Alaska Airlines flights from Washington (IAD) to SeaTac (SEA)
Find comprehensive Alaska Airlines flight information, schedules, and booking details for direct flights from Washington (IAD), US to SeaTac (SEA), US. Alaska 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 54m - 5h 56m
07:38
18:34
2313 miles (3722 km)
January
1 (Show)
35
Concourse A (IAD)
Terminal 1 (SEA)
Alaska Airlines Flight Schedule from Washington (IAD) to SeaTac (SEA)
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
AS351 |  Alaska Airlines | 07:38 | 10:32:00 | Boeing 737-900 (winglets) Passenger/BBJ3 |
AS409 | Alaska Airlines | 18:34 | 21:30:00 | Boeing 737-900 (winglets) Passenger/BBJ3 |
Alaska Airlines Monthly Flight Calendar
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Route Insights
Duration variability: Flight duration on this route can vary based on aircraft type, wind conditions, and airline scheduling. Average duration is 5h 35m - 6h 04m.
Pricing patterns: January typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 7:00, 18:00, offering more flight options and potentially better connections.
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Alaska Airlines Policy Highlights
Baggage Policy
Checked baggage allowance varies depending on fare type and route. Additional charges may apply for excess baggage.
For detailed baggage policies, visit Alaska Airlines airline page or Alaska Airlines official website.
Check-in Information
Online check-in available 24 hours before departure.
Alaska Airlines Terminal Information
Departure Terminal at Washington (IAD):
• Alaska Airlines flights from Washington (IAD) depart from Terminal Concourse A
• Terminal Concourse A: Alaska Airlines operates from this terminal
Arrival Terminal at SeaTac (SEA):
• Alaska Airlines flights to SeaTac (SEA) arrive at Terminal Terminal 1
• Terminal Terminal 1: Alaska Airlines operates from this terminal
Frequently Asked Questions about Alaska Airlines Flights
How many Alaska Airlines flights operate from Washington (IAD) to Seattle (SEA)?
Alaska Airlines operates 2 flights from Washington (IAD) to Seattle (SEA).
What city does Seattle (SEA) airport serve?
Seattle (SEA) airport serves SeaTac, US.
How long is the Alaska 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 Alaska Airlines use on this route?
Alaska Airlines uses Boeing 737-900 (winglets) Passenger/BBJ3 on this route.
Which other airlines operate on this route?
2 other airlines operate on this route: Delta Air Lines, United Airlines.
What are the earliest and latest Alaska Airlines flight departure times?
The earliest Alaska Airlines flight departs at 07:38 and the latest departs at 18:34.
Which terminal does Alaska Airlines use at Washington (IAD)?
Alaska Airlines flights from Washington (IAD) depart from Terminal Concourse A.
Which terminal does Alaska Airlines use at Seattle (SEA)?
Alaska Airlines flights to Seattle (SEA) arrive at Terminal Terminal 1.
What is the cheapest month to fly Alaska Airlines from Washington (IAD) to Seattle (SEA)?
January is typically the cheapest month to fly Alaska Airlines on this route.
What is the average price for a Alaska Airlines flight from Washington (IAD) to Seattle (SEA)?
The average price for a round-trip Alaska Airlines flight on this route is approximately $419. Prices can vary based on booking time and demand.
How many Alaska Airlines flights operate per week on this route?
Alaska Airlines operates approximately 35 flights per week from Washington (IAD) to Seattle (SEA).