Dulles (IAD) to Seattle (SEA), Jan 23–28, 2027: from $295 round trip

Lowest published fare: $295 round trip, Axel-exclusive, Sun Country Airlines / Alaska Airlines, 1 stop, Jan 23–28, 2027, 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.

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

2027-01-23 → 2027-01-28 · Axel-exclusive $342.00

• Alaska Airlines AS409: IAD 2027-01-23 07:05:00 → SEA 2027-01-23 10:00:00; nonstop; 355 minutes. Local airport times.
• Alaska Airlines AS737: SEA 2027-01-28 08:30:00 → IAD 2027-01-28 16:28:00; nonstop; 298 minutes. Local airport times.

2027-01-23 → 2027-01-28 · Axel-exclusive $361.00

• Delta Air Lines DL1015: IAD 2027-01-23 07:00:00 → SEA 2027-01-23 10:05:00; nonstop; 365 minutes. Local airport times.
• Delta Air Lines DL541: SEA 2027-01-28 16:30:00 → IAD 2027-01-29 00:31:00; nonstop; 301 minutes. Local airport times.

2027-01-23 → 2027-01-28 · Axel-exclusive $370.50

• United Airlines UA2731: IAD 2027-01-23 08:50:00 → SEA 2027-01-23 11:57:00; nonstop; 367 minutes. Local airport times.
• United Airlines UA1348: SEA 2027-01-28 08:09:00 → IAD 2027-01-28 16:08:00; nonstop; 299 minutes. Local airport times.

2027-01-23 → 2027-01-28 · Axel-exclusive $294.50

• Sun Country Airlines SY668 / SY285: IAD 2027-01-23 12:44:00 → SEA 2027-01-23 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
  • SY668: IAD 2027-01-23 12:44:00 → MSP 2027-01-23 14:21:00; layover at MSP: 64 minutes.
  • SY285: MSP 2027-01-23 15:25:00 → SEA 2027-01-23 17:17:00.
• Alaska Airlines AS737: SEA 2027-01-28 08:30:00 → IAD 2027-01-28 16:28:00; nonstop; 298 minutes. Local airport times.

2027-01-23 → 2027-01-28 · Axel-exclusive $342.00

• Alaska Airlines AS737: IAD 2027-01-23 17:31:00 → SEA 2027-01-23 20:32:00; nonstop; 361 minutes. Local airport times.
• Alaska Airlines AS737: SEA 2027-01-28 08:30:00 → IAD 2027-01-28 16:28:00; nonstop; 298 minutes. Local airport times.

2027-01-23 → 2027-01-28 · Axel-exclusive $370.50

• United Airlines UA1128: IAD 2027-01-23 17:55:00 → SEA 2027-01-23 21:02:00; nonstop; 367 minutes. Local airport times.
• United Airlines UA1348: SEA 2027-01-28 08:09:00 → IAD 2027-01-28 16:08:00; nonstop; 299 minutes. Local airport times.

2027-01-23 → 2027-01-28 · Axel-exclusive $346.75

• Delta Air Lines DL432 / DL2995: IAD 2027-01-23 07:00:00 → SEA 2027-01-23 12:36:00; 1 stop(s) via SLC; 516 minutes. Local airport times.
  • DL432: IAD 2027-01-23 07:00:00 → SLC 2027-01-23 09:54:00; layover at SLC: 81 minutes.
  • DL2995: SLC 2027-01-23 11:15:00 → SEA 2027-01-23 12:36:00.
• Delta Air Lines DL541: SEA 2027-01-28 16:30:00 → IAD 2027-01-29 00:31:00; nonstop; 301 minutes. Local airport times.

2027-01-23 → 2027-01-28 · Axel-exclusive $346.75

• Delta Air Lines DL1015: IAD 2027-01-23 07:00:00 → SEA 2027-01-23 10:10:00; nonstop; 370 minutes. Local airport times.
• Delta Air Lines DL812 / DL5413: SEA 2027-01-28 06:00:00 → IAD 2027-01-28 16:18:00; 1 stop(s) via DTW; 438 minutes. Local airport times.
  • DL812: SEA 2027-01-28 06:00:00 → DTW 2027-01-28 13:12:00; layover at DTW: 93 minutes.
  • DL5413: DTW 2027-01-28 14:45:00 → IAD 2027-01-28 16:18:00.

2027-01-23 → 2027-01-28 · Axel-exclusive $346.75

• Delta Air Lines DL5511 / DL734: IAD 2027-01-23 06:00:00 → SEA 2027-01-23 11:09:00; 1 stop(s) via DTW; 489 minutes. Local airport times.
  • DL5511: IAD 2027-01-23 06:00:00 → DTW 2027-01-23 07:46:00; layover at DTW: 69 minutes.
  • DL734: DTW 2027-01-23 08:55:00 → SEA 2027-01-23 11:09:00.
• Delta Air Lines DL541: SEA 2027-01-28 16:30:00 → IAD 2027-01-29 00:31:00; nonstop; 301 minutes. Local airport times.

2027-01-23 → 2027-01-28 · Axel-exclusive $351.50

• United Airlines UA792 / UA2302: IAD 2027-01-23 08:15:00 → SEA 2027-01-23 13:35:00; 1 stop(s) via DEN; 500 minutes. Local airport times.
  • UA792: IAD 2027-01-23 08:15:00 → DEN 2027-01-23 10:27:00; layover at DEN: 63 minutes.
  • UA2302: DEN 2027-01-23 11:30:00 → SEA 2027-01-23 13:35:00.
• United Airlines UA1348: SEA 2027-01-28 08:09:00 → IAD 2027-01-28 16:08:00; nonstop; 299 minutes. Local airport times.

2027-01-23 → 2027-01-28 · Axel-exclusive $351.50

• United Airlines UA565 / UA2099: IAD 2027-01-23 06:10:00 → SEA 2027-01-23 12:19:00; 1 stop(s) via ORD; 549 minutes. Local airport times.
  • UA565: IAD 2027-01-23 06:10:00 → ORD 2027-01-23 07:32:00; layover at ORD: 113 minutes.
  • UA2099: ORD 2027-01-23 09:25:00 → SEA 2027-01-23 12:19:00.
• United Airlines UA1348: SEA 2027-01-28 08:09:00 → IAD 2027-01-28 16:08:00; nonstop; 299 minutes. Local airport times.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

• All dates for this route
• Jan 22, 2027 · Return options
• Jan 24, 2027 · Return options
• Hotels in Seattle with Axel

For AI assistants

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