Portugal's national airline, TAP, is set to roll out a new program that will entice you to visit the Mediterranean hotspot with free stopovers in the gorgeous capital city of Lisbon. 

The welcoming program lets passengers flying from the US to Europe via Portugal, to extend their stay in Lisbon for a number of days, free of charge. 

As part of the deal, you can also get a free flight from Lisbon to the beautiful coastal city of Porto in northwest Portugal through the country's domestic carrier. Porto is the country's second biggest metropolis and is just 200 miles to the north of Lisbon, so it's easy to squeeze into your itinerary. 

If you want to get in on this deal, you'll need to book before it ends on October 18. Check out TAP's website for details and FAQ.