Madrid Barajas Airport (MAD) to Porto bus

Alsa is the main bus company in Spain, a subsidiary of the UK bus company National Express. Alsa offers a wide variety of national and international routes and transports more than 300 million passengers every year. Apart from the Standard fare, Alsa provides ticket types like Minimum, Reduced and Flexible fares on select routes for those looking to save money on bus journeys. While most travelers don’t mind traveling on normal buses with basic services like bathrooms, free WiFi, footrests and onboard entertainment, some others may want to check out Alsa’s deluxe buses like the Alsa Supra, Alsa Eurobus and Alsa Premium, which provide more luxurious amenities on specific routes.

FlixBus is one of the most popular low-cost bus companies in Europe. Founded in Germany, FlixBus has expanded its services throughout Europe and even to the United States, giving travelers in both continents the option to take a long-distance bus at an affordable price. FlixBus also operates overnight buses on select routes throughout Europe. FlixBus offers only the Standard ticket for all its routes, which allows you to bring one carry-on bag and one checked bag per person. Additional fees apply for bringing extra luggage and making specific seat reservations, such as if you want to book an Extra Seat, Table Seat or the Panorama Seat. Standard amenities onboard include free Wi-Fi, power outlets to charge your phone, tablet or laptop during long bus journeys, extra legroom, luggage space and toilets.

BlaBlaCar Bus (formerly known as Ouibus or iDBUS), a subsidiary of the popular French carpooling company, BlaBlaCar, is a bus company operating long-distance services in 10 countries in Europe. Founded in France, BlaBlaCar Bus provides connections to over 300 destinations. Standard amenities on the buses include air conditioning, toilets, USB and power outlets for charging phones, tablets and laptops during long bus journeys, extra legroom and adjustable seats. On select routes there is also free Wi-Fi available. BlaBlaCar Bus offers only the Standard ticket for all its routes, which allows you to bring one carry-on bag and up to two checked bags per person.