​​​​​​While I can't answer for OP, I will say that as a typically risk-adverse individual, I would tend to opt for the train-metro-Aeroexpress option, since even a severe snowstorm isn't usually going to throw those three off schedule like it could a flight. If a potential misconnect wasn't a huge deal, yeah, flight all day for simplicity's sake. But when connecting on two separate tickets... yeah, that could be a concern.

Having said that, given that it is the LED-SVO route we're talking about here, with a flight every hour almost, even I would usually be pretty comfortable taking the flight instead of the train. And I love the train, for the record.

It's quite the experience nonetheless, particularly for Russians who are usually accustomed to the open plan sleepers etc.

Taxis aren't usually that expensive. I live south of the centre of Moscow (not too far from the centre) and the most I've ever paid from SVO, DME or VKO is just under 1300rub. Uusually it's around 900-1000rub so pricing isn't the issue but traffic can be. Aeroexpress is extremely reliable and half the price of a taxi.

I have more faith in SU operating LED-SVO in an on time and in a reliable manner than I do any US airline operating the New York - Boston - Washington Shuttle or the LA - SFO shuttle. I say SU ( not Rossiya or the rest). In the worst of weather, when I was sure it would cancel, the flights have operated like clockwork.That's saying a lot.

DL will delay a flight at the slightest sight of clouds and winds, that may cause them to burn 1/2 or more lbs fuel than they planned for. I've seen in countless times.

The only way I would take the train is if I was staying near the Leningrad station and had to be near the Moscow station , in the morning during rush hour. That sort of makes sense. But if you are already at SVO and you want to trek down to take the train, :rolleyes: , unless its you are a train geek and its a thing.