Guide

20 Most Common IATA Airport Codes Every Traveler Should Know

Jan 25, 2026 IATA Codes Team

Why Airport Codes Matter

Ever wondered why Los Angeles is LAX or why London Heathrow is LHR? IATA airport codes are three-letter identifiers that make global air travel possible. These codes appear on your boarding pass, baggage tags, and flight confirmations.

Top 20 Airport Codes You'll See Most Often

  1. LAX - Los Angeles International Airport (USA)
  2. LHR - London Heathrow Airport (UK)
  3. JFK - John F. Kennedy International Airport, New York (USA)
  4. CDG - Charles de Gaulle Airport, Paris (France)
  5. DXB - Dubai International Airport (UAE)
  6. ATL - Hartsfield-Jackson Atlanta International Airport (USA)
  7. ORD - O'Hare International Airport, Chicago (USA)
  8. FRA - Frankfurt Airport (Germany)
  9. SIN - Singapore Changi Airport
  10. AMS - Amsterdam Schiphol Airport (Netherlands)
  11. MAD - Adolfo Suárez Madrid-Barajas Airport (Spain)
  12. BCN - Barcelona-El Prat Airport (Spain)
  13. SFO - San Francisco International Airport (USA)
  14. IST - Istanbul Airport (Turkey)
  15. BOM - Chhatrapati Shivaji Maharaj International Airport, Mumbai (India)
  16. SYD - Sydney Kingsford Smith Airport (Australia)
  17. GRU - São Paulo/Guarulhos International Airport (Brazil)
  18. MEX - Mexico City International Airport
  19. YYZ - Toronto Pearson International Airport (Canada)
  20. ICN - Incheon International Airport, Seoul (South Korea)

Quick Tips for Remembering Codes

  • Some codes are obvious: NYC (New York City area), PAR (Paris area)
  • Others use old names: ORD comes from "Orchard Field"
  • Canadian airports often start with Y: YYZ, YVR, YUL

Calculate distances between any of these airports using our free tool.

✈️ Plan Your Trip

Find the best deals for your next adventure.

Find Flights Book Hotels