| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Dec 17 | STL | ORD | 10:21 | 11:13 |
Landed
|
Track > |
| Dec 16 | STL | ORD | 10:04 | 10:54 |
Landed
|
Track > |
| Dec 15 | STL | ORD | 10:38 | 11:35 |
Landed
|
Track > |
| Dec 14 | STL | ORD | 12:01 | 12:50 |
Delayed
|
Track > |
| Dec 13 | STL | ORD | 10:06 | 10:54 |
Landed
|
Track > |
| Dec 12 | STL | ORD | 11:20 | 12:17 |
Landed Late
|
Track > |
| Dec 11 | STL | ORD | 12:12 | 13:03 |
Delayed
|
Track > |
| Dec 10 | STL | ORD | 11:58 | 12:48 |
Delayed
|
Track > |
| Dec 09 | STL | ORD | 10:08 | 11:03 |
Landed
|
Track > |
| Dec 08 | STL | ORD | 10:09 | 11:03 |
Landed
|
Track > |
United Airlines Flight UA4399 connects St. Louis, United States to Chicago, United States, taking off from St. Louis Lambert International Airport STL and landing at Chicago O'Hare International Airport ORD.
How long is the UA4399 flight from St. Louis to Chicago?
The average flight time from St. Louis to Chicago is 52 minutes. The flight distance is 415 km / 258 miles and the average flight speed is 478 km/h / 297 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA4399 St. Louis to Chicago?
The Airportia On-Time Performance Rating for United Airlines Flight UA4399 is 4.5/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA4399 arriving at?
Flight UA4399 arrives at Chicago O'Hare International Airport (ORD) Terminal 2.
When was the latest UA4399 flight?
The latest flight took off on Wednesday, December 17th, 2025 with the flight status being Landed on 11:13.
How else can the flight UA4399 be referenced as?
This United Airlines flight can also be referenced as UAL4399, UA 4399, UAL 4399.
How often is flight UA4399 delayed?
On average, 50% of all UA4399 flights are delayed. The average delay is 61 minutes.
Can I get compensation for my delayed or cancelled UA4399 flight or baggage issues?
If your UA4399 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 UA4399 Flight Tracker above for more details.
Flight UA4399 is code-shared by 3 airlines using the flight numbers AC4935, AV2331, NZ2900
Other flights departing from St. Louis STL: DL4715, WN1770, AA3139, WN1164
Other flights arriving at Chicago ORD: UA1811, UA561, UA467, UA1373
All flights connecting St. Louis STL to Chicago ORD.
