AS 678 Boston to Seattle Flight Status

Alaska Airlines Flight AS678 from Boston Logan International Airport BOS to Seattle Tacoma International Airport SEA is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on May 13th, 2026.
Check the table below for AS678's most recent flight history:

AS 678 Flight Status & Schedule

Date Departure Arrival Status
May 13 09:27 12:01
Landed
Track >

Alaska Airlines AS 678 Boston to Seattle Flight Information

Alaska Airlines Flight AS678 connects Boston, United States to Seattle, United States, taking off from Boston Logan International Airport BOS and landing at Seattle Tacoma International Airport SEA.

How long is the AS678 flight from Boston to Seattle?

The average flight time from Boston to Seattle is 5 hours and 34 minutes. The flight distance is 4005 km / 2489 miles and the average flight speed is 720 km/h / 447 mph.

What is the On-Time Performance (OTP) of Alaska Airlines Flight AS678 Boston to Seattle?

The Airportia On-Time Performance Rating for Alaska Airlines Flight AS678 is 5/5 stars. This metric is calculated using data from the past 10 flights.

When was the latest AS678 flight?

The latest flight took off on Wednesday, May 13th, 2026 with the flight status being Landed on 12:01.

How else can the flight AS678 be referenced as?

This Alaska Airlines flight can also be referenced as ASA678, AS0678, AS 678, ASA 678.

How often is flight AS678 delayed?

On average, 0% of all AS678 flights are delayed. The average delay is 0 minutes.

Can I get compensation for my delayed or cancelled AS678 flight or baggage issues?

If your AS678 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 AS678 Flight Tracker above for more details.

AS678 and Boston BOS to Seattle SEA Flights

Flight AS678 is code-shared by 2 airlines using the flight numbers AA7490, DE5234

Other flights departing from Boston BOS: AA4163, SY1606, AA2951, AA4698

Other flights arriving at Seattle SEA: UA694, AS3407, AS2417, 5Y9848

All flights connecting Boston BOS to Seattle SEA.

AS678 Alaska Airlines Flight: Boston to Seattle Route Map

Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.