DALLAS, Jan. 11, 2016 /PRNewswire/ -- Southwest Airlines Co. (NYSE: LUV) (the "Company") today reported its December, fourth quarter, and total year preliminary traffic statistics. The Company flew 10.0 billion revenue passenger miles (RPMs) in December 2015, an increase of 8.6 percent from the 9.2 billion RPMs flown in December 2014. Available seat miles (ASMs) increased 8.3 percent to 12.1 billion in December 2015, compared with December 2014 ASMs of 11.2 billion. The December 2015 load factor was a record for the month of December at 83.0 percent, compared with 82.7 percent in December 2014.

For fourth quarter 2015, the Company flew 29.7 billion RPMs, an increase of 11.1 percent from the 26.8 billion RPMs flown in fourth quarter 2014. Fourth quarter 2015 ASMs increased 8.4 percent to 35.4 billion, compared with fourth quarter 2014 ASMs of 32.6 billion. The fourth quarter 2015 load factor was a fourth quarter record at 84.0 percent, compared with 82.0 percent in fourth quarter 2014. The Company continues to estimate its fourth quarter 2015 operating revenue per ASM (RASM) will be approximately flat to down 1.0 percent, compared with fourth quarter 2014.

For 2015, the Company flew 117.5 billion RPMs, an increase of 8.8 percent from the 108.0 billion RPMs flown in 2014. For 2015, ASMs increased 7.3 percent to 140.5 billion, compared with 131.0 billion in 2014. The 2015 load factor was an annual record at 83.6 percent, compared with 82.5 percent in 2014.

This release, as well as past news releases about Southwest Airlines Co., is available online at Southwest.com.



                          Southwest Airlines Co.

                Preliminary Comparative Traffic Statistics


                                 DECEMBER
                                 --------

                                    2015                          2014    Change
                                    ----                          ----    ------

     Revenue
     passengers
     carried                  10,105,907                     9,594,370            5.3%

     Enplaned
     passengers               12,371,034                    11,666,424            6.0%

     Revenue
     passenger
     miles
     (000s)                   10,020,969                     9,224,382            8.6%

     Available
     seat
     miles
     (000s)                   12,072,508                    11,151,720            8.3%

    Load
     factor                        83.0%                        82.7%  0.3 pts.

     Average
     length
     of
     haul                            992                           961            3.2%

    Trips
     flown                       108,208                       104,550            3.5%


                           FOURTH QUARTER
                           --------------

                                    2015                          2014    Change
                                    ----                          ----    ------

     Revenue
     passengers
     carried                  30,368,454                    27,894,107            8.9%

     Enplaned
     passengers               37,039,737                    34,065,219            8.7%

     Revenue
     passenger
     miles
     (000s)                   29,727,972                    26,767,655           11.1%

     Available
     seat
     miles
     (000s)                   35,378,679                    32,647,338            8.4%

    Load
     factor                        84.0%                        82.0%  2.0 pts.

     Average
     length
     of
     haul                            979                           960            2.0%

    Trips
     flown                       319,178                       309,271            3.2%


                             TOTAL YEAR
                             ----------

                                    2015                          2014    Change
                                    ----                          ----    ------

     Revenue
     passengers
     carried                 118,171,211                   110,496,912            6.9%

     Enplaned
     passengers              144,574,882                   135,767,188            6.5%

     Revenue
     passenger
     miles
     (000s)                  117,499,879                   108,035,133            8.8%

     Available
     seat
     miles
     (000s)                  140,512,514                   131,003,957            7.3%

    Load
     factor                        83.6%                        82.5%  1.1 pts.

     Average
     length
     of
     haul                            994                           978            1.6%

    Trips
     flown                     1,267,358                     1,255,502            0.9%

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SOURCE Southwest Airlines Co.