Major Global Airlines
Most of the larger airlines are listed here. If you need an airline that's not on this list, let me know.
 (EI) | Aer Lingus Dublin, Ireland [www] 800-474-7424 Hubs: Dublin Airport |
 (AM) | Aero Mexico Mexico City, Mexico [www] 800-237-6639 Hubs: Mexico City International Airport, Monterrey International Airport |
 (AC) | Air Canada Montreal, Quebec, Canada [www] 888-247-2262 Hubs: Toronto Pearson International Airport, Montréal–Trudeau International Airport, Vancouver International Airport |
 (CA) | Air China Beijing, China [www] 800-882-8122 Hubs: Beijing-Capital, Chengdu, Shanghai-Pudong |
 (AF) | Air France Tremblay-en-France, France [www] 800 375-8723 Hubs: Paris-Charles de Gaulle, Paris-Orly |
 (AI) | Air India New Delhi, India [www] 888-634-1407 Hubs: Delhi, Mumbai, Bengaluru, Kolkata, Hyderabad, Chennai |
 (NZ) | Air New Zealand Auckland, New Zealand [www] 800-262-1234 Hubs: Auckland Airport, Wellington International Airport, Christchurch International Airport |
 (AS) | Alaska Air SeaTac, Washington, USA [www] 800-252-7522 Hubs: Seattle–Tacoma International Airport, Portland International Airport, Anchorage International Airport |
 (NH) | All Nippon Airways Tokyo, Japan [www] 800-235-9262 Hubs: Tokyo-Haneda, Tokyo-Narita, Osaka-Kansai |
 (AA) | American Airlines Fort Worth, Texas, USA [www] 800-433-7300 Hubs: Dallas/Fort Worth, Charlotte, Philadelphia, Phoenix, Washington-National, Miami, Chicago-O'Hare, Los Angeles, New York-JFK, New York-LaGuardia |
 (OS) | Austrian Airlines Schwechat, Austria [www] 800-843-0002 Hubs: Vienna International Airport |
 (BA) | British Airways London, United Kingdom [www] 800-247-9297 Hubs: London-Heathrow, London-Gatwick |
 (CX) | Cathay Pacific Hong Kong [www] 833-933-2244 Hubs: Hong Kong International Airport |
 (MU) | China Eastern Airlines Shanghai, China [www] 626-583-1500 Hubs: Shanghai-Pudong, Shanghai-Hongqiao, Kunming, Xi'an |
 (CZ) | China Southern Airlines Guangzhou, China [www] +86 4008695539-1-2 Hubs: Beijing-Daxing, Guangzhou, Urumqi |
 (DL) | Delta Air Lines Atlanta, Georgia, USA [www] 800-221-1212 Hubs: Atlanta, Boston, Detroit, Los Angeles, Minneapolis/St. Paul, New York-JFK, New York-LaGuardia, Salt Lake City, Seattle/Tacoma |
 (U2) | EasyJet Luton, United Kingdom [www] +44 (0) 330 5515151 Hubs: London-Gatwick, Geneva, Milan-Malpensa, Bristol, Manchester |
 (EK) | Emirates Dubai, United Arab Emirates [www] 800-777-3999 Hubs: Dubai International Airport |
 (ET) | Ethiopian Airlines Addis Ababa, Ethiopia [www] 800-445-2733 Hubs: Addis Ababa Bole International Airport |
 (E2) | Eurowings Europe Vienna, Austria [www] +49 (0)221 599 882 22 Hubs: Vienna International Airport |
 (BR) | Eva Air Luzhu, Taoyuan City, Taiwan [www] 281-209-0022 Hubs: Taoyuan International Airport (Taipei) |
 (GA) | Garuda Indonesia Tangerang, Banten, Indonesia [www] 800-342-7832 Hubs: Soekarno–Hatta International Airport, Ngurah Rai International Airport |
 (G8) | GoFirst Mumbai, Maharashtra, India [www] +91 22 6896 8300 Hubs: Mumbai, Delhi, Bengaluru, Kolkata, Chennai |
 (HA) | Hawaiian Airlines Honolulu, Hawaii, USA [www] 800-367-5320 Hubs: Daniel K. Inouye International Airport (Honolulu) |
 (IB) | Iberia Lineas Madrid, Spain [www] 800-772-4642 Hubs: Adolfo Suárez Madrid–Barajas Airport |
 (6E) | IndiGo Gurugram, Haryana, India [www] 877-606-2560 Hubs: Delhi, Mumbai, Kolkata, Bengaluru, Hyderabad, Chennai, Dubai |
 (JL) | Japan Airlines Tokyo, Japan [www] 800-525-3663 Hubs: Tokyo-Haneda, Tokyo-Narita, Osaka-Kansai, Osaka-Itami |
 (QJ) | Jet Airways Mumbai, India [www] 877-835-9538 Hubs: Chhatrapati Shivaji Maharaj International Airport, Indira Gandhi International Airport |
 (KL) | KLM Royal Dutch Airlines Amstelveen, Netherlands [www] 800-618-0104 Hubs: Amsterdam Schiphol |
 (KE) | Korean Air Seoul, South Korea [www] 800-438-5000 Hubs: Incheon International Airport |
 (VK) | Level Europe Vienna, Austria [www] 646-968-0631 Hubs: Vienna International Airport |
 (LH) | Lufthansa Cologne, Germany [www] 800 399-5838 Hubs: Frankfurt, Munich |
 (MH) | Malaysia Airlines Kuala Lumpur, Malaysia [www] 800-552-9264 Hubs: Kuala Lumpur International Airport |
 (QF) | Qantas Mascot, Australia [www] 800-227-4500 Hubs: Sydney, Melbourne, Brisbane, Perth |
 (QR) | Qatar Airways Doha, Qatar [www] 877-777-2827 Hubs: Hamad International Airport |
 (FR) | Ryanair Swords, Ireland [www] +44 113 868 4151 Hubs: Dublin, London-Stansted, Brussels-Charleroi, Milan-Bergamo, Barcelona-El Prat |
 (SK) | Scandinavian Airlines Solna, Sweden [www] 800-221-2350 Hubs: Copenhagen Airport, Stockholm Arlanda Airport, Oslo Airport |
 (SQ) | Singapore Airlines Singapore [www] 833-727-0118 Hubs: Singapore Changi Airport |
 (WN) | Southwest Airlines Dallas, Texas, USA [www] 800-435-9792 Hubs: Atlanta, Baltimore, Chicago-Midway, Dallas-Love, Denver, Houston-Hobby, Las Vegas, Los Angeles, Oakland, Orlando, Phoenix |
 (SG) | SpiceJet Gurugram, Haryana, India [www] +91 (0)124 4983410 Hubs: Delhi, Mumbai, Kolkata, Chennai, Bengaluru, Hyderabad |
 (LX) | SWISS International Air Lines Basel, Switzerland [www] 833-626-0737 Hubs: Zurich Airport, Geneva Airport |
 (TK) | Turkish Airlines Istanbul, Turkey [www] 800-874 8875 Hubs: Istanbul Airport, Istanbul Sabiha Gökçen |
 (UA) | United Airlines Chicago, Illinois, USA [www] 800-864-8331 Hubs: Chicago-O'Hare, Denver, Houston-Intercontinental, Los Angeles, Newark, San Francisco, Washington-Dulles |
 (VN) | Vietnam Airlines Hanoi, Vietnam [www] 415-677-0888 Hubs: Noi Bai International Airport, Tan Son Nhat International Airport |
 (UK) | Vistara Gurugram, Haryana, India [www] 480-443-5249 Hubs: Delhi, Mumbai, Bengaluru, Kolkata, Chennai, Hyderabad |
 (W6) | Wizz Air Austria Vienna, Austria [www] 0720 775 467 Hubs: Vienna International Airport |