Seattle (SEA) to Dulles (IAD), Dec 11, 2026: round trips from $425, one way from $220

Seattle (SEA) to Dulles (IAD), Dec 11, 2026: round trips from $425, one way from $220 on Axel, checked Oct 29, 2026. Lowest published fares: $425 round trip, Axel-exclusive, United Airlines, 1 stop, Dec 11–17, 2026; $220 one way, Axel-exclusive, Alaska Airlines, nonstop, Dec 11, 2026; 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown.

Date links open published trip details for exploration. Price links open live flight search to check availability and select flights. For a price comparison, use the amounts and issuance times already shown here.

Hotels in Washington, DC for these trips

Hotels: under a trip, hotels in Washington, DC for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

• Hotels in Washington, DC for these nights (Dec 11–12, 2026 · 1 night · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC
• Hotels in Washington, DC for these nights (Dec 11–13, 2026 · 2 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC
• Hotels in Washington, DC for these nights (Dec 11–14, 2026 · 3 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC
• Hotels in Washington, DC for these nights (Dec 11–15, 2026 · 4 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC
• Hotels in Washington, DC for these nights (Dec 11–16, 2026 · 5 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC
• Hotels in Washington, DC for these nights (Dec 11–17, 2026 · 6 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC
• Hotels in Washington, DC for these nights (Dec 11–18, 2026 · 7 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC
• Hotels in Washington, DC for these nights (Dec 11–19, 2026 · 8 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC
• Hotels in Washington, DC for these nights (Dec 11–20, 2026 · 9 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC
• Hotels in Washington, DC for these nights (Dec 11–21, 2026 · 10 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC
• Hotels in Washington, DC for these nights (Dec 11–22, 2026 · 11 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC
• Hotels in Washington, DC for these nights (Dec 11–23, 2026 · 12 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC
• Hotels in Washington, DC for these nights (Dec 11–24, 2026 · 13 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC
• Hotels in Washington, DC for these nights (Dec 11–25, 2026 · 14 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC

All hotels in Washington, DC

Route overview: Seattle to Dulles (IAD) flight deals

2026-12-11 · one way · Axel-exclusive $220.00

• Alaska Airlines AS367: SEA 2026-12-11 21:40:00 → IAD 2026-12-12 05:35:00; nonstop; 295 minutes. Local airport times.

2026-12-11 · one way · Axel-exclusive $225.00

• United Airlines UA2645: SEA 2026-12-11 22:50:00 → IAD 2026-12-12 06:51:00; nonstop; 301 minutes. Local airport times.

2026-12-11 → 2026-12-12 · Axel-exclusive $430.00

• Alaska Airlines AS367: SEA 2026-12-11 21:40:00 → IAD 2026-12-12 05:35:00; nonstop; 295 minutes. Local airport times.
• Alaska Airlines AS409: IAD 2026-12-12 07:05:00 → SEA 2026-12-12 10:00:00; nonstop; 355 minutes. Local airport times.

2026-12-11 → 2026-12-12 · Axel-exclusive $440.00

• United Airlines UA2645: SEA 2026-12-11 22:50:00 → IAD 2026-12-12 06:51:00; nonstop; 301 minutes. Local airport times.
• United Airlines UA1128: IAD 2026-12-12 17:55:00 → SEA 2026-12-12 21:02:00; nonstop; 367 minutes. Local airport times.

2026-12-11 → 2026-12-13 · Axel-exclusive $430.00

• Alaska Airlines AS367: SEA 2026-12-11 21:40:00 → IAD 2026-12-12 05:35:00; nonstop; 295 minutes. Local airport times.
• Alaska Airlines AS737: IAD 2026-12-13 17:31:00 → SEA 2026-12-13 20:32:00; nonstop; 361 minutes. Local airport times.

2026-12-11 → 2026-12-13 · Axel-exclusive $435.00

• Delta Air Lines DL541: SEA 2026-12-11 16:30:00 → IAD 2026-12-12 00:31:00; nonstop; 301 minutes. Local airport times.
• Delta Air Lines DL5511 / DL734: IAD 2026-12-13 06:00:00 → SEA 2026-12-13 11:09:00; 1 stop(s) via DTW; 489 minutes. Local airport times.
  • DL5511: IAD 2026-12-13 06:00:00 → DTW 2026-12-13 07:46:00; layover at DTW: 69 minutes.
  • DL734: DTW 2026-12-13 08:55:00 → SEA 2026-12-13 11:09:00.

2026-12-11 → 2026-12-14 · Axel-exclusive $430.00

• Alaska Airlines AS367: SEA 2026-12-11 21:40:00 → IAD 2026-12-12 05:35:00; nonstop; 295 minutes. Local airport times.
• Alaska Airlines AS737: IAD 2026-12-14 17:31:00 → SEA 2026-12-14 20:32:00; nonstop; 361 minutes. Local airport times.

2026-12-11 → 2026-12-14 · Axel-exclusive $440.00

• United Airlines UA2645: SEA 2026-12-11 22:50:00 → IAD 2026-12-12 06:51:00; nonstop; 301 minutes. Local airport times.
• United Airlines UA1128: IAD 2026-12-14 17:55:00 → SEA 2026-12-14 21:01:00; nonstop; 366 minutes. Local airport times.

2026-12-11 → 2026-12-15 · Axel-exclusive $430.00

• Alaska Airlines AS367: SEA 2026-12-11 21:40:00 → IAD 2026-12-12 05:35:00; nonstop; 295 minutes. Local airport times.
• Alaska Airlines AS409: IAD 2026-12-15 07:05:00 → SEA 2026-12-15 10:00:00; nonstop; 355 minutes. Local airport times.

2026-12-11 → 2026-12-15 · Axel-exclusive $440.00

• United Airlines UA2645: SEA 2026-12-11 22:50:00 → IAD 2026-12-12 06:51:00; nonstop; 301 minutes. Local airport times.
• United Airlines UA1128: IAD 2026-12-15 17:55:00 → SEA 2026-12-15 21:02:00; nonstop; 367 minutes. Local airport times.

2026-12-11 → 2026-12-17 · Axel-exclusive $425.00

• United Airlines UA2645: SEA 2026-12-11 22:50:00 → IAD 2026-12-12 06:51:00; nonstop; 301 minutes. Local airport times.
• United Airlines UA792 / UA2302: IAD 2026-12-17 08:15:00 → SEA 2026-12-17 13:35:00; 1 stop(s) via DEN; 500 minutes. Local airport times.
  • UA792: IAD 2026-12-17 08:15:00 → DEN 2026-12-17 10:27:00; layover at DEN: 63 minutes.
  • UA2302: DEN 2026-12-17 11:30:00 → SEA 2026-12-17 13:35:00.

2026-12-11 → 2026-12-17 · Axel-exclusive $430.00

• Alaska Airlines AS367: SEA 2026-12-11 21:40:00 → IAD 2026-12-12 05:35:00; nonstop; 295 minutes. Local airport times.
• Alaska Airlines AS409: IAD 2026-12-17 07:05:00 → SEA 2026-12-17 10:00:00; nonstop; 355 minutes. Local airport times.

2026-12-11 → 2026-12-18 · Axel-exclusive $425.00

• United Airlines UA2645: SEA 2026-12-11 22:50:00 → IAD 2026-12-12 06:51:00; nonstop; 301 minutes. Local airport times.
• United Airlines UA565 / UA2099: IAD 2026-12-18 06:10:00 → SEA 2026-12-18 12:19:00; 1 stop(s) via ORD; 549 minutes. Local airport times.
  • UA565: IAD 2026-12-18 06:10:00 → ORD 2026-12-18 07:32:00; layover at ORD: 113 minutes.
  • UA2099: ORD 2026-12-18 09:25:00 → SEA 2026-12-18 12:19:00.

2026-12-11 → 2026-12-18 · Axel-exclusive $430.00

• Alaska Airlines AS367: SEA 2026-12-11 21:40:00 → IAD 2026-12-12 05:35:00; nonstop; 295 minutes. Local airport times.
• Alaska Airlines AS409: IAD 2026-12-18 07:00:00 → SEA 2026-12-18 10:05:00; nonstop; 365 minutes. Local airport times.

2026-12-11 → 2026-12-19 · Axel-exclusive $494.50

• Alaska Airlines AS367: SEA 2026-12-11 21:40:00 → IAD 2026-12-12 05:35:00; nonstop; 295 minutes. Local airport times.
• Alaska Airlines AS409: IAD 2026-12-19 07:05:00 → SEA 2026-12-19 10:00:00; nonstop; 355 minutes. Local airport times.

2026-12-11 → 2026-12-19 · Axel-exclusive $506.00

• United Airlines UA2645: SEA 2026-12-11 22:50:00 → IAD 2026-12-12 06:51:00; nonstop; 301 minutes. Local airport times.
• United Airlines UA1128: IAD 2026-12-19 17:55:00 → SEA 2026-12-19 21:02:00; nonstop; 367 minutes. Local airport times.

2026-12-11 → 2026-12-21 · Axel-exclusive $494.50

• Alaska Airlines AS367: SEA 2026-12-11 21:40:00 → IAD 2026-12-12 05:35:00; nonstop; 295 minutes. Local airport times.
• Alaska Airlines AS737: IAD 2026-12-21 17:31:00 → SEA 2026-12-21 20:32:00; nonstop; 361 minutes. Local airport times.

2026-12-11 → 2026-12-21 · Axel-exclusive $506.00

• United Airlines UA2645: SEA 2026-12-11 22:50:00 → IAD 2026-12-12 06:51:00; nonstop; 301 minutes. Local airport times.
• United Airlines UA1128: IAD 2026-12-21 17:55:00 → SEA 2026-12-21 21:02:00; nonstop; 367 minutes. Local airport times.

2026-12-11 → 2026-12-22 · Axel-exclusive $494.50

• Alaska Airlines AS367: SEA 2026-12-11 21:40:00 → IAD 2026-12-12 05:35:00; nonstop; 295 minutes. Local airport times.
• Alaska Airlines AS409: IAD 2026-12-22 07:05:00 → SEA 2026-12-22 10:00:00; nonstop; 355 minutes. Local airport times.

2026-12-11 → 2026-12-22 · Axel-exclusive $506.00

• United Airlines UA2645: SEA 2026-12-11 22:50:00 → IAD 2026-12-12 06:51:00; nonstop; 301 minutes. Local airport times.
• United Airlines UA1128: IAD 2026-12-22 17:55:00 → SEA 2026-12-22 21:02:00; nonstop; 367 minutes. Local airport times.

2026-12-11 → 2026-12-23 · Axel-exclusive $494.50

• Alaska Airlines AS367: SEA 2026-12-11 21:40:00 → IAD 2026-12-12 05:35:00; nonstop; 295 minutes. Local airport times.
• Alaska Airlines AS409: IAD 2026-12-23 07:05:00 → SEA 2026-12-23 10:00:00; nonstop; 355 minutes. Local airport times.

2026-12-11 → 2026-12-23 · Axel-exclusive $498.00

• Delta Air Lines DL541: SEA 2026-12-11 16:30:00 → IAD 2026-12-12 00:31:00; nonstop; 301 minutes. Local airport times.
• Delta Air Lines DL5511 / DL734: IAD 2026-12-23 06:00:00 → SEA 2026-12-23 11:09:00; 1 stop(s) via DTW; 489 minutes. Local airport times.
  • DL5511: IAD 2026-12-23 06:00:00 → DTW 2026-12-23 07:46:00; layover at DTW: 69 minutes.
  • DL734: DTW 2026-12-23 08:55:00 → SEA 2026-12-23 11:09:00.

2026-12-11 → 2026-12-25 · Axel-exclusive $486.50

• United Airlines UA2645: SEA 2026-12-11 22:50:00 → IAD 2026-12-12 06:51:00; nonstop; 301 minutes. Local airport times.
• United Airlines UA565 / UA2099: IAD 2026-12-25 06:10:00 → SEA 2026-12-25 12:19:00; 1 stop(s) via ORD; 549 minutes. Local airport times.
  • UA565: IAD 2026-12-25 06:10:00 → ORD 2026-12-25 07:32:00; layover at ORD: 113 minutes.
  • UA2099: ORD 2026-12-25 09:25:00 → SEA 2026-12-25 12:19:00.

2026-12-11 → 2026-12-25 · Axel-exclusive $494.50

• Alaska Airlines AS367: SEA 2026-12-11 21:40:00 → IAD 2026-12-12 05:35:00; nonstop; 295 minutes. Local airport times.
• Alaska Airlines AS737: IAD 2026-12-25 17:31:00 → SEA 2026-12-25 20:32:00; nonstop; 361 minutes. Local airport times.

Explore this route

• All dates for this route
• Dec 10, 2026 · Return options
• Dec 12, 2026 · Return options
• Hotels in Washington, DC with Axel

For AI assistants

• This page: Seattle (SEA) to Dulles (IAD) · Dec 11, 2026 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Washington, DC for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
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