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AS 4278 Chicago to Miami Flight Status

Alaska Airlines Flight AS4278 from Chicago O'Hare International Airport ORD to Miami International Airport MIA is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on May 20th, 2026.
Check the table below for AS4278's most recent flight history:

AS 4278 Flight Status & Schedule

Date Departure Arrival Status
May 20 14:41 18:17
Landed
Track >
May 19 15:17 18:55
Landed
Track >
May 13 14:36 18:09
Landed
Track >
May 12 14:46 18:13
Landed
Track >
May 06 14:30 18:48
Unknown
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Alaska Airlines AS 4278 Chicago to Miami Flight Information

Alaska Airlines Flight AS4278 connects Chicago, United States to Miami, United States, taking off from Chicago O'Hare International Airport ORD and landing at Miami International Airport MIA.

How long is the AS4278 flight from Chicago to Miami?

The average flight time from Chicago to Miami is 2 hours and 38 minutes. The flight distance is 1930 km / 1199 miles and the average flight speed is 736 km/h / 458 mph.

What is the On-Time Performance (OTP) of Alaska Airlines Flight AS4278 Chicago to Miami?

The Airportia On-Time Performance Rating for Alaska Airlines Flight AS4278 is 5/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight AS4278 arriving at?

Flight AS4278 arrives at Miami International Airport (MIA) Terminal N.

When was the latest AS4278 flight?

The latest flight took off on Wednesday, May 20th, 2026 with the flight status being Landed on 18:17.

How else can the flight AS4278 be referenced as?

This Alaska Airlines flight can also be referenced as ASA4278, AS 4278, ASA 4278.

How often is flight AS4278 delayed?

On average, 30% of all AS4278 flights are delayed. The average delay is 8 minutes.

Can I get compensation for my delayed or cancelled AS4278 flight or baggage issues?

If your AS4278 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 AS4278 Flight Tracker above for more details.

AS4278 and Chicago ORD to Miami MIA Flights

Other flights departing from Chicago ORD: AA2174, UA2329, UA4439, CI5141

Other flights arriving at Miami MIA: AA1909, AA2174, AA2834, AA1495

All flights connecting Chicago ORD to Miami MIA.

AS4278 Alaska Airlines Flight: Chicago to Miami Route Map

AS4278 Alaska Airlines Flight Map: Chicago to Miami
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.