Does UA521 have Starlink Wi-Fi?

About 17% Starlink odds, weighted to recent UA521 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 UA521 departures

  • IAH → BOS · Tue, Oct 20, 6:35 PM CDT
    N37561 · 737 MAX 9
    Viasat

UA521 Starlink history

Based on 86 recent flights; Starlink found in 0 of 16 Wi-Fi checks since Jan 2, 2026.

Aircraft seen on UA521: Boeing 737 MAX 9, Boeing 737-700, Boeing 737 MAX 8, Airbus A320.

Routes UA521 flies

Other IAH → BOS flights

UA1226UA1957UA1977UA2393UA2296UA2161UA1684UA1207

Other ways to check

  • Know your tail number? Search it on the homepage.
  • Shopping on Google Flights? The free Chrome extension marks United flights that have Starlink.
  • See every United Airlines aircraft on the fleet page.

Questions

How do I check if UA521 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 UA521 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.