Here are two ways you can check your prefered flight status.

1. Checking Flight status by FLIGHT

You will need to know the Airline and the flight number.
Then select the date you want to check for, and click search.
eg: Airline : UL
Flight Number: 506
Date: 14 May 2009

2. Checking Flight status by ROUTE

You will need to know Departure airport and Arrival airport.
Then select the date you want to check for, and click search.
eg: Departure: (LHR) Heathrow Airport, London, EN, GB
Arrival: (MLE) Male Intl, MV
Date: 14 May 2009