Pacific Airlines, Ho-Chi-Minh City, Vietnam, 1991-2008, absorbed by JetStar Australia(q.v.),
and renamed as Jet Star Pacific(q.v.).  Old name revived in June 2020.    -  #1,      #2:

Palau Pacific Airways, Koror, Palau,  2014-2018.     -  #1:

PAN AM, New York, USA, 1930-1991.      -   #16a        and               #21:

#2/#3/#6/#9(different paper and print),                     #12 (front and base):   

#15,                                                    #4,                                                 #17:

Pantanal Linhas Aerea, Sao Paulo, Brazil, 1993-2013.  -  #1:

Paramount Airways, Bristol, UK, 1987-1989.   - #1:

Paramount Airways, Madurai, India, 2005-2010.   -   #1:

Passaredo Linhas Aereas, Sao Paulo, Brasil, founded 1995.   -  #5:                                                          

Peach Air, London, UK, 1996-2000 merged into JMC.     -    #1:

Peach Aviation, Osaka, Japan, founded 2011, debut flight March 1st, 2012.    -  #1:

Pegasus Airlines, Istanbul, Turkey, founded 1989. 
  -   #1,                                   #2(normal paper)/#3(glossy)/#4(diff maker, same print rear):

Pelita Air Service, Jakarta, Indonesia, founded 1963.  -    #1:

People Express, Newark, N.Y., USA, 1981-1987 absorbed by Continental.    -  #3:

PEOPLE's Viennaline, Dornbirn, Austria. Founded 2010. 
Home base is St.Gallen- Altenrhein, Switzerland.     - #1:

Peruvian Airlines, Lima, Peru, 2007 - 2019.         -   #1:

Petroleum Air Services PAS, Cairo, Egypt, founded 1982.     -  #3

Philippine Airlines, Manila, founded 1941.   -  # 11,           #2,         #10/#17(bolder letters):

   -   #15,                                                     # 4,                                             #1:

    -          #16,                                                    #9,                                      21:

Phuket Airlines, Bangkok, Thailand, founded 1999.      -    #2:
 
PIA - Pakistan International Airlines, Karachi, founded 1951.    - #2,     #14,      #16:

              -       #12/#19,                    #3,                           #6:        

       -         #1,                                   #25,                               #31:

PLUNA - Primera Linea Uruguaya de Navegación Aérea, Montevideo, Uruguay, 1936-2012.
-     #1,                                                                  #9,                                               #3a:  

-          #8,                                                     #2:

PNG Air, Port Moresby, Papua-NewGuinea, founded 2005.  -  #2(front and rear shown):

Portugalia Airlines, Lisbon, founded 1989.          -  #1,                   #3:

Pouya Airline, Teheran, Iran, founded 2012.      -  #1.V2 :

Precision Air, Dar-es-Salaam, Tanzania,  founded 1991.    -  #2,         #3,             #5:

Premiair, Copenhagen, Denmark, 1994-2002, founded by merger
of Conair, DK and Scanair, SE. 2002 rebranded as MyTravel Airways (q.v.).
      # 1,                                     #2                     and                    #4:

President Airlines, Phnom Penh, Cambodia, 1997-2007.  -  #2:

Presidential Airways, Herndon, Virginia, USA, 1985 - 1989.    -   #1:

Primera Air, Billund, Denmark, founded 2008 by renaming from 2003 founded JetX, ceased 2018.
-         #1,                                                     #2:

Privat Air, Meyrin, Switzerland,  1977 - 2018 .    -  #1(normal paper)/#1a(glossy paper):

Privilege Style, Palma de M., Spain, founded 2003.   -   #1,              #2:

Generic bag, found in Proteus Air, Lyon, France, based. Proteus belongs to Air France.

Pulkovo Airlines, St. Petersburg, Russia, 1932-2006 merged into Rossija(q.v.).
-    #4,                                                 #2,                                                #5:

Puma Air, Belém, Brazil, 2002-2011.            - #2: