Go to Google Flights.
Enter your departure city or airport and destination. Note: You can also find destinations by clicking on a popular destinations list or on a world map.
At top, select your ticket type: one-way, roundtrip, or multi-city.
At top, select the number of passengers and cabin class.
Click the calendar to select your flight dates. You’ll see the lowest total price to fly for each day. Note: Flight prices are updated approximately once every 24 hours.
To filter your results, click Stops, Airlines, Times, or More.
Click Sort by to re-order flights. You can see results by Best Flights (a default order that gives you the best trade-off between price and convenience, based on factors such as duration, number of stops, and airport changes during layovers), Price, Duration, and Departure Time.