[09/22/2021 @ 12:23 PM CT] Still available. Date range has increased to include March. Was December. Puerto Vallarta prices have increased by about +$20.
American Airlines has round-trip flights from Dallas (DFW) to Cancun, Puerto Vallarta, San Jose del Cabo (CUN, PVR, SJD) for $168-$200, NONSTOP. Flights September to December. Weekends available.
Spirit flights to Cancun for about $158, but those aren’t worth it due to the extra fees for bags.