Scientific Anglers Fly Lines | Innovative Fly Fishing Performance

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Winding river through a mountainous landscape

Scientific Anglers Fly Lines

Scientific Anglers Fly Lines have defined innovation in fly fishing for more than half a century. Since introducing the first modern floating fly line in 1954, the Midland, Michigan–based company has continued to push performance forward.

With breakthroughs like Microballoons for improved flotation, tungsten-infused sinking lines, and Advanced Shooting Technology, Scientific Anglers has earned a reputation for engineering the most consistent, high-performing lines in the world.

From trout streams to saltwater flats, Scientific Anglers Fly Lines deliver precision, durability, and smooth casting in every environment. Explore our selection at Lost Coast Outfitters and fish with the same technology trusted by generations of anglers.

SA Dacron Backing

SA Dacron Backing

SA Dacron Backing

From $ 9.95

(5.0)

SA Amplitude Smooth Infinity Fly Line

SA Amplitude Smooth Infinity Fly Line

SA Amplitude Smooth Infinity Fly Line

$ 99.95

SA Amplitude Smooth Grand Slam Fly Line

SA Amplitude Smooth Grand Slam Fly Line

SA Amplitude Smooth Grand Slam Fly Line

$ 99.95

(5.0)

SA Absolute Flat Mono Shooting Line

SA Absolute Flat Mono Shooting Line

SA Absolute Flat Mono Shooting Line

$ 18.95

LCO Staff Pick

SA Amplitude Textured Grand Slam Fly Line

SA Amplitude Textured Grand Slam Fly Line

SA Amplitude Textured Grand Slam Fly Line

$ 129.95

(5.0)

SA Mastery Expert Distance Competition Fly Line

SA Mastery Expert Distance Competition Fly Line

SA Mastery Expert Distance Competition Fly Line

$ 84.95

(5.0)

SA Amplitude Textured Infinity Fly Line

SA Amplitude Textured Infinity Fly Line

SA Amplitude Textured Infinity Fly Line

$ 129.95

SA Amplitude Textured Anadro Fly Line

SA Amplitude Textured Anadro Fly Line

SA Amplitude Textured Anadro Fly Line

$ 129.95

SA Amplitude Textured MPX Fly Line

SA Amplitude Textured MPX Fly Line

SA Amplitude Textured MPX Fly Line

$ 129.95

SA Amplitude Smooth Anadro Indicator Fly Line

SA Amplitude Smooth Anadro Indicator Fly Line

SA Amplitude Smooth Anadro Indicator Fly Line

$ 99.95

SA Gel Spun Backing

SA Gel Spun Backing

$ 34.95

LCO Staff Pick

Packaging for Magnitude Grand Slam Clear Float fishing line with Scientific Anglers branding, indicating it is a saltwater fly line with a clear tip.

SA Magnitude Smooth Grand Slam Fly Line - 10' Clear Float Tip

SA Magnitude Smooth Grand Slam Fly Line - 10' Clear Float Tip

From $ 149.95

SA Sonar Titan 3D Sink Fly Line - I/S3/S5

SA Sonar Titan 3D Sink Fly Line - I/S3/S5

SA Sonar Titan 3D Sink Fly Line - I/S3/S5

$ 99.95

SA Sonar Trout Express Fly Line

SA Sonar Trout Express Fly Line

SA Sonar Trout Express Fly Line

$ 99.95

SA Skagit Tips

$ 29.95

Save 30%

SA Amplitude Textured Trout Fly Line

SA Amplitude Textured Trout Fly Line

SA Amplitude Textured Trout Fly Line

$ 90.97

$ 129.95

SA Spey Lite Scandi Head

SA Spey Lite Scandi Head

SA Spey Lite Scandi Head

$ 59.95

SA Sonar Grand Slam Fly Line - Clear Intermediate Tip

SA Sonar Grand Slam Fly Line - Clear Intermediate Tip

SA Sonar Grand Slam Fly Line - Clear Intermediate Tip

$ 99.95

SA TC Textured Spey Tips - 10'

SA TC Textured Spey Tips - 10'

$ 29.95

SA Amplitude Smooth MPX Fly Line

SA Amplitude Smooth MPX Fly Line

SA Amplitude Smooth MPX Fly Line

$ 99.95

SA Integrated Switch Fly Line

SA Integrated Switch Fly Line

SA Integrated Switch Fly Line

$ 149.95

SA Sonar Titan Sink Tip Fly Line

SA Sonar Titan Sink Tip Fly Line

SA Sonar Titan Sink Tip Fly Line

$ 99.95

(5.0)

SA Mastery Double Taper Fly Line

SA Mastery Double Taper Fly Line

SA Mastery Double Taper Fly Line

$ 79.95

SA Spey Lite Integrated Scandi Fly Line

SA Spey Lite Integrated Scandi Fly Line

SA Spey Lite Integrated Scandi Fly Line

$ 99.95

SA Magnitude Textured Grand Slam Fly Line - 10' Clear Float Tip

SA Magnitude Textured Grand Slam Fly Line - 10' Clear Float Tip

SA Magnitude Textured Grand Slam Fly Line - 10' Clear Float Tip

$ 179.95

SA Sonar Titan Tropical/Jungle Fly Line - 15' Clear Intermediate Tip

SA Sonar Titan Tropical/Jungle Fly Line - 15' Clear Intermediate Tip

SA Sonar Titan Tropical/Jungle Fly Line - 15' Clear Intermediate Tip

$ 99.95

Save 30%

SA Mastery Trout Fly Line

SA Mastery Trout Fly Line

$ 55.96

$ 79.95

Sold out

Save 23%

SA Amplitude Textured Trout Standard Fly Line

SA Amplitude Textured Trout Standard Fly Line

SA Amplitude Textured Trout Standard Fly Line

$ 99.95

$ 129.95

SA Amplitude Smooth Redfish Cold Fly Line

SA Amplitude Smooth Redfish Cold Fly Line

SA Amplitude Smooth Redfish Cold Fly Line

$ 99.95

Rigged Gel Spun Backing

Rigged Gel Spun Backing

From $ 15.00

LCO Staff Pick

SA Amplitude Textured Infinity Salt Fly Line

SA Amplitude Textured Infinity Salt Fly Line

SA Amplitude Textured Infinity Salt Fly Line

$ 129.95

SA Amplitude Smooth Bonefish Plus Fly Line

SA Amplitude Smooth Bonefish Plus Fly Line

SA Amplitude Smooth Bonefish Plus Fly Line

$ 99.95

SA Sonar Stillwater Seamless Density Fly Line

SA Sonar Stillwater Seamless Density Fly Line

SA Sonar Stillwater Seamless Density Fly Line

$ 99.95

SA Mastery MPX Fly Line

SA Mastery MPX Fly Line

SA Mastery MPX Fly Line

$ 79.95

SA Sonar Striper I/5/7 Fly Line

SA Sonar Striper I/5/7 Fly Line

SA Sonar Striper I/5/7 Fly Line

$ 99.95

SA Scandi Head

SA Scandi Head

$ 59.95

SA Amplitude Smooth Tarpon Fly Line

SA Amplitude Smooth Tarpon Fly Line

$ 99.95

SA Shooting Line Intermediate 0.030

SA Shooting Line Intermediate 0.030

$ 39.95

SA Amplitude Smooth Redfish Warm Fly Line

SA Amplitude Smooth Redfish Warm Fly Line

SA Amplitude Smooth Redfish Warm Fly Line

$ 99.95

SA Magnitude Smooth Infinity Salt Fly Line - 12' Clear Float Tip

SA Magnitude Smooth Infinity Salt Fly Line - 12' Clear Float Tip

SA Magnitude Smooth Infinity Salt Fly Line - 12' Clear Float Tip

$ 149.95

SA Amplitude Smooth Creek Trout Fly Line

SA Amplitude Smooth Creek Trout Fly Line

$ 99.95

SA Sonar Titan Fly Line - Full Intermediate

SA Sonar Titan Fly Line - Full Intermediate

$ 99.95

SA Amplitude Textured Tarpon Fly Line

SA Amplitude Textured Tarpon Fly Line

SA Amplitude Textured Tarpon Fly Line

$ 129.95

SA Amplitude Smooth Trout Expert Fly Line

SA Amplitude Smooth Trout Expert Fly Line

$ 99.95

SA Sonar Striper Intermediate Fly Line

SA Sonar Striper Intermediate Fly Line

$ 99.95

SA Amplitude Smooth Trout GP Fly Line

SA Amplitude Smooth Trout GP Fly Line

$ 99.95

SA Magnitude Smooth Grand Slam Fly Line - Full Clear

SA Magnitude Smooth Grand Slam Fly Line - Full Clear

SA Magnitude Smooth Grand Slam Fly Line - Full Clear

$ 149.95

(3.0)

SA Mastery Euro Tactical Nymph Fly Line - Braided Core

SA Mastery Euro Tactical Nymph Fly Line - Braided Core

SA Mastery Euro Tactical Nymph Fly Line - Braided Core

$ 59.95

SA Sonar Sink 25 Coldwater Fly Line

SA Sonar Sink 25 Coldwater Fly Line

SA Sonar Sink 25 Coldwater Fly Line

$ 99.95

(5.0)

SA Magnitude Textured Infinity Fly Line - 10' Clear Float Tip

SA Magnitude Textured Infinity Fly Line - 10' Clear Float Tip

$ 179.95

Ships Fast, Local Delivery & Pickup

In-stock orders ship in 1-2 business days. LCO is the fastest online shop, guaranteed. We also offer local delivery in San Francisco and free pickup at the shop.

California's Fly Shop

540 Jackson St, San Francisco. LCO is your local shop, no matter where you call home. We are experts in fly fishing across the Golden State and beyond.

Support Small Business

LCO is part of a proud and growing community of anglers, educators, and conservationists. When you shop with us you are supporting a small shop helping make a big impact.