(The Hill) Max Greenwood 10/18/19 11:04 AM Spending on private flights by Democratic presidential candidates soared over the past three months from roughly $680000 in the second quarter to more than $2.2 million in the third fundraising period of the year. Topping the spending list was former Vice President Joe Biden who dropped about $924000 on private air travel in the period between July 1 and Sept. 30 campaign finance reports show. Thats more than three times as much as the $256000 he spent in the second quarter. But Biden isnt the only one whose charter plane spending surged. South Bend Ind. Mayor Pete Buttigieg spent nearly $479000 on private flights over the past three months up from roughly $300000 in the second quarter. And Sen. Kamala Harris (D-Calif.) used about $253000 in campaign cash to charter flights significantly more than the $17000 she spent in the second quarter. The Democratic primary fields leading progressives Sens. Bernie Sanders (I-Vt.) and Elizabeth Warren (D-Mass.) also saw their private air travel spending swell in the three-month fundraising period. Sanderss spending rose from just $18000 in the second quarter to more than $360000 in the third. Meanwhile Warrens spending jumped from just under $34000 to more than $132000. An aide to Warrens campaign said that the campaign offsets its carbon emissions from travel noting that it paid $10150 to Native Energy a carbon offset provider last month. Buttigiegs campaign likewise spent $1900 on carbon offsets according to Federal Election Commission reports.