American teams up with BeGreen, which sells offsets in $14 chunks. The money from each purchase supports renewable energy resources, and AAdvantage members score up to 10 miles per dollar on BeGreen.org purchases.
Delta Air Lines
Delta pioneered domestic carbon offset programs in 2007, and its current work with The Nature Conservancy encourages flyers to fund environmental projects around the world. Today through May 22, Delta will match all carbon offset donations made through The Nature Conservancy, up to $25,000.
JetBlue’s program through Carbonfund.org supports three U.S. emissions reduction efforts: a wind farm in Wingate, Texas; a waste management project in Rodam, N.Y.; and a reforestation effort in the Tensas River Valley in Louisiana. Offsets start at $5 for flights shorter than 2,500 miles.
Like Continental, United prefers the Sustainable Travel International program, which lets passengers choose the projects they want to fund. Offsets for a round-trip flight from Chicago to New York cost between $4 and $8.
Virgin America also works with Carbonfund.org, but it skips tree-planting in favor of two projects that fund truck stop electrification and dairy farm biodigesters. Offsets start at $5 for flights shorter than 2,500 miles.