VS5 March 2026 - Aircraft Type Confusion (A333 or A339?)

Hi all, first time poster here and looking for some advice about our LHR>MIA VS5 20/03/2026 10am.
We are flying out to hop on BL, and decided to bite the bullet and book UC for the first time. From what I’ve seen this route is typically operated on the A339neo, right up until the day we fly where it changes to an A333.
I’m a bit confused as the seat map shows a A333 config, but the VS6 ( which lands around 7am) is scheduled to be on the A339. I’d have thought that aircraft would be turned around for the 10am VS5. For comparison VS118 is showing as an A333, and doesn’t land in LHR until 11:30am. Then VS117 departing at 2:20pm shows as the A339.
I’m hoping this might just be a scheduling quirk and may be updated in the future? Curious what others think about this and if there’s any tips for dates to check the layout so we can rebook our seats next to each other should the layout change? I have my fingers crossed we get to experience the new UC layout as opposed to the ‘coffin’.
TIA!
We are flying out to hop on BL, and decided to bite the bullet and book UC for the first time. From what I’ve seen this route is typically operated on the A339neo, right up until the day we fly where it changes to an A333.
I’m a bit confused as the seat map shows a A333 config, but the VS6 ( which lands around 7am) is scheduled to be on the A339. I’d have thought that aircraft would be turned around for the 10am VS5. For comparison VS118 is showing as an A333, and doesn’t land in LHR until 11:30am. Then VS117 departing at 2:20pm shows as the A339.
I’m hoping this might just be a scheduling quirk and may be updated in the future? Curious what others think about this and if there’s any tips for dates to check the layout so we can rebook our seats next to each other should the layout change? I have my fingers crossed we get to experience the new UC layout as opposed to the ‘coffin’.
TIA!