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Mesa Airlines, Inc. is a regional airline headquartered in Phoenix, Arizona, United States. Established in 1982, the airline has built its operations around connecting smaller communities with major airports through regional passenger services. Mesa operates flights for United Airlines under the United Express brand, helping travelers connect with destinations across the wider United network.
Mesa Airlines became part of Republic Airways Holdings following the merger completed on November 25, 2025. The combination brought the two regional airline businesses under one corporate group, while Mesa continued its regional flight operations. Its aircraft, pilots, and operational teams support scheduled services for United Airlines.
Mesa Airlines operates regional passenger flights on behalf of United Airlines under the United Express brand. This partnership connects smaller airports with United's major hubs, allowing passengers to continue their journeys through the airline's wider domestic and international network.
United Airlines manages flight schedules, ticket sales, reservations, and passenger-facing services for Mesa-operated flights. Passengers may see United Express displayed as the airline brand on their booking, while the operating-carrier details identify Mesa Airlines as the company providing the aircraft and flight crew.
This regional operating arrangement gives travelers access to connecting flights from smaller communities to major destinations without requiring every route to be operated by a larger mainline aircraft.
Mesa Airlines serves regional destinations through its United Express operations. Its flights connect smaller cities and regional airports with important United Airlines hubs, supporting onward journeys throughout the United States and selected international markets.
Important operating locations in Mesa's network include:
Through its Houston and Washington Dulles operations, Mesa connects passengers with United's wider route network. Its Louisville base also supports regional aircraft and crew operations. Available destinations and flight frequencies depend on United Airlines' schedules and network requirements.
Travelers should check United Airlines for current routes, departure times, connecting options, and flight availability before making travel arrangements.
Mesa Airlines operates a regional jet fleet focused on the Embraer E175 aircraft. These aircraft are designed for regional and medium-distance passenger journeys, connecting smaller airports with larger airline hubs.
The airline's current operating fleet includes:
The E175 offers a regional aircraft option for routes where passenger demand and airport requirements differ from those of larger mainline services. Seating layouts, cabin facilities, and aircraft assignments may vary depending on the flight. Passengers can review the aircraft information associated with their itinerary through United Airlines.
Mesa Airlines-operated flights are generally booked through United Airlines because Mesa provides regional services under the United Express brand. Travelers can use United's booking channels to search for available flights, compare schedules, review fare options, and reserve connecting itineraries.
When checking a reservation, passengers should review the operating-carrier information to identify which airline will operate each flight segment. A journey may include a Mesa-operated United Express flight followed by another service operated by United Airlines or a different partner carrier.
Before completing a booking, travelers should confirm their travel dates, departure and arrival airports, connection times, baggage allowance, seating options, and applicable ticket conditions.
Baggage policies for Mesa Airlines-operated flights generally follow the applicable United Airlines rules and the conditions of the passenger's ticket. Allowances and charges may depend on the route, fare type, passenger eligibility, and complete itinerary.
Passengers should review the following baggage details before departure:
For journeys involving connecting flights, travelers should check the baggage conditions for their complete itinerary. Reviewing the information provided during booking can help avoid unexpected charges at the airport.
Passengers traveling on Mesa-operated United Express flights generally use United Airlines' check-in services. Online check-in, boarding passes, airport counter information, and flight notifications are provided through United's passenger services.
Travelers should confirm their departure terminal, boarding gate, and flight status before leaving for the airport. Arriving with sufficient time for check-in, baggage drop, security screening, and boarding can help make the airport experience more convenient.
Regional connections are an important part of Mesa Airlines' operations. Its flights help passengers travel from smaller communities to major airports, where they can connect with United Airlines services to additional domestic and international destinations.
When planning a connecting journey, travelers should review the scheduled transfer time, airport terminal arrangements, baggage-transfer instructions, and operating-carrier details. Passengers with multiple flight segments should check the complete itinerary to understand the arrangements for each part of their trip.
For reservations, ticket changes, cancellations, refunds, and most passenger-related questions, travelers should contact United Airlines. Mesa Airlines operates regional flights under the United Express brand, while United manages the customer-facing reservation and ticketing services for these flights.
Passengers seeking assistance should keep their booking reference, ticket number, travel date, and flight details available. These details can help customer service representatives locate the reservation and explain the options available under the applicable fare rules.
Mesa Airlines is headquartered in Phoenix, Arizona, and maintains regional operating bases that support its United Express services. Its official company information identifies Houston as its largest E175 base, with Washington Dulles and Louisville also supporting its operations.
The airline's operational teams include pilots, flight attendants, maintenance professionals, dispatch personnel, and other aviation specialists. These teams support daily regional flight operations and aircraft maintenance requirements.
On November 25, 2025, Republic Airways and Mesa Air Group completed their merger. The combination brought Mesa Airlines and Republic Airways under Republic Airways Holdings Inc., creating a larger regional airline group serving major US airline partners.
Following the merger, Mesa Airlines continued its regional operations for United Airlines. The combined company also operates regional services for American Airlines and Delta Air Lines through its Republic Airways operations. Mesa's United Express services remain an important part of the group's regional network.
Mesa Airlines plays an important role in regional air transportation by connecting smaller communities with major airline hubs. Its United Express operations give passengers access to a broader network of domestic and international connections.
With its Phoenix headquarters, Embraer E175 fleet, United Airlines partnership, and position within Republic Airways Holdings, Mesa continues to support regional connectivity across the United States and nearby international markets.
The IATA code for Mesa Airlines is YV, and its ICAO code is ASH.
Mesa Airlines is not owned by United Airlines. It operates regional flights for United under the United Express brand and is part of Republic Airways Holdings.
Mesa Airlines is headquartered in Phoenix, Arizona, United States.
Mesa Airlines operates regional passenger flights for United Airlines under the United Express brand.
Passengers can generally book Mesa-operated United Express flights through United Airlines' booking channels.
Mesa Airlines' official company information lists a fleet of 60 Embraer E175 regional aircraft.
Yes. Republic Airways and Mesa Air Group completed their merger on November 25, 2025. Mesa Airlines continues as an operating regional airline within the combined company.
Passengers should check United Airlines' baggage policy and their ticket conditions for the applicable carry-on and checked baggage allowances.
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