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I more often than not don't really care about travel times, I would happily seek out the cheapest time within a 2-3 month period.
All the online sites I come across give you the option to select a date with a variation of -7/+7 days.
I would like to know if there is a site that will just find me the cheapest prices but that is more relaxed on the date.
I am from the UK, any specific sites are preferred.