Expedia is a well-known travel platform that provides a lot of services like: Car rentals, Flights, Hotels, etc. While the ability to book everything in one spot is super convenient, figuring out Expedia's cancellation policy can sometimes feel like wandering through a maze. The main thing to remember is that Expedia's policy often reflects or is influenced by the individual rules of the airlines, hotels, and other service providers it collaborates with. 

The 24-Hour Rule: 
The 24-hour free cancellation window is one of the popular traveller-friendly features of Expedia's policy. This generally lets you cancel or modify your reservation within 24 hours of booking for a full refund, without any fees. This policy is in line with U.S. Department of Transportation regulations for flights and is a huge plus if your plans change shortly after you book. Beyond the 24-Hour Window: It Gets Specific. Once you’ve passed that initial 24-hour grace period, the cancellation terms get a bit more detailed based on the type of booking and the specific provider:

Flights:

• Airline Policies Rule: After the 24-hour window, flight cancellations are mainly governed by the airline's specific fare rules. So, if you booked a non-refundable economy fare, you might not get a refund, or you could only receive an airline credit, often with a change fee taken out.

• Refundable vs. Non-Refundable: When you’re booking, make sure to check whether the fare is refundable or non-refundable. Fully refundable tickets give you the most flexibility but usually come with a higher price tag.

• Expedia Fees: While Expedia doesn’t charge a fee for cancellations within the 24-hour window, it’s important to be aware of the specific terms that apply after that period.

Hotels:

• Provider's Discretion: When it comes to hotel cancellations, policies could be different. A lot of hotels will let you cancel for free up to 24 to 48 hours before your check-in time, and they’ll make sure to highlight this when you book.
• Non-Refundable Rates: Watch out for those "non-refundable" rates! They might seem like a steal, but if you need to cancel, you’re out of luck, no matter when you decide to do it.
• Partial Refunds/Penalties: Some hotels might offer partial refunds or charge a one-night fee if you cancel within a certain period before your arrival. 

Holiday Packages:

• Component-Based Policies: Holiday packages that bundle flights, hotels, and sometimes car rentals or activities can be a bit tricky. Each part of the package usually follows its own cancellation rules set by the individual providers.

• Potential for Fees: When you are learning about Expedia's cancellation policy, you should also know that if you decide to cancel a holiday package after 24 hours, be prepared for possible fees from the airline, hotel, or car rental company, which Expedia will then pass on to you.

Conclusion

Hopefully, after reading the above guide, which is about What is the cancellation policy on Expedia? Still, there are some key principles and important timeframes you should keep in mind, and to learn those, you can visit the official website of Expedia.