These are not exactly collections (nor specifically for travel) but my discoveries this past year or so are the 7/8 length summer-weight leggings from 32-Degrees, currently only in stock in XXL in black and taupe-gray:
https://www.32degrees.com/products/womens-active-7-8-legging?
Hoping for some new colors in the spring.
For winter I lucked onto some 7/8 length brushed fabric Danskin leggings on eBay.
Then for spring or fall, look into PopFit leggings -- they come in full length, ankle-pants, or "capri" length. I get them on eBay as well, and most sellers do not differentiate between full length and ankle or 7/8 length. You might want to buy from PopFit themselves.
FWIW, all of these options have hip or thigh phone pockets!