Direct flights from Seattle to Dulles

Did you mean Flights from Dulles to Seattle?

Seattle

United States

SEA

Seattle Tacoma International Airport

Dulles

United States

IAD

Washington Dulles International Airport

Route: Nonstop service available
Distance: 2,300 miles
Marketing airlines: 20 airlines
Aircraft: 9 aircraft types
Dates: Oct 5, 2026 – Oct 3, 2027

Observed award fares

A sample of one-way prices for one traveler from Roame’s fare cache. Points, fees, and seats describe the same observation. Availability can change; confirm with the loyalty program before transferring points.

Lowest price in this limited sample: 12,500 points + $5.00 for SEA → IAD, Economy, on 2026-10-29, booked with American Airlines. This is an observed fare, not a guaranteed price or the lowest price across all dates and programs.

Departure window: 2026-10-08 through 2026-11-06.

Recently observed award prices by route, flight, departure date, cabin, and booking program
Route / flight	Departure	Cabin	Book with	Points	Fees (USD)	Seats seen	Observed (UTC)
SEA → IAD AS366	2026-10-29	Economy	American Airlines	12,500	$5.00	3	2026-10-07 14:20
SEA → IAD AS367	2026-10-29	Economy	Alaska Atmos Rewards	12,500	$5.00	9	2026-10-07 14:18
SEA → IAD AS366	2026-10-29	Economy	Alaska Atmos Rewards	12,500	$5.00	9	2026-10-07 14:18
SEA → IAD AS367	2026-10-30	Economy	Alaska Atmos Rewards	12,500	$5.00	9	2026-10-07 14:18
SEA → IAD AS366	2026-10-30	Economy	American Airlines	12,500	$5.00	3	2026-10-07 14:20
SEA → IAD AS367	2026-10-30	Economy	American Airlines	12,500	$5.00	3	2026-10-07 14:20
SEA → IAD AS366	2026-10-30	Economy	Alaska Atmos Rewards	12,500	$5.00	9	2026-10-07 14:18
SEA → IAD AS367	2026-11-03	Economy	Alaska Atmos Rewards	12,500	$5.00	9	2026-10-08 12:49
SEA → IAD AS367	2026-11-04	Economy	Alaska Atmos Rewards	12,500	$5.00	9	2026-10-07 17:22
SEA → IAD AS737	2026-11-04	Economy	Alaska Atmos Rewards	12,500	$5.00	9	2026-10-07 17:22
SEA → IAD AS367	2026-11-06	Economy	Alaska Atmos Rewards	12,500	$5.00	9	2026-10-08 02:48
SEA → IAD UA2693	2026-10-12	Economy	United MileagePlus	15,000	$5.00	1	2026-10-07 04:46

Explore these booking programs

Search American Airlines awards American Airlines booking and transfer guide
Transfer partners in our directory: Citi ThankYou, Marriott Bonvoy, IHG Rewards. Check current eligibility and terms before transferring.
Search Alaska Atmos Rewards awards Alaska Atmos Rewards booking and transfer guide
Transfer partners in our directory: Bilt Rewards, Marriott Bonvoy, IHG Rewards, Choice Privileges. Check current eligibility and terms before transferring.
Search United MileagePlus awards United MileagePlus booking and transfer guide
Transfer partners in our directory: Chase Ultimate Rewards, Bilt Rewards, Marriott Bonvoy, Accor Live Limitless, IHG Rewards, Choice Privileges. Check current eligibility and terms before transferring.

Seattle to Dulles route overview

Seattle Tacoma International Airport (SEA) serves Seattle; Washington Dulles International Airport (IAD) serves Dulles.

The airports are 2,300 miles apart by great-circle distance.

Roame's current schedule feed shows nonstop service from SEA to IAD.

Marketing airlines listed in the current schedule, including codeshare sellers, are American Airlines (AA), Alaska Airlines (AS), Avianca (AV), Finnair (AY), Alitalia (AZ), Copa Airlines (CM), Cathay Pacific (CX), Delta Air Lines (DL), Ethiopian Airlines (ET), Iberia (IB), Japan Airlines (JL), Starlux Airlines (JX), Korean Air (KE), Lufthansa (LH), China Eastern Airlines (MU), Austrian Airlines (OS), Qatar Airways (QR), Brussels Airlines (SN), United Airlines (UA) and Virgin Atlantic (VS). This list does not identify the operating airline for each flight; check the flight details before booking.

Published schedule dates span Oct 5, 2026 – Oct 3, 2027.

Marketing airlines on the Seattle to Dulles route

These are marketing airlines, including codeshare sellers. This list does not identify the operating airline for each flight; check the flight details before booking.

Airline alliance affiliations represented: Oneworld, SkyTeam, Star Alliance

Aircraft flying from SEA to IAD

Frequently asked questions

Which airports serve the Seattle to Dulles route?

Seattle Tacoma International Airport (SEA) is the origin airport and Washington Dulles International Airport (IAD) is the destination airport.

How far is Dulles from Seattle?

SEA and IAD are approximately 2,300 miles apart by great-circle distance.

Are there direct flights from SEA to IAD?

Yes. Roame's current schedule feed shows nonstop service from SEA to IAD.

Which airlines market flights from SEA to IAD?

Which aircraft fly from SEA to IAD?

Aircraft listed in the current schedule include Airbus A220-300 (223), Airbus A321neo (32Q), 737, Boeing 737-800 (738), Boeing 737-900 / Boeing 737-900ER (739), Boeing 737-800 Winglets (73H), Boeing 737-900 Winglets (73J), Boeing 737 MAX 8 (7M8) and JET.