3 airlines are bringing 787 Dreamliners to MIA this week. AA brought one in on Monday for familiarization purposes. British Airways is operating a cargo-only MIA-LHR flight several times a week with a 787-8. Avianca has started operating cargo flights with their 787s this week as well.
Aeromexico did as well.
Interestingly, the 787 has been out for what, over 10 years...but yet, there aren't a whole lot @ MIA. I wonder why?
We used to get a decent amount. 787 operators that immediately come to mind are Air Europa, LATAM, LOT, Norwegian, Royal Air Maroc, TUI, and Virgin Atlantic. The Dreamliner will be a more common sight here now that AA is preparing to start operations with it.
I think it just has to do with the fleets of the airlines that fly here. The A330 was definitely the most popular aircraft for European and South American operators at MIA: Aer Lingus, Aeroflot, Aerolineas Argentinas, Alitalia, Avianca, Corsair, Eurowings, Finnair, Iberia, KLM, SAS, Swiss, TAP, and Virgin Atlantic all flew them. Of these, only Avianca and Virgin also had the 787 in their fleets, and Virgin alternated between the 787 and A330 depending on the time of year.
The only other European 787 operators that fly to MIA are Air France and British Airways, and in both cases demand warranted larger aircraft like the 777, 747, or A380.
The opposite was true with Aeromexico which typically only flew 2 737s a day on MIA-MEX before the pandemic started.