Flying Blue is the combined points program of KLM and Air France. At the start of each month they discount select routes. This month, Houston long-haul economy flights to Amsterdam and Paris are about are -11,250 cheaper due to this discount. It’s a good idea to check the promo landing page at the start of each month to see if anything worthwhile pops up.
This time KLM has round-trip flights from Houston (IAH) to Amsterdam or Paris (AMS, CDG) for 30,000 + $270-$279 tax/fees, NONSTOP or with a connection. Fare allows for carry-on bag and seat selection. Flights between August and December. Promo awards are refundable (with a €50 Euro fee) and changeable (with a €50 Euro fee + fare price difference).