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UA 308 Chicago to Ontario Flight Status

United Airlines Flight UA308 from Chicago O'Hare International Airport ORD to Ontario International Airport ONT is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on October 24th, 2025.
Check the table below for UA308's most recent flight history:

UA 308 Flight Status & Schedule

Date Departure Arrival Status
Oct 24 20:37 22:17
Landed
Track >
Oct 23 20:16 21:55
Landed
Track >
Oct 22 20:25 22:28
Landed
Track >
Oct 21 20:30 22:27
Landed
Track >
Oct 20 20:36 22:23
Landed
Track >

United Airlines UA 308 Chicago to Ontario Flight Information

United Airlines Flight UA308 connects Chicago, United States to Ontario, United States, taking off from Chicago O'Hare International Airport ORD and landing at Ontario International Airport ONT.

How long is the UA308 flight from Chicago to Ontario?

The average flight time from Chicago to Ontario is 3 hours and 51 minutes. The flight distance is 2730 km / 1696 miles and the average flight speed is 707 km/h / 439 mph.

What is the On-Time Performance (OTP) of United Airlines Flight UA308 Chicago to Ontario?

The Airportia On-Time Performance Rating for United Airlines Flight UA308 is 5/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight UA308 arriving at?

Flight UA308 arrives at Ontario International Airport (ONT) Terminal 2.

When was the latest UA308 flight?

The latest flight took off on Saturday, October 25th, 2025 with the flight status being Landed on 22:17.

How else can the flight UA308 be referenced as?

This United Airlines flight can also be referenced as UAL308, UA0308, UA 308, UAL 308.

How often is flight UA308 delayed?

On average, 20% of all UA308 flights are delayed. The average delay is 13 minutes.

Can I get compensation for my delayed or cancelled UA308 flight or baggage issues?

If your UA308 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.

See our UA308 Flight Tracker above for more details.

UA308 and Chicago ORD to Ontario ONT Flights

Other flights departing from Chicago ORD: AS1209, UA2148, UA1564, UA1576

Other flights arriving at Ontario ONT: WN2093, WN1690, WN6128, WN2654

All flights connecting Chicago ORD to Ontario ONT.

UA308 United Airlines Flight: Chicago to Ontario Route Map

UA308 United Airlines Flight Map: Chicago to Ontario
Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.