United Flight UA858 Deals & Information (2025/2026)

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United Flight 858 Route Deals From $816

The cheapest prices found with in the last 7 days for return flights were and $816 for one-way flights to San Francisco Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

What route does flight number UA858 take?
UA858 is used on multiple routes, but the most common is between ICN and San Francisco Intl. Airport (SFO). If your flight is direct, you'll stroll through arrivals in approximately 10 hours and 45 minutes. Multi-stop flights can also operate under this number, as can flights on other routes.
What terminal does UA858 fly out of?
You'll most likely board from Terminal 1 if you're starting your journey at Incheon Intl. Airport (ICN). Flight number UA858 serves several routes, but the direct flight between ICN and San Francisco Airport is the most frequently traveled one.
What kind of plane is on flight number UA858?
It's possible you'll be on board the Boeing 777-300ER if you're traveling from Seoul--Incheon Intl. Airport to San Francisco Airport, the most popular route for flight number UA858.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA858 flight with Travelocity, please visit our Customer Service Portal.