Converts full city names to 3-letter IATA airport codes using the airportr package. Returns all valid matching airport codes for cities with multiple airports. Automatically filters out heliports and excluded airports (those not used by Google Flights) to return only commercial airports. Throws an error if a city name is not found in the database.
Value
Character vector of 3-letter IATA airport codes. For cities with multiple airports, all valid codes are returned (e.g., "New York" returns c("LGA", "JFK")). Heliports, excluded airports, and invalid codes are automatically filtered out.
Examples
city_name_to_code("New York")
#> [1] "EWR" "LGA" "JFK"
city_name_to_code(c("New York", "London"))
#> [1] "EWR" "LGA" "JFK" "YXU" "LTN" "LGW" "LCY" "LHR" "STN" "LOZ"