Market · U.S. Airport Market Profile

Washington (IAD)

U.S. flights only 12 months ending April 2026 BTS source data through April 2026
Arriving passengers
8.72M
▲ 4.38% year over year · Rank No. 31
Departing passengers
8.63M
▲ 4.11% year over year · Rank No. 31
Passengers daily each way
23,766
Average passengers per direction per day
Scheduled departures
97,333
▲ 5.59% year over year · Rank No. 25 · 267 daily
Freight and mail
185M lb.
▼ 6.91% year over year · Rank No. 51
Scheduled carriers
23
▲ 4.55% year over year

Airline Market Share

Total passengers · 17.35 million

April 2026
United58.47%
10.14 million passengers
Other26.52%
4.60 million passengers
Mesa5.88%
1.02 million passengers
Delta3.82%
0.66 million passengers
Frontier2.73%
0.47 million passengers
Alaska2.58%
0.45 million passengers

Busiest U.S. Destinations

Passengers in thousands, compared with the prior 12-month period

Top 10
1
DENDenver, CO
602.74k826 PDEW
▲ 1.1%
2
SFOSan Francisco, CA
474.30k650 PDEW
▼ 4.6%
3
ATLAtlanta, GA
445.81k611 PDEW
▲ 9.0%
4
LAXLos Angeles, CA
409.99k562 PDEW
▼ 9.5%
5
MCOOrlando, FL
332.66k456 PDEW
▲ 17.8%
6
ORDChicago, IL
285.24k391 PDEW
▲ 15.3%
7
SEASeattle, WA
272.32k373 PDEW
▼ 13.2%
8
IAHHouston, TX
263.32k361 PDEW
▲ 3.9%
9
DFWDallas/Fort Worth, TX
256.32k351 PDEW
▲ 10.1%
10
BOSBoston, MA
225.31k309 PDEW
▲ 5.5%
Total passengers17.35 million
Largest carrierUnited · 58.5%
Largest U.S. destinationDenver (DEN)
Average departures267 per day

Passenger History

Rolling 12-month arriving and departing passengers

Growing monthly

Operations and Cargo History

Scheduled departures and freight/mail volume

BTS

Flightline Insight

IAD handled 17.35 million arriving and departing passengers during the latest 12-month reporting period, up 4.4% year over year. United was the largest scheduled carrier with 58.5% of reported passengers. The busiest reported U.S. destinations were Denver (DEN), San Francisco (SFO) and Atlanta (ATL).

Data note: Passenger totals represent scheduled enplaned revenue passengers on U.S. flights. PDEW is calculated as total arriving and departing passengers divided by two directions and 365 days. Carrier shares are based on BTS-reported scheduled enplaned revenue passengers. Freight and mail include scheduled and nonscheduled activity. Destination figures are BTS-reported passenger totals in thousands; route PDEW is calculated from the latest rolling 12-month passenger total. Historical charts retain each monthly BTS endpoint as future updates are generated.