| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Apr 29 | BUF | ORD | 10:51 | 11:13 |
Landed
|
Track > |
| Apr 23 | BUF | ORD | 11:02 | 11:19 |
Landed
|
Track > |
| Apr 22 | BUF | ORD | 11:10 | 11:31 |
Landed
|
Track > |
| Apr 16 | BUF | ORD | 10:56 | 11:19 |
Landed
|
Track > |
| Apr 15 | BUF | ORD | 12:04 | 12:25 |
Landed Late
|
Track > |
| Apr 09 | BUF | ORD | 11:01 | 11:24 |
Landed
|
Track > |
| Apr 08 | BUF | ORD | 11:06 | 11:30 |
Landed
|
Track > |
United Airlines Flight UA3640 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 UA3640 flight from Buffalo to Chicago?
The average flight time from Buffalo to Chicago is 1 hour and 21 minutes. The flight distance is 760 km / 472 miles and the average flight speed is 559 km/h / 347 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA3640 Buffalo to Chicago?
The Airportia On-Time Performance Rating for United Airlines Flight UA3640 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA3640 arriving at?
Flight UA3640 arrives at Chicago O'Hare International Airport (ORD) Terminal 1.
When was the latest UA3640 flight?
The latest flight took off on Wednesday, April 29th, 2026 with the flight status being Landed on 11:13.
How else can the flight UA3640 be referenced as?
This United Airlines flight can also be referenced as UAL3640, UA 3640, UAL 3640.
How often is flight UA3640 delayed?
On average, 14% of all UA3640 flights are delayed. The average delay is 25 minutes.
Can I get compensation for my delayed or cancelled UA3640 flight or baggage issues?
If your UA3640 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 UA3640 Flight Tracker above for more details.
Flight UA3640 is code-shared by 3 airlines using the flight numbers AC5215, CM1080, NZ2112
Other flights departing from Buffalo BUF: UA4190, UA4588, WN537, DL8958
Other flights arriving at Chicago ORD: UA3702, UA5525, UA4600, UA5234
All flights connecting Buffalo BUF to Chicago ORD.