Buy Southwest Rapid Rewards points through May 16 and receive up to a 50 percent bonus. Purchase 5,000–9,000 points for a 30 percent bonus. Purchase 10,000–14,000 points for a 40 percent bonus. Purchase 15,000 or more points for a 50 percent bonus.

Hilton Honors members receive double points on every stay, starting with the second, plus bonuses for stay milestones, May 6–Sept. 8. Bonuses include an additional 10,000 points on your 10th stay; 15,000 points on your 15th stay; and 20,000 points on your 20th stay. Registration for the

Earn up to 20,000 bonus Qatar Airways Qmiles when you fly the airline’s new route between Doha (DOH) and Davao (DVO). Book a ticket in premium class for travel before Sept. 15, and receive 10,000 bonus Qmiles each way. Book a ticket in economy class and

Redeem miles for a Singapore Airlines flight through April 30 for travel in May and receive a 30 percent redemption discount. The offer is only available for economy, premium-economy and business-class flights. The promotion is not redeemable alongside any other. See the full list of routes included

Receive double World of Hyatt points when you stay at select M Life Rewards properties in Las Vegas. Register for the offer and then book and stay before July 31. Earn 20 percent more points when you stay at the Excalibur, Luxor or New York-New York

Earn triple Miles & Go miles from TAP Air Portugal when you stay at Le Club AccorHotels properties. The offer is valid for stays through June 15. Offer participants enjoy the chance to win a complimentary two-night stay at Sofitel Lisboa.

Buy Alaska Airlines Mileage Plan miles and receive a 50 percent bonus when you purchase 40,000 or more miles. Buy 10,000–19,000 miles and receive a 20 percent bonus. Buy 20,000–39,000 miles and receive a 35 percent bonus. Buy 40,000–60,000 miles and receive a 50 percent bonus. The

Take advantage of reduced Hertz weekend rates, starting at $13 per day, through May 18. When booking, use promotional code RQ# WKEN1. The offer is valid at neighborhood Hertz locations only and a two-day minimum rental is required. You must pick up the rental Friday or

Join Aeroplan now and receive a new welcome bonus. New members receive 1,000 bonus miles after their first transaction. The bonus is available for a limited time and the transaction must take place within the first 60 days after signing up. Allow six to eight weeks

Earn 1,500 bonus miles from Avianca when you book a hotel with the Avianca LifeMiles Hotels portal. The bonus is only open to first-time users. Book your stay at hotels around the world before April 30 for travel through the end of the year. Bonus miles

Fly Qantas between multiple cities in Australia and multiple destinations in the United States through Dec. 6 and earn double Alaska Airlines Mileage Plan miles. Register for the offer at the link above and book your flight before April 30 to qualify. Valid routes include Los Angeles

Earn 4,000 bonus Marriott Bonvoy points when you stay at Miami Airport Marriott for two or more nights. The offer is available for stays through May 10. Reservations through the link above are required.

Save up to 15 percent on Etihad Airways flights when you travel before May 20 in either economy or business class. The offer is available on flights between select North American cities and more than 40 destinations in the Middle East, Africa, Asia and Australia. Book