Maybe this will help? Others are available with a google search. If she isn't switching airlines and remaining in the same terminal, I'd think she'd be o.k. http://www.airportterminalmaps.com/Denver-DEN-airport-terminal-map

It is a big airport. And if there is a storm, schedules can get out of whack with de-icing. I agree it makes a difference if she is staying in the same terminal. It is fairly new and one of the nicer airports I have been stuck in.

For whatever it's worth, DIA was in the top five worst US airports for on time departures in 2014. Yahoo travel link

If she has a smartphone perhaps there is an app that would help get her to where she needs to be?

I've been through Denver quite a bit, and it is big, but much much easier than many others, like LAX, JFK, or Atlanta. If she is staying in the same terminal, it will be a piece of cake.

There can be terrible delays due to winter weather. Is her trip soon?

I have heard horror stories about US Air and Frontier, both of whom go through Denver. I'd avoid those airlines if possible.

Thanks so much everyone. We found an alternate route through Chicago and then Houston. A bit more expensive, but she will have more time b/w flights and she is also a bit familiar with both these airports. The trip is in about 3 weeks so, yes, weather is a definite factor. So stressful thinking of her flying alone, but she's done it before and managed to problem solve her way out of tricky situations. I know she can do it, but my fingernails will be pretty short by the end of it. Thanks again!

She now has two connections? And is one through O'Hare? If so that doesn't seem like an improvement but I don't think you mentioned the amount of layover connection time for any of the flights.

3katz, yes, she would have had two connections going through Denver as well. The problem with the Denver layover was that it was only 45 minutes and she doesn't know that airport. Unfortunately, where she is going (and coming from) are both smaller centres and hard to get to making the two layovers unavoidable. It is going to be a long day of flying for her, but worth it to see her friend (and get away from our bitterly cold 6 months of winter :)

It's been awhile since I was there but I remember that you had to get on a shuttle (like a little train) to go between terminals. Forty five minutes isn't much, since that includes deplaning, finding your gate and boarding. However, if the airline suggested that connection, they must think it is realistic. Try to get a seat near the front of the plane so she can deplane quickly.

Flying has gotten more difficult. We barely made our connecting flights coming and going. So many different variables when traveling in the winter. So true to give yourself more time between flights than the airlines recommends.

When my daughter had to fly into O'Hare for her connecting flight to Wisconsin, she was told it was a 30 minute walk from one end to the other. And, her flight was indeed at the opposite end of the airport.

We were so tight on time between the flights that we asked for a ride on one of those carts! It saved us a nice amount of time.

Daisy, I know as a mom we worry. For whatever reason, worst case scenario, if she has a layover, have a list of all the airport hotels. Once, while visiting colleges with my youngest, our connecting flight was delayed due to fog. We wasted time standing on line trying to get information. Meanwhile, the place cleared out and then it became difficult getting a nearby hotel room.

Ded, what used to be realistic, doesn't seem to be the case anymore.

Is she doing just carry on? if she is make sure you know the carryon requirement for her particular airline. Measurements are getting smaller!

A good friend of mine decided to travel to Europe with a carry on, to save the baggage fee. They made her check it!

I know Denver's airport well, as we fly to it or through it often. I agree that during the Winter months, delays are more likely to happen because of the weather. But, for anyone who does travel through there on Southwest, stop for a meal at Root Down restaurant in that Southwest terminal if you can possibly manage it. It is by far the best airport restaurant we've ever eaten in. Fabulous food , well-priced, in very pretty, very comfortable restaurant overlooking a runway. The original Root Down is in Denver proper and is also fantastic.

Here's a top rated App to help with navigating an airport - this was listed as one of the top 10 travel apps for 2016 on Christopher Elliot's website today.

http://elliott.org/blog/top-10-smartphone-travel-apps-2016/?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+elliottorg+%28Elliott%29

......"GateGuru is a personal airport assistant. It has maps of the terminals at most of the world’s major airports. It has lists of the restaurants and other services available in each terminal, as well as reviews. It will also tell you where in the airport stores and services are located."

However, if the airline suggested that connection, they must think it is realistic.

Minimum connection times (MCT) are based on best case scenarios.

Lynn, I am so hungry right now, that just makes me want to fly to Denver.

Maire, that is really helpful. I will send it to her right now. It will also make me breathe a bit easier while she's travelling.

Last time she travelled alone was flying out of Paris last year. They'd had a bomb scare the week before and due to an altercation with our shuttle driver that got me completely flustered, I ended up having to say goodbye to her hastily and forgot to give her the credit card or any cash. We went to our terminal and she to hers and then I proceeded to freak out for the next 10 hours until we were re-united at the other end. Not good for the nerves at all. Turns out she had a $50 Visa prepaid for food, but if there'd been another airport emergency or anything of that nature, she wouldn't have had any cash for taxi or hotel. I will definitely not forget this time.

I've never connected at DIA, but have flown in/out several times. We had a house near Vail, so flew either to Denver or Vail. I never found Denver hard to navigate. She sounds like an experienced traveler, so would have been okay if gates not too far apart and she can hustle. Is she flying through O'Hare or Midway? DS went to college/living in Chicago for 10 years. Unless you live near O'Hare, Midway is the better option (on time, less problems).