When entering ORD, you’ll encounter a lot of traffic, as cars continuously drop off and pick up passengers at the airport. You’ll also encounter lengthy lines at its security checkpoints, which is not surprising as the airport tends to have massive passenger traffic. On several occasions, passengers have missed their flights at this airport after being stuck in the airport’s traffic or being delayed at its security checkpoints. To avoid such a predicament, on the date you’re set to fly to EWR from ORD, it’s in your best interest to get to ORD at least 2h before your flight.