---
title: "DUB is which airport? Dublin"
description: "DUB is Dublin Airport in Dublin, Ireland. Why the code is DUB and not something you could guess, what EIDW means, and the codes it gets mixed up with."
url: https://atoneplace.net/airport/dub/
site: "At One Place"
---

# What airport is DUB?

**DUB is: Dublin Airport**

Dublin, Ireland

## Why the code is DUB

The first three letters of Dublin.

The airport authority or a contemporaneous record states this directly.

## The airport

- **IATA code:** DUB
- **ICAO code:** EIDW
- **Airport:** Dublin Airport
- **City:** Dublin, Ireland
- **Code origin:** Documented

Dublin has US Customs and Border Protection preclearance, so passengers to the United States clear immigration in Ireland and land domestically. Only a handful of airports outside the Americas have this, and Dublin and Shannon were the first in Europe.

## The other code, EIDW

Every airport has two codes. The three-letter IATA code, DUB, is the one on your boarding pass and your luggage tag, and it is assigned for commercial use. The four-letter ICAO code, EIDW, is the one pilots and controllers use, and it is assigned geographically: the first letter or two identify the region, so every airport in the same part of the world shares a prefix. That is why EIDW looks nothing like DUB.

## Common questions

### What airport is DUB?

Dublin Airport, in Dublin, Ireland.

### Why is Dublin's airport called DUB?

The first three letters of Dublin.

### What is the difference between DUB and EIDW?

DUB is the IATA code, used commercially — tickets, timetables, luggage tags. EIDW is the ICAO code, used operationally by pilots and air traffic control, and assigned geographically by region.

## Related pages

- [Ireland](https://atoneplace.net/country/ireland/)
- [The flag of Ireland](https://atoneplace.net/flag/ireland/)
- [Airport codes in Ireland](https://atoneplace.net/airport/in/ireland/)

## Sources

- OurAirports — OurAirports (https://ourairports.com/data/) [Public domain]