UA 6400 St. Thomas to San Juan Flight Status

United Airlines Flight UA6400 from St. Thomas Cyril E. King Airport STT to San Juan Luis Munoz Marin International Airport SJU is not scheduled for today June 5th, 2026.
The last time the flight was scheduled was on May 26th, 2026.
Check the table below for UA6400's most recent flight history:

UA 6400 Flight Status & Schedule

Date Departure Arrival Status
May 26 16:55 17:47
Diverted
Track >

United Airlines UA 6400 St. Thomas to San Juan Flight Information

United Airlines Flight UA6400 connects St. Thomas, U.S. Virgin Islands to San Juan, Puerto Rico, taking off from St. Thomas Cyril E. King Airport STT and landing at San Juan Luis Munoz Marin International Airport SJU.

How long is the UA6400 flight from St. Thomas to San Juan?

The average flight time from St. Thomas to San Juan is 52 minutes. The flight distance is 109 km / 68 miles and the average flight speed is 126 km/h / 78 mph.

What is the On-Time Performance (OTP) of United Airlines Flight UA6400 St. Thomas to San Juan?

The Airportia On-Time Performance Rating for United Airlines Flight UA6400 is 5/5 stars. This metric is calculated using data from the past 10 flights.

When was the latest UA6400 flight?

The latest flight took off on Tuesday, May 26th, 2026 with the flight status being Diverted on 17:47.

How else can the flight UA6400 be referenced as?

This United Airlines flight can also be referenced as UAL6400, UA 6400, UAL 6400.

How often is flight UA6400 delayed?

On average, 100% of all UA6400 flights are delayed. The average delay is 2 minutes.

See our UA6400 Flight Tracker above for more details.

UA6400 and St. Thomas STT to San Juan SJU Flights

Other flights departing from St. Thomas STT: 9K3951, AA2738, UA1445, 9K3951

Other flights arriving at San Juan SJU: B6803, TJ155, C27109, 9K3951

All flights connecting St. Thomas STT to San Juan SJU.

UA6400 United Airlines Flight: St. Thomas to San Juan Route Map

UA6400 United Airlines Flight Map: St. Thomas to San Juan
Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.