Some of you might like to know how to do Spirit web check-in? If yes then read this section carefully. If you are the one who can’t afford the pain that comes from standing and waiting in a long queue at the airport and the additional payment that the passengers might have to pay for booking additional packages then you must consider doing the web check-in. As we are talking about Spirit online web check-in, it is important to know when one can do web check-in. Here is the answer to this commonly asked question.