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https://patch.com/california/unioncity/calendar/event/20250222/742b049d-d96e-4a72-8093-98e24b813653/rontier-airlines-what-days-are-frontier-flights-cheapest

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https://patch.com/california/unioncity/calendar/event/20250222/742b049d-d96e-4a72-8093-98e24b813653/rontier-airlines-what-days-are-frontier-flights-cheapest