Airline reliability
SkyWest Airlines on-time performance
SkyWest Airlines is a regional airline. It operates flights sold under other airlines' brands (United Express, Delta Connection, American Eagle, Alaska); DOT data reports it under its own name. Reliability of SkyWest Airlines flights across 275 airports and 1,457 routes, September 2025 to August 2026.
275 airports1,457 routes
- On time
- 77.0% Rank 6 of 14 airlines
- Cancelled
- 1.8% All airlines 1.9%
- 60+ minutes late
- 8.9% All airlines 8.1%
- Scheduled flights
- 855,406 12 months
What this means
SkyWest Airlines ranked 6 of 14 on on-time arrival.
- SkyWest Airlines reported 855,406 scheduled flights over the 12 months to August 2026. 77.0% arrived within 15 minutes of schedule, 1.4 points higher than the average for all reporting airlines (75.6%).
- 1.8% of its flights were cancelled (all-airline average 1.9%) and 8.9% arrived an hour or more late.
- Its most punctual busy route was Helena (HLN) to Salt Lake City (SLC) (95.2% on time); its least punctual was Carlsbad (CLD) to San Francisco (SFO) (35.8%).
- Over the last 3 years, October was the most reliable month for SkyWest Airlines (84.2% on time) and January the least reliable (74.7%).
- Cancellations peaked in January, when 3.1% of flights were cancelled.
- Flights scheduled to depart before 6 am were the most punctual (87.3% on time); flights scheduled to depart 6 pm to 7 pm were the least (69.8%).
Month by month, last 12 months
Share of scheduled flights on time All airlines 75.6%
Show as table
| Period | On time | Flights |
|---|---|---|
| Sep 2025 | 84.2% | 69,406 |
| Oct 2025 | 82.4% | 71,927 |
| Nov 2025 | 78.3% | 68,347 |
| Dec 2025 | 71.2% | 68,814 |
| Jan 2026 | 74.0% | 66,168 |
| Feb 2026 | 77.0% | 62,073 |
| Mar 2026 | 74.8% | 73,391 |
| Apr 2026 | 78.1% | 73,115 |
| May 2026 | 79.2% | 75,994 |
| Jun 2026 | 76.2% | 73,673 |
| Jul 2026 | 74.6% | 77,072 |
| Aug 2026 | 74.3% | 75,426 |
Best and worst months for SkyWest Airlines
Share of scheduled flights on time 12-month average 77.0%
Show as table
| Period | On time | Flights |
|---|---|---|
| January | 74.7% | 188,018 |
| February | 77.7% | 175,204 |
| March | 78.2% | 200,149 |
| April | 80.6% | 202,103 |
| May | 79.3% | 211,063 |
| June | 75.6% | 209,186 |
| July | 75.2% | 216,863 |
| August | 77.1% | 214,966 |
| September | 84.1% | 193,284 |
| October | 84.2% | 200,859 |
| November | 81.4% | 190,583 |
| December | 77.0% | 191,411 |
On-time rate by departure hour
Share of scheduled flights on time
Show as table
| Period | On time | Flights |
|---|---|---|
| Departing before 6 am | 87.3% | 24,754 |
| Departing 6 am to 7 am | 85.6% | 46,575 |
| Departing 7 am to 8 am | 83.2% | 55,595 |
| Departing 8 am to 9 am | 81.4% | 58,091 |
| Departing 9 am to 10 am | 80.9% | 51,466 |
| Departing 10 am to 11 am | 78.9% | 60,639 |
| Departing 11 am to noon | 78.7% | 53,443 |
| Departing noon to 1 pm | 77.1% | 55,997 |
| Departing 1 pm to 2 pm | 78.1% | 57,695 |
| Departing 2 pm to 3 pm | 74.1% | 51,586 |
| Departing 3 pm to 4 pm | 75.1% | 56,186 |
| Departing 4 pm to 5 pm | 71.7% | 53,448 |
| Departing 5 pm to 6 pm | 70.9% | 61,497 |
| Departing 6 pm to 7 pm | 69.8% | 48,291 |
| Departing 7 pm to 8 pm | 70.8% | 42,250 |
| Departing 8 pm to 9 pm | 74.4% | 36,209 |
| Departing 9 pm to 10 pm | 74.7% | 29,695 |
| Departing 10 pm to 11 pm | 73.9% | 10,745 |
| Departing 11 pm to midnight | 77.7% | 1,244 |
Most punctual SkyWest Airlines routes
| Route | On time | Cancelled | 60+ min late | Flights |
|---|---|---|---|---|
| Helena (HLN) to Salt Lake City (SLC) | 95.2% | 0.3% | 1.4% | 725 |
| Salt Lake City (SLC) to Helena (HLN) | 94.9% | 0.3% | 1.0% | 725 |
| Elko (EKO) to Salt Lake City (SLC) | 94.8% | 0.7% | 2.2% | 579 |
| Boise (BOI) to Salt Lake City (SLC) | 94.5% | 0.2% | 1.6% | 513 |
| Twin Falls (TWF) to Salt Lake City (SLC) | 94.5% | 0.5% | 2.0% | 859 |
| Grand Junction (GJT) to Salt Lake City (SLC) | 94.5% | 0.0% | 1.9% | 584 |
| Salt Lake City (SLC) to Grand Junction (GJT) | 94.3% | 0.0% | 1.5% | 584 |
| Santa Barbara (SBA) to Salt Lake City (SLC) | 94.3% | 0.5% | 2.4% | 934 |
| Salt Lake City (SLC) to Cedar City (CDC) | 94.1% | 0.5% | 1.9% | 631 |
| San Jose (SJC) to Salt Lake City (SLC) | 94.0% | 0.2% | 2.7% | 662 |
Least punctual SkyWest Airlines routes
| Route | On time | Cancelled | 60+ min late | Flights |
|---|---|---|---|---|
| Carlsbad (CLD) to San Francisco (SFO) | 35.8% | 0.3% | 21.9% | 310 |
| Springfield (SGF) to Chicago (ORD) | 50.1% | 6.0% | 21.5% | 335 |
| Chicago (ORD) to Rochester (RST) | 51.9% | 5.2% | 24.4% | 484 |
| Aspen (ASE) to San Francisco (SFO) | 53.4% | 5.6% | 16.9% | 373 |
| Syracuse (SYR) to Chicago (ORD) | 54.2% | 4.9% | 16.3% | 306 |
| Chicago (ORD) to Salina (SLN) | 54.4% | 3.6% | 23.2% | 362 |
| Rochester (RST) to Chicago (ORD) | 54.4% | 4.7% | 22.5% | 485 |
| Santa Barbara (SBA) to San Francisco (SFO) | 54.5% | 1.7% | 16.2% | 692 |
| Chicago (ORD) to Aspen (ASE) | 54.8% | 3.2% | 16.0% | 1,180 |
| Morgantown (MGW) to Chicago (ORD) | 55.5% | 7.8% | 19.9% | 321 |
Routes with the most SkyWest Airlines cancellations
| Route | On time | Cancelled | 60+ min late | Flights |
|---|---|---|---|---|
| Detroit (DTW) to Pellston (PLN) | 66.3% | 14.0% | 8.8% | 659 |
| Pellston (PLN) to Detroit (DTW) | 70.6% | 14.0% | 8.3% | 659 |
| Escanaba (ESC) to Detroit (DTW) | 78.6% | 7.9% | 7.1% | 365 |
| Morgantown (MGW) to Chicago (ORD) | 55.5% | 7.8% | 19.9% | 321 |
| Detroit (DTW) to Marquette (MQT) | 71.4% | 7.4% | 9.9% | 364 |
| Detroit (DTW) to Escanaba (ESC) | 74.5% | 7.4% | 7.4% | 365 |
| Mason City (MCW) to Chicago (ORD) | 64.1% | 7.3% | 12.0% | 627 |
| Hancock/Houghton (CMX) to Chicago (ORD) | 62.2% | 7.2% | 15.1% | 788 |
| Chicago (ORD) to Hancock/Houghton (CMX) | 61.7% | 7.1% | 14.7% | 788 |
| Aspen (ASE) to Dallas/Fort Worth (DFW) | 63.0% | 7.0% | 14.2% | 1,185 |
Busiest SkyWest Airlines routes
| Route | On time | Cancelled | 60+ min late | Flights |
|---|---|---|---|---|
| Chicago (ORD) to Milwaukee (MKE) | 60.9% | 4.6% | 16.7% | 5,047 |
| Milwaukee (MKE) to Chicago (ORD) | 65.4% | 4.2% | 13.8% | 5,046 |
| Santa Ana (SNA) to San Francisco (SFO) | 64.2% | 1.9% | 12.3% | 3,567 |
| Los Angeles (LAX) to Sacramento (SMF) | 87.3% | 0.4% | 4.3% | 3,559 |
| Sacramento (SMF) to Los Angeles (LAX) | 89.6% | 0.4% | 3.9% | 3,558 |
| San Francisco (SFO) to Santa Ana (SNA) | 75.5% | 1.7% | 7.3% | 3,497 |
| Portland (PDX) to Seattle (SEA) | 85.0% | 0.6% | 4.0% | 3,472 |
| Seattle (SEA) to Portland (PDX) | 84.1% | 0.6% | 3.9% | 3,375 |
| Denver (DEN) to Colorado Springs (COS) | 75.3% | 1.6% | 9.5% | 3,338 |
| Colorado Springs (COS) to Denver (DEN) | 82.1% | 1.5% | 6.5% | 3,337 |
Sources & data dates
- Source
- U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
- Period
- September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
- Data through
- August 2026
- Processed
- 2026-11-03
- Scope
- Scheduled nonstop domestic flights operated by SkyWest Airlines (OO).
- Method
- Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.