| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Dec 17 | ORD | BUF | 14:35 | 16:46 |
Landed
|
Track > |
| Dec 16 | ORD | BUF | 14:38 | 16:46 |
Landed
|
Track > |
| Dec 15 | ORD | BUF | 14:23 | 16:34 |
Landed
|
Track > |
| Dec 14 | ORD | BUF | 15:14 | 17:29 |
Landed Late
|
Track > |
| Dec 13 | ORD | BUF | 14:43 | 16:46 |
Landed
|
Track > |
| Dec 12 | ORD | BUF | 14:20 | 16:32 |
Landed
|
Track > |
| Dec 11 | ORD | BUF | 14:41 | 16:52 |
Landed
|
Track > |
| Dec 10 | ORD | BUF | 15:18 | 17:30 |
Landed Late
|
Track > |
| Dec 09 | ORD | BUF | 14:33 | 16:46 |
Landed
|
Track > |
| Dec 08 | ORD | BUF | 14:42 | 16:55 |
Landed
|
Track > |
United Airlines Flight UA5540 connects Chicago, United States to Buffalo, United States, taking off from Chicago O'Hare International Airport ORD and landing at Buffalo Niagara International Airport BUF.
How long is the UA5540 flight from Chicago to Buffalo?
The average flight time from Chicago to Buffalo is 1 hour and 10 minutes. The flight distance is 760 km / 472 miles and the average flight speed is 644 km/h / 400 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA5540 Chicago to Buffalo?
The Airportia On-Time Performance Rating for United Airlines Flight UA5540 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA5540 arriving at?
Flight UA5540 arrives at Buffalo Niagara International Airport (BUF) Terminal 3.
When was the latest UA5540 flight?
The latest flight took off on Wednesday, December 17th, 2025 with the flight status being Landed on 16:46.
How else can the flight UA5540 be referenced as?
This United Airlines flight can also be referenced as UAL5540, UA 5540, UAL 5540.
How often is flight UA5540 delayed?
On average, 30% of all UA5540 flights are delayed. The average delay is 25 minutes.
Can I get compensation for my delayed or cancelled UA5540 flight or baggage issues?
If your UA5540 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 UA5540 Flight Tracker above for more details.
Flight UA5540 is code-shared by 2 airlines using the flight numbers AC3967, NZ2113
Other flights departing from Chicago ORD: UA3499, AA3460, UA2223, UA4568
Other flights arriving at Buffalo BUF: UA4496, AA3860, DL4149, DL5654
All flights connecting Chicago ORD to Buffalo BUF.