Relay is the cheapest route we checked into and out of Arbitrum: its docs list a 0.00% platform fee on token bridges plus a $0.02 execution cost and gas. On Arbitrum itself you pay an L2 network fee plus a fee for posting data to Ethereum, and the official Arbitrum bridge makes withdrawals to Ethereum wait at least seven days. Across and Relay skip that wait by paying you out from relayer funds.
Quick answer
Use Relay or Across for fast, low-fee moves between Arbitrum and other chains, and the official Arbitrum bridge for large ETH deposits from Ethereum when a seven-day exit later is acceptable.
Relay's docs list a 0.00% platform fee on token bridges and 0.01% to 0.15% on swaps, plus a $0.02 execution cost and gas. Its chains API returns Arbitrum among 60 chains, and Spearbit, Certora and Zellic audited it.
Chains
EVM chains, Solana, Bitcoin and others
Platforms
Web, API, SDK
Custody
Non-custodial
Fees
0.00% platform fee on token bridges; 0.01% to 0.15% on swaps; plus $0.02 flat execution cost and gas
Chains
69+ networks
Pros
0.00% platform fee on plain token bridges
Routes across 69+ networks per its docs
Depository audited by Spearbit and Certora; settlement by Zellic
Cons
Platform fee up to 0.15% on minor-asset swaps
$0.02 flat execution cost plus destination gas on every transfer
Depository withdrawals depend on the Allocator's MPC signing authority
Skip it if you want a governance token: Relay has none.
Across has a SpokePool contract on Arbitrum and shows its cost as an LP fee plus a relayer fee, taken as the gap between what you send and what you receive. OpenZeppelin audited it.
Chains
Ethereum, Arbitrum, Base, BNB Chain and other EVM chains
Platforms
Web, API
Custody
Non-custodial
Fees
LP fee plus relayer fee, taken as the gap between input and output amount
Chains
24 chains
Pros
Supports 24 chains per its docs
Contracts audited by OpenZeppelin
Bug bounty pays up to $1,000,000 for critical issues
Cons
LP fee rises steeply once pool utilization passes its kink
Blast support scheduled for removal on July 20, 2026
Mostly EVM chains
Skip it if you need non-EVM routes Across does not list.
The Arbitrum bridge at bridge.arbitrum.io moves ETH and ERC-20s between Ethereum and Arbitrum One with no bridge operator in the middle. Withdrawals back to Ethereum wait at least seven days, and you pay an L2 network fee plus a parent chain data fee.
Chains
Ethereum L2
Platforms
Web, API
Fees
L2 network fee plus parent chain (L1) data poster fee
Token
ARB (governance)
Company
Offchain Labs (Nitro implementation)
Pros
BoLD dispute protocol resolves challenges within a fixed period
Nitro node code is public on GitHub
Censorship timeout lets users force inclusion if the Sequencer stalls
Cons
Withdrawals to Ethereum take about 7 days
Sequencer is still centralized per Arbitrum docs, with decentralization a long-term goal
Withdrawal claims must be executed manually on Ethereum
Skip it if you need funds back on Ethereum fast: the exit takes at least seven days.
Stargate V2 has mainnet contracts on Arbitrum and 45 other chains, and has run since March 17, 2022. V2 uses a dynamic fee that can turn into a rebate; Zellic and OtterSec audited V2.
Chains
Ethereum, Arbitrum, Base, BNB Chain and other EVM chains
Platforms
Web, API
Custody
Non-custodial
Fees
Dynamic fee or rebate in V2 (V1 was a flat 6 bps); 5/6 to treasury, 1/6 to veSTG
Chains
46 chains (V2 mainnet contracts)
Pros
V2 contracts deployed on 46 chains
V2 audited by Zellic and OtterSec; V1 by Zellic, Quantstamp and Zokyo
Transfers on depleted routes can earn a rebate instead of paying a fee
Cons
Dynamic V2 fee is not a fixed published rate
User also pays LayerZero execution and DVN fees in native gas
V2 bounty page in docs still says coming soon
Skip it if you want a fixed fee rate: V2 does not publish one.
Portal Bridge runs on Wormhole, which has Core Contracts on Arbitrum among 37 mainnet chains and lists 29 audits by firms including Trail of Bits and OtterSec.
Chains
Ethereum, Solana, Sui, Aptos, Base, Arbitrum and other chains
Allbridge Core moves USDC, USDT and USDe to and from Arbitrum through CCTP, xReserve and OFT, with a flat 0.1% service fee plus a relayer fee. Its docs say the Core liquidity pools were discontinued in July 2026.
Synapse lists FastBridge (RFQ) contracts on Arbitrum and supports 20+ EVM and non-EVM chains. Its docs say its features will fold into a new product called Cortex.
Chains
Ethereum, Arbitrum, Base, Optimism, Avalanche and other chains
Platforms
Web, API, SDK
Custody
Non-custodial
Chains
20+ EVM and non-EVM chains
Token
SYN
Pros
Bridges between 20+ EVM and non-EVM chains
Native USDC route through Circle CCTP
SDK, REST API and embeddable widget for integrators
Cons
Pool routes convert through nUSD or nETH intermediate tokens
Docs say all features will fold into Cortex, so the product is in transition
No audit list in the current docs
Skip it if you want a published fee and audit list: current docs show neither.
“Not verified” means we could not confirm the value on the project’s own pages.
How we rank Arbitrum bridges
01Confirmed on Arbitrum: Arbitrum One must appear in the bridge's own contract list, chain list or API. We did not rely on third-party lists.
02Published fee: the protocol's own fee from its docs, excluding gas. A fee we could not find counts against the bridge.
03Exit time: whether you wait for Arbitrum's seven-day withdrawal window or get paid out on the destination chain right away.
04Audits: named auditors on the bridge's own pages.
05Operating status: incidents and product changes the project states in its docs, such as Allbridge's July 2026 change.
No project paid to be listed or ranked. Full rules: methodology.
What we did not test
We did not open accounts, deposit money or place trades with these services.
We did not audit smart contracts, reserves or security claims ourselves; we report what the project and its auditors publish.
Fees, limits and availability change; the list date shows when we last checked them.
Rubric last updated Sep 26, 2026. Crypto assets are not insured by the FDIC or SIPC, and you can lose all the money you put in. This page is educational content, not financial advice.
How to choose
01
Know the seven-day rule
Withdrawals from Arbitrum One to Ethereum through the official bridge wait at least seven days, per Arbitrum's docs. Third-party bridges such as Across pay you on Ethereum first and settle later.
02
Deposits are the easy direction
Arbitrum's docs apply the seven-day wait to withdrawals from Arbitrum One to Ethereum. Deposits from Ethereum into Arbitrum are not subject to it.
03
Compare the received amount
Across and Relay show cost as the difference between input and output. Quote the same transfer on two bridges and compare what lands in your wallet.
04
Check which USDC you get
Arbitrum's bridge docs note that Arbitrum One supports two USDC variants. Allbridge Core routes USDC through Circle's CCTP, which moves native USDC.
Who should skip all of these
Coinbase or exchange users who can withdraw straight to Arbitrum One: a direct withdrawal skips the bridge fee.
Anyone who needs Hop Protocol: it is not operating.
How long does it take to withdraw from Arbitrum to Ethereum?
±
Through the official Arbitrum bridge, at least seven days, per Arbitrum's docs. Bridges such as Across and Relay pay out on Ethereum sooner because a relayer fronts the funds.
What is the cheapest way to bridge to Arbitrum?
±
Of the fees we checked, Relay lists a 0.00% platform fee on token bridges plus a $0.02 execution cost and gas. Gas on the source chain still applies.
What fees do I pay on Arbitrum itself?
±
An L2 network fee for execution plus a poster fee for data published to Ethereum, per Arbitrum's gas and fees docs.
Is Allbridge still working on Arbitrum?
±
Yes for stablecoins: its docs list Arbitrum and route transfers through CCTP, xReserve and OFT. Its liquidity pools were discontinued in July 2026.
Is Hop Protocol still working?
±
We excluded it: when we checked on Sep 26, 2026, its site no longer served the bridge app.
Compiles and updates the lists on DappAtlas. Facts come from primary sources: each project’s own pages, protocol docs and standards. No project pays to be mentioned.