Seattle to Washington (SEA-DCA): nonstop upgrade & award space

Alaska Airlines and Delta Air Lines fly nonstop between Seattle (SEA) and Washington (DCA), roughly 21 times a week. Alaska Airlines carries most of this long-haul schedule, so one carrier's release pattern decides when premium space appears, and it is rarely all at once. 2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines, on every SEA to DCA departure, so you know which flights have space before you book.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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21
Nonstop flights a week
2,322 mi
Nonstop distance
Free
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Seattle to Washington flight schedule

Scheduled nonstop departures for SEA to DCA, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Seattle (SEA) to Washington (DCA)
Date Flight Airline Departs SEA Arrives DCA Duration Aircraft
DL 786Delta Air Lines07:2015:325h 12m32Q
AS 4Alaska Airlines, Inc.08:0016:275h 27m7M8
AS 2Alaska Airlines, Inc.13:4621:595h 13m73H
DL 786Delta Air Lines07:2015:325h 12m32Q
AS 4Alaska Airlines, Inc.08:0016:275h 27m73H
AS 2Alaska Airlines, Inc.13:4621:595h 13m73H
DL 786Delta Air Lines07:2015:325h 12m32Q
AS 4Alaska Airlines, Inc.08:0016:275h 27m73H
AS 2Alaska Airlines, Inc.13:4621:595h 13m73H
DL 786Delta Air Lines07:2015:325h 12m32Q
AS 4Alaska Airlines, Inc.08:0016:275h 27m73H
AS 2Alaska Airlines, Inc.13:4621:595h 13m73H
DL 786Delta Air Lines07:2015:325h 12m32Q
AS 4Alaska Airlines, Inc.08:0016:275h 27m73H
AS 2Alaska Airlines, Inc.13:4621:595h 13m73H
DL 786Delta Air Lines07:2015:325h 12m32Q
AS 4Alaska Airlines, Inc.08:0016:275h 27m73H
AS 2Alaska Airlines, Inc.13:4621:595h 13m73H
DL 786Delta Air Lines07:2015:325h 12m32Q
AS 4Alaska Airlines, Inc.08:0016:275h 27m73H
AS 2Alaska Airlines, Inc.13:4621:595h 13m73H

Showing all 21 scheduled SEA to DCA departures across the next 7 days with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every SEA to DCA date on the interactive map

Confirmed upgrade & award space on SEA to DCA departures

2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines, segment by segment and date by date. Open the calendar for Seattle to Washington to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each SEA to DCA departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See SEA to DCA on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Seattle to Washington nonstop

Carriers operating SEA to DCA nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See SEA to DCA on the interactive map →

Frequently asked questions about SEA to DCA

How far is Washington from Seattle?
SEA to DCA covers about 2,322 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from SEA to DCA?
Alaska Airlines and Delta Air Lines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines.
How many flights a week are there from SEA to DCA?
About 21 nonstop flights a week run between Seattle and Washington in the current schedule, operated by Alaska Airlines and Delta Air Lines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from SEA to DCA depart?
Scheduled SEA to DCA nonstops in the next 7 days with service leave between 07:20 and 13:46, local time at Seattle. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
How do I check upgrade or award availability on SEA to DCA?
Open the SEA to DCA route on the interactive map or the matrix to see confirmed upgrade and award space by date on Alaska Airlines and Delta Air Lines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss SEA to DCA upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

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