Here is the list for U.S. fiber festivals for March and April 2018. If you know of any that I missed, please let me know! Also, I will add festivals outside of the U.S. if you just let me know. I will edit this page if I find any more festivals, too. Hope this helps!
MARCH
March 1–4, 2018: Rose City Yarn Crawl, Portland, OR
March 9–10, 2018: Jay County Fiber Arts Festival, Portland, IN
March 15–18, 2018: Knit North Yarn Crawl, Boston, MA
March 16–17, 2018: Cedarburg Spur Fiber Arts Trails Weekend, Cedarburg, WI
March 16– 18, 2018: Madison Knitters Guild Knit-In, Madison, WI
March 17, 2018: Heartland Fiberpalooza, Winterset, IA
March 18, 2018: Homespun Yarn Party, Savage, MD
March 22–24, 2018: Threaded Streams Fiber Arts Trail Weekend, Baraboo, WI
March 23-24, 2018: Carolina Fiber Fest, Raleigh NC
March 27–31, 2018: PlyAway, A spinnng retreat, Kansas City, MO
APRIL
April 5-8, 2018: DFW Fiber Fest, Irving, TX
April 5–8, 2018: Minnesota Yarn Shop Hop, Twin Cities region
April 6-7, 2018: Kinzua Knit-Away, Warren, PA
April 6 – 8, 2018: Pittsburgh Creative Arts Festival, Pittsburgh, PA
April 7-8, 2018: YarnCon, Chicago, IL
April 12–14, 2018: 18th Annual Garage Sale Textile Center, Minneapolis, MN
April 12-15, 2018: Interweave Yarn Fest, Loveland, CO
April 13-14, 2018: The Fiber Event at Greencastle, Greencastle, IN
April 14, 2018: 22nd Annual Stephenson County Fiber Art Fair, Cedarville, IL
April 14–15, 2018: Fiber Expo, Ann Arbor, MI
April 14 – 15, 2018: Allentown Fiber Festival, Allentown, PA
April 19-22, 2018: The Fourth Annual Long Island Yarn Crawl, various towns in Nassau & Suffolk counties, NY
April 20-22, 2018: Smoky Mountain Fiber Arts Festival, Townsend, TN
April 20–23, 2018 Kansas Alliance of Weavers and Spinners Conference, Manhattan, KS
April 21, 2018: The Chancellor’s Sheep and Wool Showcase, Germantown, NY
April 27–28, 2018: Pine to Prairie Fiber Arts Trail Weekend Tour, Bemidji, MN
April 27-28, 2018: Yellow Rose Fiber Producers Fiesta, Seguin, TX
April 27–29, 2018: Yarnover Minnesota Knitters Guild, Brooklyn Park, MN Click here for the brochure
April 28, 2018: Knit Michigan, Lake Orion, MI
April 28, 2018: Connecticut Sheep, Wool & Fiber Festival, Vernon, CT
April 28, 2018:Powhatan’s Festival of Fiber, Powhatan, VA
April 28–29, 2018: Indiana Fiber & Music Festival, Clarksville, IN
April 28–29, 2018: Wisconsin Alpaca & Fiber Festival, West Bend, WI
Thatched Roof Cottage 