What you need before you start

A bomber jacket is a structured garment with fitted cuffs, a collar, and a front zipper, so you will need a pattern sized to your measurements, fabric suitable for outerwear (cotton twill, canvas, or a quilted blend work well), and a separating zipper long enough for the front opening. You will also need thread that matches your fabric, elastic for the cuffs and hem, a sewing machine that can handle medium-weight fabric, and basic tools: scissors, pins, a measuring tape, and a seam ripper for mistakes.

Before you buy fabric, print and cut out your pattern pieces on paper, then lay them on yourself or a fitted garment you own to confirm the size is right. Bomber jackets sit close to the body, so an inch too large in the chest will be noticeable. Most patterns come with a size chart; use your actual chest measurement, not a guess.

Wash and dry your fabric before cutting if the pattern recommends it—most cotton and cotton blends will shrink slightly. Lay the fabric flat on a clean table, smooth out wrinkles, and weight down the pattern pieces with pins or pattern weights so they do not shift while you cut.

Key Takeaways

  • Cut all pattern pieces on grain and mark notches, darts, and zipper placement with tailor's chalk or a fabric pen before you remove the pattern.
  • Sew the shoulder seams and side seams first, then attach the collar and insert the zipper before you add the cuffs and hem.
  • Use a ballpoint needle on your machine if your fabric is knit or has stretch; use a universal needle for woven fabrics like twill or canvas.
  • Elastic in the cuffs and hem keeps the jacket fitted; measure the circumference of your wrist and the jacket hem, then cut elastic about one inch shorter than that measurement.
  • Press seams open as you go, and try the jacket on at the collar and zipper stage so you can adjust fit before the cuffs are sewn.

Cutting and marking your pieces

Lay each pattern piece on your fabric following the grain line marked on the pattern—this matters because fabric has a direction, and cutting against the grain will make the jacket hang unevenly. Pin the pattern to the fabric, then cut slowly and steadily with sharp scissors or a rotary cutter. Do not lift the scissors between cuts; this causes the blade to slip and creates jagged edges.

Once you have cut all pieces, mark the notches (small cuts at seam intersections), darts, and zipper placement using tailor's chalk or a fabric pen. These marks tell you where pieces fit together. If your pattern includes a notch, cut a small V into the seam allowance rather than the fabric itself—this is your alignment guide when you sew.

Transfer any dart markings to the wrong side of the fabric using a tracing wheel and carbon paper, or fold the fabric along the dart line and mark with chalk. Darts shape the jacket at the back and front, so accuracy here affects how well it fits your shoulders and chest.

Sewing the main seams and darts

Start by sewing any darts marked on the front and back panels. Fold the fabric with right sides together along the dart line, pin, and sew from the wide end to the point, tapering to nothing at the tip. Backstitch at the start and end. Press the dart to one side (usually toward the center of the jacket) on the wrong side.

Next, sew the shoulder seams. Pin the front and back panels with right sides together, matching the notches at the shoulders. Sew with a straight stitch using a 5/8-inch seam allowance (the standard for garment sewing). Backstitch at the start and end, then press the seam open on the wrong side using a pressing ham or rolled towel under the seam to avoid flattening the fabric.

Sew the side seams the same way: pin with right sides together, sew, and press open. Try the jacket on inside-out at this stage. The shoulders should sit at the edge of your shoulder bone, and the side seams should run straight down from your armpit. If the fit is off, you can still adjust by taking in or letting out the side seams before you attach the sleeves.

Attaching the collar and inserting the zipper

Most bomber jackets have a knit collar (often ribbed) that you sew to the neckline. Pin the collar to the neck opening with right sides together, matching the center back of the collar to the center back of the jacket. The collar will be slightly shorter than the neckline, so ease it gently as you pin. Sew with a 5/8-inch seam allowance, then press the seam toward the collar on the wrong side.

Fold the collar up and press it flat so the seam is hidden inside. Topstitch (sew on the right side) about 1/4 inch below the seam to hold the collar in place and create a finished look. This topstitching is visible, so keep your line straight and your tension even.

Insert the zipper next, while the jacket is still flat. Pin the zipper to the front opening with the zipper pull facing the right side of the fabric, matching the top of the zipper to the collar seam. Use a zipper foot on your machine (a special presser foot that lets you sew close to the zipper teeth) and sew slowly. Sew one side of the zipper, then flip the jacket and sew the other side. The two sides should meet in the middle with no gap.

Adding sleeves and armhole binding

Pin the sleeve cap (the curved top of the sleeve) to the armhole with right sides together. The sleeve will be slightly larger than the armhole, so ease it in gently as you pin, distributing the extra fabric evenly around the curve. Sew with a 5/8-inch seam allowance, then try the jacket on to check the sleeve length and position.

If the sleeve length is right, sew the underarm seam (the seam that runs from your wrist to your armpit) with right sides together. Press this seam open. If your pattern includes armhole binding (a strip of fabric that finishes the armhole edge), pin it to the armhole with right sides together and sew, then fold it to the inside and topstitch it down by hand or machine.

Many bomber jackets skip binding and instead finish the armhole with a narrow zigzag stitch on a serger, or by folding the seam allowance to the inside and topstitching it. Check your pattern to see which method it calls for.

Sewing the cuffs and hem with elastic

Measure around your wrist and around the jacket hem at the bottom. Cut elastic about one inch shorter than each measurement—this creates the fitted look that defines a bomber jacket. Divide the elastic and the cuff opening into four equal parts and mark with pins.

Pin the elastic to the wrong side of the cuff opening, matching the marks. Stretch the elastic as you pin so it lies flat against the fabric. Sew with a zigzag stitch or a stretch stitch on your machine, stretching the elastic as you sew so it stays flat. This allows the cuff to stretch when you pull the jacket on and off.

Fold the cuff to the right side and press. Topstitch about 1/4 inch from the fold to hold the elastic in place and create a finished edge. Repeat this process for the hem at the bottom of the jacket. Try the jacket on before you sew the hem permanently—the length should hit at your hip bone or just below.

Final pressing and finishing touches

Press the entire jacket on the wrong side using a pressing cloth (a thin cotton cloth that protects the fabric from the iron). Pay special attention to seams, the collar, and the zipper area. A well-pressed jacket looks professional and hangs properly.

Check all seams for loose threads and trim them with scissors. If you used a serger to finish seams, check that all raw edges are covered. Sew any loose buttons or snaps if your pattern includes them. Try the jacket on one final time to confirm the fit, sleeve length, and hem are all correct.

If you notice puckering along the zipper or collar, try pressing again with a bit of steam. If seams are puckered, you may need to adjust your machine tension or use a different needle size on your next project—this is a common issue and improves with practice.

Frequently Asked Questions

What fabric weight should I use for a bomber jacket?

Medium-weight fabrics work best: cotton twill, canvas, or a quilted cotton blend. These hold their shape and create the structured look of a bomber. Avoid lightweight cotton or linen, which will not hold the fitted cuffs and collar properly. If you want a lighter jacket, look for a pattern labeled "unlined bomber" and use a cotton poplin or a cotton-linen blend.

Can I sew a bomber jacket without a serger?

Yes. A serger finishes raw edges neatly, but you can finish seams on a regular sewing machine using a narrow zigzag stitch, or by folding the seam allowance to the inside and topstitching it. The jacket will look just as good; it will straightforward take a bit longer. Make sure your regular machine has a zigzag stitch option.

How do I know if the collar is sewn on straight?

The collar should sit evenly around the neckline with no twists or bunches. Before you sew it permanently, pin it all the way around and try the jacket on inside-out. The collar should feel comfortable and lie flat against your neck. If it twists, unpin and repin until it sits right, then sew.

What if the zipper is too long or too short?

If the zipper is too long, you can shorten it by sewing a bar across the zipper tape above where you want it to end, then cutting off the excess. If it is too short, you will need to buy a longer one and start over—there is no way to lengthen a zipper. Always measure your front opening before you buy the zipper.

How tight should the elastic be in the cuffs?

The elastic should be snug enough that the cuff does not slip down your wrist, but loose enough that you can pull the jacket on and off without struggling. When you sew the elastic, cut it one inch shorter than the cuff opening—this creates the right amount of stretch. If the cuff is too tight after you finish, you can carefully cut the topstitching, remove the elastic, and replace it with a longer piece.