Airline IATA Code Telephone # Departure Zone Aer Lingus EI 800-474-7424 Zone #1 Aeromexico AM 800-237-6639 Zone # 1 Air Canada AC 888-247-2262 Zone #3 Air China CA 800-882-8122 Zone #1 Air France AF 800-237-2747 Zone #2 Alaska Airlines AS 800-252-7522 Zone #3 Allegiant G4 702-505-8888 Zone #1 American Airlines AA 800-433-7300 Zone #2 ANA NH 800-235-9262 Zone #3 Austrian OS 800-843-0002 Zone #3 Avelo XP 346-616-9500 Zone #1 Avianca AV 800-284-2622 Zone #3 Boliviana de Aviación OB 800-584-4099 Zone #1 Breeze Airways MX See Website Zone #1 British Airways BA 800-247-9297 Zone #1 Brussels Airlines SN 800-401-1801 Zone #2 Contour Airlines LF 888-332-6686 Zone #2 Copa Airlines CM 800-359-2672 Zone #2 Delta DL 800-221-1212 Zone #1 Egyptair MS 212-315-0900 Zone #1 Emirates EK 800-777-3999 Zone #2 Ethiopian ET 800-445-2733 Zone #1 Etihad Airways EY 877-690-0767 Zone #1 Frontier F9 801-401-9000 Zone #3 Iberia IB 800-772-4642 Zone #3 Icelandair FI 800-223-5500 Zone #3 ITA Airways AZ 877-793-1717 Zone #1 KLM KL 800-618-0104 Zone #2 Korean Air KE 800-438-5000 Zone #2 Lufthansa LH 800-645-3880 Zone #3 Porter PD 888-619-8622 Zone #1 Qatar Airways QR 877-777-2827 Zone #2 Royal Air Maroc AT 800-344-6726 Zone #2 Royal Jordanian RJ See Website Zone #1 Saudia SV 800-472-8342 Zone #1 Scandinavian Airlines SK 800-221-2350 Zone #3 Southern Airways Express 9X 800-329-0485 Zone #3 Southwest WN 800-435-9792 Zone #1 Sun Country Airlines SY 651-905-2737 Zone #1 Swiss LX 833-626-0737 Zone #3 TAP Air Portugal TP 800-221-7370 Zone #3 Turkish Airlines TK 800-874-8875 Zone #3 United UA 800-241-6522 Zone #4 Virgin Atlantic VS 800-862-8621 Zone #2 Volaris Y4 855-865-2747 Zone #1 WestJet WS 888-937-8538 Zone #1 Hide related content Off Editorial Section(s) Flight Information Banner image hm_header_IAD_terminal.jpg