> If you really, really want to avoid an aircraft type, you book with an airline that simply doesn't fly them.

How do you do that? And which companies does not have these today?

> How do you do that?

By choosing to spend your money elsewhere.

> And which companies does not have these today?

- JetBlue, Frontier Airlines, Spirit Airlines, Volaris, Breeze Airways

- easyJet, Wizz Air, Vueling, ITA Airways, IndiGo, AirAsia, Cebu Pacific, Air Arabia

- Middle East Airlines, Tunisair, flynas

All of the above have no Boeing aircraft in their fleet at all.

Emirates doesn't fly the 737, but does fly Boeing aircraft.

About half of airlines prefer Airbus planes, and it's pretty rare to have a mix of Boeing and Airbus AIUI.