국내선은 1시간전, 국제선은 2시간 전 공항에 도착하라는 룰이 깨졌다. 2022년 미국의 주요 공항 15곳을 대상으로 조사한 바에 따르면,  비행기를 놓치지 않으려면 미 국내선도 이륙 3시간 전에는 도착해야 한다고. 다음은 JFK, 뉴왁 등 미 15개 공항의 안전 도착 시간대. JFK는 2시간 58분 전, 뉴왁공항은 2시간 41분 전. 

<The 15 U.S. airports where you need to arrive the earliest>

Chicago O’Hare International Airport (ORD): 3 hrs 4 mins

Los Angeles International Airport (LAX): 2 hrs 59 mins

*John F. Kennedy International Airport (JFK): 2 hrs 58 mins

George Bush Intercontinental Airport (IAH): 2 hrs 55 mins

Dallas/Fort Worth International Airport (DFW): 2 hrs 50 mins

Miami International Airport (MIA): 2 hrs 48 mins

San Francisco International Airport (SFO): 2 hrs 45 mins

Charlotte Douglas International Airport (CLT): 2 hrs 45 mins

Philadelphia International Airport (PHL): 2 hrs 44 mins

^Newark Liberty International Airport (EWR): 2 hrs 41 mins

Seattle-Tacoma International Airport (SEA): 2 hrs 39 mins

Orlando International Airport (MCO): 2 hrs 36 mins

Boston Logan International Airport (BOS): 2 hrs 33 mins

Hartsfield-Jackson Atlanta International Airport (ATL): 2 hrs 31 mins

Denver International Airport (DEN): 2 hrs 30 mins 

Arrive extra-early at these 15 U.S. airports—up to 3 hours—if you don’t want to miss your flight

https://www.cnbc.com/2023/01/06/us-airports-you-need-to-arrive-two-to-four-hours-early.html