Washington DC Airport Code: IATA, ICAO & Ultimate Travel Guide

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Washington D.C. · DMV Region · USA

DC Airport Code: IATA, Maps & Complete DMV Travel Guide

Washington D.C. relies on three distinct airports. Identify the right DC airport code (DCA, IAD, or BWI), secure exact ZIP codes for navigation, check Metro Silver line access, and compare transit tools to simplify your flight into the nation’s capital.

Quick answer: “DC airport code” actually refers to a regional system. DCA is the code for Reagan National (closest, primarily domestic). IAD is Dulles International (main global hub). BWI is Baltimore/Washington (budget and Southwest hub).

Use DC Airport Selector Compare DCA, IAD & BWI

Independent Planner: This is an independent travel guide. It is not affiliated with the Metropolitan Washington Airports Authority (MWAA), TSA, WMATA, or the Maryland Aviation Administration. Always confirm flight status and terminal gates with your official airline source.

Washington DC Airport Codes List

Which “DC Airport Code” do you actually need?

Unlike cities with a single centralized facility, the Washington D.C. metropolitan area uses three major airports. If you search for the Washington DC airport code or a “DC airport abbreviation,” booking engines will often default to the umbrella code WAS, which groups all three. Here is how to distinguish the actual physical airports:

Airport Code (IATA)	ICAO	Official Name	Primary Purpose
DCA	KDCA	Ronald Reagan Washington National	Ultra-convenient domestic hub. Located directly across the Potomac River.
IAD	KIAD	Washington Dulles International	Massive international gateway for the region. Long-haul global flights.
BWI	KBWI	Baltimore/Washington Thurgood Marshall	Budget airline hub (especially Southwest), situated between DC and Baltimore.
WAS	N/A	All Washington Airports	City code used in search engines to check fares across DCA, IAD, and BWI at once.

Booking Tip: Typing “WAS” into Google Flights or Expedia will show you tickets for all three. However, ensure you verify which exact airport you booked before ordering an Uber, as they are miles apart!

Interactive Traveler Tools

Build your DC airport strategy

Use these calculators directly on your device. They do not transmit your data and do not replace checking the live WMATA Metro tracker or official MWAA sites.

Airport Travel Command Center

Airport live checks & travel tools

Use current local conditions, official live-status links and planning calculators before you travel. Airline gate, terminal and flight times can change; your carrier remains the final source for flight-specific details.

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Live flight center

Check the airport's official flight board, then confirm any last-minute gate or timing change with the airline.

Official flight search Airline directory

“Live” here means a current source is being opened or fetched. This block does not invent gates, delays or flight status when a verified feed is unavailable.

Current airport-area weather

Useful for planning your trip to the airport. This is model-based local weather, not an aviation METAR or an airline operational forecast.

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Source: Open-Meteo current model dataNot loaded

Quick official checks

Open the source that matches the decision you are making right now.

Terminal map Parking status Security / TSA FAA airport status Aviation weather Official airport site

When should I reach the airport?

A planning estimate based on flight type and common time buffers. Always increase the buffer for severe weather, major holidays, unusual airport alerts or airline instructions.

Flight departure

Flight type

Drive / transit time to airport (minutes)

Extra parking / rental-car transfer (minutes)

Checking a bag (+20 min) Family, mobility or extra-assistance buffer (+25 min) Holiday / peak travel buffer (+30 min)

Enter your departure time to build a plan.

Connection-risk checker

This is a planning heuristic, not an airline minimum-connection-time rule. International arrivals that require U.S. entry processing, baggage claim and security can need substantially more time.

Connection time (minutes)

Arrival type

Terminal change Separate tickets / separate reservation Need to reclaim / recheck baggage Mobility / family assistance may add transfer time

Adjust the options to estimate how much buffer you have.

Parking cost estimator

Uses the airport-specific rates stored in this article's configuration. Rates can change; verify availability and final pricing on the official parking page before driving in.

Parking option

Number of 24-hour periods

Choose a lot and number of days.

Check live parking / official rates

Passenger pickup readiness

Landing time is not curb-ready time. Add time for taxiing, deplaning, baggage claim, customs when applicable and walking to the correct pickup zone.

Scheduled / estimated landing

Arrival type

Checked baggage Mobility / family assistance

Enter the landing time to estimate when the passenger may actually reach pickup.

Which DC airport is best for me?

Select your primary destination area to get the most logical airport recommendation.

Final Destination / Hotel Area

Transit Mode Selector

How are you getting from the airport to the city?

Preferred Method

DC National Airport Code

DCA: Ronald Reagan Washington National Airport

Code: DCA

When travelers search for the DC National airport code, they are looking for DCA. Located in Arlington, VA, it is physically the closest airport to downtown Washington D.C., directly across the Potomac River.

PRO

Why choose DCA?

DCA boasts an unparalleled location. You can jump directly onto the Metro’s Blue or Yellow lines and be at the National Mall or Capitol Hill in under 20 minutes.

CON

The Perimeter Rule

DCA has strict federal perimeter regulations restricting most flights longer than 1,250 miles, and it lacks comprehensive U.S. Customs facilities. It is primarily a domestic airport.

Check DCA Metro Access Open the official DCA Metro guide ↗. Next step: Note that the station is connected directly to the concourse via elevated pedestrian bridges. You do not need an external shuttle to reach the trains.

DC Dulles Airport Code

IAD: Washington Dulles International Airport

Code: IAD

Searching for the DC Dulles airport code or the Washington DC airport code international leads you to IAD. Located roughly 26 miles west of downtown DC in Sterling, VA, this is the region’s massive hub for international and long-haul flights.

GLOBAL

International Gateway

IAD features comprehensive U.S. Customs and Border Protection and hosts dozens of foreign flag carriers. If you are flying to Europe, Asia, or the Middle East, you are almost certainly flying out of IAD.

TRAIN

The AeroTrain System

Instead of walking miles, IAD uses an underground automated people mover called the AeroTrain to connect the Main Terminal with Concourses A, B, and C.

Navigate the IAD Terminals Open the official Dulles Airport Map ↗. Next step: Use the “AeroTrain” overlay to see exactly how to reach your concourse after passing through the central TSA checkpoint.

Baltimore DC Airport Code

BWI: Baltimore/Washington International Thurgood Marshall

Code: BWI

BWI is located roughly 30 miles northeast of Washington D.C., in Maryland. It is heavily utilized by travelers to both Baltimore and DC, especially due to its massive presence of budget carriers like Southwest Airlines.

Transit Method to DC	How it works
MARC Train (Penn Line)	Take the free airport shuttle to the BWI Rail Station, then ride the MARC train into Washington Union Station.
Amtrak	Also stops at the BWI Rail Station for a fast, albeit slightly more expensive, connection to DC Union Station.
Uber / Lyft	Requires driving down the Baltimore-Washington Parkway (I-295); heavily subject to rush hour traffic.

BWI 24/7 Shuttle: Do not walk to the train station! BWI offers a free, high-frequency courtesy shuttle operating 24 hours a day connecting the terminal directly to the Amtrak/MARC station. It runs roughly every 10-15 minutes.

Metro integration

Does the Metro go to all DC airports?

Washington’s Metro system now provides phenomenal access to the two Virginia airports, completely changing how travelers navigate the DMV.

1
Silver Line to IAD (Dulles)
The Silver Line extension connects directly to Dulles Airport. The station is integrated at the terminal building level, accessible via moving sidewalks directly from the baggage claim. Over 24,000 people can now reach IAD within an hour via Metro.
2
Blue & Yellow Lines to DCA (Reagan)
The Ronald Reagan Washington National Airport station is served by both the Blue and Yellow lines, bringing passengers literally steps from Terminal 2.
3
No direct Metro to BWI
The WMATA Metro does not stretch into Baltimore. To use rail from BWI to DC, you must use the MARC commuter train or Amtrak.

Check Live Metro Status Open the WMATA Silver Line Status page ↗. Next step: Look for any red banners indicating track work or escalator outages at the “Washington Dulles International Airport” station before rolling your luggage there.

GPS & Navigation

DC airport zip codes & official addresses

Verified Database Data

If your GPS or Uber app is struggling to locate “DC Airport,” using the exact DC airport zip code and physical address guarantees you end up at the correct drop-off curb.

DCA

Reagan National

Zip Code: 22202

2401 Smith Boulevard
Arlington, VA 22202

IAD

Dulles International

Zip Code: 20166

1 Saarinen Cir
Sterling, VA 20166

BWI

Baltimore/Wash

Zip Code: 21240

7050 Friendship Rd
Baltimore, MD 21240

Address Warning: Despite being labeled “Washington DC” airports, none of the three airports are physically located inside the District of Columbia. DCA and IAD are in Virginia, and BWI is in Maryland.

Search questions answered

Top FAQs: DC Airport Codes & Abbreviations

What is the Washington DC airport code?

DC has three main airport codes: DCA (Reagan National), IAD (Dulles International), and BWI (Baltimore/Washington). WAS is the generic code for all three.

What is the DC airport code IATA?

The primary IATA codes are DCA, IAD, and BWI. IATA codes are the three-letter identifiers printed on your baggage tags and airline tickets.

What is the Washington DC airport code international?

IAD (Washington Dulles International Airport) is the primary international gateway. DCA handles minimal international traffic (mostly pre-cleared flights from Canada/Bahamas).

What is the DC Reagan airport code?

The airport code for Ronald Reagan Washington National Airport is DCA.

What is the DC Dulles airport code?

The airport code for Washington Dulles International Airport is IAD.

What is the DC National airport code?

“National Airport” is the local historical name for Ronald Reagan Washington National Airport, and its code is DCA.

What is the DC airport zip code?

Because there are three airports, there are three zip codes: DCA is 22202, IAD is 20166, and BWI is 21240.

What is the DC airport abbreviation WAS?

WAS is a metropolitan area code used by flight booking engines. Searching “WAS” brings up flights for DCA, IAD, and BWI simultaneously.

Does the Metro go to Dulles (IAD)?

Yes. The Silver Line extension directly serves Washington Dulles International Airport. The station is connected to the terminal via pedestrian walkways.

How do I get from BWI to Washington DC?

Take the free, 24/7 BWI courtesy shuttle to the BWI Rail Station, and catch a southbound MARC Penn Line train or an Amtrak train into Washington Union Station.

Editorial transparency

Official sources & technical audit

This article utilizes current open data from the Metropolitan Washington Airports Authority (MWAA), Maryland Aviation Administration, and WMATA to accurately detail IATA codes, ZIP codes, and Metro transit routing.

Official Source	Data verified
MWAA (flyreagan.com / flydulles.com)	Confirmed official addresses for IAD (20166) and DCA (22202), and AeroTrain layouts.
BWI Airport Official Site	Confirmed BWI zip code (21240) and the 24/7 operation of the MARC rail shuttle.
WMATA (Metro)	Verified Silver Line operations to Dulles are active and integrated at the terminal level.

Last technical audit: Late 2026. Airport transit operations, construction, and terminal layouts update frequently. Utilize the embedded official links to verify final train schedules before your journey.