The process of booking Perth to Melbourne Virgin Australia Flight is actually quite simple and straightforward. The first step is to go to the Virgin Australia website (virginaustralia.com) and click on the "Book Flights" link at the top of the page. This will take you to their booking engine.

On the booking page, you'll want to enter Perth Airport (PER) as your departure airport and Melbourne Airport (MEL) as your arrival airport. Click into the date box to open up a calendar view to select your preferred travel dates. You can check one way or return flights. Once you've entered the route and dates, click the search icon or "Find Flights" button.

 This will run a flight search and return a list of available Virgin Australia flights on your chosen dates. You'll be able to view various details like departure/arrival times, any stops or connections, aircraft type, and baggage allowance. Importantly it will show the fare type - Economy, Flexible, Business etc - each with varying policies and inclusion. 

 You can use the filters on the left side to refine and compare flights by:

• Price: slidable scale to set min and max fares

• Stops: Direct or 1 stop options

• Departure/Arrival time: narrow to preferred times

• Cabin class: Economy, Business etc

• Airlines: Virgin/Alliance flights  

Consider the options carefully as flight times, services and policies may differ. If you need to check multiple dates, use the date box on top to run a new search quickly.

Once you’ve found a suitable Perth to Melbourne flight, click the “Select” button to add it into your booking. A pop-up window will come up to choose passenger numbers and details before officially selecting the flight.

With the flights selected, you can now proceed through the booking form. If you already have a booking account you can sign in here to access bookings faster. Or checkout as a guest.

You'll need to enter essential passenger data like full name, gender and contact. There are also optional fields for extras like frequent flyer details, meal requests and insurance.

 After passenger info, you'll select your preferred seat options from an interactive seat map. Seats have varying legroom, recline and proximity to amenities so review carefully before confirming selection. Some seats or exit rows can have additional fees.

Next up is baggage selection if needed. The economy fare you picked earlier comes standard with a set checked baggage allowance - make sure to understand and adhere to this to avoid excess fees. If more is needed you can pay to add extras suitcase here.

Almost there! The payments page comes next where you must enter credit or debit card information. Double check the full fare breakdown including flights, passengers, bags and extras before providing card details. Accepted payment methods will be listed.

There will likely be one final information review page before confirming the whole booking. Look over the flight times, passenger data, fare rules one last time before hitting that Purchase button!

And that's it - you've now successfully booked your Virgin Australia flights from Perth to Melbourne through their booking system! You'll receive a confirmation email and e-ticket outlining key details of your upcoming trip. And any time before departure you can log into your Virgin account to check on your booking status, manage flights and make changes as needed per the fare rules.

 Some key things to remember when booking:

• Have travel dates and passenger numbers handy

• Compare flight times and options in search

• Note fare types and their respective policies

• Enter accurate passenger information

• Pick seats and extras as required

• Be aware of baggage allowances 

• Have payment card or details ready

• Review booking thoroughly before purchasing