| IATA | UA |
| ICAO | UAL |
| Call sign | UNITED |
| Founded | April 6, 1926 |
| Country | United States |
| Hubs | Chicago (ORD) , Denver(DEN) , Guam (GUM) , Houston (IAH) , Los Angeles (LAX) , New York(EWR) , San Francisco (SFO) , Washington (IAD) |
| Frequent-flyer program | MileagePlus |
| Fleet Size | 1055 |
| Website | https://www.united.com |
| Flight Number | Departure Airport | Arrival Airport | Departure Time | Arrival Time | Duration | Connection | Check Price |
|---|---|---|---|---|---|---|---|
| UA001 |  San Francisco (SFO) Terminal I |  Singapore (SIN) Terminal 2 | 22:40 | 06:15(+1) | 16h35m | Nonstop | SFO-SIN |
| UA002 | Singapore (SIN) Terminal 2 | San Francisco (SFO) Terminal I | 08:45 | 09:15 | 15h30m | Nonstop | SIN-SFO |
| UA003 | Chicago (ORD) Terminal 1 |  Zurich (ZRH) | 15:45 | 07:45(+1) | 9h | Nonstop | ORD-ZRH |
| UA004 |  London (LHR) Terminal 2 | Houston (IAH) Terminal E | 13:40 | 17:55 | 10h15m | Nonstop | LHR-IAH |
| UA005 | Houston (IAH) Terminal E | London (LHR) Terminal 2 | 20:15 | 11:35(+1) | 9h20m | Nonstop | IAH-LHR |
| UA006 |  Ulaanbaatar (UBN) | Houston (IAH) Terminal E | 09:55 | 14:55 | 18h | 1stop Via Tokyo(NRT) | UBN-IAH |
| UA007 | Houston (IAH) Terminal E | Ulaanbaatar (UBN) | 10:05 | 20:55 | 21h50m | 1stop Via Tokyo(NRT) | IAH-UBN |
| UA008-011 | Flight Inactive | ||||||
| UA012 | Zurich (ZRH) | Chicago (ORD) Terminal 5 | 09:50 | 12:55 | 10h05m | Nonstop | ZRH-ORD |