EXHIBIT S-13: AIRLINE MARKET SHARE BY LANDED WEIGHT (By Fiscal Year, Expressed in 1,000 lb. Units)

2017 2016 2015 2014 2013 Airlines Landed Market Landed Market Landed Market Landed Market Landed Market Weight Share Weight Share Weight Share Weight Share Weight Share Domestic Scheduled Major/National American 6,519,145 33.0% 6,622,369 31.8% 6,645,942 32.0% 6,729,332 32.5% 6,494,844 31.5% Southwest 1,147,550 5.8% 1,122,080 5.4% 1,073,920 5.2% 1,010,276 4.9% 1,189,716 5.8% Delta 986,238 5.0% 1,054,651 5.1% 1,074,449 5.2% 1,024,831 5.0% 955,459 4.6% United 581,513 2.9% 593,949 2.9% 585,951 2.8% 555,244 2.7% 661,536 3.2% Frontier 540,837 2.7% 463,422 2.2% 164,022 0.8% 4,693 0.0% 28,290 0.1% Spirit 394,267 2.0% 265,760 1.3% 143,495 0.7% 132,519 0.6% 31,841 0.2% JetBlue 249,728 1.3% 219,834 1.1% 158,080 0.8% 158,398 0.8% 18,624 0.1% Alaska 61,952 0.3% 55,912 0.3% 55,475 0.3% 55,410 0.3% 52,460 0.3% Air Canada 647 0.0% 660 0.0% 440 0.0% 660 0.0% 1,100 0.0% AirTran - - - - 42,864 0.2% 204,488 1.0% 340,320 1.6% Virgin America - - - - 35,545 0.2% 134,812 0.7% 213,741 1.0% Continental ------USA 3000 ------Midwest Airlines ------Northwest ------Subtotal - Scheduled Major/National 10,481,877 53.0% 10,398,636 49.9% 9,980,183 48.0% 10,010,661 48.4% 9,987,931 48.4%

Scheduled Regional/Commuter American Eagle Air Wisconsin 1,170,582 5.9% 1,641,945 7.9% 1,730,258 8.3% 1,486,845 7.2% 1,559,460 7.6% Piedmont 1,073,784 5.4% 856,093 4.1% 844,519 4.1% 984,862 4.8% 1,108,958 5.4% Republic 1,054,737 5.3% 1,573,718 7.6% 1,758,726 8.5% 1,729,624 8.4% 1,575,475 7.6% PSA 411,243 2.1% 393,415 1.9% 292,049 1.4% 274,903 1.3% 321,950 1.6% Envoy - - 448 0.0% ------Mesa - - - - 60,863 0.3% 64,607 0.3% - - Chautauqua ------86,587 0.4% Subtotal - American Eagle 3,710,345 18.8% 4,465,619 21.4% 4,686,414 22.6% 4,540,840 21.9% 4,652,430 22.5% Other 299,419 1.5% 262,640 1.3% 382,585 1.8% 501,896 2.4% 626,130 3.0% Subtotal - Scheduled Regional/Commuter 4,009,764 20.3% 4,728,259 22.7% 5,068,999 24.4% 5,042,736 24.4% 5,278,560 25.6%

Charter 1,706 0.0% 679 0.0% 1,641 0.0% 4,257 0.0% 1,192 0.0%

Total - Domestic 14,493,348 73.4% 15,127,575 72.7% 15,050,823 72.5% 15,057,655 72.8% 15,267,683 74.0%

International Scheduled American 2,136,282 10.8% 2,575,401 12.4% 2,710,497 13.0% 2,809,292 13.6% 2,644,675 12.8% British 292,559 1.5% 293,400 1.4% 284,499 1.4% 275,550 1.3% 268,709 1.3% Air Wisconsin 187,389 0.9% 192,136 0.9% 220,289 1.1% 255,351 1.2% 240,546 1.2% Qatar 163,004 0.8% 174,408 0.8% 183,868 0.9% 44,280 0.2% - - Lufthansa 144,230 0.7% 155,154 0.7% 165,814 0.8% 137,300 0.7% 112,147 0.5% Air Canada - Sky Regional / Jazz Aviation 123,047 0.6% 106,378 0.5% 99,695 0.5% 99,656 0.5% 99,814 0.5% Delta 84,262 0.4% 81,552 0.4% 34,650 0.2% 22,694 0.1% 24,104 0.1% Frontier 60,003 0.3% 76,825 0.4% 35,976 0.2% 25,738 0.1% 25,738 0.1% Republic 41,748 0.2% 79,176 0.4% 74,146 0.4% 58,631 0.3% 103,697 0.5% Icelandair 3,780 0.0% 142 0.0% 142 0.0% - - - - JetBlue 172 0.0% 142 0.0% 142 0.0% - - - - Southwest - - - - 128 0.0% - - - - Air Jamaica / Caribbean ------Continental ------USA 3000 ------Air France ------Piedmont ------Subtotal - Scheduled 3,236,477 16.4% 3,734,713 17.9% 3,809,846 18.3% 3,728,492 18.0% 3,519,430 17.1%

Charter 6,400 0.0% 3,273 0.0% 2,532 0.0% 6,377 0.0% 1,483 0.0%

Total - International 3,242,877 16.4% 3,737,986 18.0% 3,812,379 18.4% 3,734,869 18.1% 3,520,913 17.1%

All-Cargo Airlines 2,022,419 10.2% 1,955,784 9.4% 1,909,573 9.2% 1,899,162 9.2% 1,849,771 9.0%

Grand Total 19,758,643 100.0% 20,821,345 100.0% 20,772,775 100.0% 20,691,686 100.0% 20,638,367 100.0%

Note: American and US Airways numbers combined for all previous years. Source: City of Philadelphia EXHIBIT S-13: AIRLINE MARKET SHARE BY LANDED WEIGHT (Continued, By Fiscal Year, Expressed in 1,000 lb. Units)

2012 2011 2010 2009 2008 Airlines Landed Market Landed Market Landed Market Landed Market Landed Market Weight Share Weight Share Weight Share Weight Share Weight Share Domestic Scheduled Major/National American 6,519,126 30.5% 6,592,315 30.0% 6,362,588 29.4% 6,219,301 27.4% 6,650,777 27.9% Southwest 1,883,282 8.8% 2,335,648 10.6% 2,277,154 10.5% 2,825,044 12.4% 2,746,246 11.5% Delta 972,645 4.6% 978,725 4.5% 974,740 4.5% 662,037 2.9% 703,140 3.0% United 536,659 2.5% 518,260 2.4% 606,595 2.8% 728,405 3.2% 790,431 3.3% Frontier 79,842 0.4% 101,704 0.5% 49,220 0.2% 57,622 0.3% 97,894 0.4% Spirit ------JetBlue ------Alaska 2,880 0.0% ------Air Canada 880 0.0% 1,173 0.0% ------AirTran 301,816 1.4% 331,168 1.5% 356,872 1.6% 420,984 1.9% 614,560 2.6% Virgin America 55,269 0.3% ------Continental 179,638 0.8% 242,627 1.1% 239,403 1.1% 259,085 1.1% 284,767 1.2% USA 3000 - - 23,036 0.1% 28,866 0.1% 49,485 0.2% 81,622 0.3% Midwest Airlines - - - - 57,713 0.3% 71,723 0.3% 106,316 0.4% Northwest ------421,248 1.9% 537,296 2.3% Subtotal - Scheduled Major/National 10,532,037 49.3% 11,124,656 50.7% 10,953,151 50.6% 11,714,934 51.5% 12,613,049 52.9%

Scheduled Regional/Commuter American Eagle Air Wisconsin 1,576,239 7.4% 1,573,231 7.2% 1,750,797 8.1% 1,664,552 7.3% 1,828,253 7.7% Piedmont 1,035,539 4.8% 1,038,016 4.7% 978,762 4.5% 998,160 4.4% 1,013,612 4.3% Republic 1,629,517 7.6% 1,732,415 7.9% 1,715,114 7.9% 1,764,933 7.8% 1,540,131 6.5% PSA 332,498 1.6% 243,104 1.1% 217,536 1.0% 253,746 1.1% 224,519 0.9% Envoy ------Mesa - - 74 0.0% 147 0.0% - - 74 0.0% Chautauqua 96,884 0.5% 70,759 0.3% 61,781 0.3% 70,924 0.3% 79,352 0.3% Subtotal - American Eagle 4,670,677 21.9% 4,657,599 21.2% 4,724,137 21.8% 4,752,315 20.9% 4,685,941 19.7% Other 620,913 2.9% 605,377 2.8% 538,679 2.5% 568,997 2.5% 471,357 2.0% Subtotal - Scheduled Regional/Commuter 5,291,590 24.8% 5,262,976 24.0% 5,262,816 24.3% 5,321,312 23.4% 5,157,298 21.6%

Charter 9,055 0.0% 2,878 0.0% 3,543 0.0% 3,365 0.0% 4,554 0.0%

Total - Domestic 15,832,682 74.1% 16,390,510 74.6% 16,219,510 74.9% 17,039,611 74.9% 17,774,901 74.6%

International Scheduled American 2,634,850 12.3% 2,584,725 11.8% 2,574,713 11.9% 2,478,569 10.9% 2,424,939 10.2% British 277,447 1.3% 270,121 1.2% 254,332 1.2% 270,512 1.2% 279,575 1.2% Air Wisconsin 228,326 1.1% 208,069 0.9% 177,801 0.8% 133,433 0.6% 183,676 0.8% Qatar ------Lufthansa 112,152 0.5% 135,775 0.6% 142,696 0.7% 136,488 0.6% 150,266 0.6% Air Canada - Sky Regional / Jazz Aviation 94,620 0.4% 95,210 0.4% 77,999 0.4% 86,187 0.4% 81,021 0.3% Delta 29,898 0.1% 62,752 0.3% 38,052 - - - - - Frontier 18,770 0.1% ------Republic 158,701 0.7% 115,635 0.5% ------Icelandair ------JetBlue ------Southwest ------Air Jamaica / Caribbean 47,424 0.2% 50,394 0.2% 44,165 0.2% 52,156 0.2% 53,416 0.2% Continental 1,028 0.0% ------USA 3000 - - 26,307 0.1% 28,440 0.1% 29,862 0.1% 39,247 0.2% Air France - - - - 35,770 0.2% 114,804 0.5% 123,103 0.5% Piedmont ------999 0.0% Subtotal - Scheduled 3,603,216 16.9% 3,548,988 16.2% 3,373,968 15.4% 3,302,011 14.5% 3,336,242 14.0%

Charter 10,696 0.1% 9,394 0.0% 1,685 0.0% 5,413 0.0% 7,272 0.0%

Total - International 3,613,912 16.9% 3,558,382 16.2% 3,375,653 15.4% 3,307,424 14.5% 3,343,514 14.0%

All-Cargo Airlines 1,911,577 9.0% 2,010,961 9.2% 2,059,609 9.5% 2,387,809 10.5% 2,705,249 11.4%

Grand Total 21,358,171 100.0% 21,959,853 100.0% 21,654,772 100.0% 22,734,844 100.0% 23,823,664 100.0%

Note: American and US Airways numbers combined for all previous years.