Does UA721 have Starlink Wi-Fi?

About 45% Starlink odds, weighted to recent UA721 flights. A firm answer comes about 2 days before departure, once the aircraft is assigned.

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

Next UA721 departures

  • BOS → IAD · Mon, Oct 19, 2:15 PM EDT
    N38479 · 737-900
    Starlink

UA721 Starlink history

Based on 77 recent flights; Starlink found in 5 of 9 Wi-Fi checks since Mar 15, 2026 (last N39475, Oct 18, 2026).

Aircraft seen on UA721: Boeing 737-900ER, Boeing 737.

Routes UA721 flies

  • BOS → IAD · 1h 41m
    Seen 641 times · last seen Oct 19, 2026
    Plan this route

Other BOS → IAD flights

UA2136UA2098UA3409UA3543UA3413UA1734UA3781UA3757

Other ways to check

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  • See every United Airlines aircraft on the fleet page.

Questions

How do I check if UA721 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 UA721 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.