“Flyover” and “overpass” are regional equivalents when they mean a bridge carrying one route over another. “Flyover” also has a separate aircraft-event sense, especially in American English.
ReviewedEvidence2 sourcesSectionEnglish Usage
Quick answer
For the road-bridge sense, UK “flyover” corresponds to US “overpass”; US “flyover” also has an aircraft-event meaning.
Key details
Confusion Familyregional vocabulary with secondary sense
Rule FamilyBritish and American vocabulary
Termsflyover, overpass
Variant ScopeFor a bridge carrying a road or railway over another road, UK “flyover” corresponds to US “overpass.” In US usage, “flyover” can also mean a ceremonial aircraft flight.
Further guidance
Core difference
In the road-bridge sense, “flyover” is chiefly UK and “overpass” is chiefly US.
Fast Test
For a grade-separated road bridge, choose “flyover” for UK-facing prose and “overpass” for US-facing prose.
Usage Boundary
Do not assume every “flyover” is a bridge: American English also uses “flyover” for an aircraft display, where British English often uses “flypast.”
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
FLYOVER — Cambridge Dictionary↗ (opens in a new tab)Cambridge University Press & Assessment · Regional bridge-sense evidence that UK flyover corresponds to US overpass; also documents the separate aircraft-event sense.
“Faucet” and “tap” name the same kind of water-control fitting in their shared plumbing sense. “Faucet” is the usual US term and “tap” the usual UK term.
“Kerosene” and “paraffin” overlap as regional names for a petroleum liquid fuel used for heating and lighting. The match is sense-specific because “paraffin” also refers to wax.
“Movie theater” and “cinema” overlap when they name a venue where people pay to watch films. Cambridge marks “movie theater” as US with UK “cinema,” while “cinema” also extends to films and filmmaking more generally, so the regional equivalence is limited to the venue sense.
