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DIY Pennant Flag Bunting

September 19, 2026 by jenni Leave a Comment

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Create lasting memories with an heirloom party decoration that will adorn your celebrations again and again. Ready for a simple DIY? Let’s make a reusable pennant flag bunting! This classic celebration staple is perfect for all kinds of events, from birthdays to baby showers and everything in between.

Woman in grey suede clogs, a grey hooded sweatshirt and light wash denim shorts holding a colorful pennant flag bunting. Overlay text reading "pennant flag bunting DIY" and "www.anexcitingday.com".

Choosing party decorations can be overwhelming! Of course you want your event to look aesthetically pleasing. But you may not want to break-the-bank for a “Pinterest Perfect” party every time you host. Then come the intrusive thoughts: “Am I doing too much or too little?” and “Will these decorations last beyond one event?”

Instead of reinventing the wheel for every occasion, create a signature decor style you can use again and again. One way to accomplish this goal is with heirloom decorations that will stand the test of time. A fabric pennant flag bunting is a great piece to have in your party planning arsenal!

Even casual gatherings can feel more special with reusable party decor, like a fabric bunting. Create a variety of pennant flag buntings for your store, and you’ll have options for every theme. Keep reading for all the details on how to sew your own pennant flag bunting.

There is a supply list at the end of this post that sources the exact items I used, if still available. Also included are the closest substitutes I could find online.

Colorful pennant flag bunting with red, orange stripe, yellow floral, green print, green floral, and blue floral fabrics strung above a pine wood floor. Overlay text reads "diy pennant flag bunting: and "www.anexcitingday.com".
Sewing project scene with stacks of fabric triangles in tan plaid and camping prints, with an iron pressing on one piece of plaid fabric. Overlay text reads "diy pennant flag bunting: and "www.anexcitingday.com".
Sewing project scene with stacks of fabric triangles in orange stripe, yellow floral and camping prints, with white bias tape near the triangle shaped fabric pieces and a pin cushion shaped like a tomato. Overlay text reads "diy pennant flag bunting: and "www.anexcitingday.com".

Related Posts:
– DIY Toadstool Backdrop with Door
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Note: This post contains affiliate links, which means I make a small commission at no extra cost to you. I’m not a professional seamstress and don’t claim to be an expert on the topics discussed in this blog post. I’m simply sharing my experience for anyone interested in trying out this craft. See my full disclosure here.


DIY Pennant Flag Bunting

Step 1 – Squares and Triangles

Start by laying out your fabric and planning your cuts. The goal is to get as many 8 inch by 8 inch squares from your fabric as possible. Once you have a plan, proceed to cut your 8 inch squares.

Sewing project scene with tan plaid fabric spread atop a desk with a measuring tape across the fabric and fabric shears pointing at "8 inches" on the measuring tape. Overlay text reads "diy pennant flag bunting: and "www.anexcitingday.com".

Fold the squares diagonally to form a triangle with right sides (pretty sides) together. Sew along one side of the matched up cut edges. You should now have a “cone” shape if you were to open the pocket you created. Trim excess threads and, optionally, trim the seam allowance at a diagonal where the sewn edge meets the fold. This will help keep your pennant flag tips pointy later.

Stacks of fabric squares in a variety of colors with blue on top and a measuring tape showing the square is 8 inches across. Overlay text reads "diy pennant flag bunting: and "www.anexcitingday.com".
Sewing project scene with yellow floral fabric in a triangle shape passing through a sewing machine. Overlay text reads "diy pennant flag bunting: and "www.anexcitingday.com".

Step 2 – Reveal the Pennant Flag

Turn the triangle right side out, then use a dull object, like a bone folder, to push out the tip. Lay your fabric flat on the table in a “kite” shape with the seam running down the center. On an ironing board or other heat-safe surface, iron your “kite” shape flat. Trim the excess triangle at the kite’s top, where the wrong side of the fabric shows. Turn over your sewn triangle to reveal a perfect pennant flag with the seam in the back!

Seven stacks of sewn fabric, each a different color of the rainbow, in the shape of kites all arranged with their points angled at a center point of a circle atop a desk. Overlay text reads "diy pennant flag bunting: and "www.anexcitingday.com".
Sewing project scene with stacks of different printed fabrics spread across a table and fabric shears angled between two pieces of fabric as if it had just cut a triangle off the other piece of fabric. Overlay text reads "diy pennant flag bunting: and "www.anexcitingday.com".

Step 3 – Bias Tape for your Bunting

Measure your bias tape, leaving 15–20 inches of extra length on each end for ties. Space each pennant flag as closely or widely as you prefer. I spaced mine about 2–3 inches apart. The number of flags per bunting can also vary based on your design. I’ve made buntings with both 7 and 11 flags. Personally, I prefer 7 flags and plan to tie multiple buntings together for a longer banner. Feel free to create as large or small of a banner as you like!

Now, this next step may seem excessive, but it saves time at the sewing machine and pays off in the end. Slip the pennant’s raw edge between the bias tape folds. Then pin or clip the corners in place. This will help keep everything in place as you sew.

Sewing project scene with stacks of fabric triangles in orange stripe, yellow floral and camping prints, with white bias tape near the triangle shaped fabric pieces and a pin cushion shaped like a tomato. Overlay text reads "diy pennant flag bunting: and "www.anexcitingday.com".

Stitch along the bias tape, either down the center or as close to the flag-side edge as your machine allows. I backstitched at the beginning and end of each flag for extra stability, though this may be optional. I also stitched across the ends of the bias tape for a finished look, but this step isn’t required.

Enjoy your finished pennant flag bunting!

Colorful pennant flag bunting with red, orange stripe, yellow floral, green print, green floral, and blue floral fabrics strung in front of a white textured wall. Overlay text reads "diy pennant flag bunting: and "www.anexcitingday.com".

Supply List

A Note About Fabric

Most of my fabrics were sourced from my mom’s fabric cabinet (Thanks, mom!) and she sourced most of her collection from garage sales and thrift stores. I would highly recommend using 100% cotton for your pennant flags. My first bunting combined cotton and flannel, which worked well overall. However, the cotton pennant flags had crisper edges and were easier to sew onto the bias tape. Prewash all your fabrics prior to sewing if possible to prevent any misshapen flags down the line.

A Note About Bias Tape

The bias tape from my first bunting was sourced from Walmart in a pre-cut pack. It worked great and is perfect for shorter buntings. But if you get bit by the bunting-bug like me, you will want a larger spool of bias tape so as to not limit your length by the pre-cut packs.

List of Supplies w/ Links

– Fabric Squares
– Bias Tape
– Pins or Clips
– Iron
– Sewing Machine
– Thread
– Fabric Scissors or Rotary Cutter
– Cutting Board
– Straight Edge
– Measuring Tape
– Bobbin
– Bone Folder

Sewing project scene with stacks of triangle shaped fabric pieces and white bias tape packs. Overlay text reads "diy pennant flag bunting: and "www.anexcitingday.com".

Conclusion

I hope there is something you were able to take away from this DIY Pennant Flag Bunting blog post. Remember to Pin this post for when you are ready for next steps.

Woman in grey suede clogs, a grey hooded sweatshirt and light wash denim shorts holding a colorful pennant flag bunting in front of her. Overlay text reading "pennant flag bunting DIY" and "www.anexcitingday.com".

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Filed Under: DIY Tutorials, Host At Home Tagged With: diy, event decor, sewing

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Today is an exciting day!  So glad you found our blog.  I’m Jenni, wife and mama, events professional and lover of all things wedding.  Follow along for stories on real weddings, event tips, diy projects, and more!  Read more about me here.

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