| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Feb 08 | BUF | ORD | 17:46 | 18:15 |
Landed
|
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| Feb 06 | BUF | ORD | 17:42 | 18:09 |
Landed
|
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| Feb 05 | BUF | ORD | 20:02 | 20:27 |
Delayed
|
Track > |
| Feb 03 | BUF | ORD | 17:47 | 18:16 |
Landed
|
Track > |
| Feb 02 | BUF | ORD | 18:54 | 19:13 |
Landed Late
|
Track > |
United Airlines Flight UA4573 connects Buffalo, United States to Chicago, United States, taking off from Buffalo Niagara International Airport BUF and landing at Chicago O'Hare International Airport ORD.
How long is the UA4573 flight from Buffalo to Chicago?
The average flight time from Buffalo to Chicago is 1 hour and 25 minutes. The flight distance is 760 km / 472 miles and the average flight speed is 532 km/h / 331 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA4573 Buffalo to Chicago?
The Airportia On-Time Performance Rating for United Airlines Flight UA4573 is 4.5/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA4573 arriving at?
Flight UA4573 arrives at Chicago O'Hare International Airport (ORD) Terminal 2.
When was the latest UA4573 flight?
The latest flight took off on Monday, February 9th, 2026 with the flight status being Landed on 18:15.
How else can the flight UA4573 be referenced as?
This United Airlines flight can also be referenced as UAL4573, UA 4573, UAL 4573.
How often is flight UA4573 delayed?
On average, 40% of all UA4573 flights are delayed. The average delay is 80 minutes.
Can I get compensation for my delayed or cancelled UA4573 flight or baggage issues?
If your UA4573 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 UA4573 Flight Tracker above for more details.
Flight UA4573 is code-shared by 2 airlines using the flight numbers AC5352, NZ2114
Other flights departing from Buffalo BUF: AA4183, DL5380, UA4496, AA4674
Other flights arriving at Chicago ORD: AA854, UA2026, UA5785, AA4017
All flights connecting Buffalo BUF to Chicago ORD.