Already known for its low flight prices, budget carrier WOW Air is now offering travelers half off round-trip airfare on all its routes.

The airline is offering 50 percent off round-trip tickets booked between Dec. 12 and 16 for travel between Dec. 12 and March 31, 2019, giving travelers the chance to explore popular European destinations like Alicante, Amsterdam, Berlin, Brussels, Copenhagen, Dublin, Dusseldorf, Edinburgh, Frankfurt, Gran Canaria, London, Lyon, Paris, Reykjavik, Tenerife, and Warsaw.

To receive the discount, travelers simply need to use the promo code WOWXMAS when making a booking. Tax and service fees (which start at around $80) and the fuel surcharge (which starts at around $20) are not included in the discount and are added to the final price of flights.

While WOW Air is known to offer a free stopover program that gives passengers the ability to stop and explore Iceland for an extended layover on return flights between North America and Europe, passengers who want to take advantage of the promotion code will need to forego this perk when booking their flight.

Prices are subject to change, but some of WOW Air's lowest rates currently include $150 round-trip flights from the U.S. to Europe. Passengers will want to note that WOW Air is a budget carrier and does charge additional fees for amenities such as checked baggage and seat selection, which will add to the overall price of a flight.

“We are thankful for our WOW passengers and are happy to offer the gift of travel this holiday season for a low price,” WOW Air CEO Skúli Mogensen said in a statement. "At WOW Air, we are committed to making travel more affordable and accessible to all, knowing that the memories made are gifts that keep giving throughout the year.”