Set sail on an adventure of a lifetime with this 11-night cruise to Antarctica over the December winter holidays for US$7121 per person. That's a saving of $2370 on regular prices, which can instead be put toward airfare.

With a chance to set foot on the world's southernmost continent and abundant opportunities for wildlife encounters, this offer from Quark Expeditions will cross one more journey off a travel bucket list.

Board the Ocean Diamond in Ushuaia, Argentina, then begin the voyage by crossing through the Drake Passage before reaching the Antarctic Peninsula. Excursions allow travelers to walk around this incredible landscape and look for wildlife, including penguins, humpback whales and leopard seals. Click here to see the full itinerary.

The deal includes:

• Accommodation in a Twin Window cabin
• Shipboard breakfasts, lunches and dinners
• Shore landings and excursions
• Professional expedition leadership including educational presentations

This is valid for travel departing on Dec. 17, a time considered one of the best to visit for longer days with more sunshine.

The Ocean Diamond is a vessel that can accommodate up to 189 passengers and is built to navigate the icy waters of the Antarctic Peninsula. All cabins have exterior views and ensuite bathrooms, with flat-screen TVs and DVD players in each room. Other onboard facilities include a gym, library and lounge.

For a longer adventure, Quark Expeditions has 16- and 20-night trips that also take in South Georgia and the Falkland Islands starting at US$9971 per person, more than $3000 off regular prices. Click the booking link for additional details.

Travelzoo Tip: International flights are not included -- search for flights to Ushaia using Fly.com/ca. Quark Expeditions can also arrange flights as part of the booking.