Dozens of airlines serve LaGuardia, JFK and Newark airports. Due to heightened security at these airports, all airlines recommend you check in two hours in advance for domestic flights, and three hours in advance for international flights. During peak summer travel months, make every attempt to arrive at the airport even earlier. While American carriers generally assign seats in advance, most foreign airlines do not. In addition, some airlines require international travelers reconfirm their reservations by phone up to 72 hours prior to the flight. If you have questions or concerns about your flight, contact the airline directly for further assistance. For Americans traveling overseas, you should find out well in advance whether you will require visas for the countries you are visiting. For a list of foreign consulates' websites, click HERE. For U.S. State Department overseas travel warnings or if you are a foreign tourist who requires U.S. visa information, click HERE Do check our airports section for more information about all four public airports that service New York (JFK, LaGuardia, Newark and Teterboro). The major US airlines serving New York City airports are: American Airlines: (800) 433-7300 Continental Airlines: (800) 523-3273 Delta Airlines: (800) 221-1212 Jet Blue: (800) JET-BLUE Northwest: (800) 225-2525 Southwest: (800) 435-9792 United: (800) 241-6522 US Airways: (800) 428-4322 For an A to Z listing of airlines, office addresses and phone numbers, click HERE.