For a traditional crawfish boil, the actual cooking time is short: usually 2–8 minutes once the water returns to a full boil, plus a 15–30 minute hot soak for flavor.

Quick Scoop

  • Live whole crawfish in a boil:
    • Boil 2–8 minutes after the water comes back to a rolling boil (shorter for small crawfish, longer for big ones).
* Then turn off the heat and let them soak in the seasoned water 15–30 minutes so the spice can penetrate.
  • Frozen, pre-cooked crawfish:
    • Just heat through in hot seasoned water 2–4 minutes; they are already cooked and only need warming.
  • Small crawfish vs large:
    • Some Louisiana-style guides suggest about 5 minutes for small and 8 minutes for large before soaking.

What most backyard boils do

Most popular boil methods today go like this:

  1. Bring a big pot of seasoned water to a full rolling boil.
  2. Cook potatoes, sausage, and corn first (10–15 minutes total) so they’re tender before the crawfish go in.
  1. Add live crawfish; once the water re-boils, time 2–7 minutes of active boiling.
  1. Turn off the heat and let the crawfish soak 15–30 minutes until they sink and taste as spicy as you like.

In other words, total time in the pot is often around 20–40 minutes including soaking, but the key answer to “how long does it take to cook crawfish” is that the meat itself only needs a few minutes of boiling once the water is back at a rolling boil, followed by a flavor soak to finish.

Information gathered from public forums or data available on the internet and portrayed here.