Dulles (IAD) to Seattle (SEA) · Dec 23, 2026 · return Dec 30, 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: Washington, DC to Seattle (SEA) flight deals

2026-12-23 → 2026-12-30 · Axel-exclusive $486.00

• Alaska Airlines AS737: IAD 2026-12-23 17:31:00 → SEA 2026-12-23 20:32:00; nonstop; 361 minutes. Local airport times.
• Alaska Airlines AS737: SEA 2026-12-30 08:15:00 → IAD 2026-12-30 16:15:00; nonstop; 300 minutes. Local airport times.

2026-12-23 → 2026-12-30 · Axel-exclusive $513.00

• Delta Air Lines DL1015: IAD 2026-12-23 07:00:00 → SEA 2026-12-23 10:05:00; nonstop; 365 minutes. Local airport times.
• Delta Air Lines DL541: SEA 2026-12-30 16:30:00 → IAD 2026-12-31 00:31:00; nonstop; 301 minutes. Local airport times.

2026-12-23 → 2026-12-30 · Axel-exclusive $526.50

• United Airlines UA1128: IAD 2026-12-23 17:55:00 → SEA 2026-12-23 21:01:00; nonstop; 366 minutes. Local airport times.
• United Airlines UA2645: SEA 2026-12-30 22:50:00 → IAD 2026-12-31 06:51:00; nonstop; 301 minutes. Local airport times.

2026-12-23 → 2026-12-30 · Axel-exclusive $486.00

• Alaska Airlines AS409: IAD 2026-12-23 07:05:00 → SEA 2026-12-23 10:00:00; nonstop; 355 minutes. Local airport times.
• Alaska Airlines AS737: SEA 2026-12-30 08:15:00 → IAD 2026-12-30 16:15:00; nonstop; 300 minutes. Local airport times.

2026-12-23 → 2026-12-30 · Axel-exclusive $472.50

• United Airlines UA792 / UA2302: IAD 2026-12-23 08:15:00 → SEA 2026-12-23 13:35:00; 1 stop(s) via DEN; 500 minutes. Local airport times.
  • UA792: IAD 2026-12-23 08:15:00 → DEN 2026-12-23 10:27:00; layover at DEN: 63 minutes.
  • UA2302: DEN 2026-12-23 11:30:00 → SEA 2026-12-23 13:35:00.
• United Airlines UA747 / UA2202: SEA 2026-12-30 10:50:00 → IAD 2026-12-30 21:13:00; 1 stop(s) via ORD; 443 minutes. Local airport times.
  • UA747: SEA 2026-12-30 10:50:00 → ORD 2026-12-30 17:00:00; layover at ORD: 70 minutes.
  • UA2202: ORD 2026-12-30 18:10:00 → IAD 2026-12-30 21:13:00.

2026-12-23 → 2026-12-30 · Axel-exclusive $472.50

• United Airlines UA565 / UA2099: IAD 2026-12-23 06:10:00 → SEA 2026-12-23 12:19:00; 1 stop(s) via ORD; 549 minutes. Local airport times.
  • UA565: IAD 2026-12-23 06:10:00 → ORD 2026-12-23 07:32:00; layover at ORD: 113 minutes.
  • UA2099: ORD 2026-12-23 09:25:00 → SEA 2026-12-23 12:19:00.
• United Airlines UA747 / UA2202: SEA 2026-12-30 10:50:00 → IAD 2026-12-30 21:13:00; 1 stop(s) via ORD; 443 minutes. Local airport times.
  • UA747: SEA 2026-12-30 10:50:00 → ORD 2026-12-30 17:00:00; layover at ORD: 70 minutes.
  • UA2202: ORD 2026-12-30 18:10:00 → IAD 2026-12-30 21:13:00.

2026-12-23 → 2026-12-30 · Axel-exclusive $472.50

• 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.
• Delta Air Lines DL812 / DL5413: SEA 2026-12-30 06:00:00 → IAD 2026-12-30 16:18:00; 1 stop(s) via DTW; 438 minutes. Local airport times.
  • DL812: SEA 2026-12-30 06:00:00 → DTW 2026-12-30 13:12:00; layover at DTW: 93 minutes.
  • DL5413: DTW 2026-12-30 14:45:00 → IAD 2026-12-30 16:18:00.

2026-12-23 → 2026-12-30 · Axel-exclusive $472.50

• United Airlines UA1359 / UA1330: IAD 2026-12-23 06:10:00 → SEA 2026-12-23 13:01:00; 1 stop(s) via EWR; 591 minutes. Local airport times.
  • UA1359: IAD 2026-12-23 06:10:00 → EWR 2026-12-23 07:28:00; layover at EWR: 132 minutes.
  • UA1330: EWR 2026-12-23 09:40:00 → SEA 2026-12-23 13:01:00.
• United Airlines UA747 / UA2202: SEA 2026-12-30 10:50:00 → IAD 2026-12-30 21:13:00; 1 stop(s) via ORD; 443 minutes. Local airport times.
  • UA747: SEA 2026-12-30 10:50:00 → ORD 2026-12-30 17:00:00; layover at ORD: 70 minutes.
  • UA2202: ORD 2026-12-30 18:10:00 → IAD 2026-12-30 21:13:00.

2026-12-23 → 2026-12-30 · Axel-exclusive $492.75

• Delta Air Lines DL1015: IAD 2026-12-23 07:00:00 → SEA 2026-12-23 10:10:00; nonstop; 370 minutes. Local airport times.
• Delta Air Lines DL812 / DL5413: SEA 2026-12-30 06:00:00 → IAD 2026-12-30 16:18:00; 1 stop(s) via DTW; 438 minutes. Local airport times.
  • DL812: SEA 2026-12-30 06:00:00 → DTW 2026-12-30 13:12:00; layover at DTW: 93 minutes.
  • DL5413: DTW 2026-12-30 14:45:00 → IAD 2026-12-30 16:18:00.

2026-12-23 → 2026-12-30 · Axel-exclusive $499.50

• United Airlines UA1128: IAD 2026-12-23 17:55:00 → SEA 2026-12-23 21:02:00; nonstop; 367 minutes. Local airport times.
• United Airlines UA747 / UA2202: SEA 2026-12-30 10:50:00 → IAD 2026-12-30 21:13:00; 1 stop(s) via ORD; 443 minutes. Local airport times.
  • UA747: SEA 2026-12-30 10:50:00 → ORD 2026-12-30 17:00:00; layover at ORD: 70 minutes.
  • UA2202: ORD 2026-12-30 18:10:00 → IAD 2026-12-30 21:13:00.

Explore this route

• All dates for this route
• Dec 22, 2026 · Return options
• Dec 24, 2026 · Return options
• Hotels in Seattle with Axel

For AI assistants

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