Direct flights from Dulles to Seattle

Did you mean Flights from Seattle to Dulles?

Dulles

United States

IAD

Washington Dulles International Airport

Seattle

United States

SEA

Seattle Tacoma International Airport

Route: Nonstop service available
Distance: 2,300 miles
Marketing airlines: 20 airlines
Aircraft: 8 aircraft types
Dates: Oct 19, 2026 – Oct 17, 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 IAD → SEA, Economy, on 2026-11-04, booked with American Airlines. This is an observed fare, not a guaranteed price or the lowest price across all dates and programs.

Departure window: 2026-10-23 – 2026-11-21.

IAD → SEAEconomy
AS409
12,500 points+ $5.00
Departure
2026-11-04
Seats seen
3
Book with
American Airlines
Observed (UTC)
2026-10-22 05:01
IAD → SEAEconomy
AS737
12,500 points+ $5.00
Departure
2026-11-14
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 21:52
IAD → SEAEconomy
AS409
12,500 points+ $5.00
Departure
2026-11-14
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 21:52
IAD → SEAEconomy
AS409
12,500 points+ $5.00
Departure
2026-11-17
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 16:37
IAD → SEAEconomy
AS737
12,500 points+ $5.00
Departure
2026-11-17
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 16:37
IAD → SEAEconomy
AS409
12,500 points+ $5.00
Departure
2026-11-19
Seats seen
7
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 00:19
IAD → SEAEconomy
UA1128
15,000 points+ $5.00
Departure
2026-10-24
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-10-22 11:10
IAD → SEAEconomy
UA1128
15,000 points+ $5.00
Departure
2026-10-31
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-10-22 03:49
IAD → SEAEconomy
UA1128
15,000 points+ $5.00
Departure
2026-11-03
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-10-21 14:24
IAD → SEAEconomy
UA1128
15,000 points+ $5.00
Departure
2026-11-12
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-10-22 23:46
IAD → SEAEconomy
UA1128
15,000 points+ $5.00
Departure
2026-11-19
Seats seen
1
Book with
United MileagePlus
Observed (UTC)
2026-10-22 05:38
IAD → SEAEconomy
AS409
17,500 points+ $5.00
Departure
2026-11-12
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 20:22

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Dulles to Seattle route overview

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

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

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

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 19, 2026 – Oct 17, 2027.

Marketing airlines on the Dulles to Seattle 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.

American Airlines (AA)Codeshare only
Avianca (AV)Codeshare only
Finnair (AY)Codeshare only
Alitalia (AZ)Codeshare only
Copa Airlines (CM)Codeshare only
Cathay Pacific (CX)Codeshare only
Ethiopian Airlines (ET)Codeshare only
Iberia (IB)Codeshare only
Japan Airlines (JL)Codeshare only
Starlux Airlines (JX)Codeshare only
Korean Air (KE)Codeshare only
Lufthansa (LH)Codeshare only
China Eastern Airlines (MU)Codeshare only
Austrian Airlines (OS)Codeshare only
Brussels Airlines (SN)Codeshare only
Virgin Atlantic (VS)Codeshare only

Airline alliance affiliations represented: Oneworld, SkyTeam, Star Alliance

Aircraft flying from IAD to SEA

Frequently asked questions

Which airports serve the Dulles to Seattle route?

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

How far is Seattle from Dulles?

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

Are there direct flights from IAD to SEA?

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

Which airlines market flights from IAD to SEA?

Which aircraft fly from IAD to SEA?

Aircraft listed in the current schedule include Airbus A220-300 (223), Boeing 737-800 (738), Boeing 737-900 / Boeing 737-900ER (739), Boeing 737-800 Winglets (73H), Boeing 737-900 Winglets (73J), Boeing 757-300 (753), Boeing 737 MAX 8 (7M8) and JET.