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.
Departure window: through .
| Route / flight | Departure | Cabin | Book with | Points | Fees (USD) | Seats seen | Observed (UTC) |
|---|---|---|---|---|---|---|---|
| IAD → SEA AS375 | Economy | Alaska Atmos Rewards | 12,500 | $5.00 | 9 | ||
| IAD → SEA AS409 | Economy | Alaska Atmos Rewards | 12,500 | $5.00 | 9 | ||
| IAD → SEA AS409 | Economy | Alaska Atmos Rewards | 12,500 | $5.00 | 9 | ||
| IAD → SEA AS375 | Economy | Alaska Atmos Rewards | 12,500 | $5.00 | 9 | ||
| IAD → SEA UA1128 | Economy | United MileagePlus | 15,000 | $5.00 | 1 | ||
| IAD → SEA AS409 | Economy | Alaska Atmos Rewards | 15,000 | $5.00 | 9 | ||
| IAD → SEA UA1128 | Economy | United MileagePlus | 15,000 | $5.00 | 1 | ||
| IAD → SEA UA1824 | Economy | United MileagePlus | 15,000 | $5.00 | 1 | ||
| IAD → SEA UA1128 | Economy | Virgin Australia | 19,000 | $9.00 | 9 | ||
| IAD → SEA UA1128 | Economy | Virgin Australia | 19,000 | $9.00 | 9 | ||
| IAD → SEA UA1824 | Economy | Virgin Australia | 19,000 | $9.00 | 9 | ||
| IAD → SEA UA1128 | Economy | Virgin Australia | 19,000 | $9.00 | 9 |
Did you mean Flights from Seattle to Dulles?
Dulles
United StatesIAD
Washington Dulles International Airport
Seattle
United StatesSEA
Seattle Tacoma International Airport
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 Sep 21, 2026 – Sep 19, 2027.
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
Washington Dulles International Airport (IAD) is the origin airport and Seattle Tacoma International Airport (SEA) is the destination airport.
IAD and SEA are approximately 2,300 miles apart by great-circle distance.
Yes. 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.
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.