BUF / F9 is bringing back the MIA - BUF flights!
F9 better hope the boarders are opened by then!
That's right . Isn't border opening for general traffic an important consideration any route out of BUF/ IAG?
DL adding BUF-SLC nonstop service might be a possibility with there being a significant amount of passengers connecting to domestic destinations west of SLC from BUF (at least prior to the COVID-19 pandemic), and DL can probably make BUF-SLC nonstop service work without cross-border traffic due to the connections that are available at SLC on DL. DL is also able to operate BUF-SLC nonstop service using A220-100 planes which have fewer seats than the A319 or 737-700.
WN adding BUF-ATL nonstop service might be a possibility with WN having recently re-adding a few other former WN/FL routes out of ATL such as ATL-SDF/MEM/OKC and with FL having served ATL nonstop from BUF prior to the WN-FL merger.
UA adding nonstop service to its DEN, IAH, and SFO hubs from BUF might also be possibilities with BUF-DEN/IAH/SFO being three of the top routes that UA doesn't currently serve nonstop from BUF and with UA having added nonstop service to DEN from some other East Coast cities last year.
BUF-SLC is a pipe dream. That would overfly two hubs, one of which has pretty good service to the West Coast (MSP) and the other has decent service (DTW). Between those two hubs and ATL, that covers most major markets with a single connect. The only places that wouldn't really get you is some secondary/tertiary west coast markets, such as FAT, MFR, EUG, etc.
BUF-ATL on WN is a possibility. It wouldn't surprise me.
BUF-DEN has the same issue that SLC has. A lot of those larger places can easily be reached over ORD.
As airlines rebuild their networks, a lot of hub-overflights that you've seen added in the past few years will be the last flights to return, and double-connects between secondary cities on the coasts will be a lot more common. You're already starting to see this at DL - ATL-SLC has become their busiest market with 11x flights, mostly on a mix of 757s and 767s.