Flight G4637

Allegiant Air flight G4637

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Looking for G4637 in the air…

Mesa (AZA) to Bozeman (BZN)

Historically, this flight arrives 15+ minutes late 11% of the time, and when it is late the delay averages 43 minutes. It was cancelled 0.0% of the time.

On-time arrivals

89.3%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

43 min

Flights arriving 15+ minutes late

Flights tracked

28

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 66%
• Air traffic control & airport 22%
• Airline (crew, maintenance, cleaning) 12%
• Extreme weather 0%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Mesa (AZA) to Kalispell (FCA)

Historically, this flight arrives 15+ minutes late 14% of the time, and when it is late the delay averages 138 minutes. It was cancelled 0.0% of the time.

On-time arrivals

85.7%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

138 min

Flights arriving 15+ minutes late

Flights tracked

28

Scheduled flights in the period

What caused the delays

• Airline (crew, maintenance, cleaning) 88%
• Air traffic control & airport 12%
• Late-arriving aircraft 0%
• Extreme weather 0%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Springfield (SGF) to Mesa (AZA)

Only 11 flights on record, which is too few for reliable odds.

On-time arrivals

100.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

—

Flights arriving 15+ minutes late

Flights tracked

11

Scheduled flights in the period

Billings (BIL) to Mesa (AZA)

Only 10 flights on record, which is too few for reliable odds.

On-time arrivals

100.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

—

Flights arriving 15+ minutes late

Flights tracked

10

Scheduled flights in the period

Mesa (AZA) to Chicago/Rockford (RFD)

Only 6 flights on record, which is too few for reliable odds.

On-time arrivals

66.7%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

27 min

Flights arriving 15+ minutes late

Flights tracked

6

Scheduled flights in the period

What caused the delays

• Air traffic control & airport 100%
• Airline (crew, maintenance, cleaning) 0%
• Late-arriving aircraft 0%
• Extreme weather 0%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Colorado Springs (COS) to Mesa (AZA)

Only 5 flights on record, which is too few for reliable odds.

On-time arrivals

100.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

—

Flights arriving 15+ minutes late

Flights tracked

5

Scheduled flights in the period

Mesa (AZA) to Fargo (FAR)

Only 4 flights on record, which is too few for reliable odds.

On-time arrivals

100.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

—

Flights arriving 15+ minutes late

Flights tracked

4

Scheduled flights in the period

Mesa (AZA) to Rapid City (RAP)

Only 4 flights on record, which is too few for reliable odds.

On-time arrivals

100.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

—

Flights arriving 15+ minutes late

Flights tracked

4

Scheduled flights in the period

Mesa (AZA) to Missoula (MSO)

Only 2 flights on record, which is too few for reliable odds.

On-time arrivals

0.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

18 min

Flights arriving 15+ minutes late

Flights tracked

2

Scheduled flights in the period

What caused the delays

• Late-arriving aircraft 56%
• Airline (crew, maintenance, cleaning) 44%
• Air traffic control & airport 0%
• Extreme weather 0%
• Security 0%

Share of delay minutes airlines attributed to each cause (BTS).

Mesa (AZA) to South Bend (SBN)

Only 2 flights on record, which is too few for reliable odds.

On-time arrivals

100.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

—

Flights arriving 15+ minutes late

Flights tracked

2

Scheduled flights in the period

Fargo (FAR) to Mesa (AZA)

Only 1 flight on record, which is too few for reliable odds.

On-time arrivals

100.0%

Less than 15 minutes late

Cancelled

0.0%

Of scheduled flights

Average delay when late

—

Flights arriving 15+ minutes late

Flights tracked

1

Scheduled flights in the period

Sep 2025 Aug 2026

Show as table

Month	On time	Flights
September 2025	100.0%	3
October 2025	100.0%	9
November 2025	100.0%	5
December 2025	83.3%	7
January 2026	90.9%	11
February 2026	81.8%	11
March 2026	77.8%	9
April 2026	87.5%	8
May 2026	90.9%	11
June 2026	100.0%	9
July 2026	77.8%	9
August 2026	100.0%	9

Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data