Here are five-star Singapore hotels that commonly publish last‑minute or limited-time offers, plus the best places and tactics to find those deals right now (current date: September 14, 2025).

Top 5‑star hotels in Singapore with regularly posted offers

• Marina Bay Sands — official “Room / Packages” and promotional pages list weekday, stay‑long and seasonal packages (check their Offers/Rooms pages). (marinabaysands.com)
• Raffles Hotel Singapore — runs seasonal and package offers (romance, longer stays, etc.). (raffles.com)
• Shangri‑La (Orchard / Tanglin / JEN brands) — multiple limited‑time and “flash” offers shown on the hotel group offers pages. (shangri-la.com)
• Four Seasons Singapore — posts promotional packages (stay‑long, advance purchase, breakfast packages). (fourseasons.com)
• The Fullerton Bay Hotel / Fullerton collection — advance purchase, “stay more save more” and other limited offers. (fullertonhotels.com)
• The Ritz‑Carlton, Millenia Singapore — periodic promos and Marriott-offer pages show package/discount options. (marriott.com)
• Capella Singapore (Sentosa) — villa and spa packages, stay‑long promotions and third‑party exclusive offers. (staging-chrdo.capellahotels.com)
• Mandarin Oriental / The St. Regis and other luxury brands — regularly publish member, advance‑purchase and package deals on their sites. (mandarinoriental.com.cn)

Where to look for genuine last‑minute deals

• Hotel brand websites / “Offers” pages — best for guaranteed benefits (breakfast, credits, upgrades) and member rates. Example: Marina Bay Sands, Shangri‑La, Four Seasons have live offers pages. (marinabaysands.com)
• Online travel agencies with “last‑minute” sections (Expedia, Hotels.com, Agoda, Booking.com) — aggregate discounted inventory and app‑only prices; Expedia specifically highlights a Last‑Minute page. (expedia.com.sg)
• Last‑minute specialist apps / features — HotelTonight (now integrated with larger platforms/Airbnb strategies) historically focuses on same‑day / near‑term deals for hotels. (techcrunch.com)
• Luxury/curated deal sites and travel consortia (Mr & Mrs Smith, Virtuoso, Luxury Escapes) — sometimes have negotiated short‑term packages and extras for premium hotels. (Examples seen for Capella and others via curated partners). (mrandmrssmith.com)

Quick tips to score the best last‑minute rates

• Be flexible on nights (midweek often cheaper for business‑oriented luxury hotels). (expedia.com)
• Check both the hotel’s own “Offers” page and OTAs/apps — hotels sometimes match/beat OTA prices but OTAs may show immediate unsold‑inventory discounts. (marinabaysands.com)
• Use apps that show “last‑minute” or “Daily Drop” style deals and enable push notifications (these catch time‑limited offers). (cntraveler.com)
• Join hotel loyalty programs / sign up for the hotel’s mailing list — members often get exclusive short‑term rates or member‑only codes. (shangri-la.com)
• Call the hotel directly late in the day — sometimes the reservations desk can offer unpublished rates for filling rooms same‑day.

If you want, I can check live last‑minute rates and available packages for any of these hotels for a specific arrival date and length of stay — tell me the hotel(s) and exact dates and I’ll search current offers and prices.