Remember that from mid-December the goyim like to go to the “Holy Land” for xmas, and so the rates go up. Likewise for any holiday, high travel period.
I do understand and empathize with the desire for a low fare, but do put into your cheshbon the need for good security (and do NOT count on the TSA -even with their new electronic toys and heter to fondle you- to supply that good security. So… at the very least, beware of small airlines you never heard of.