Beginning of main content
Trip Type
Flight 1
Flight 2
Flight 3
Flight 4
Flight 5
Due to coronavirus (COVID-19) travel advisories, some destinations may be unavailable for certain dates. Find out more.

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

More United Flight For This Route

Carrier Flight Depart OGG Arrive SFO Fri
1/29
Sat
1/30
Sun
1/31
Mon
2/1
Tue
2/2
Wed
2/3
Thu
2/4
Stops
UA 1580 10:05 am 05:00 pm Check fare Check fare Check fare Check fare Check fare Check fare Check fare 0 stop(s)
UA 556 01:35 pm 08:30 pm Check fare Check fare Check fare Check fare Check fare Check fare Check fare 0 stop(s)
UA 1557 11:30 pm 06:25 am Check fare Check fare Check fare Check fare Check fare Check fare Check fare 0 stop(s)

FAQs about UA556

What route does flight number UA556 take?

UA556 is used on a range of routes. Mostly, UA556 flies straight from San Francisco, CA (SFO-San Francisco Intl.) to Chicago, IL (ORD-O'Hare Intl.). If you've booked a seat on this route, you'll be airborne for 4 hours and 24 minutes.

What terminal does UA556 fly out of?

UA556 flights from San Francisco, CA (SFO-San Francisco Intl.) typically leave from Terminal 3. This flight number runs on a number of different routes, but the most frequented is San Francisco, CA (SFO-San Francisco Intl.) to Chicago, IL (ORD-O'Hare Intl.).

What kind of plane is on flight number UA556?

You'll probably be cruising aboard the Boeing 737-800 if you're on flight number UA556 from San Francisco, CA (SFO-San Francisco Intl.) to Chicago, IL (ORD-O'Hare Intl.). This is the most commonly used type of aircraft on this popular route.