United UA421 Flight Status Tracker
UA421 is a domestic flight operated by United. UA421 is departing from Boston (BOS), United States and arriving at Houston (IAH), United States. The flight distance is about 2569.24 km or 1596.45 miles and flight time is 4 hours 0 minutes. Get the latest status of UA421 / UAL421 here.
Update on April 30, 2026, 4:04 a.m.
Lastest Status
Scheduled On time
| BOS | IAH |
Distance: 2569.24 km / 1596.45 miles or 1387.28 nautical miles.
Departure Boston Logan International Airport
Estimate Departure: 11:00
Scheduled Departure: 11:00
Departure Terminal : N/A Gate None
Arrival Houston George Bush Intercontinental Airport
Estimate Arrival: 14:24
Scheduled Arrival: 14:24
Arrival Terminal : B Gate None
Flight UA421 detail information
| Type | Domestic Flight |
| Route | Departure Boston (BOS), United States and arriving at Houston (IAH), United States |
| Airlines | United (UA) |
| Aircraft | Boeing 737 Max 9 |
| Flight Duration | 4 hours 0 minutes |
| Flight Distance | 2569.24 km /1596.45 miles |
| Operating Days |
Find more flight status
UA421 Airports
| Departures |
|---|
| Airport: Boston Logan International Airport, United States |
| ICAO Code: BOS |
| BOS Current time: 01:02 30-Apr-2026 |
| Arrivals |
| Airport: Houston George Bush Intercontinental Airport, United States |
| ICAO Code: IAH |
| IAH Current time: 00:02 30-Apr-2026 |