How to Bridge to Linea: Fastest and Cheapest Options in 2025

In DeFi, user experience often takes a back seat to infrastructure. Linea flips that script, bringing zk-rollup security to Ethereum scaling with an ease comparable to a web2 app.

Linea is a next-generation Layer 2 blockchain powered by zero-knowledge proofs, designed for mass adoption, fast finality, low fees, and full EVM equivalence, which enables developers to deploy without rewriting contracts. But Linea isn’t all about performance. Its mission encompasses usability at scale.

In this guide, we’ll explore how Linea works, what makes it different from other L2s, and how Across offers the fastest, most cost-efficient way to bridge to its growing ecosystem.

Linea is a zkEVM Layer 2 built by Consensys: the blockchain and web3 software company founded by Ethereum co-founder Joe Lubin. It’s engineered to scale Ethereum without compromising decentralization, experience, or security.

Unlike some L2s that require contract rewrites or custom tooling, Linea offers full EVM equivalence at the bytecode level, meaning developers can deploy Solidity contracts on Linea exactly as they would on Ethereum mainnet without changes or workarounds.

Linea leverages zero-knowledge proofs, specifically zkSNARKs, to batch and verify transactions offchain. These proofs are then submitted to Ethereum for final settlement, dramatically reducing gas costs while preserving Ethereum-grade security.

What makes Linea especially powerful is its seamless UX and infrastructure compatibility. With native integrations into MetaMask and Infura (both built by Consensys), both developers and users enjoy a familiar, high-performance experience that doesn't compromise decentralization.

Linea is one of the most technically advanced EVM L2s in production today, combining zero-knowledge security with full EVM compatibility and a rapidly growing ecosystem.

Since its launch, Linea has experienced significant growth, with nearly 10 million unique addresses interacting on the network. Through a series of Alpha upgrades, the protocol has introduced major improvements across performance, security, and developer experience, including:

Each upgrade has pushed Linea closer to its goal of delivering a scalable, production-ready zkEVM that doesn't compromise on decentralization or usability. 

But Linea isn’t just technically strong. It’s also strategically positioned. As Consensys expands its L2 footprint, Linea is becoming the default zkEVM for many of Ethereum’s top apps, offering an ideal balance of scalability, usability, and decentralization.

If you choose to bridge, here’s what you can expect from the Linea ecosystem:

Linea's DeFi landscape is rapidly evolving, offering users a suite of high-performance, cost-effective financial services. Key platforms include:

Combined with Linea’s low transaction costs and zk-level security, these integrations make the network a compelling destination for DeFi users and builders alike.

Linea is quickly becoming a hub for onchain creativity, spanning gaming, NFTs, and memecoins.

From minting to memes, Linea is building a culture-first ecosystem where creators and communities can launch, grow, and thrive.

Linea has rapidly attracted builders through initiatives like Linea Voyage, bringing in thousands of developers and dozens of new projects. With deep compatibility across Solidity, MetaMask, Infura, and more, the network makes it easy to deploy and scale without learning new tools. 

Linea is built for scale, offering faster finality and lower withdrawal latency than optimistic rollups (i.e., without a seven-day challenge period to cause delays). With zkSNARK-based proofs, batch compression, and regular performance upgrades, bridging into Linea means gaining the speed, security, and low fees of a next-generation L2 while retaining Ethereum-grade trust.

Linea offers two primary methods for bridging assets: the Native Bridge and the Bridge Aggregator.

The Native Bridge is designed for direct transfers between Ethereum and Linea. It's particularly suitable for large transfers (such as those involving substantial amounts of ETH or ERC-20 tokens) or for technical users who desire more control, albeit with a slightly more complex process.

The Bridge Aggregator, on the other hand, is powered by the Li.Fi protocol and provides a third-party interface for bridging assets across multiple networks. It's generally recommended for everyday users.

Here’s what to expect from the Native Linea Bridge:

If you need faster transactions, lower costs, and secure crosschain interoperability between many different chains, Across is the most efficient way to bridge to and from Linea.

Across uses an Intents-based bridging architecture secured by UMA’s optimistic oracle (OO). Third-party relayers and liquidity providers front the transfer, allowing you to receive your funds on the destination chain almost instantly while final settlement occurs asynchronously on Ethereum.

If you're curious about how it all works under the hood, we’ve written extensively about crosschain interoperability and the role of Intents. The short version: Across delivers reliable, cost-efficient finalization without compromising on speed or security.

Here’s why it makes sense to bridge to and from Linea with Across:

Across is the most efficient bridge to Linea. The best part? Using Across is incredibly intuitive and user-friendly. Here’s a step-by-step guide:

To bridge from Ethereum mainnet (or any supported L2) to Linea, start by visiting the Across app and connecting your wallet.

Next, choose your origin (from) and destination (to) chains. For this example, we’ll bridge from Arbitrum to Linea. Here, you’ll also specify how much ETH you want to bridge, which will prompt Across to estimate the fill time and fees based on current network conditions.

Note: This process is the same if you’re bridging from Linea back to mainnet. Just reverse the origin and destination chains. 

Once you’ve specified the amount of ETH you'd like to bridge and have looked over the fee details, click on “confirm transaction”, and your tokens will be on their way. Transactions are completed in seconds, so you’ll receive your assets on Linea almost instantly.

Linea is redefining Ethereum scaling. As a zkEVM Layer 2, it combines Ethereum-level security with a smooth user experience and full EVM compatibility, making it ideal for users and developers alike.

With fast finality, low fees, and native MetaMask support, Linea enables effortless onchain activity across DeFi, NFTs, and beyond.

To tap into this growing ecosystem, bridging is your first step. While the Native Linea Bridge offers a secure option for Ethereum transfers, Across stands out as the fastest and most cost-effective way to bridge to Linea from any supported chain including Arbitrum, Polygon, Optimism, and many more.

Across uses a decentralized network of relayers and UMA’s optimistic oracle to ensure secure, ultra-fast transactions at minimal cost. If you want the best Linea bridge in 2025, the choice is simple.

Try Across today and experience the best Linea bridging solution firsthand.

For more information on Linea, bridging, and crosschain transfers, check out these resources:

If you're new to bridging, check out these guides:

How do you bridge from Linea back to ETH?

You can use either of the following:

Can assets be moved back from Linea to Ethereum?

Yes. Assets bridged to Linea can be returned to Ethereum using the official native bridge or a third-party option like Across.

How do I use the Linea Bridge to transfer tokens?

Visit bridge.linea.build, connect your wallet, select your token (ETH, USDC, etc.), enter the amount, and confirm the transaction.

If using the native bridge, manual claiming may be required for certain assets.

If using the aggregator, routes will be selected based on cost/speed preferences.

How long does bridging take?

What are the costs?

Bridging costs vary depending on method and current network conditions:

Is bridging secure?

Yes, but each option uses a different trust model:

Both are secure, but Linea Bridge prioritizes L1 trust assumptions, while Across offers faster execution and better cost efficiency.