| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jan 04 | ONT | ATL | 22:38 | 05:05 |
Landed
|
Track > |
| Jan 03 | ONT | ATL | 22:36 | 05:09 |
Landed
|
Track > |
| Jan 02 | ONT | ATL | 22:43 | 05:15 |
Landed
|
Track > |
| Dec 30 | ONT | ATL | 22:51 | 05:24 |
Landed
|
Track > |
| Dec 29 | ONT | ATL | 22:29 | 05:39 |
Cancelled
|
Track > |
| Claim > | ||||||
| Dec 28 | ONT | ATL | 22:29 | 05:39 |
Cancelled
|
Track > |
| Dec 27 | ONT | ATL | 22:57 | 05:28 |
Landed
|
Track > |
| Dec 26 | ONT | ATL | 22:37 | 05:09 |
Landed
|
Track > |
| Dec 23 | ONT | ATL | 22:42 | 05:21 |
Unknown
|
Track > |
| Dec 22 | ONT | ATL | 22:52 | 05:22 |
Landed
|
Track > |
KLM Flight KL6377 connects Ontario, United States to Atlanta, United States, taking off from Ontario International Airport ONT and landing at Atlanta Hartsfield-Jackson International Airport ATL.
How long is the KL6377 flight from Ontario to Atlanta?
The average flight time from Ontario to Atlanta is 3 hours and 32 minutes. The flight distance is 3050 km / 1895 miles and the average flight speed is 837 km/h / 520 mph.
What is the On-Time Performance (OTP) of KLM Flight KL6377 Ontario to Atlanta?
The Airportia On-Time Performance Rating for KLM Flight KL6377 is 5/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight KL6377 arriving at?
Flight KL6377 arrives at Atlanta Hartsfield-Jackson International Airport (ATL) Terminal S.
When was the latest KL6377 flight?
The latest flight took off on Monday, January 5th, 2026 with the flight status being Landed on 05:05.
How else can the flight KL6377 be referenced as?
This KLM flight can also be referenced as KLM6377, KL 6377, KLM 6377.
How often is flight KL6377 delayed?
On average, 0% of all KL6377 flights are delayed. The average delay is 0 minutes.
Can I get compensation for my delayed or cancelled KL6377 flight or baggage issues?
If your KL6377 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 KL6377 Flight Tracker above for more details.
Other flights departing from Ontario ONT: WN1745, DL828, UA1180, 8C3316
Other flights arriving at Atlanta ATL: DL1568, DL703, DL828, TK6015
All flights connecting Ontario ONT to Atlanta ATL.