AIR WISCONSIN
- OPERATED bOMBARDIER CRJ-200 FOR UNITED EXPRESS, ON OCCASION. 

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2002 Bombardier CRJ-200LR | N428AW | MSN 7695 | United Express | opby. Air Wisconsin | Y50 | AWI3796 | PHL-IAD | KPHL (Philadelphia International Airport, PA) | Nov. 17, 2021
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2003 Bombardier CRJ-200LR | N460AW | MSN 7867 | United Express | opby. Air Wisconsin | Y50 | AWI3871 | IAD-PHL | KPHL (Philadelphia Int'l Airport, PA) | December 20, 2020

MESA AIRLINES
- OPERATES BOMBARDIER CRJ-700 FOR UNITED EXPRESS.

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2006 Bombardier CRJ-701LR | N518LR | MSN 10259 | United Express | opby. Mesa Airlines | C6Y64 | ASH6063 | IAD-PHL | KPHL (Philadelphia International Airport) | May 28, 2020
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2020 Embraer ERJ-175LL(WL) | N85369 | MSN 17000863 | United Express | opby. Mesa Airlines | C12Y58 | ASH6203 | PHL-IAH | KPHL | December 24, 2020

REPUBLIC AIRLINES
- OPERATED DEHAVILLAND DHC-8 and EMBRAER ERJ-170/ERJ-175 FOR UNITED EXPRESS.

SKYWEST AIRLINES
- OPERATES EMBRAER ERJ-175 FOR UNITED EXPRESS.
- OPERATES TO CHICAGO O-HARE AND HOUSTON-BUSH Intercontinental hubs.

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2019 Embraer ERJ-175LL(WL) | N623UX | MSN 17000830 | United Express | opby. SkyWest Airlines | C12Y58 | SKW5542 | ORD-PHL | KPHL | November 3, 2020

TRANS STATES AIRLINES
- OPERATED EMBRAER ERJ-145 FOR UNITED EXPRESS.
- Mostly operated short, commuter legs to kiad (Washington-dulles).

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2002 Embraer ERJ-145XR | N11113 | MSN 145662 | United Express | opby. Trans States Airlines | Y50 | KPHL (Philadelphia International Airport, PA) | January 10, 2016
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2003 Embraer ERJ-145XR | N24128 | MSN 145700 | United Express | opby. Trans States Airlines | Y50 | KPHL (Philadelphia International Airport, PA) | December 20, 2015
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1999 Embraer ERJ-145LR | N809HK | MSN 145187 | United Express | United globe c/s | opby. Trans States Airlines | Y50 | KPHL (Philadelphia International Airport, PA) | July 2, 2015
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2001 Embraer ERJ-145MP | N854HK | MSN 145408 | United Express | United globe c/s | opby. Trans States Airlines | Y50 | KPHL (Philadelphia Int'l Airport, PA) | December 5, 2015
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2004 Embraer ERJ-145LR | N842HK | MSN 14500830 | United Express | opby. Trans States Airlines | United Tulip c/s | Y50 | KPHL (Philadelphia Int'l Airport, PA) | December 12, 2015
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2002 Embraer ERJ-145XR | N11113 | MSN 145662 | United Express | opby. Trans States Airlines | Y50 | KPHL (Philadelphia International Airport, PA) | January 26, 2016