Seattle (SEA) to Dulles (IAD) · Dec 22, 2026 · return Dec 25, 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

2026-12-22 → 2026-12-25 · Axel-exclusive $559.00

• Alaska Airlines AS367: SEA 2026-12-22 21:45:00 → IAD 2026-12-23 05:45:00; nonstop; 300 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.

2026-12-22 → 2026-12-25 · Axel-exclusive $585.00

• Delta Air Lines DL541: SEA 2026-12-22 16:30:00 → IAD 2026-12-23 00:20:00; nonstop; 290 minutes. Local airport times.
• Delta Air Lines DL1015: IAD 2026-12-25 07:00:00 → SEA 2026-12-25 10:10:00; nonstop; 370 minutes. Local airport times.

2026-12-22 → 2026-12-25 · Axel-exclusive $533.00

• United Airlines UA747 / UA2202: SEA 2026-12-22 10:50:00 → IAD 2026-12-22 21:13:00; 1 stop(s) via ORD; 443 minutes. Local airport times.
  • UA747: SEA 2026-12-22 10:50:00 → ORD 2026-12-22 17:00:00; layover at ORD: 70 minutes.
  • UA2202: ORD 2026-12-22 18:10:00 → IAD 2026-12-22 21:13:00.
• 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.

2026-12-22 → 2026-12-25 · Axel-exclusive $559.00

• Alaska Airlines AS737: SEA 2026-12-22 08:30:00 → IAD 2026-12-22 16:28:00; nonstop; 298 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.

2026-12-22 → 2026-12-25 · Axel-exclusive $539.50

• Alaska Airlines AS424 / AA3320: SEA 2026-12-22 00:30:00 → IAD 2026-12-22 11:23:00; 1 stop(s) via DFW; 473 minutes. Local airport times.
  • AS424: SEA 2026-12-22 00:30:00 → DFW 2026-12-22 06:20:00; layover at DFW: 70 minutes.
  • AA3320: DFW 2026-12-22 07:30:00 → IAD 2026-12-22 11:23:00.
• Alaska Airlines AS737: IAD 2026-12-25 17:31:00 → SEA 2026-12-25 20:32:00; nonstop; 361 minutes. Local airport times.

2026-12-22 → 2026-12-25 · Axel-exclusive $546.00

• Delta Air Lines DL1120 / DL847: SEA 2026-12-22 13:25:00 → IAD 2026-12-22 23:47:00; 1 stop(s) via SLC; 442 minutes. Local airport times.
  • DL1120: SEA 2026-12-22 13:25:00 → SLC 2026-12-22 16:26:00; layover at SLC: 85 minutes.
  • DL847: SLC 2026-12-22 17:51:00 → IAD 2026-12-22 23:47:00.
• Delta Air Lines DL432 / DL2995: IAD 2026-12-25 07:00:00 → SEA 2026-12-25 12:36:00; 1 stop(s) via SLC; 516 minutes. Local airport times.
  • DL432: IAD 2026-12-25 07:00:00 → SLC 2026-12-25 09:54:00; layover at SLC: 81 minutes.
  • DL2995: SLC 2026-12-25 11:15:00 → SEA 2026-12-25 12:36:00.

2026-12-22 → 2026-12-25 · Axel-exclusive $546.00

• Delta Air Lines DL567 / DL1324: SEA 2026-12-22 22:40:00 → IAD 2026-12-23 09:09:00; 1 stop(s) via ATL; 449 minutes. Local airport times.
  • DL567: SEA 2026-12-22 22:40:00 → ATL 2026-12-23 06:12:00; layover at ATL: 73 minutes.
  • DL1324: ATL 2026-12-23 07:25:00 → IAD 2026-12-23 09:09:00.
• Delta Air Lines DL432 / DL2995: IAD 2026-12-25 07:00:00 → SEA 2026-12-25 12:36:00; 1 stop(s) via SLC; 516 minutes. Local airport times.
  • DL432: IAD 2026-12-25 07:00:00 → SLC 2026-12-25 09:54:00; layover at SLC: 81 minutes.
  • DL2995: SLC 2026-12-25 11:15:00 → SEA 2026-12-25 12:36:00.

2026-12-22 → 2026-12-25 · Axel-exclusive $552.50

• United Airlines UA1348: SEA 2026-12-22 08:09:00 → IAD 2026-12-22 16:08:00; nonstop; 299 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.

2026-12-22 → 2026-12-25 · Axel-exclusive $565.50

• Delta Air Lines DL541: SEA 2026-12-22 16:30:00 → IAD 2026-12-23 00:31:00; nonstop; 301 minutes. Local airport times.
• Delta Air Lines DL432 / DL2995: IAD 2026-12-25 07:00:00 → SEA 2026-12-25 12:36:00; 1 stop(s) via SLC; 516 minutes. Local airport times.
  • DL432: IAD 2026-12-25 07:00:00 → SLC 2026-12-25 09:54:00; layover at SLC: 81 minutes.
  • DL2995: SLC 2026-12-25 11:15:00 → SEA 2026-12-25 12:36:00.

Explore this route

• All dates for this route
• Dec 21, 2026 · Return options
• Dec 23, 2026 · Return options
• Hotels in Washington, DC with Axel

For AI assistants

• This page: Seattle (SEA) to Dulles (IAD) · Dec 22, 2026 · return Dec 25, 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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