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Flight OO4991

SkyWest Airlines flight OO4991

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Looking for OO4991 in the air…

Phoenix (PHX) to San Luis Obispo (SBP)

Historically, this flight arrives 15+ minutes late 24% of the time, and when it is late the delay averages 48 minutes. It was cancelled 0.8% of the time.

On-time arrivals
76.3%
Less than 15 minutes late
Cancelled
0.8%
Of scheduled flights
Average delay when late
48 min
Flights arriving 15+ minutes late
Flights tracked
120
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 65%
  • Late-arriving aircraft 29%
  • Air traffic control & airport 6%
  • Extreme weather 0%
  • Security 0%

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

Phoenix (PHX) to Sioux Falls (FSD)

Historically, this flight arrives 15+ minutes late 11% of the time, and when it is late the delay averages 63 minutes. It was cancelled 0.0% of the time.

On-time arrivals
88.8%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
63 min
Flights arriving 15+ minutes late
Flights tracked
107
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 88%
  • Airline (crew, maintenance, cleaning) 10%
  • Air traffic control & airport 2%
  • Extreme weather 0%
  • Security 0%

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

Sioux Falls (FSD) to Phoenix (PHX)

Historically, this flight arrives 15+ minutes late 21% of the time, and when it is late the delay averages 78 minutes. It was cancelled 0.0% of the time.

On-time arrivals
79.2%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
78 min
Flights arriving 15+ minutes late
Flights tracked
106
Scheduled flights in the period

What caused the delays

  • Airline (crew, maintenance, cleaning) 72%
  • Air traffic control & airport 16%
  • Late-arriving aircraft 11%
  • Extreme weather 1%
  • Security 0%

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

San Luis Obispo (SBP) to Phoenix (PHX)

Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 54 minutes. It was cancelled 0.0% of the time.

On-time arrivals
89.7%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
54 min
Flights arriving 15+ minutes late
Flights tracked
39
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 84%
  • Air traffic control & airport 9%
  • Airline (crew, maintenance, cleaning) 7%
  • Extreme weather 0%
  • Security 0%

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

Sioux Falls (FSD) to Chicago (ORD)

Historically, this flight arrives 15+ minutes late 35% of the time, and when it is late the delay averages 141 minutes. It was cancelled 3.7% of the time.

On-time arrivals
65.4%
Less than 15 minutes late
Cancelled
3.7%
Of scheduled flights
Average delay when late
141 min
Flights arriving 15+ minutes late
Flights tracked
27
Scheduled flights in the period

What caused the delays

  • Extreme weather 43%
  • Late-arriving aircraft 40%
  • Air traffic control & airport 12%
  • Airline (crew, maintenance, cleaning) 5%
  • Security 0%

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

Chicago (ORD) to Sioux Falls (FSD)

Historically, this flight arrives 15+ minutes late 30% of the time, and when it is late the delay averages 110 minutes. It was cancelled 0.0% of the time.

On-time arrivals
70.4%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
110 min
Flights arriving 15+ minutes late
Flights tracked
27
Scheduled flights in the period

What caused the delays

  • Late-arriving aircraft 41%
  • Airline (crew, maintenance, cleaning) 24%
  • Air traffic control & airport 21%
  • Extreme weather 14%
  • Security 0%

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

Chicago (ORD) to Wichita (ICT)

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

Phoenix (PHX) to Tulsa (TUL)

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

On-time arrivals
50.0%
Less than 15 minutes late
Cancelled
0.0%
Of scheduled flights
Average delay when late
68 min
Flights arriving 15+ minutes late
Flights tracked
2
Scheduled flights in the period

What caused the delays

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

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

Tulsa (TUL) to Phoenix (PHX)

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

Austin (AUS) to Los Angeles (LAX)

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

Manhattan (MHK) to Dallas-Fort Worth (DFW)

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

Chicago (ORD) to Springfield (SGF)

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

Springfield (SGF) to Chicago (ORD)

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

In the news

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On-time arrivals by month
Sep 2025 Aug 2026
Show as table
MonthOn timeFlights
September 2025 89.7% 58
October 2025 95.0% 20
November 2025 100.0% 2
December 2025 62.5% 16
January 2026 40.0% 5
February 2026 63.2% 19
March 2026 79.3% 31
April 2026 84.8% 46
May 2026 94.6% 56
June 2026 68.3% 60
July 2026 88.5% 61
August 2026 68.9% 62

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

Latest airport & airline headlines

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Headlines found by Google News; stories open on the publisher's site.