How do I check if UA1603 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 UA1603 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.

Does UA1603 have Starlink Wi-Fi?

About 12% Starlink odds, weighted to recent UA1603 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 UA1603 departures

LAS → SFO · Mon, Oct 19, 5:55 PM PDT
N17574 · 737 MAX 9
Starlink

UA1603 Starlink history

Based on 126 recent flights; Starlink found in 1 of 31 Wi-Fi checks since Jan 2, 2026 (last N87527, Jul 20, 2026).

Aircraft seen on UA1603: Boeing 737 MAX 9, Boeing 737 MAX 8, Boeing 737-800, Boeing 737-900.

Routes UA1603 flies

LAS → SFO · 1h 48m
Seen 107 times · last seen Oct 19, 2026
Plan this route
SFO → ATL · 4h 54m
Seen 72 times · last seen Sep 21, 2026
Plan this route

Other LAS → SFO flights

UA1799 UA1267 UA2356 UA643 UA574 UA1160 UA1125 UA2615

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 UA1603 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 UA1603 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.