My recent flight with WestJet Airlines JFK Terminal 4 went well from beginning to end. The terminal was tidy, orderly, and simple to use. Security and check-in went well, and the WestJet employees were welcoming and supportive the entire time. I liked that there were good food selections and cozy seats close to the gate. The entire process felt smooth, and the boarding was on time. Overall, my flight on WestJet from JFK was fantastic.
Also, you can go to What Terminal is Delta Airlines at LAX?