London LON to Calgary, AB YYC flight with Air Canada

United Airlines, established in 1926, is a major U.S. airline headquartered in Chicago, Illinois. Operating an extensive domestic and international network, United serves more destinations than any other airline, connecting travelers across six continents. The airline's eight hubs include Chicago–O'Hare, Denver, Houston–Intercontinental, Los Angeles, Newark, San Francisco, Washington–Dulles, and Guam. As a founding member of the Star Alliance, United offers a comprehensive range of services, including regional flights through United Express, catering to both leisure and business travelers. The airline is committed to sustainability, investing in sustainable aviation fuel and innovative technologies to reduce its environmental impact.

British Airways (BA) is the United Kingdom’s flag carrier airline with headquarters in London near its main hub at London Heathrow Airport (LHR). BA is the second largest UK-based airline in terms of fleet size and number of passengers carried. Known as a full-service global airline, British Airways offers year-round low fares to destinations worldwide and flies to and from centrally-located airports. Its extensive global route network includes more than 170 destinations in nearly 80 countries throughout Europe, North America, South America, Asia, Africa and Australia. syn p British Airways (BA) is the flag carrier airline of the United Kingdom with its headquarters in London near its main hub at London Heathrow Airport (LHR). Known as a full-service global airline, BA offers low fares year-round to destinations around the globe and flies to and from centrally-located airports. Its extensive global route network includes more than 170 destinations in nearly 80 countries throughout Europe, North America, South America, Asia, Africa and Australia. BA is also the second largest airline based in the UK in terms of its fleet size and number of passengers carried.

American Airlines is one of the largest airlines in the world, connecting travelers to hundreds of destinations across the United States, Latin America, Europe, Asia, and beyond. Operating from major hubs such as Dallas/Fort Worth, Miami, and Charlotte, American offers a wide range of travel options. Passengers can choose from Economy with affordable fares, Premium Economy with extra space, or Business and First Class featuring flat-bed seats, premium dining, and lounge access. With a modern fleet and membership in the oneworld alliance, American Airlines combines global reach with comfort and reliability.

Air Canada is Canada's largest airline and flag carrier, headquartered in Saint-Laurent, Quebec. Founded in 1937 as Trans-Canada Air Lines, it was renamed Air Canada in 1964 and fully privatized in 1989. As a founding member of Star Alliance, Air Canada provides scheduled passenger and cargo services to over 220 destinations across six continents. The airline operates a diverse fleet, including Airbus A320 family aircraft, Boeing 737 MAX, Boeing 777, and Boeing 787 Dreamliner for both short and long-haul routes. Air Canada also offers leisure travel packages through its subsidiary, Air Canada Vacations.

LOT Polish Airlines, legally Polskie Linie Lotnicze LOT S.A., is the flag carrier of Poland and one of the world's oldest airlines, founded in 1928. It is a founding member of IATA and joined the Star Alliance in 2003. With its main hub at Warsaw Chopin Airport, LOT serves over 97 destinations across Europe, Asia, and North America with a fleet of 87 aircraft as of June 2025. The airline is recognized for operating one of Europe's youngest fleets and was the first European operator of the Boeing 787 Dreamliner.

Condor Flugdienst GmbH, commonly known as Condor, is a German leisure airline established in 1955 and based in Neu-Isenburg, Hesse, with its main hub at Frankfurt Airport. It offers scheduled and charter flights, operating medium-haul routes to the Mediterranean Basin and the Canary Islands, as well as long-haul flights to destinations in Africa, Asia, North America, South America, and the Caribbean. Condor is recognized for its customer-centric services, providing various travel classes and in-flight amenities to enhance the passenger experience. The airline is also focused on sustainability, continually updating its fleet with more fuel-efficient aircraft.