10 Best Trout Fly Lines 2026 in the United States

The Scientific Anglers Amplitude Trout Standard fly line is designed for trout fishing and features a line weight of WF-5-F, making it suitable for both beginners and experienced anglers. One of its standout features is the AST Plus slickness additive, which enhances shooting ability and durability, making it easier to cast farther and ensuring the line lasts longer.

The floating texture on the tip helps keep dry flies afloat for extended periods, which is essential for effective trout fishing. Additionally, the shooting texture on the running line reduces friction, allowing for longer casts with less effort. The braided multifilament core provides strength and flexibility, which is beneficial when dealing with larger trout and grayling.

The line comes in a visually appealing optic green/willow/dark willow color, which blends well with natural surroundings, helping to avoid spooking the fish. However, some potential buyers might find the line's price on the higher side for a fly line, and the fact that it's ranked #68 in Fly Line suggests it might not be the top choice for everyone. This product is ideal for trout and grayling anglers looking for a high-performance, durable fly line that can improve their casting distance and fly flotation.

The Scientific Anglers SA Amplitude Trout Fly Line is designed specifically for trout fishing, especially when using dry flies and nymphs. Its WF5F line weight makes it suitable for lighter, more delicate casts, which is important when you want to avoid spooking trout. The line features a specialized taper that aids in precise, gentle presentations, helping flies land softly on the water. The Dry Tip Technology keeps the front of the line floating, making it easier to keep your fly visible and active on the surface.

Its Flex PVC material offers a good balance of durability and smooth handling, while the welded loops at both ends make it easy to connect to leaders and backing without extra knots. Colored in blue and bamboo tones, it also offers good visibility to the angler without being too bright. The line is best suited for moderate to cold climates, so if you fish in warmer waters, you might want to consider other options. A breaking strength of 50 pounds ensures reliability during fights with larger fish, even though it’s primarily targeted at trout.

Some users might find the line a bit pricey compared to basic fly lines but the performance benefits for delicate trout presentations justify the cost. This line is an excellent choice for anglers seeking to improve accuracy and presentation in trout fishing, especially in cooler environments.

The Scientific Anglers Mastery Infinity WF5F fly line is a versatile choice for anglers targeting trout and other freshwater species like grayling, panfish, bass, and even some larger fish like pike and salmon. Its half-size heavier weight helps load fast-action rods more quickly, making casting feel smoother and more efficient. The extended head length is a notable design that supports long-distance casts and helps with mending the line in the water, which is useful for controlling your drift. This makes it a good all-rounder for dry flies, nymphs, and streamers.

The coating and polyethylene core provide durability and a smooth feel through the rod guides. It’s optimized for moderate to cold climates, so it might not perform as well in very warm conditions. The bamboo and buckskin colors offer decent visibility without being too flashy.

It is a dependable line with a solid reputation. Anglers who prefer very specialized lines for certain techniques might find more tailored options elsewhere. For most freshwater fly fishing needs, especially trout, it strikes a good balance of performance and versatility.