Alaska Airlines flights from DCA to SEA
Find comprehensive Alaska Airlines flight information, schedules, and booking details for direct flights from DCA to SEA. Alaska Airlines operates 2-3 flights daily flights on this route.• Flight Duration: 5h 39m - 6h 13m (average flight time)• Distance: 2335 miles (3757 km) (air miles between airports)• Daily Flights: 2-3 flights (scheduled departures per day)
DCA
SEA
FLIGHT TIME
5h 39m - 6h 13m
FLIGHT DISTANCE
2335 miles (3757 km)
6h 5m - 6h 5m
08:00
17:00
2335 miles (3757 km)
March
1 (Show)
21
Alaska Airlines Flight Schedule from DCA to SEA
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
AS1 |  Alaska Airlines | 08:00 | 11:05:00 | Boeing 737-800 (winglets) Passenger/BBJ2 |
AS3 | Alaska Airlines | 17:00 | 20:05:00 | Boeing 737MAX 8 Passenger |
Alaska Airlines Monthly Flight Calendar
December 2025
Route Insights
Duration variability: Flight duration on this route can vary based on aircraft type, wind conditions, and airline scheduling. Average duration is 5h 39m - 6h 13m.
Pricing patterns: March typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 8:00, 17:00, offering more flight options and potentially better connections.
DCA - SEA flight price statistics
$608
ApproximateThe numbers are average prices found based on user searches for direct flights between the airports. It's calculated from the cheapest prices found per month for a round-trip with 1 adult and can vary depending on the amount of data we have for this particular route.
$456
Jan$552
Feb$397
Mar$708
Apr$798
May$744
Jun$858
Jul$681
Aug$558
Sep$508
Oct$634
Nov$398
DecAlaska Airlines Terminal Information
Terminal information for Alaska Airlines on this route is currently being updated. Please check back soon or contact the airports directly for terminal details.
Frequently Asked Questions about Alaska Airlines Flights
How many Alaska Airlines flights operate from DCA to SEA?
Alaska Airlines operates 2 flights from DCA to SEA.
What city does SEA airport serve?
SEA airport serves SeaTac.
How long is the Alaska Airlines flight from DCA to SEA?
The flight duration is approximately 5h 39m - 6h 13m.
What is the distance from DCA to SEA?
The distance is 2335 miles (3757 km).
What aircraft does Alaska Airlines use on this route?
Alaska Airlines uses Boeing 737-800 (winglets) Passenger/BBJ2, Boeing 737MAX 8 Passenger on this route.
Which other airlines operate on this route?
1 other airline operates on this route: Delta Air Lines.
What are the earliest and latest Alaska Airlines flight departure times?
The earliest Alaska Airlines flight departs at 08:00 and the latest departs at 17:00.
What is the cheapest month to fly Alaska Airlines from DCA to SEA?
March is typically the cheapest month to fly Alaska Airlines on this route.
What is the average price for a Alaska Airlines flight from DCA to SEA?
The average price for a round-trip Alaska Airlines flight on this route is approximately $608. Prices can vary based on booking time and demand.
How many Alaska Airlines flights operate per week on this route?
Alaska Airlines operates approximately 21 flights per week from DCA to SEA.