Find out why Newark Airport’s code is EWR rather than NEW, what KEWR means, and which identifier to use in a flight simulator.
Newark Liberty International Airport uses EWR because, when US airport identifiers were being standardised, codes beginning with N were reserved for the US Navy. Newark therefore took three letters from within “Newark”: E, W and R. NEW was unavailable, and EWR remained unchanged when “Liberty” joined the airport’s name.
Why couldn’t Newark use NEW?
The leading N was unavailable to Newark under the historical US identifier-allocation system. The alternative EWR was formed from letters appearing in order within nEWaRk; it is not an abbreviation of Liberty, New Jersey or New York.
A common explanation says Newark simply lost NEW to another airport. That misses the original constraint: N-prefixed identifiers were reserved when Newark received its code. NEW is now assigned to Lakefront Airport in New Orleans, so it cannot represent Newark in modern aviation systems either.
What do EWR, KEWR, NYC and NEW mean?
For Aviation & Real-World Flying, EWR is Newark’s three-letter IATA code, while KEWR is its four-letter ICAO identifier.
| Code | Meaning | Typical use |
|---|---|---|
| EWR | Newark Liberty International Airport | Tickets, baggage labels, airline schedules and FAA identification |
| KEWR | Newark’s ICAO identifier | Flight plans, charts, avionics and simulator navigation databases |
| NYC | New York metropolitan-area code | Groups airports such as EWR, JFK and LGA in travel searches; it is not one airport |
| NEW | Lakefront Airport, New Orleans | Its three-letter airport identifier |
| KNEW | Lakefront Airport’s ICAO identifier | Flight planning and simulator databases |
The K in KEWR is the ICAO prefix used for airports in the contiguous United States. Our explanation of matching airline routes with simulator airport codes covers why route listings often show EWR while an aircraft’s flight-management system expects KEWR.
Which Newark code should I enter in a flight simulator?
Use KEWR when a simulator, flight planner, GPS or FMS requests an ICAO identifier; use EWR only when the field requests an IATA or three-letter airport code.
- ICAO or four-character field: enter
KEWR. - IATA or three-character field: enter
EWR. - Airport-name search: select Newark Liberty International Airport and verify that the result shows Newark, New Jersey.
Do not convert NEW into KNEW when trying to find Newark. That valid code takes you to Lakefront Airport in New Orleans. You can confirm the destination through our world airport identifier database, or use our method for checking an airport’s ICAO code when a planner accepts only four characters.
Did adding “Liberty” change the airport code?
No. The airport became Newark Liberty International Airport in 2002, but established airport identifiers normally survive name changes. Retaining EWR avoids disruption across reservations, baggage systems, charts, databases and flight plans, so “Liberty” contributes no letter to the code.