G4 637 Phoenix to Missoula Flight Status

Allegiant Air Flight G4637 from Phoenix Mesa Gateway Airport AZA to Missoula International Airport MSO is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on December 30th, 2025.
Check the table below for G4637's most recent flight history:

G4 637 Flight Status & Schedule

Date Departure Arrival Status
Dec 30 17:53 20:03
Landed
Track >
Dec 23 17:38 21:29
Diverted
Track >
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Aug 10 08:21 11:36
Landed
Track >
Aug 07 08:18 11:20
Landed
Track >
Aug 03 08:10 11:14
Landed
Track >

Allegiant Air G4 637 Phoenix to Missoula Flight Information

Allegiant Air Flight G4637 connects Phoenix, United States to Missoula, United States, taking off from Phoenix Mesa Gateway Airport AZA and landing at Missoula International Airport MSO.

How long is the G4637 flight from Phoenix to Missoula?

The average flight time from Phoenix to Missoula is 2 hours and 14 minutes. The flight distance is 1528 km / 949 miles and the average flight speed is 706 km/h / 439 mph.

What is the On-Time Performance (OTP) of Allegiant Air Flight G4637 Phoenix to Missoula?

The Airportia On-Time Performance Rating for Allegiant Air Flight G4637 is 4.8/5 stars. This metric is calculated using data from the past 10 flights.

When was the latest G4637 flight?

The latest flight took off on Wednesday, December 31st, 2025 with the flight status being Landed on 20:03.

How else can the flight G4637 be referenced as?

This Allegiant Air flight can also be referenced as AAY637, G40637, G4 637, AAY 637.

How often is flight G4637 delayed?

On average, 30% of all G4637 flights are delayed. The average delay is 38 minutes.

Can I get compensation for my delayed or cancelled G4637 flight or baggage issues?

If your G4637 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 G4637 Flight Tracker above for more details.

G4637 and Phoenix AZA to Missoula MSO Flights

Other flights departing from Phoenix AZA: G42288, G4760, G4726, G41597

Other flights arriving at Missoula MSO: AS2230, UA5335, AS2254, AS1480

All flights connecting Phoenix AZA to Missoula MSO.

G4637 Allegiant Air Flight: Phoenix to Missoula Route Map

G4637 Allegiant Air Flight Map: Phoenix to Missoula
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Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.