Southwest Airlines is having another flash sale with cheap domestic and international flights (including to tropical destinations like the Bahamas and Turks and Caicos).

The sale — which ends at midnight on July 27 — has fares as low as $49 one-way, for travel between August 22 and December 13.

Return flights from the Cayman Islands and Belize start at $135 and $145, for round-trip fares as low as $184 and $194, respectively.

Flights from Oakland to Ontario, Canada, start at $49; flights from Atlanta to Cancún start at $170; and flights from Los Angeles to Puerto Vallarta, Mexico, start at $145.

Southwest is also the only major carrier still offering free checked bags, so you can really save on your next getaway.

See the full list of sale fares.