Does UA1721 have Starlink Wi-Fi?

Under 1% Starlink odds, weighted to recent UA1721 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.

How the check works · Is Starlink Wi-Fi free?

UA1721 Starlink history

Based on 115 recent flights; Starlink found in 0 of 2 Wi-Fi checks since Feb 28, 2026.

Aircraft seen on UA1721: Boeing 757-300.

Routes UA1721 flies

Other SFO → KOA flights

UA694

Other ways to check

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Questions

How do I check if UA1721 has Starlink?
Pick your travel date above. United Airlines assigns the aircraft about 2 days before departure, and the answer then comes from that aircraft. Before that, you get Starlink odds from recent UA1721 flights, weighted to the latest.
How accurate is this?
We check each aircraft's Wi-Fi on united.com and match aircraft to flights using flight schedule data. Aircraft can be swapped before departure, so check again the day before you fly.