In August 2012, I went to San Francisco Airport (SFO) when I was on my way back to New York. Transit time is about 6 hours, which is from midnight to 6 AM.
Immigration checks took me about 45 minutes, from the moment I line up until I take back my luggage. The process is pretty much streamlined so you don’t have to worry much about that. Just remember to declare any sensitive item that you might have (such as food and plants).
A room for travelers to rest. Very clean and comfortable. Somewhat I think this is better than JFK restrooms.
Six hours in deserted airport was too long for me. So I went to the city (about 30 miles away) and spend the whole night there.
Malaysia Airlines, from its Facebook page, has posted an announcement about its flights to/from London. Below is the announcement:
[ALERT] FLIGHT OPERATIONS TO/FROM LONDON
Due to the current severe weather conditions across the United Kingdom, Malaysia Airlines flight operations to/from London Heathrow may be retimed.
Please check status of your flight with us at http://bit.ly/MHflightstatus or call us at toll free number 1 300 88 3000 (within Malaysia) or +603 7843 3000 (from outside Malaysia) for updates.
The weather disruption is due to the severe accumulation of snow. LANDASAN would like to advise our visitors to check with your respective airlines for rescheduling and keep yourself updated with current information.