For many travelers, online check-in has become a natural part of preparing for a trip. With just a few clicks, they can select their seat, download their boarding pass to their smartphone and reduce waiting times at the airport. At the same time, numerous processes are triggered behind the scenes to ensure the journey runs as efficiently and smoothly as possible. For travelers, the result is simple: a fast and convenient start to their trip.

The first step of the journey starts digitally
Board, take off and arrive as smoothly as possible. Online check-in makes this possible by connecting booking details, travel documents and government requirements. It is the key interface between travelers, the airline and the authorities.

Although the online check-in process appears intuitive to travelers, extensive processes are running in the background. Important passenger information is processed and verified before departure and, where required, transmitted to the authorities of the destination country in accordance with local regulations. This helps prepare immigration procedures in advance and supports a smooth experience both at the airport and upon arrival.

API: The data that travels with you
A central element of this process is Advance Passenger Information (API). These are personal passenger details that airlines are required to transmit to the authorities of certain destination countries before departure. SWISS applies the highest standards of security and data protection to ensure this information is handled safely and accurately.

API includes:

• Name exactly as shown in the travel document
• Date of birth
• Nationality
• Passport number and expiry date
• Gender

This information allows authorities to prepare immigration decisions before the aircraft lands. For travelers, this usually means fewer surprises upon arrival provided all information is complete and accurate.

Small details, big impact
Because many of these processes are highly automated, accuracy is essential. A misspelled name or a single incorrect digit in a passport number can have significant consequences. For example:

• Online check-in may not be completed.
• Additional document checks may be required.
• In individual cases, boarding may be delayed or even denied.

A smooth start begins with the right preparation
A few simple steps can help ensure online check-in runs smoothly:

• Enter your details exactly as shown
  All information must match the traveler's passport or ID card exactly, including the spelling and order of names.
  
• Enter API details for each traveler individually
  API information must be entered separately for every passenger. For example, one family member's passport number must never be used for the entire family.
• Have your travel documents ready during online check-in
  Use your passport or ID card when completing online check-in. Entering information from memory can easily result in mistakes.
• Check document validity
  Some countries require passports or other travel documents to remain valid for a certain period beyond the return date. Be sure to check the entry requirements of your destination well in advance.
• Obtain any additional travel authorizations
  An increasing number of countries require electronic travel authorizations (such as ESTA or ETA) or visas in addition to a valid passport or ID card. Depending on the destination, these may also be required for transit. Make sure to check the relevant requirements before you travel.

The essentials for a hassle-free journey

• Always book your trip using the exact name shown in your passport or ID card without nicknames or abbreviations.
• Check well in advance that you have all the required travel documents, such as a valid passport or ID card and, depending on your destination, a visa, ESTA or ETA travel authorization. Further information is available from the relevant diplomatic authorities or on the SWISS website under Worldwide entry requirements.
• Ensure that the details from each traveler's travel document are entered completely and accurately in the appropriate fields.
• Whenever possible, use our online check-in via the SWISS website or the SWISS App.
• If online check-in is not available, allow sufficient time and arrive at the airport early to complete check-in and drop off your baggage.
• Be at the gate no later than the indicated boarding time. Depending on your destination, your travel documents may be checked once more before boarding.
• Sit back, board your flight and enjoy travelling with SWISS. Have a great trip!