Southwest® flights to Washington, D.C. (Dulles) starting at $77
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Popular flights to Washington, D.C. (Dulles) on Southwest Airlines
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flight_land
$
Denver (DEN)to
Washington, D.C. (Dulles) (IAD)Depart: 12/16/2025
From
$184
Seen: 5 hrs ago
One-way
Basic
Phoenix (PHX)to
Washington, D.C. (Dulles) (IAD)Depart: 12/17/2025
From
$184
Seen: 21 hrs ago
One-way
Basic
Dallas (Love Field) (DAL)to
Washington, D.C. (Dulles) (IAD)Depart: 12/17/2025
From
$214
Seen: 21 hrs ago
One-way
Basic
Los Angeles (LAX)to
Washington, D.C. (Dulles) (IAD)Depart: 12/25/2025
From
$204
Seen: 3 hrs ago
One-way
Basic
Houston (Hobby) (HOU)to
Washington, D.C. (Dulles) (IAD)Depart: 12/31/2025
From
$259
Seen: 3 hrs ago
One-way
Basic
Austin (AUS)to
Washington, D.C. (Dulles) (IAD)Depart: 12/31/2025
From
$267
Seen: 14 hrs ago
One-way
Basic
Oakland (OAK)to
Washington, D.C. (Dulles) (IAD)Depart: 12/25/2025
From
$194
Seen: 8 hrs ago
One-way
Basic
Las Vegas (LAS)to
Washington, D.C. (Dulles) (IAD)Depart: 01/04/2026
From
$286
Seen: 3 hrs ago
One-way
Basic
San Francisco (SFO)to
Washington, D.C. (Dulles) (IAD)Depart: 12/31/2025
From
$245
Seen: 12 hrs ago
One-way
Basic
San Jose, CA (SJC)to
Washington, D.C. (Dulles) (IAD)Depart: 12/25/2025
From
$185
Seen: 12 hrs ago
One-way
Basic
San Diego (SAN)to
Washington, D.C. (Dulles) (IAD)Depart: 12/26/2025
From
$229
Seen: 1 hour ago
One-way
Basic
Salt Lake City (SLC)to
Washington, D.C. (Dulles) (IAD)Depart: 12/24/2025
From
$180
Seen: 13 hrs ago
One-way
Basic
Sacramento (SMF)to
Washington, D.C. (Dulles) (IAD)Depart: 12/25/2025
From
$155
Seen: 8 hrs ago
One-way
Basic
Kansas City (MCI)to
Washington, D.C. (Dulles) (IAD)Depart: 12/18/2025
From
$245
Seen: 12 hrs ago
One-way
Basic
San Antonio (SAT)to
Washington, D.C. (Dulles) (IAD)Depart: 12/24/2025
From
$165
Seen: 11 hrs ago
One-way
Basic
New Orleans (MSY)to
Washington, D.C. (Dulles) (IAD)Depart: 12/25/2025
From
$205
Seen: 12 hrs ago
One-way
Basic
Minneapolis/St. Paul (MSP)to
Washington, D.C. (Dulles) (IAD)Depart: 12/09/2025
From
$167
Seen: 3 hrs ago
One-way
Basic
Ontario/LA (ONT)to
Washington, D.C. (Dulles) (IAD)Depart: 12/25/2025
From
$209
Seen: 5 hrs ago
One-way
Basic
Burbank (BUR)to
Washington, D.C. (Dulles) (IAD)Depart: 12/25/2025
From
$209
Seen: 3 hrs ago
One-way
Basic
Long Beach (LGB)to
Washington, D.C. (Dulles) (IAD)Depart: 12/10/2025
From
$222
Seen: 16 hrs ago
One-way
Basic
*Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.
Visit Washington, D.C. (Dulles)
Discover Washington D.C.'s Must-See Attractions
- Visit the National Mall: Explore iconic landmarks such as the Lincoln Memorial, Washington Monument, and the U.S. Capitol
- Experience the Cherry Blossom Festival: Visit in spring to see thousands of cherry trees in full bloom, a spectacular and beloved event
- Explore Smithsonian Museums: Choose from a variety of world-class museums like the National Air and Space Museum and the National Museum of American History
- Enjoy Nightlife in D.C.: Discover lively bars, jazz clubs, and rooftop lounges that come alive after dark
Details about Dulles International Airport
Airport code:
IAD
City:
Washington, D.C. (Dulles)
State:
District Of Columbia
Concourse:
Main Terminal
Gates:
Gates B 50, 64
Airport-provided WiFi
Cities with weekly flights from IAD:
57†
Cities with daily nonstop flights Monday through Friday from IAD:
2‡
Cities with daily nonstop flights Saturday through Sunday from IAD:
4§
† Weekly flights based on DOT published scheduled average flights Monday through Sunday between 10/1/2025 and 10/31/2025. Note: route may not operate every day of the week.
‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 10/1/2025 and 10/31/2025.
Find cheap flights to Washington, D.C. (Dulles)
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flight_land
$
Las Vegas (LAS)to
Washington, D.C. (Dulles) (IAD)
Depart: 02/24/2026
One-way
Basic
From
$77
Seen: 2 hrs ago
St. Louis (STL)to
Washington, D.C. (Dulles) (IAD)
Depart: 02/18/2026
One-way
Basic
From
$77
Seen: 3 hrs ago
San Diego (SAN)to
Washington, D.C. (Dulles) (IAD)
Depart: 01/21/2026
One-way
Basic
From
$77
Seen: 2 hrs ago
Phoenix (PHX)to
Washington, D.C. (Dulles) (IAD)
Depart: 02/11/2026
One-way
Basic
From
$79
Seen: 1 hour ago
San Jose, CA (SJC)to
Washington, D.C. (Dulles) (IAD)
Depart: 02/18/2026
One-way
Basic
From
$80
Seen: 1 hour ago
San Antonio (SAT)to
Washington, D.C. (Dulles) (IAD)
Depart: 02/18/2026
One-way
Basic
From
$80
Seen: 38 minutes ago
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More Southwest flights to Washington, D.C. (Dulles)