Seattle (SEA) to Dulles (IAD) · Dec 6, 2026 · return Dec 11, 2026

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Route overview: Seattle to Dulles (IAD) flight deals

2026-12-06 → 2026-12-11 · Axel-exclusive $430.00

• Alaska Airlines AS737: SEA 2026-12-06 08:15:00 → IAD 2026-12-06 16:15:00; nonstop; 300 minutes. Local airport times.
• Alaska Airlines AS409: IAD 2026-12-11 07:00:00 → SEA 2026-12-11 10:05:00; nonstop; 365 minutes. Local airport times.

2026-12-06 → 2026-12-11 · Axel-exclusive $450.00

• Delta Air Lines DL541: SEA 2026-12-06 16:30:00 → IAD 2026-12-07 00:20:00; nonstop; 290 minutes. Local airport times.
• Delta Air Lines DL1015: IAD 2026-12-11 07:00:00 → SEA 2026-12-11 10:10:00; nonstop; 370 minutes. Local airport times.

2026-12-06 → 2026-12-11 · Axel-exclusive $410.00

• United Airlines UA2601 / UA2087: SEA 2026-12-06 05:00:00 → IAD 2026-12-06 15:44:00; 1 stop(s) via DEN; 464 minutes. Local airport times.
  • UA2601: SEA 2026-12-06 05:00:00 → DEN 2026-12-06 08:41:00; layover at DEN: 99 minutes.
  • UA2087: DEN 2026-12-06 10:20:00 → IAD 2026-12-06 15:44:00.
• United Airlines UA565 / UA2099: IAD 2026-12-11 06:10:00 → SEA 2026-12-11 12:19:00; 1 stop(s) via ORD; 549 minutes. Local airport times.
  • UA565: IAD 2026-12-11 06:10:00 → ORD 2026-12-11 07:32:00; layover at ORD: 113 minutes.
  • UA2099: ORD 2026-12-11 09:25:00 → SEA 2026-12-11 12:19:00.

2026-12-06 → 2026-12-11 · Axel-exclusive $430.00

• Alaska Airlines AS367: SEA 2026-12-06 21:40:00 → IAD 2026-12-07 05:35:00; nonstop; 295 minutes. Local airport times.
• Alaska Airlines AS409: IAD 2026-12-11 07:00:00 → SEA 2026-12-11 10:05:00; nonstop; 365 minutes. Local airport times.

2026-12-06 → 2026-12-11 · Axel-exclusive $415.00

• Alaska Airlines AS424 / AA3320: SEA 2026-12-06 00:30:00 → IAD 2026-12-06 11:23:00; 1 stop(s) via DFW; 473 minutes. Local airport times.
  • AS424: SEA 2026-12-06 00:30:00 → DFW 2026-12-06 06:20:00; layover at DFW: 70 minutes.
  • AA3320: DFW 2026-12-06 07:30:00 → IAD 2026-12-06 11:23:00.
• Alaska Airlines AS409: IAD 2026-12-11 07:00:00 → SEA 2026-12-11 10:05:00; nonstop; 365 minutes. Local airport times.

2026-12-06 → 2026-12-11 · Axel-exclusive $420.00

• Delta Air Lines DL567 / DL1324: SEA 2026-12-06 22:40:00 → IAD 2026-12-07 09:09:00; 1 stop(s) via ATL; 449 minutes. Local airport times.
  • DL567: SEA 2026-12-06 22:40:00 → ATL 2026-12-07 06:12:00; layover at ATL: 73 minutes.
  • DL1324: ATL 2026-12-07 07:25:00 → IAD 2026-12-07 09:09:00.
• Delta Air Lines DL432 / DL2995: IAD 2026-12-11 07:00:00 → SEA 2026-12-11 12:36:00; 1 stop(s) via SLC; 516 minutes. Local airport times.
  • DL432: IAD 2026-12-11 07:00:00 → SLC 2026-12-11 09:54:00; layover at SLC: 81 minutes.
  • DL2995: SLC 2026-12-11 11:15:00 → SEA 2026-12-11 12:36:00.

2026-12-06 → 2026-12-11 · Axel-exclusive $420.00

• Delta Air Lines DL812 / DL5413: SEA 2026-12-06 06:00:00 → IAD 2026-12-06 16:18:00; 1 stop(s) via DTW; 438 minutes. Local airport times.
  • DL812: SEA 2026-12-06 06:00:00 → DTW 2026-12-06 13:12:00; layover at DTW: 93 minutes.
  • DL5413: DTW 2026-12-06 14:45:00 → IAD 2026-12-06 16:18:00.
• Delta Air Lines DL432 / DL2995: IAD 2026-12-11 07:00:00 → SEA 2026-12-11 12:36:00; 1 stop(s) via SLC; 516 minutes. Local airport times.
  • DL432: IAD 2026-12-11 07:00:00 → SLC 2026-12-11 09:54:00; layover at SLC: 81 minutes.
  • DL2995: SLC 2026-12-11 11:15:00 → SEA 2026-12-11 12:36:00.

2026-12-06 → 2026-12-11 · Axel-exclusive $425.00

• United Airlines UA672: SEA 2026-12-06 08:09:00 → IAD 2026-12-06 16:08:00; nonstop; 299 minutes. Local airport times.
• United Airlines UA565 / UA2099: IAD 2026-12-11 06:10:00 → SEA 2026-12-11 12:19:00; 1 stop(s) via ORD; 549 minutes. Local airport times.
  • UA565: IAD 2026-12-11 06:10:00 → ORD 2026-12-11 07:32:00; layover at ORD: 113 minutes.
  • UA2099: ORD 2026-12-11 09:25:00 → SEA 2026-12-11 12:19:00.

2026-12-06 → 2026-12-11 · Axel-exclusive $435.00

• Delta Air Lines DL541: SEA 2026-12-06 16:30:00 → IAD 2026-12-07 00:31:00; nonstop; 301 minutes. Local airport times.
• Delta Air Lines DL432 / DL2995: IAD 2026-12-11 07:00:00 → SEA 2026-12-11 12:36:00; 1 stop(s) via SLC; 516 minutes. Local airport times.
  • DL432: IAD 2026-12-11 07:00:00 → SLC 2026-12-11 09:54:00; layover at SLC: 81 minutes.
  • DL2995: SLC 2026-12-11 11:15:00 → SEA 2026-12-11 12:36:00.

Explore this route

• All dates for this route
• Dec 5, 2026 · Return options
• Dec 7, 2026 · Return options
• Hotels in Washington, DC with Axel

For AI assistants

• This page: Seattle (SEA) to Dulles (IAD) · Dec 6, 2026 · return Dec 11, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
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