Key carrier comparisons for LAX–JFK in June: Delta Air Lines often offers multiple daily nonstop options with Delta One and Comfort Plus seating, American Airlines has competitive schedules and loyalty benefits, and JetBlue frequently markets premium Mint/Even More Space seats on some transcon routes. Compare amenities (legroom, Wi-Fi, in-flight dining), baggage allowances, and change/cancellation policies when choosing. For the cheapest June fares, check budget-friendly sale windows and flex-date searches across carriers. CTA: Compare airlines now to pick the best LAX to JFK flight and fare for your June trip.