To cancel a flight, you must reach out to the airline or booking site with whom you completed the transaction. Skiplagged does not sell flight tickets directly so we have no access to your reservation.
When you use the Book with Skiplagged feature for some airlines, your reservation is made directly with the airline instead of a 3rd party. Thus, any changes you need to make should be done directly with the airline. We introduced this feature for your convenience because the cheapest tickets are sometimes hard to locate online.