Flying Ants in Calgary: What’s Actually Happening (And Should You Be Worried?)

It’s a fine day in Calgary. You walk outside, everything seems completely normal, and then… wings. 

Little winged things crawling on the patio, buzzing around your head, landing on your arms while you stand there trying to figure out what exactly you were looking at and whether you should be concerned.

Photo credits to pexels.com

This isn’t a new phenomenon. Calgary gets this almost every year, and every year it sends a good portion of the city into a quiet panic.

Hear us out. Put the spray can down, close the back door, take a breath, and let’s talk through what’s actually going on.

Not an Invasion but a Date

Flying ants aren’t an unknown, mysterious species. They’re regular ants, specifically the reproductive males and virgin queens from established colonies. They grow wings once a year for one single purpose: finding a mate.

This “nuptial flight” happens when conditions align just right, usually warm temperatures and humid air, often right after a stretch of rain in late summer. When those conditions hit, every colony in the area gets the same signal at the same time and sends its reproductive ants into the air simultaneously. 

This is completely normal and exactly what you’d expect to see this time of year. Colonies get large enough to produce reproductive ants, conditions get right, and off they go. The whole event is over in a day or two. 

The male ants die shortly after mating, the mated females shed their wings, land, and go looking for somewhere quiet to start a new colony.

Should You Actually Be Worried?

Mostly no. But there’s one important distinction worth making.

If the flying ants are outside, you’re fine. They’re harmless, they don’t sting, they’re not interested in you, and they’re not signalling anything wrong with your yard. You don’t need to treat anything, spray anything, or do anything at all except maybe stay inside for the afternoon if you find them annoying. Give it a day or two and they’ll be gone for the year.

If the flying ants are coming from inside your home, pay attention. This is where the answer changes. If you’re seeing them emerging from a wall, a window frame, a floor junction, or anywhere else inside the structure, that’s worth taking seriously.

What it usually means is that there’s an established ant colony somewhere in or very close to your home, and the reproductive ants are trying to swarm outward from it. 

If you’re in that situation, note where the ants are coming from and get a professional assessment before the season wraps up. Ignoring it doesn’t make it go away.

What You’re Actually Looking At in Calgary

Photo credits to pexels.com

Two species are worth knowing about:

Carpenter ants are the most common. They are the big ones, the ones that make people genuinely alarmed because of their size. Outdoors, they’re harmless. Indoors, they warrant a closer look.

Pavement ants also swarm in Calgary but are considerably smaller and far less dramatic. They’re sometimes mistaken for termites, especially when they sprout wings. 

By the way, termites are not an established pest in Alberta. If you’ve seen flying insects in Calgary and you’re worried about termites, you can take that off the list.

Here’s what our outdoor ant and insect treatment actually looks like on a Calgary property:

What to Do When the Flying Ants Swarm

If the swarm is outdoors…

• Leave them alone. They’ll be gone in a day or two and won’t be back until next year
• A jet of water from the hose will move them off a specific surface if you need to use the patio.
• No spray, no treatment, no action required. You’d be responding to a one-day event with something that takes weeks to be effective.

If you’re seeing them indoors…

• Don’t spray the spot where they’re emerging since it won’t address the colony and just makes the workers scatter temporarily.
• Take a photo of where they’re coming from and note the location for the technician. 
• Get a professional outdoor assessment before the season ends. Carpenter ant colonies found in late summer have been growing since spring and need proper outdoor treatment, not a temporary fix

Dealing with Flying Ants in Calgary

Flying ants outside are just nature doing its thing, right on schedule, and gone in a day or two.

Flying ants coming from inside your home are worth a proper look before the season winds down. If that’s you, don’t wait until spring to deal with it.

Our Buzz Boss packages are designed to provide you with flexible options to address your pest control needs. 

Buzz Boss Insect covers you right now through to September 30th. Ants, mosquitoes, wasps and hornets, ticks, and spiders, all handled outdoors so you can actually use your yard through the back half of summer without thinking about it. That’s the right option if you want protection for what’s left of the season.

If you’re thinking of the bigger picture, the BuzzShield System is Buzz Boss’s year-round complete pest control solution. The full outdoor picture is handled across the whole year, so you’re not making a new decision every time something shows up.