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

United Airlines, Alaska Airlines, and Delta Air Lines fly nonstop between Seattle (SEA) and Washington (IAD), roughly 75 times a week. Long-haul cabins on a corridor this busy are large but never idle: premium cabin inventory reshuffles around every schedule change, and the best dates go first. 2LNR tracks confirmed upgrade and award space on Alaska Airlines and Delta Air Lines, on every SEA to IAD 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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75
Nonstop flights a week
2,300 mi
Nonstop distance
Free
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Seattle to Washington flight schedule

Scheduled nonstop departures for SEA to IAD, 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 (IAD)
Date Flight Airline Departs SEA Arrives IAD Duration Aircraft
UA 1523United Airlines08:1016:165h 6m7M9
UA 2463United Airlines08:1516:245h 9m7M8
AS 737Alaska Airlines, Inc.08:4116:545h 13m73J
UA 2131United Airlines13:0021:065h 6m738
DL 541Delta Air Lines14:5222:565h 4m223
AS 675Alaska Airlines, Inc.15:5623:595h 3m73J
AS 406Alaska Airlines, Inc.16:0123:594h 58m73J
AS 367Alaska Airlines, Inc.21:3505:405h 5m73J
UA 264United Airlines23:2007:225h 2m7M9
UA 1523United Airlines08:1016:165h 6m7M9
UA 2463United Airlines08:1516:245h 9m7M8
AS 737Alaska Airlines, Inc.08:4116:545h 13m7M9
UA 2131United Airlines13:0021:065h 6m738
DL 541Delta Air Lines14:5222:565h 4m223
AS 675Alaska Airlines, Inc.15:5623:595h 3m73J
AS 406Alaska Airlines, Inc.16:0123:594h 58m73J
AS 367Alaska Airlines, Inc.21:3505:405h 5m73J
UA 2467United Airlines23:0407:075h 3m7M9
UA 2483United Airlines23:0407:095h 5m320
UA 264United Airlines23:2007:225h 2m7M9
UA 1523United Airlines08:1016:165h 6m7M9
UA 2463United Airlines08:1516:245h 9m7M8
AS 737Alaska Airlines, Inc.08:4116:545h 13m7M8
UA 2131United Airlines13:0021:065h 6m738
DL 541Delta Air Lines14:5222:565h 4m223
AS 675Alaska Airlines, Inc.15:5623:595h 3m73J
AS 406Alaska Airlines, Inc.16:0123:594h 58m73J
AS 367Alaska Airlines, Inc.21:3505:405h 5m73J
UA 2467United Airlines23:0407:075h 3m7M9
UA 2483United Airlines23:0407:075h 3m7M9
UA 264United Airlines23:2007:225h 2m7M9
UA 1523United Airlines08:1016:165h 6m7M9
UA 2463United Airlines08:1516:245h 9m7M8
AS 737Alaska Airlines, Inc.08:4116:545h 13m7M9
UA 2131United Airlines13:0021:065h 6m738
DL 541Delta Air Lines14:5222:565h 4m223
AS 675Alaska Airlines, Inc.15:5623:595h 3m73J
AS 406Alaska Airlines, Inc.16:0123:594h 58m73J
AS 367Alaska Airlines, Inc.21:3505:405h 5m73J
UA 2467United Airlines23:0407:075h 3m7M9

Showing the first 40 of 74 scheduled SEA to IAD departures across the next 7 days with service. Every remaining date is 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 IAD date on the interactive map

Confirmed upgrade & award space on SEA to IAD 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 IAD 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 IAD on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Seattle to Washington nonstop

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

See SEA to IAD on the interactive map →

Frequently asked questions about SEA to IAD

How far is Washington from Seattle?
SEA to IAD covers about 2,300 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 IAD?
United Airlines, 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 IAD?
About 75 nonstop flights a week run between Seattle and Washington in the current schedule, operated by United Airlines, 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 IAD depart?
Scheduled SEA to IAD nonstops in the next 7 days with service leave between 08:10 and 23:20, 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 IAD?
Open the SEA to IAD 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 IAD 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.

Get started free