DIA is a beautiful airport on the outside with its nice tent-like roof designed to resemble the snow-covered Rocky Mountains. On the inside, DIA is a fully functional and cavernous airport and the airport is easy to navigate. It's a little annoying to use the train, if you have to go to Concourse B or C or to reach the baggage claim. For the last few years the security staff in Denver had been really rude and inefficient, but with the recent staffing upgrades, the security lines are now much shorter and the staff is at least a little more civil. However, the new staffing upgrades in the immigration/customs areas have really helped as I was out in under an hour after my flight arrived from London Heathrow, way better than the 2 hours it took me in 2004 when I arrived from Frankfurt. The shops are pretty nice, but the restaurants are really generic. My only complaint is the airport's weird location, as the airport is about a 35 minute drive from downtown, however, this really isn't the airport's fault, as the citizens of Denver wanted the airport further away from downtown in order to reduce noise. DIA is generally very efficient, as long as it doesn't snow. However, even after all of the upgrades snow really slows down this airport. Overall, a good airport, but I wish that it had more ""local"" restaurants and the airport really needs to figure out to handle snow better.
Pros: excellent architecture, lots of parking, huge numbers of flights, staff tends to be above average
Cons: security lines can build up, sonw storms ALWAYS cause big delays
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