The short answer
A bridge route is the sequence of providers and blockchain actions used to move an asset from a source state to a destination state. It can be direct or contain several steps.
ONESWAP LEARN
What Is a Bridge Route?.
Understand how a cross-chain route is assembled and why two routes can produce different results.
How it works
Two routes for the same request can differ in liquidity source, bridge mechanism, swap venue, transaction count, fee structure and expected output.
Why it matters
Route aggregators evaluate available paths at the time of the request. A route that wins on price at one moment can change as liquidity and gas conditions move.
Practical takeaway
Always compare the complete route, not just its first transaction. The final output and all required wallet actions are what determine the practical result.