A disgruntled B.C. bride has filed a national class-action lawsuit against Air Transat for ruining her wedding by allegedly misrepresenting flights as non-stop.

Vancouver law firm Rosenberg Kosakoski LLP said Wednesday it has launched the claim against the airline operated by Montreal-based tour company Transat A.T.

The claim alleges the airline fraudulently misrepresented its efforts that were designed to increase ticket prices and reduce costs by using "sub-standard aircraft."

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The law firm says Air Transat advertised direct flights that typically garner higher prices. However, the aircraft ultimately made stops that were not disclosed to passengers until the plane was airborne.

The class action was filed in the British Columbia Supreme Court by Jessica Spencer, a 33-year-old accountant from Victoria, on behalf of herself and other passengers who were misled.

Spencer claims Air Transat's actions ruined her dream destination wedding.

The lawsuit hasn't been tested in court.

Transat couldn't be immediately reached for comment.

The class-action suit comes as the Canadian Transportation Agency held a hearing Wednesday about passengers being trapped for hours aboard two Air Transat jets earlier this summer in sweltering heat with a lack of water and facing the stench of vomit in the cabin.

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Christophe Hennebelle, the airline's vice-president of corporate affairs, offered an apology to passengers, saying the hearings showed the complexity of the situation on July 31.

Both planes were originally bound for Montreal – one from Brussels, the other from Rome – but were forced to divert to Ottawa due to weather conditions. They were among about 20 other planes that couldn't land in Montreal or Toronto during a two-hour window.