Airfares are constantly changing, making it difficult to determine a reasonable price. Expedia's new Flight Deals tool helps travelers find discounted airfares by analyzing millions of flights daily.

If you're looking to bag cheap flights, is it really worth staying up late to get those incredible deals, or is it a myth?

Get more news like this delivered to your inbox by signing up for our Travel newsletter here. When booking a flight, chances are you want to score the best deal. This is especially true now that ...