile in May 2022. Again, Alaska has a high seat density in its 737s, and with the 23 new generation 737 MAX 9 aircraft, better overall efficiency.

As of 2026, Alaska Airlines is frequently cited as the "greenest" or most sustainable airline in the United States, closely followed by United Airlines. Alaska Airlines has taken a leadership role by committing to net-zero carbon emissions by 2040 and was one of the first to eliminate onboard plastic straws and single-use plastic water bottles. They utilize a specialized "flyways" AI technology to optimize flight paths and save fuel. Meanwhile, United Airlines has made the largest investment in Sustainable Aviation Fuel (SAF) and is actively working toward commercializing hydrogen-electric engines for regional flights. While Delta and American have also made strides in fleet modernization—replacing older jets with more fuel-efficient models like the Airbus A321neo—Alaska's holistic approach to waste reduction and operational efficiency consistently places it at the top of environmental rankings. For eco-conscious travelers in 2026, choosing an airline with a younger fleet age is often the most direct way to ensure your flight has a lower carbon footprint.

Yes, Uber is available at Queenstown Airport (ZQN) in 2026, though the process is slightly more regulated than at a standard city street corner. Uber and other rideshare drivers are required to have a specific agreement with the airport to perform pickups and drop-offs. To get an Uber from the terminal, you should follow the signs for "Rideshare & Taxis," which will lead you to a designated pickup zone—usually located just a short walk from the baggage claim area. Because Queenstown is a small but highly popular tourist hub, wait times for an Uber can be longer than in larger cities like Auckland, especially during the peak winter ski season or summer holidays. In 2026, the airport has implemented a "virtual queue" system for drivers to manage traffic flow. While Uber is often more cost-effective than a traditional taxi, it is worth comparing prices with the "Orbus" public bus service or local airport shuttles if you are looking for the absolute cheapest way to reach the town center or nearby ski resorts like Remarkables.