Take advantage of some great price drops on Frontier Airlines for international travel. Fly to Mexico and the Caribbean, with prices as low as $166 roundtrip from a few US cities to Cancun (CUN), Puerto Vallarta (PVR), Montego Bay (MBJ), and Punta Cana (PUJ).

As an example, I found $166 roundtrip flights departing Raleigh RDU on Thursday, December 6, returning from Cancun CUN on Thursday, December 13.

Travel is valid through February 13, 2019, with a 7-day advance purchase required. Avoid blackout dates on November 17-26, December 20, 2018 - January 8, 2019, and January 18-21, 2019. Some routes are seasonal and most routes are only operated on select days each week. Click on the fare details for more information on each route.

Tickets must be booked by 11:59 pm ET, on August 28, 2018.

Nonstop fares include:

Chicago to Cancun $166 roundtrip

Denver to Cancun $166 roundtrip

Raleigh to Cancun $166 roundtrip

Philadelphia to Punta Cana $194 roundtrip

Raleigh to Punta Cana $194 roundtrip

Denver to Puerto Vallarta $200 roundtrip

Philadelphia to Cancun $206 roundtrip

Cleveland to Cancun $206 roundtrip

Kansas City to Cancun $206 roundtrip

Raleigh to Montego Bay $209 roundtrip

Cincinnati to Cancun $216 roundtrip

Chicago to Puerto Vallarta $302 roundtrip

St. Louis to Cancun $304 roundtrip

Cleveland to Punta Cana $374 roundtrip

Cincinnati to Punta Cana $394 roundtrip

St. Louis to Punta Cana $394 roundtrip

Chicago to Punta Cana $424 roundtrip

Keep in mind that Frontier charges extra for any bag larger than a small personal item (small backpack, purse, etc.). Pack a swimsuit and hit the beach. If you need to bring more, checked bags start at $25 each way. Larger carry-on bags start at $30 each way.

Another option is to add the Works bundle when booking on FlyFrontier.com, which includes one checked bag, one standard sized carry-on bag, stretch seating, no change fees, and refundability. Adding the Works to my example from Raleigh to Cancun brings the fare to $325 roundtrip.

For more information on Frontier, find out Everything You Need to Know Before You Fly Frontier.

Need a place to stay in Cancun? Here's what's available for the mentioned dates on Hotelwatchdog.