For musicians that have booked shows in other states and flown out, how do you deal with the speaker cab situation?

Hi, so I’m a musician based out of Portland OR that plans to fly out to Shreveport LA in July. We’ve got guitar speaker cabinets which are large and will be obviously too large for normal luggage and will 100% need to be bag check. Can someone give me a rough estimate of the additional cost to bring on three 4x10 speaker cabinets? Also, I think our amp heads would fit in carry on luggage along with our guitars. I’m sure these things vary by airline and size, but anyone who has done something similar, what did it look like for you? Will it cost me an arm and a leg to bring on my cabs or will it be semi-affordable? Thanks!