For the first time in 20 years of skiing destination trips, I had a new-to-me experience before my flight with JetBlue from SLC a couple days ago --
-- do you pay baggage fees?
The only times I've recently paid baggage fees is flying to/from Calgary to go to Mustang. Last trip there was on Alaska where I get a free bag (and annual $99 companion flight) from credit card and had to pay $50? for 2nd bag. Return was on Delta and I had to pay $70 or $80 total for both. No problem that one was under 50 lb. roller ski bag with two pairs of skis and some clothing (for padding). Boots, helmet, googles and gloves go in carryon boot bag/backpack.
I think some of your problem is flying low-cost US airline that start with cheap fare, then try to add-on as much as they can. Besides JetBlue, this includes Allegiant, and Frontier and Spirit (who tried to merge earlier this year). I try to avoid legacy US carriers like American and United who too often seem to not care how badly their customers are treated. Going to/from SLC, I fly Southwest who has non-stops from SJC for +/-$100, gives one year credit for cancellation and allows two free bags. Even better my wife has enough points that when we use those and cancel, points get returned.
The last time I can remember paying for bags we were flying Ryan Air from Girona to Ibiza where I think bag was $10 and reservation fee and flight were $5 each (2008). My wife has to scramble to lighten her checked bag that was over low weight limit. I don't remember if it was 10 Kg or 25 lbs, but it was low.
We spent most of this Oct. in Spain and Portugal and only had carry-ons to speed getting out of airports and to be able to fit in rental cars. We mostly stayed in AirBnbs, always booking ones with washer/dryer. We found much smaller laundry units than at home, usually combination washer/dryers that were hard to figure out. One place only had a clothesline.
Friends flew same SFO-BCN redeye as us. Our flight was $363 while theirs was $416. They booked through Iberia while we booked through flylevel who operated the flight. You could also book through Vueling for $363. Friends could have checked a bag and they got a meal that my friend slept through as he found an empty row and slept through it.
The more interesting flights were on TAP where carryon limit was 8 Kg (17.6 lbs) and personal item was supposed to be limited to 2 Kg (4.4 lbs). At check-in for Alicante-LIS flight, they weighed my friend's wife's large carryon and it was too heavy so she had to move weight to backpack. They did not enforce 4.4 lb limit on personal item, but they did not complete check-in. After looking for 10-15 minutes for boarding pass, they returned to check-in for it. For LIS-SFO flight, we checked in at kiosk since my carry-on was 1 lb over and my wife's was about 4 over. No problem except my wife got ahead of me boarding and hurt her finger and tendon extending into arm putting her bag overhead. Surprisingly to us, TAP gave us a decent meal and a snack before landing and free wine.