Where can one compare prices for flights to Madrid?

* Google Flights: Google Flights is a popular flight comparison website that allows users to compare prices for flights from multiple airlines. It also offers a variety of filters to help you find the best flight for your needs, such as price, departure time, and arrival time.

* Kayak: Kayak is another popular flight comparison website that allows users to compare prices for flights from multiple airlines. It also offers a variety of features to help you find the best flight for your needs, such as a heat map that shows you the best days to fly and a price forecast that predicts how prices will change in the future.

* Skyscanner: Skyscanner is a flight comparison website that allows users to compare prices for flights from multiple airlines. It also offers a variety of features to help you find the best flight for your needs, such as a flexible date search and a multi-city search.

* Momondo: Momondo is a flight comparison website that allows users to compare prices for flights from multiple airlines. It also offers a variety of features to help you find the best flight for your needs, such as a price alert and a carbon footprint calculator.

* Hipmunk: Hipmunk is a flight comparison website that allows users to compare prices for flights from multiple airlines. It also offers a variety of features to help you find the best flight for your needs, such as a visual timeline of flights and a personalized recommendation engine.