Take 50% off the base fare on your next Volaris flight by selecting the "50% off USA & within Mexico" promo or typing in promo code VOLH50 when booking at Volaris.com. Some excellent deals can be found to Mexico using this promo code.

Travel is valid through Oct. 31, 2015 using the promo code, however, the lowest fares will be found between late August and October on most routes. The promo code expires at 11:59 p.m. central time, TODAY, Apr. 7, 2015.

Sample fares include:

Chicago to Mexico City $234 round-trip, nonstop

Los Angeles to Guadalajara $224 round-trip, nonstop

Fort Lauderdale to Mexico City $224 round-trip, nonstop

Portland to Cancun $363 round-trip

Oakland to Cancun $363 round-trip

New York to Guadalajara $217 round-trip, nonstop

Orlando to Guadalajara $224 round-trip, nonstop

Ontario to Guadalajara $220 round-trip, nonstop

New York to Mexico City $321 round-trip

Orlando to Mexico City $229 round-trip, nonstop

Denver to Mexico City $241 round-trip, nonstop

Las Vegas to Mexico City $226 round-trip, nonstop

San Diego to Mexico City $224 round-trip, nonstop

Teotihuacan image via iStockphoto.