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UA552 Flight Information & Schedule

United Airlines · San Francisco International Airport (SFO) to Ontario International Airport (ONT)

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UA552 San Francisco International Airport to Ontario International Airport nonstop flight: schedule, airports, aircraft and travel guide.

UA552 Flight Overview

UA552 is operated by United Airlines and connects San Francisco International Airport (SFO) and Ontario International Airport (ONT). Scheduled departure: 2026-10-29 21:20 (UTC-07:00); scheduled arrival: 2026-10-29 22:48 (UTC-07:00).

AirlineUnited Airlines
Flight numberUA552
RouteSFO to ONT
Scheduled duration1 hr 28 min

San Francisco to Ontario Route Information

UA552 is a nonstop flight from San Francisco International Airport (SFO) to Ontario International Airport (ONT). Use the information below to plan your journey.

Route distanceApprox. 585 km
Scheduled flight time1 hr 28 min
Time difference0 min
Flight typenonstop
01

Departure

Scheduled departure: 2026-10-29 21:20 (UTC-07:00). Confirm airport transport and terminal opening hours in advance.

02

Arrival

Scheduled arrival: 2026-10-29 22:48 (UTC-07:00). Arrange pickup, hotel and onward transport for the arrival date.

03

Time zones

Departure: San Francisco (UTC-07:00); arrival: Ontario (UTC-07:00).

UA552 On-time Performance & History

Methodology

90%Arrival on-time rate
Sample flights90 (flights)
Average departure delay25 min
Average arrival early9 min
Cancllation rate0%
Longest delay-
Early arrivals73%

Historical statistics are for reference only and do not predict future flight performance.

Aircraft, Cabin & Services

Based on currently published aircraft and cabin information; the operating aircraft may change.

Published aircraft type

Boeing 737

Economy 30 in; Business 38 in

Seat layout166

Business 16 · Economy 150

Business Class2-2

38 in

Seat configuration depends on the operating aircraft

Economy Class3-3

30 in

MealsFree snacks on flights over 300 miles; food and alcohol for purchase in economy

Inflight entertainmentSeatback entertainment system

Inflight Wi-FiWi-Fi (additional charge)

Availability and fees depend on the flight

PowerBusiness: Power outlets; Economy: USB port and power outlet

BassinetAvailable

Accessibility-

UA552 Airports

Terminals follow the published schedule; check official airline channels for same-day gates and operations.

San Francisco International Airport Departure & Ontario International Airport Arrival Guide

Departure date: 2026-10-29. Terminal and arrival information helps plan your journey.

SFO

Departing from San Francisco International Airport

UA552 is scheduled to depart from T1. Allow time for international check-in, baggage drop, security and immigration.

ONT

Arriving at Ontario International Airport

Scheduled arrival is at T2. After immigration, take the MRT, taxi, ride-hailing service or airport bus to the city.

 

Planning your arrival

Scheduled arrival: 2026-10-29 22:48. Use the arrival date when booking hotels and pickup services.

Flight Changes, Cancellations & Missed Flights

If the schedule or aircraft changes, follow the booking channel and operating carrier rules.

01

Schedule changes

After an airline or booking-platform notice, confirm the new date, terminal and connecting transport.

02

Cancellation and changes

Refund, rebooking and involuntary-change rules depend on the booking channel, fare conditions and airline notice.

03

Missed flight

If you may not reach the airport on time, contact the booking channel or airline quickly to protect later sectors.

Check-in, Baggage & Entry Tips

International check-in deadlines, baggage allowance and entry requirements may vary by fare and traveller.

01

Arrive early for check-in

Arrive at least 3 hours before departure. Counter opening times and online check-in rules follow San Francisco International Airport guidance.

02

Check baggage allowance

Checked and carry-on baggage allowances depend on cabin, fare rules and membership tier. See the baggage terms in your booking.

03

Prepare entry documents

Before departure, check passport validity, visa or visa-free eligibility, andOntario International Airport’ latest arrival declaration requirements.

What should I check before flying UA552?

01

Check the departure date

For an overnight flight, check the departure date on your ticket and plan airport transport in advance.

02

Confirm the operating carrier

Follow the airline rules shown in your booking for check-in and checked baggage.

03

Check boarding information

Gates and operating times may change; follow airline notices and airport displays.

Popular route recommendations

UA552 Frequently Asked Questions

Which airline operates this flight?

UA552 is operated by United Airlines.

Where does it depart and arrive?

San Francisco International Airport (SFO) → Ontario International Airport (ONT).

What are the departure and arrival times?

Scheduled departure 21:20, arrival 22:48 · 1 hour 28 minutes.

Which terminal is used for check-in?

Departure terminal T1, arrival terminal T2. Check-in, gate and baggage belt are announced on the day.

Are meals and inflight entertainment available?

Meals: Free snacks on flights over 300 miles; food and alcohol for purchase in economy. Inflight entertainment: Seatback entertainment system.

Explore This Route

Departure airportFlights from San Francisco International Airport
Arrival airportOntario International Airport information
Operating airlineUnited Airlines information