Booking cheap flights online is easier than ever with a variety of tools and strategies at your disposal. Start by using flight comparison websites that aggregate prices from different airlines, helping you find the best deals quickly. Be flexible with your travel dates, as flights are often cheaper on weekdays or during off-peak seasons. Setting up price alerts can also help you monitor fare drops and snag the best prices. Additionally, booking directly through airline websites can sometimes offer exclusive discounts. Don't forget to clear your browser cookies or use incognito mode to avoid price increases based on repeated searches.