Originally Posted by
Traveler_boy_25
I have only had wonderful experiences during IRROPS with DL, as they always give you the option to choose another flight for free on the app and they automatically rebook and take care of their medallion members. Also, DL has a much larger operation in ORD going to 10 cities with multiple flights a day while B6 goes to 3 cities. SO, if IRROPS were to occur, it would be easier to get out on DL vs. B6. Also, BOS is also a hub for DL as well, so they do perform very well in that city. Personally, I'd rather get to my destination on time and have 1 inch less of legroom.
BOS is marketed as a hub for DL, but they don't really base many planes here, and their operations are split between a lot of express carriers. So I'm not sure it has an *operational* advantage from that perspective.
Coming from ORD specifically, though, the fact that DL has a ton of flights to nearby DTW and MSP every day does give them more 1-stop options to get you home.
Both DL and B6 are usually pretty slow to cancel flights, which I think gives them both an advantage over AA or UA in many cases.