It would be wrong of me to suggest that the prospects are anything but very poor,
barliman is quite correct it depends where you are.
I see musicians on the gigging circuit making nothing. I see some making a little. we are talking about local bands and bands on european tours.
I see busking musicians making nothing but a few dollars a week only, I see busking musicians not even covering their travel expenses.
A few months ago I got some work as a session musician for a local band who were cutting a track in the studio for an upcoming album and made almost nothing.
I have done some film work and that was disappointing and not worth my time, but we do this for networking and career opportunities, it aint just for money.
The scuttlebutt is that there is money to be made, but when I challenge the people who claim there is work they usually come up empty handed.
I have appeared on stage several times and never been paid anything for it.
I have sat in with several brass bands and that has always been disappointing.
I think you need to do some research, cultivate connections with bands, do some networking.
Lockdown killed everything and it still has not recovered.
My saddest moment was seeing a major star with an entourage with no gigs and looking lost. How the mighty have fallen during lockdown.
There are no real audiences around most of the time the audiences have dwindled away to almost nothing.
You need to be in an established band to get work whether that be brass, jazz, blues, ska, big band, or orchestra.
Small ensembles do get work for weddings and some promotions but I wouldnt hold out much hope there.
I would point you in the direction of jazz pop funk ska and motown bands. But often they have to travel widely to get work.
Get yourself to jazz/blues clubs and venues and make some contacts there. They often advertise the acts and genres in advance so you can plan which days to turn up. They often also do jam nights so you can sit in and be recognised.
Walk in holding your instrument that will be your calling card.
I am thinking that my comments so far will sound very familiar to you in your home town. Music is everywhere so the problems will be the same everywhere.
I was invited a few times to sit in with a couple of jazz bands based solely upon their seeing me carrying my instrument under my arm, but that is very rare.
Research the cities you will visit on the internet before you go and check out the websites of local music venues and bars, many have closed down, I recently visited a night spot for a jam night and they had closed down without pulling the adverts. Dont make that mistake.
Make some contacts and some arrangements.
We make our own success in this world but this will take a lot of effort. I wish you well with it.
As for travelling, I have travelled across europe and managed to take trumpets and cornets in the under seat storage in the aircraft cabin. Cornets fit in the smallest bags allowed in the cheapest airline cabins. And a good cornet will help you sound great when you get there.
If you are going to put yourself in the position of gigging you might as well sound great and a have a ball doing it.