You have the following check-in options for your flight: Automated Check-in Online Check-in Check-in machine at the airport Check-in-counter at the airport; We will inform you about your check-in options are available during the booking process on swiss.com. At most airports you need to arrive 3 hours before departure. However, currently it can be up to 6 hours at some airports, so please check your ticket for the best time to arrive for your journey. Remember to give yourself enough time to reach your departure gate so you don’t miss your flight. "Whether the 30-minute or the 60-minute cut off applies depends on where exactly the document check happens and what specific doc check is required. " -> As specified in the question, the check-in happens at the United Airlines counter at SFO. Typically check-in deadlines are mentioned somewhere online, because airlines don't want each customer Learn about the documents needed when flying to destinations outside the United States. When traveling across international borders, customs and immigration will require that you provide proof of citizenship. This proof can vary, as each country has its own requirements for entry. In order to get through the check-in and security process You can check in online or from the app starting 24 hours before and up to 45 minutes before your flight (90 for international). Check-in online. American Airlines app. To check bags or check in at the airport, you must be there a certain amount of time before scheduled departure: Within the U.S. – 45 minutes. Our ticketing and check‑in desks will be open daily from 8:00am to 10:00pm. You can check in with our agents, self check‑in kiosks or with the world’s first ever check‑in robot assistant. And while you’re there, browse a selection of Emirates‑branded items at our Travel Store and have your order delivered to you. Go to your respective airline’s official website. Enter the PNR or the Booking Reference Number and the Last name/email of the passenger (s). Select the passenger (s) you want to check-in. Choose the desired seat (s) from the available seat map and click on “Proceed”. Finally, click on the “Check-in” button to generate your boarding pass. Web & Self Service Machines shall be available on all Domestic & International Flights except for USA flights. Passenger will be required to get their travel documents verified at check-in counters prior to proceeding to the boarding gates through different communication channel that for international flights only. .

is online check in mandatory for international flights