Dulles
IAD · KIADWashington Dulles International Airport
Passengers a year
27.3M
#22 busiest in the U.S.
169
nonstop destinations
112
airlines
343
departures a day
83.2%
arrivals on time
1.4%
flights cancelled
81.1%
load factor
Airlines
United Airlines is the largest carrier at Dulles, with 67% of all passengers. 112 airlines fly from here.
Share of passengers · each carrier as a slice of the whole airport
United Airlines holds 67% of the airport — the 11th most concentrated of 30 large hubs. The nearest comparison is PHL at 67%.
| Airline | Share | Passengers | Seats YoY | ||
|---|---|---|---|---|---|
UA | 67.3% | 18.4M | 127 | 85.1% | +0.9% |
DL | 3.6% | 995.6K | 8 | 79.1% | -1.3% |
F9 Frontier76% full | 1.9% | 527.5K | 8 | 71.4% | +96.5% |
AA | 1.9% | 504.8K | 4 | 71.2% | +13.1% |
LH Lufthansa81% full | 1.7% | 455.8K | 2 | — | +0.2% |
+Other airlines | 23.6% | 6.4M | — | — | — |
Share, passengers and destinations count each airline’s own flights plus the regional flying sold under its brand. On-time covers the airline's own aircraft only — regional affiliates report to the government separately. Seats year on year compares the latest twelve months against the twelve before them.
Destinations
104 domestic and 65 international nonstop destinations from Dulles, across 52 countries.
63% domestic · 37% international · by departing passengers
Top domestic destinations
United Airlines · Southwest Airlines
469K469,046 departing · 84% full
United Airlines
Delta Air Lines · United Airlines · Frontier Airlines
409.4K409,386 departing · 86% full
United Airlines · American Airlines
United Airlines · Frontier Airlines
United Airlines
United Airlines
Alaska Airlines · United Airlines · Delta Air Lines
260.8K260,791 departing · 84% full
American Airlines · United Airlines · Frontier Airlines
United Airlines
Top international destinations
London, United Kingdom (LHR)
402.9K402,855 departing · 801K800,971 both ways
British Airways · United Airlines · Virgin Atlantic
Frankfurt am Main, Germany (FRA)
316.7K316,740 departing · 626.4K626,418 both ways
United Airlines · Lufthansa
San Salvador, El Salvador (SAL)
315.5K315,527 departing · 617.1K617,085 both ways
Avianca El Salvador · Volaris El Salvador · United Airlines · Avianca Costa Rica
Paris, France (CDG)
253.9K253,949 departing · 493.4K493,399 both ways
Air France · United Airlines
Istanbul, Turkey (IST)
178.7K178,655 departing · 358.1K358,119 both ways
Turkish Airlines
Munich, Germany (MUC)
167.6K167,591 departing · 332.5K332,516 both ways
Lufthansa · United Airlines
Tocumen, Panama (PTY)
154.8K154,837 departing · 303K302,991 both ways
Copa Airlines
Dublin, Ireland (DUB)
151.8K151,763 departing · 308.1K308,108 both ways
Aer Lingus · United Airlines
Lisbon, Portugal (LIS)
145.7K145,692 departing · 290.8K290,761 both ways
TAP-TAP Air Portugal · United Airlines
Tokyo, Japan (HND)
137K137,043 departing · 277.7K277,729 both ways
United Airlines · All Nippon Airways
All nonstop destinations
169 nonstop · 50 airlines · 104 domestic / 65 intl
Delta Connection · operated by Endeavor Air, Republic Airways, SkyWest Airlines
United Express · operated by CommuteAir, GoJet Airlines, Mesa Airlines, Republic Airways, SkyWest Airlines
Aircraft
By share of departures at Dulles.
Body class · share of departures
- Regional
19,282 departures · 82% full
15.4%
- Regional
17,423 departures · 85% full
13.9%
- Narrowbody
11,486 departures · 83% full
9.2%
- Narrowbody
11,273 departures · 83% full
9.0%
Bombardier CRJ-550
7,217 departures · 82% full
5.8%
- Narrowbody
5,880 departures · 79% full
4.7%
- Narrowbody
5,589 departures · 83% full
4.5%
- Narrowbody
4,013 departures · 81% full
3.2%
- Narrowbody
3,843 departures · 81% full
3.1%
- Narrowbody
3,311 departures · 84% full
2.6%
When Dulles is busiest
Departures by month over the trailing year. Bars scale to the busiest month.
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Departures a month · peak August 2025
Annual passengers since 1990
Total passengers, arriving and departing, in every year on record.
Passengers a year
Every year
- 1990
- 10,029,535
- 1991
- 10,486,009
- 1992
- 10,130,686
- 1993
- 9,183,600
- 1994
- 9,655,162
- 1995
- 10,478,409
- 1996
- 11,014,021
- 1997
- 11,652,289
- 1998
- 12,576,153
- 1999
- 15,638,263
- 2000
- 15,778,621
- 2001
- 13,905,584
- 2002
- 14,274,119
- 2003
- 16,406,977
- 2004
- 22,185,643
- 2005
- 26,340,927
- 2006
- 22,454,287
- 2007
- 23,992,335
- 2008
- 23,170,346
- 2009
- 22,556,923
- 2010
- 22,949,572
- 2011
- 22,473,122
- 2012
- 21,859,587
- 2013
- 21,347,225
- 2014
- 20,993,348
- 2015
- 20,970,412
- 2016
- 21,355,323
- 2017
- 22,233,443
- 2018
- 23,493,221
- 2019
- 24,019,866
- 2020
- 7,892,355
- 2021
- 14,527,504
- 2022
- 20,698,191
- 2023
- 24,472,462
- 2024
- 26,497,286
- 2025
- 27,932,034
- 2026
- 15,707,667 so far
Arriving on time
Of every 100 flights landing at Dulles, 83 touch down within 15 minutes of schedule, 16 arrive late, and 1 is cancelled.
Every 100 arrivals
14 min
average delay
804
flights cancelled
56.9K
arrivals measured
What holds flights up
Share of delay minutes
Most reliable here
Republic Airways 85.2%
Least reliable here
Southwest Airlines 68.7%
Among US airports
#22
On time, month by month
A
S
O
N
D
J
F
M
A
M
J
J
Darker is better · 76.2%–88.9%
The weak spot is July 2026, when 76.2% of arrivals landed on time — 7 points below the year. The strongest was April 2026 at 88.9%.
Frequently asked
How busy is Washington Dulles International Airport (IAD)?
Washington Dulles International Airport handled about 27.3M passengers over the trailing 12 months, ranking #22 among U.S. airports by passengers, with roughly 343 departures a day.
Which airline is the largest at Washington Dulles International Airport (IAD)?
United Airlines is the largest carrier at Dulles (IAD), flying about 67% of its passengers. 112 airlines serve Dulles in total.
How many places can you fly nonstop from Washington Dulles International Airport (IAD)?
Dulles (IAD) has 169 nonstop destinations — 104 domestic and 65 international across 52 countries.
How often do flights arrive on time at Washington Dulles International Airport (IAD)?
About 83.2% of flights arriving at Dulles (IAD) touch down within 15 minutes of schedule, per US DOT figures. About 1.4% are cancelled.
What aircraft flies most from Washington Dulles International Airport (IAD)?
The Embraer E175 flew the largest share of departures from Dulles (IAD), about 15% of the total.
Trip reports on YouTube
Fliers post trip reports from flights through Dulles (IAD) to YouTube. These three were matched automatically from public YouTube listings — The Frequent Flier does not host, review, or endorse them.
Genki's Travels
Korean Air | B777-300ER | Business Class | Seoul (ICN) to Washington DC (IAD) | Trip Report
35:56 · May 2026
Jviation
Is This One of the BEST Transatlantic Economy Seats? United 767-300ER Trip Report | AMS-IAD
14:46 · Apr 2025
QFS Aviation
TRIP REPORT | Delta Airlines - MD 88 - Atlanta (ATL) to Washington DC (IAD) | Economy
17:11 · Jul 2020
Source: YouTube. Titles, thumbnails, and channel names come from YouTube. Playing a video loads the YouTube player, and using it means you agree to the YouTube Terms of Service; the Google Privacy Policy applies.
Departing counts passengers leaving Dulles; international destinations also show both directions. Data: traffic August 2025 – July 2026, on-time August 2025 – July 2026. Source: US DOT Bureau of Transportation Statistics (T-100 Segment, On-Time Performance).