Get to the airport, takes about 1 hour (drive 60k or 40 miles). If you don’t have a car - even longer.
You arrive in advance, security, luggage check in then boarding, then runway.
It’s been around 3 hours so far.
Now you fly for 50 to 70 minutes and it doesn’t include the plane driving through airport after landing.
Get off, grab you luggage - another 40 minutes easily. 15 if you’re lucky.
Now you need to get to the city, so it is 2 hours by car through Moscow traffic or 1 hour using “aero express” train.
The thing is, once you get off this “aero express” train, chances are it is still about one hour trip on subway to the office/apartment.
I used to fly like that, I was leaving my parents apartment at about 4-30am to arrive by 10/11am.
Compare it to train - it takes 13 hours but it leaves from the city centre, no security check in’s no nothing, you take 30 minutes to arrive there. It leaves at 6-30pm, you have supper and sleep. 7-30am BOOM you’re in the center of Moscow right next to subway station. Brush you’re teeth during approach, have your breakfast and off you pop.
It feels muuuuch better on the train. Air travel overhead is just too big - 5 hours or something for hour of the flight time. With train you have about two hours of overhead.
The only thing it is almost twice as expensive compared to air travel