Rankings / Regional airlines / SkyWest Airlines
2025 profileSkyWest Airlines
SkyWest is based in St. George, Utah, and is the largest regional airline in North America. It flies under four partner brands at once: United Express, Delta Connection, American Eagle and Alaska SkyWest. SkyWest bought Atlantic Southeast Airlines from Delta in 2005 and ExpressJet in 2010, and its own record here runs through 2025.
- 45.9 millionpassengers, 2025
- 68seats per flight on average
- 477 milesaverage trip per passenger
- 42.8seat-miles per gallon
How it changed
SkyWest Airlines carried 45.9 million passengers in 2025, its busiest year in this data.
Its average flight had 38 seats in 2002 and 68 in 2025, a sign of larger aircraft replacing smaller ones. The average passenger flew 374 miles per segment in 2002 and 477 in 2025, and 79% of its seat-miles were filled in 2025.
Who it flew for
SkyWest Airlines flew for more than one airline, and sometimes several at once. Our estimate of the split between them, which is based on the airports it serves, is too rough to publish for a regional like this. The summary at the top names its partners from public record.
The fleet
SkyWest Airlines operated 581 passenger aircraft of its own in 2025. The average age was 14.0 years: 11% of the aircraft were under five years old and 39% were twenty or older. The oldest was a Bombardier CRJ-700 built in 1999.
In 2006 the average age was 4.6 years across 257 aircraft. It's older now by 9.4 years, and the fleet is bigger.
SkyWest Airlines aircraft by model, 2025
| Model | Aircraft | Average seats | Average age |
|---|---|---|---|
| Embraer E175 | 270 | 75 | 7.0 |
| Bombardier CRJ-200 | 127 | 50 | 22.3 |
| Bombardier CRJ-700 | 126 | 70 | 19.7 |
| Bombardier CRJ-900 | 46 | 76 | 15.3 |
| Bombardier CRJ-550 | 11 | 50 | 20.5 |
| Embraer E170 | 1 | 76 | 21.0 |
Fuel
In 2025 SkyWest Airlines burned 644 million gallons of jet fuel, which is 42.8 seat-miles per gallon and about 0.287 kg of CO2 per passenger-mile. Over 500 miles that's roughly 143 kg per passenger. Small regional aircraft burn more fuel per seat than the mainline jets, and a short hop spends a larger share of its fuel on take-off and climb, so these figures aren't graded against the airlines on the main list. Their flying and fuel are counted in the airlines whose names are on the tickets.
For some years SkyWest Airlines didn't file usable fuel figures with BTS. In 3 of them we priced its own flight hours at the fuel burn per hour that other airlines reported for the same aircraft types that year. They're marked with an asterisk in the table below. See the methodology.
Year-by-year figures
| Year | Passengers (millions) | Departures (thousands) | Seats per flight | Average trip (miles) | Load factor | Seat-miles (billions) | Seat-miles per gallon |
|---|---|---|---|---|---|---|---|
| 2025 | 45.9 | 878 | 67.5 | 477 | 79.4% | 27.56 | 42.8 |
| 2024 | 42.2 | 778 | 68.7 | 479 | 81.3% | 24.86 | 43.7 |
| 2023 | 38.5 | 702 | 68.6 | 470 | 81.9% | 22.14 | 43.4 |
| 2022 | 40.1 | 745 | 66.7 | 516 | 82.4% | 25.08 | 45.3 |
| 2021 | 35.6 | 757 | 65.4 | 562 | 74.0% | 27.04 | 46.2 |
| 2020 | 20.4 | 591 | 64.2 | 542 | 56.2% | 19.65 | 46.8 |
| 2019 | 42.5 | 851 | 63.0 | 533 | 80.8% | 28.02 | 44.0 |
| 2018 | 39.1 | 798 | 62.5 | 531 | 80.5% | 25.79 | 43.0 |
| 2017 | 35.9 | 732 | 62.3 | 525 | 81.0% | 23.24 | 47.6 |
| 2016 | 31.3 | 641 | 60.9 | 561 | 82.3% | 21.33 | 47.8 |
| 2015 | 30.2 | 625 | 59.4 | 563 | 83.1% | 20.43 | 49.0 |
| 2014 | 27.9 | 636 | 54.3 | 557 | 83.4% | 18.59 | 48.7 |
| 2013 | 27.3 | 650 | 53.0 | 548 | 82.2% | 18.19 | 46.8 |
| 2012 | 26.2 | 636 | 52.2 | 542 | 82.0% | 17.30 | 49.5 |
| 2011 | 24.5 | 616 | 51.6 | 556 | 79.8% | 17.06 | 47.6 |
| 2010 | 24.3 | 625 | 51.4 | 545 | 79.2% | 16.74 | 47.4 |
| 2009 | 21.3 | 571 | 50.4 | 549 | 78.1% | 15.00 | 46.5* |
| 2008 | 20.9 | 585 | 49.4 | 533 | 76.3% | 14.62 | 45.8* |
| 2007 | 22.1 | 612 | 48.6 | 523 | 77.5% | 14.92 | 59.7 |
| 2006 | 19.5 | 556 | 46.3 | 486 | 79.5% | 11.95 | 45.3 |
| 2005 | 16.6 | 524 | 44.1 | 460 | 75.2% | 10.15 | 44.6 |
| 2004 | 13.4 | 465 | 41.7 | 413 | 73.5% | 7.55 | 43.4 |
| 2003 | 10.8 | 396 | 39.9 | 393 | 71.8% | 5.89 | 45.1 |
| 2002 | 2.2 | 88 | 37.9 | 374 | 70.0% | 1.17 | 45.1* |
Regionals with shared partners
These profiles have a partner airline in common with SkyWest Airlines in at least one data year. The partner split is estimated, and the airlines may have flown for the shared network at different times.
- Air Wisconsin
- Atlantic Southeast Airlines
- Chautauqua Airlines
- Colgan Air
- Comair
- CommuteAir
- Compass Airlines
- Endeavor Air
- Envoy Air
- ExpressJet
- GoJet Airlines
- Independence Air
- Mesa Airlines
- Mesaba Airlines
- Piedmont Airlines
- PSA Airlines
- Republic Airways
- Shuttle America
- Trans States Airlines
Nearby in fuel efficiency
Neighbours in the seat-miles per gallon table, using each airline's last data year. Fuel estimates are marked on the profiles, and these aren't same-year rankings.
Airline references
Source: US Bureau of Transportation Statistics (BTS), T-100 traffic and Schedule T-2 fuel filings; US EPA jet-fuel CO2 factor. Methods and allocation limits.
Back to all regional airlines or the fuel rankings.