A look at political campaign contributions made by major U.S. airline CEOs shows that top executives personally contributed to congresspeople likely to affect airfare regulation in 2016.

Data from the Federal Election Commission (FEC) paints a picture of top executives sending money to the politicians who actively shape air policy in America.

The bulk of the money sent from U.S. airline CEOs to American politicians was sent to those holding positions in the U.S. Senate Committee on Commerce, Science, and Transportation and the U.S. House Transportation Committee.

Rep. Bill Shuster, the Republican from Pennsylvania who is chairman of the House Transportation Committee, received $8,700 in contributions, the most any politician received from airline CEOs. Ranking member Peter DeFazio, a Democrat from Oregon, received $6,000.

Overall, airline CEOs directly sent more than $90,000 to politicians last year; Delta Air Lines CEO Richard Anderson alone sent $24,600 to a variety of politicians.

Individuals are limited to contributing $2,700 per election cycle to a political candidate’s committee, while contributions to national party committees are limited to $33,400 per cycle.

The top single contribution to a political campaign in 2015 was actually Allegiant Air CEO Maurice Gallagher, who sent $30,000 to Uninitiated PAC, a campaign group affiliated with the ill-fated presidential candidate Scott Walker, the Republican governor of Wisconsin. New United CEO Oscar Munoz also sent a small contribution to Jeb Bush’s presidential campaign.

Political Action Campaign (PAC) contributions, which can’t be directly traced to individual political campaigns, have been left off the list below. But PACs affiliated with the airlines have sent more than $700,000 so far to political campaigns in the 2016 election cycle.

Jeff Smisek, former United Airlines CEOOscar Munoz, current United Airlines CEORichard Anderson, Delta Air Lines CEOC. David Cush, Virgin America CEOGary Kelly, CEO Southwest AirlinesBradley Tilden, CEO Alaska AirlinesMaurice Gallagher, Allegiant AirTOTAL
Bill Shuster (R-Pa.)20002700200020008700
Patty Murray (D-Wash.)2000260040008600
John Thune (R-S.D.)2000200020006000
Kelly Ayotte (R-N.H.)2000200020006000
Peter DeFazio (D-Ore.)2000200020006000
Joe Heck (R-Nev.)54005400
Zoe Lofgren (D-Calif.)54005400
Cresent Hardy (R-Nev.)52005200
Harold Rodgers (R-Ky.)200020004000
Steve Scalise (R-La.)200020004000
Lisa Murkowski (R-Ala.)260010003600
Amy Klobuchar (D-Minn.)27002700
David Scott (D-Ga.)27002700
Jason Chaffetz (R-Utah)27002700
Jeb Bush27002700
Michael Roberson (R-Nev.)27002700
Steve Israel (D-N.Y.)27002700
Erik Paulson (R-Minn.)26002600
Debbie Dingell (D-Mich.)25002500
William Huizenga (R-Mich.)25002500
Peter Olson (R-Texas)15001500
Dean Heller (R-Nev.)10001000
Lynn Westmoreland (R-Ga.)10001000
TOTAL12000540024600540013500150001430090200
Photo Credit: Rep. Bill Shuster (R-Pa.), right, and Rep. Dave Camp (R-Mich.) look on as former House Speaker John Boehner signs The Highway and Transportation Funding Act in 2014. John Boehner / Flickr