| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Apr 06 | ORD | BUF | 13:47 | 15:52 |
Unknown
|
Track > |
| Apr 02 | ORD | BUF | 15:37 | 17:43 |
Delayed
|
Track > |
| Apr 01 | ORD | BUF | 15:08 | 17:12 |
Delayed
|
Track > |
| Mar 31 | ORD | BUF | 16:01 | 18:09 |
Delayed
|
Track > |
| Mar 30 | ORD | BUF | 13:55 | 16:02 |
Unknown
|
Track > |
| Mar 26 | ORD | BUF | 13:54 | 15:57 |
Landed
|
Track > |
| Mar 25 | ORD | BUF | 14:00 | 16:09 |
Unknown
|
Track > |
| Mar 24 | ORD | BUF | 14:01 | 16:07 |
Landed
|
Track > |
| Mar 23 | ORD | BUF | 14:52 | 16:53 |
Landed Late
|
Track > |
| Mar 19 | ORD | BUF | 14:09 | 16:17 |
Landed
|
Track > |
Alaska Airlines Flight AS4090 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 AS4090 flight from Chicago to Buffalo?
The average flight time from Chicago to Buffalo is 1 hour and 5 minutes. The flight distance is 760 km / 472 miles and the average flight speed is 695 km/h / 432 mph.
What is the On-Time Performance (OTP) of Alaska Airlines Flight AS4090 Chicago to Buffalo?
The Airportia On-Time Performance Rating for Alaska Airlines Flight AS4090 is 4.6/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest AS4090 flight?
The latest flight took off on Monday, April 6th, 2026 with the flight status being Unknown on 15:52.
How else can the flight AS4090 be referenced as?
This Alaska Airlines flight can also be referenced as ASA4090, AS 4090, ASA 4090.
How often is flight AS4090 delayed?
On average, 40% of all AS4090 flights are delayed. The average delay is 66 minutes.
Can I get compensation for my delayed or cancelled AS4090 flight or baggage issues?
If your AS4090 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 AS4090 Flight Tracker above for more details.
Other flights departing from Chicago ORD: AA3382, AA3737, AA2969, AA4403
Other flights arriving at Buffalo BUF: AA3382, AA5866, DL5782, DL3982
All flights connecting Chicago ORD to Buffalo BUF.
