| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jun 24 | IAD | STL | 09:02 | 09:48 |
Landed
|
Track > |
| Jun 23 | IAD | STL | 09:09 | 09:50 |
Landed
|
Track > |
| Jun 22 | IAD | STL | 09:16 | 10:02 |
Landed
|
Track > |
| Jun 21 | IAD | STL | 09:09 | 09:56 |
Landed
|
Track > |
| Jun 20 | IAD | STL | 09:21 | 10:07 |
Landed
|
Track > |
| Jun 19 | IAD | STL | 10:23 | 11:10 |
Landed Late
|
Track > |
| Jun 18 | IAD | STL | 09:20 | 10:18 |
Landed
|
Track > |
| Jun 17 | IAD | STL | 12:45 | 10:27 |
Unknown
|
Track > |
| Jun 16 | IAD | STL | 09:14 | 10:11 |
Landed
|
Track > |
| Jun 15 | IAD | STL | 09:12 | 10:06 |
Landed
|
Track > |
United Airlines Flight UA4388 connects Washington, United States to St. Louis, United States, taking off from Washington Dulles International Airport IAD and landing at St. Louis Lambert International Airport STL.
How long is the UA4388 flight from Washington to St. Louis?
The average flight time from Washington to St. Louis is 1 hour and 49 minutes. The flight distance is 1117 km / 694 miles and the average flight speed is 600 km/h / 373 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA4388 Washington to St. Louis?
The Airportia On-Time Performance Rating for United Airlines Flight UA4388 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA4388 arriving at?
Flight UA4388 arrives at St. Louis Lambert International Airport (STL) Terminal 1.
When was the latest UA4388 flight?
The latest flight took off on Wednesday, June 24th, 2026 with the flight status being Landed on 09:48.
How else can the flight UA4388 be referenced as?
This United Airlines flight can also be referenced as UAL4388, UA 4388, UAL 4388.
How often is flight UA4388 delayed?
On average, 10% of all UA4388 flights are delayed. The average delay is 43 minutes.
Can I get compensation for my delayed or cancelled UA4388 flight or baggage issues?
If your UA4388 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 UA4388 Flight Tracker above for more details.
Flight UA4388 is code-shared by 2 airlines using the flight numbers AV2344, CM2679
Other flights departing from Washington IAD: UA1998, UA1734, UA635, WN8627
Other flights arriving at St. Louis STL: AA974, WN3662, WN2087, WN733
All flights connecting Washington IAD to St. Louis STL.