Swiss Airlines' cancellation and refund policies can vary depending on the type of ticket purchased and specific circumstances. Here’s a general overview:

1. 24-Hour Risk-Free Cancellation:
Swiss allows passengers to cancel a ticket purchased directly from Swiss within 24 hours of booking for a full refund. This applies as long as the ticket was purchased at least 7 days prior to departure.
2. Non-Refundable Tickets:
If you cancel a non-refundable ticket (Basic Economy, Main Cabin, Swiss Comfort+, or First Class), you will not receive a refund, but the value of the ticket can be applied towards future travel on Swiss, minus any applicable change fees.
3. Refundable Tickets:
Refundable tickets, such as Swiss One or Swiss Premium Select fares, can be cancelled at any time before departure for a full refund.
4. Basic Economy Tickets:
Typically, Basic Economy tickets are non-refundable and non-changeable. However, during the COVID-19 pandemic, Swiss temporarily allowed changes and cancellations for Basic Economy tickets without change fees for certain dates of travel. Always check Swiss’s current policies for the most accurate information.
5. International Flights:
Policies may vary for international flights, so it's important to check the specific rules that apply to your itinerary.
How to Cancel and Request a Refund:
You can cancel your flight and request a refund online through Swiss’s website or by calling Swiss Reservations. Refunds are generally processed back to the original form of payment.
Additional Considerations:
Swiss Travel Credits: If you cancel a non-refundable ticket and are not eligible for a refund, you may receive an eCredit for future travel, valid for one year from the date of issue.
Exceptions: In some cases, such as due to illness or a change in military orders, Swiss may provide exceptions to their standard cancellation policies.