Women's UA Fly-By Leggings

Style # 1297935
Height: Size: Fit: Compression
Womens UA Fly-By Leggings
  • Availability: 
Size and Fit Guide
Due to limited quantities, only 100 allowed per customer.
The product can't be added to the bag


Height: Size: Fit: Compression
Women's UA Fly-By Leggings

Product DNA

  • Compression: Ultra-tight, second skin fit
  • Super-light HeatGear® fabric delivers superior coverage without weighing you down
  • Material wicks sweat & dries really fast
  • 4-way stretch construction moves better in every direction
  • Anti-odor technology prevents the growth of odor-causing microbes
  • Super-breathable mesh leg panels to dump excess heat
  • Wide, flat waistband
  • Secure zip storage pocket
  • Reflective logos
  • Inseam: 28.5"
  • 87% Polyester/13% Elastane
  • Imported


This is what makes our gear work harder—and smarter—than anything else out there.


The original innovation our founder dreamed up. This super-breathable fabric wicks sweat and regulates body temperature so you feel cooler, drier, and lighter than ever.

Review Summary

78 Reviews
44% of reviewers recommend


Runs small Runs large


Min. Max.


Min. Max.

UA Fly-By Leggings

Having the pocket on the side adds a little extra bulk and pulls down on that side.

My favourites!

I love this style in the full length and in the Capri. I am an everyday runner and this style is the best one for staying up and in place even on very long runs. The fit is pretty true to size, perhaps a tiny bit larger than other styles. Only negative is that the pocket doesn’t fit an iPhone 10 Max so I have to wear a running belt if I want to carry my phone. I wear a size AU12.

Slightly disappointed with new material

I already have a pair of these that I absolutely love but the new ones are a different material? They are shinier and less forgiving. I hope they adjust a little because they are pretty uncomfortable compare to the old design.

Try to try on in-person

Very helpful service, enabled me to try on in-store another Under Armour long legged similar fabric pair to get an idea of size, as they didn't have Fly By in stock. My usual size, the XS couldn't even get over my hips, and the S was too big. So I bought Fly By online in an S but they're too big...but if you can't get the XS over your hips?? I couldn't be bothered with the return process. Fly By are a great looking pair of tights though. Go for your usual size is my advice if having to buy online.


The stitching is coming apart after only a few wears. I only wear them to run in the morning for about a half hour. they are washed after each wear. The stitching on one side is all lifting. It is too bad because they fit well and I love the pocket for my phone.

Love and first but not so much

I ordered two pairs in the black. Loved the look and the fit at first but unfortunately they do sag so I constantly have to pull up. Also, for some reason some of the stiching in the same spot on both sides in the most random spot ( close to zipper pocket) came loose. I had to sew. I did enjoy the first couple of weeks of wearing these.


I've been trying very hard looking for the right fitting workout leggings.These ones were nice; Comfortable, good quality material, squat proof (not see through) but, the biggest problem (in my opinion) is the awkward, grotesque look of constantly hiking them up during workouts.

Great, comfortable product

I love these compression leggings. I usually wear a medium but I sized up to a large so I wouldn't feel like a too tight sausage when I ran. I am glad I did. They fit well and are super comfortable. I love how Under Armour makes high quality clothes that last a long time and are very comfortable and breathable.

Perfect tights!

Everything about this product is awesome! - looks great - comfortable fit that's tight in the right places - performs well (keeps me cool and dry when running and doing other exercises) - great features to store my phone (with hole for earphone cord) and keys - easy to clean and durable (I machine wash and tumble dry) Highly recommend!

Great product

love these, awesome fit and just really great product