Taking a red eye flight is a great way to save time, since this type of flight typically allows one to sleep during the flight. Red eye flights are sometimes available when traveling from west to east (eastbound flights). On longer westbound intercontinental flights redeyes are also sometimes available.
Here are answers to some commonly asked questions about red eye flights.
What's a red eye flight / define red eye flight: an overnight flight where one departs in the evening and arrives in the morning.
How to find red eye flights: one way is by using one of the flight search engines, enter your origin and destination, and then sort the flights by departure time. Flights leaving very late in the evening might be redeye flights.