| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Aug 05 | SEA | BOS | 00:55 | 09:00 |
Delayed
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| Aug 04 | SEA | BOS | 23:41 | 07:27 |
Landed
|
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| Aug 03 | SEA | BOS | 23:56 | 07:29 |
Landed
|
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| Aug 02 | SEA | BOS | 00:04 | 08:14 |
Landed Late
|
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| Aug 01 | SEA | BOS | 23:44 | 07:17 |
Landed
|
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| Jul 31 | SEA | BOS | 23:28 | 07:16 |
Landed
|
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| Jul 30 | SEA | BOS | 23:33 | 07:18 |
Landed
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| Jul 29 | SEA | BOS | 23:33 | 07:20 |
Landed
|
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| Jul 28 | SEA | BOS | 23:31 | 07:13 |
Landed
|
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| Jul 27 | SEA | BOS | 23:39 | 07:11 |
Landed
|
Track > |
Korean Air Flight KE3143 connects Seattle, United States to Boston, United States, taking off from Seattle Tacoma International Airport SEA and landing at Boston Logan International Airport BOS.
How long is the KE3143 flight from Seattle to Boston?
The average flight time from Seattle to Boston is 4 hours and 46 minutes. The flight distance is 4005 km / 2489 miles and the average flight speed is 842 km/h / 523 mph.
How many KE3143 flights are operated per week?
7 flights per week. The flight KE3143 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
What is the On-Time Performance (OTP) of Korean Air Flight KE3143 Seattle to Boston?
The Airportia On-Time Performance Rating for Korean Air Flight KE3143 is 4.8/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight KE3143 arriving at?
Flight KE3143 arrives at Boston Logan International Airport (BOS) Terminal E.
When was the latest KE3143 flight?
The latest flight took off on Thursday, August 6th, 2026 with the flight status being En-Route on 09:00.
How else can the flight KE3143 be referenced as?
This Korean Air flight can also be referenced as KAL3143, KE 3143, KAL 3143.
How often is flight KE3143 delayed?
On average, 20% of all KE3143 flights are delayed. The average delay is 62 minutes.
Can I get compensation for my delayed or cancelled KE3143 flight or baggage issues?
If your KE3143 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 KE3143 Flight Tracker above for more details.
Other flights departing from Seattle SEA: DL473, AS490, AS382, AS22
Other flights arriving at Boston BOS: LA8164, AA2453, DL473, JJ8164
All flights connecting Seattle SEA to Boston BOS.
