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I am able to get into the Frontier airlines website and log into my account. But when I try to book a flight, the web site just spins. What is blocking?

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Is there some setting in Firefox that is preventing me from completing a flight reservation with Frontier Airlines? I am able to complete flight reservations on all other airlines.

Is there some setting in Firefox that is preventing me from completing a flight reservation with Frontier Airlines? I am able to complete flight reservations on all other airlines.

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What A/V or firewall do you have installed and what Addons is there. And the site link so others can test to see if it happens to them as well.