Yes — there are several online tools and apps that can monitor award-seat availability and notify you when seats open up. Options range from free/basic alerting engines to paid services with broad airline coverage, seat maps, and advanced filters. Below are the commonly used tools, what they do, and the main tradeoffs.

Quick list (what they do)

• ExpertFlyer — veteran service that offers Flight Alerts and Seat Alerts for award/upgrades and specific seats; best for detailed seat maps and per-flight monitoring (paid tiers). (expertflyer.com)
• Seats.aero — fast award-search engine with free alerts (email) and a low-cost Pro tier that adds date ranges, SMS/push, advanced filters and longer search windows. Good multi-program coverage and easy alerting. (seats.aero.)
• SeatSpy — focuses on reward availability (notably British Airways and several other carriers); provides alerts (Telegram/WhatsApp/SMS on paid plans). Good for certain carriers/routes. (seatspy.com)
• point.me — an award-search engine (formerly Juicy Miles/other brands) that compares many programs and offers paid search/alert features and concierge help for complex redemptions. (point.me)
• AwardFares (and similar newer services) — newer apps that provide live alerts and “flex” region-based/AI alerts for opportunistic award finds (paid). (awardfares.com)
• AwardWallet (Balance Watch) — not an award-seat finder, but useful to monitor points transfers/postings so you know when your miles land and you can book quickly. (awardwallet.com)

Important caveats

• Coverage and reliability vary by airline and program. Some tools can check a long list of carriers; others focus on specific airlines or alliances. Always check a tool’s supported airlines before relying on it. (seats.aero)
• Airline data access can change. Tools sometimes lose coverage of particular carriers (users have reported outages/removed airlines in the past), so alerts can stop working for some programs unexpectedly. (If you depend on a particular airline’s coverage, verify it on the tool’s site before paying.) (awardwallet.com)
• Most power features (unlimited alerts, SMS, advanced filters, long search windows) are behind paid tiers; free tiers often let you set a few basic alerts. (nerdwallet.com)

How to use alerts effectively (practical tips)

• Create alerts for each leg (one-way) and for each program you might book through — different programs often show different inventory.
• If you’re flexible, set broad/region alerts (some services support “any date” or region-based monitoring). Tools like AwardFares and Seats.aero support broader/flex alerts. (awardfares.com)
• When an alert fires, act fast: call the airline or book online immediately. For complicated itineraries, call the mileage program’s booking desk.
• Monitor your points/transfers with a balance-watch tool (AwardWallet or similar) so you know when transfers complete and you can grab a seat before it disappears. (awardwallet.com)
• Combine tools: use a broad searcher (point.me / Seats.aero) to find options and a per-flight alert tool (ExpertFlyer / SeatSpy) to watch a specific flight.

If you want, I can:

• Suggest 2–3 tools tailored to a specific airline or route you care about (and show current coverage/pricing), or
• Walk you through setting an alert (example steps) on one of the services above.

Which would you like me to do next?