Book by July 27, 2017 on Southwest for these great international fares.

Tickets are nonrefundable. Seats, travel days, and markets are limited, and some blackout dates apply. Travel dates may vary for cities outside the contiguous U.S. And, also, points bookings do not include government fees that start from $5.60 per one-way flight, said the airline on their site.

See below for the complete terms and conditions.

One stipulation of this sale is that international travel is valid only on Tuesdays and Wednesdays.

Here is an example of the low fares available to and from Costa Rica during this time-limited sale:

From San Jose, Costa Rica

• To Ft. Lauderdale, FL starting at $128 or 3,888 points one-way
• To Houston (Hobby), TX starting at $172 or 7,056 points one-way

From Liberia, Costa Rica

• To Houston (Hobby), TX starting at $195 or 8,568 points one-way

From Houston (Hobby), TX

• To Liberia, Costa Rica starting at $165 or 8,568 points one-way
• To San Jose, Costa Rica starting at $143 or 7,056 points one-way

From Ft. Lauderdale, FL

• To San Jose, Costa Rica starting at $99 or 3,888 points one-way

Terms & Conditions

• Purchase from July 11 through July 27, 2017, 11:59 p.m. in the respective time zone of the originating city.
• Domestic travel valid August 22 through December 13, 2017. Travel to/from San Juan, Puerto Rico valid September 6 through November 2, 2017.International travel valid August 22 through December 13, 2017.
• Domestic and San Juan, Puerto Rico travel blacked out September 1, September 4, November 21-22 & November 25-27, 2017. Sale fares from international destinations blacked out November 28, 2017.
• Domestic travel is not valid on Fridays and Sundays. Travel to Florida and Nevada and from Florida to Nevada is valid only on Sundays through Wednesdays. Travel from Florida and Nevada and from Nevada to Florida is valid only on Tuesdays through Fridays. Travel to/from San Juan, Puerto Rico is valid Monday – Thursday. International travel is valid only on Tuesdays and Wednesdays.
• Fares valid only on nonstop service.
• Displayed prices include all U.S. and international government taxes and fees.
• Points bookings do not include taxes, fees, and other government/airport charges of at least $5.60 per one-way flight.
• Seats and days are limited. Fares may vary by destination, flight, and day of week and won’t be available on some flights that operate during very busy travel times and holiday periods.
• Travel is available for one-way Wanna Get Away® fares.
• Fares may be combined with other Southwest Airlines® combinable fares. If combining with other fares, the most restrictive fare’s rules apply.
• Sale fares may be available on other days of week, but that’s not guaranteed.
• Fares are nonrefundable but may be applied toward future travel on Southwest Airlines®, as long as reservations are canceled at least ten minutes prior to the scheduled departure. Failure to cancel prior to departure will result in forfeiture of remaining funds on the reservation.
• Any change in itinerary may result in an increase in fare. Standby travel may require an upgrade to the Anytime fare depending on Rapid Rewards® tier status.
• Fares are subject to change until ticketed.
• Offer applies only to published, scheduled service.

The airline contact information is as follows:

Southwest Airlines
2702 Love Field Drive
Dallas, TX 75235
1-800-I-FLY-SWA (1-800-435-9792)