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AM4278 Flight Status Aeromexico: Seattle to Portland (AMX4278)

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AM 4278 Seattle to Portland Flight Status

Aeromexico Flight AM4278 from Seattle Tacoma International Airport SEA to Portland International Airport PDX is not scheduled for today June 5th, 2026.
The last time the flight was scheduled was on November 5th, 2025.
Check the table below for AM4278's most recent flight history:

AM 4278 Flight Status & Schedule

Date Departure Arrival Status
Nov 05 23:21 23:51
Landed
 Track >
Nov 04 23:05 23:36
Landed
 Track >
Nov 03 23:09 23:38
Landed
 Track >
Nov 02 23:08 23:42
Landed
 Track >
< All SEA Departures All PDX Arrivals >

Aeromexico AM 4278 Seattle to Portland Flight Information

Aeromexico Flight AM4278 connects Seattle, United States to Portland, United States, taking off from Seattle Tacoma International Airport SEA and landing at Portland International Airport PDX.

How long is the AM4278 flight from Seattle to Portland?

The average flight time from Seattle to Portland is 31 minutes. The flight distance is 208 km / 129 miles and the average flight speed is 404 km/h / 251 mph.

What is the On-Time Performance (OTP) of Aeromexico Flight AM4278 Seattle to Portland?

The Airportia On-Time Performance Rating for Aeromexico Flight AM4278 is 5/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight AM4278 arriving at?

Flight AM4278 arrives at Portland International Airport (PDX) Terminal 2.

When was the latest AM4278 flight?

The latest flight took off on Thursday, November 6th, 2025 with the flight status being Landed on 23:51.

How else can the flight AM4278 be referenced as?

This Aeromexico flight can also be referenced as AMX4278, AM 4278, AMX 4278.

How often is flight AM4278 delayed?

On average, 0% of all AM4278 flights are delayed. The average delay is 0 minutes.

Can I get compensation for my delayed or cancelled AM4278 flight or baggage issues?

If your AM4278 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 AM4278 Flight Tracker above for more details.

AM4278 and Seattle SEA to Portland PDX Flights

Other flights departing from Seattle SEA: DL2753, DL3674, DL2816, DL3636

Other flights arriving at Portland PDX: DL3674, AS2618, UA8168, A86010

All flights connecting Seattle SEA to Portland PDX.

AM4278 Aeromexico Flight: Seattle to Portland Route Map

Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
New Flights: WS4105 FV6191 BN1937 DX557 SP3574 BT3527 BT352 PH1 4D1025 F99461
See Also: Flight Tracker Airports Airlines News Flights Monitor Delay Compensation
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.