Originally Posted by
aviators99
They are BOTH terrible in IRROPS. And since (as mentioned above) it's not a hub for DL, their options are limited anyway during IRROPS. However, BOS is a hub (focus city?) for B6, so they would probably perform better in case of mechanical outbound. I would base it on comfort, unless you are trying to gain status on one or the other.
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.