Here's one that in any other circumstances I'd find woo but under the actual circumstances... not so much now in the cold light of day. 2 days later.
A few days ago we were stuck in Turkey due to the collapse of Thomas Cook. Luckily, being ATOL protected, we hoped that our TC flight would be replaced and sure enough it was although rather last minute. This was a night flight, Thursday night/Friday morning. The transfer had been over three hours and security at Antalya airport was extreme and prolonged, all adding to our fatigue I'm sure. We couldn't see the plane when we got on it as it was dark but I was immediately aware that it was bigger than usual (as I've only ever done short haul flights) and the decor was odd and dated, with strange, old-fashioned carpet patterned upholstery. The flight attendants wore old fashioned-type turquoise uniforms (which DP commented made them look like 70s porn stars.. both genders 
We weren't expecting our in-flight meal (which has gone with the rest of Thomas Cook's assets) but instead, we were somewhat pleasantly surprised to be provided with a snack at no extra charge.. which turned out to be strange little seeded rolls with barely any filling, pretzels and little cups of juice.
It was all a bit surreal and dated but we didn't really speak of this at 40,000 feet!! When we landed, it was light at Gatwick and the plane turned out to be a plain white jumbo jet with no logos of any kind and the words "ghost plane" went through my mind dramatically 
)
The flight operator turned out to be Hi Fly, a perfectly normally "wet lease" airline obviously hurriedly hired by the Civil Aviation Authority to get us home and we are very grateful but all in all, in our tired and slightly stressed states we all agreed the whole experience felt a little surreal and weird.