Does anyone know the “N” number of the planes they took?
All the images I've been able to find, it appears photographers weren't allowed that close.
I did find an article with some plane info: Texas Democrats Skip Special Session & Fly on Private Plane to DC
A coalition of members of the Texas state House boarded private planes purportedly owned by Philippe Khalil Ziade, a Lebanese-American entrepreneur and honorary consul of Lebanon in Nevada, according to Texas State Representative Briscoe Cain (R-Deer Park). Ziade is the founder and chairman of Las Vegas based Growth Holdings and is highly engaged in Lebanese politics and other ex-pat affairs, according to the Republican lawmaker. Cain provided KPRC Radio with flight logs from Austin-Bergstrom International Airport to confirm the claim. The flight logs list an airplane tail number, a code unique to a single aircraft supposedly associated with Ziade, according to Cain.
I believe the planes flew into Dulles.
Hopefully that'll help with what you're looking for.