Flights operate between Washington (IAD) and SeaTac (SEA).
1 airline operates this route with 3-4 flights daily flights.
Average flight time is 5h 35m - 6h 04m.
Route distance is 2313 miles (3722 km).
Route Distance
2313 miles (3722 km)
Average Duration
5h 35m - 6h 04m
Airlines Operating This Route
United Airlines
Flight Frequency
Daily Flights
3-4 flights
Weekly Flights
35
Typical Departure Time Ranges
Earliest Departure
17:55
Latest Departure
17:55
Route Intelligence Dashboard
Overall Connectivity Score
35
ModerateRoute Diversity
1
Direct Routes
United Airlines serves 1 destination from IAD
Weekly Frequency
7
Weekly Flights
Trend: Stable
Top 1 Most Frequent Routes - Details
| Route | Weekly Flights | Duration | Distance | Reliability |
|---|---|---|---|---|
| IAD → SeaTac (SEA) (SEA) | 7/week | 5h 35m - 6h 04m | 2,313 km | Seasonal |
Flight Schedule & Filters
United Airlines flights from Washington (IAD) to SeaTac (SEA)
United Airlines operates scheduled nonstop flights between Washington (IAD) and SeaTac (SEA). United Airlines operates 3-4 flights daily flights on this route.• Flight Duration: 5h 35m - 6h 04m (average flight time)• Distance: 2313 miles (3722 km) (air miles between airports)• Daily Flights: 3-4 flights (scheduled departures per day)
Washington (IAD)
US
SeaTac (SEA)
US
FLIGHT TIME
5h 35m - 6h 04m
FLIGHT DISTANCE
2313 miles (3722 km)
5h 59m - 5h 59m
17:55
17:55
2313 miles (3722 km)
January
1 (Show)
35
United Airlines Terminal Information & Contact
Departure Terminal - Washington (IAD)
Terminal: 1
Phone: 1-800-864-8331
Location: 1, Washington, US
Arrival Terminal - SeaTac (SEA)
Terminal: 1
Phone: 1-800-864-8331
Location: 1, Seattle, US
United Airlines Flight Schedule from Washington (IAD) to SeaTac (SEA)
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
UA326 |  United Airlines | 17:55 | 20:54:00 | Boeing 737-800 Passenger |
United Airlines Monthly Flight Calendar
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United Airlines Terminal Information
Departure Terminal at Washington (IAD):
• Terminal : United Airlines operates from this terminal
Terminal 1:
• United Airlines Terminal Phone: 1-800-864-8331
Arrival Terminal at SeaTac (SEA):
• Terminal : United Airlines operates from this terminal
Terminal 1:
• United Airlines Terminal Phone: 1-800-864-8331
United Airlines Contact Information and Customer Services
United Airlines Address
233 S. Wacker Drive
Chicago, IL 60606, United States
Customer Service Phone
+1-800-864-8331Official Website
united.comFrequently Asked Questions
How many United Airlines flights operate from Washington (IAD) to Seattle (SEA)?
United Airlines operates 1 flight from Washington (IAD) to Seattle (SEA).
What city does Seattle (SEA) airport serve?
Seattle (SEA) airport serves SeaTac, US.
How long is the United Airlines flight from Washington (IAD) to Seattle (SEA)?
The flight duration is approximately 5h 35m - 6h 04m.
What is the distance from Washington (IAD) to Seattle (SEA)?
The distance is 2313 miles (3722 km).
What aircraft does United Airlines use on this route?
United Airlines uses Boeing 737-800 Passenger on this route.
Which other airlines operate on this route?
2 other airlines operate on this route: Delta Air Lines, Alaska Airlines.
Which terminal does United Airlines use at Washington (IAD)?
United Airlines flights from Washington (IAD) depart from Terminal 1. Terminal 1 phone: 1-800-864-8331.
View all United Airlines flights to Washington (IAD) →
Popular United Airlines routes from Washington include multiple destinations.
Route data verified regularly by Triposia Travel Research Team.