Dulles (IAD) to Seattle (SEA), Dec 9, 2026: round trips from $310, one way from $135

Dulles (IAD) to Seattle (SEA), Dec 9, 2026: round trips from $310, one way from $135 on Axel, checked Oct 29, 2026. Lowest published fares: $310 round trip, Axel-exclusive, Sun Country Airlines / Alaska Airlines, 1 stop, Dec 9–12, 2026; $135 one way, Axel-exclusive, Sun Country Airlines, 1 stop, Dec 9, 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 Seattle for these trips

Hotels: under a trip, hotels in Seattle 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 Seattle for these nights (Dec 9–10, 2026 · 1 night · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 total · 4★ Hilton Seattle Airport & Conference Center, $108 total · 5★ Fairmont Olympic Hotel, $273 total
• Hotels in Seattle for these nights (Dec 9–11, 2026 · 2 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $158 total · 4★ Hilton Seattle Airport & Conference Center, $213 total · 5★ Fairmont Olympic Hotel, $549 total
• Hotels in Seattle for these nights (Dec 9–12, 2026 · 3 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $239 total · 4★ Hilton Seattle Airport & Conference Center, $318 total · 5★ Fairmont Olympic Hotel, $836 total
• Hotels in Seattle for these nights (Dec 9–13, 2026 · 4 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $320 total · 4★ Hilton Seattle Airport & Conference Center, $423 total · 5★ Fairmont Olympic Hotel, $1,309 total
• Hotels in Seattle for these nights (Dec 9–14, 2026 · 5 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $398 total · 4★ Hilton Seattle Airport & Conference Center, $526 total · 5★ Fairmont Olympic Hotel, $1,596 total
• Hotels in Seattle for these nights (Dec 9–15, 2026 · 6 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $476 total · 4★ Hilton Seattle Airport & Conference Center, $631 total · 5★ Fairmont Olympic Hotel, $1,881 total
• Hotels in Seattle for these nights (Dec 9–16, 2026 · 7 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $551 total · 4★ Hilton Seattle Airport & Conference Center, $736 total · 5★ Fairmont Olympic Hotel, $2,160 total
• Hotels in Seattle for these nights (Dec 9–17, 2026 · 8 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $626 total · 4★ Hilton Seattle Airport & Conference Center, $837 total · 5★ Fairmont Olympic Hotel, $2,460 total
• Hotels in Seattle for these nights (Dec 9–18, 2026 · 9 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $704 total · 4★ Hilton Seattle Airport & Conference Center, $942 total · 5★ Fairmont Olympic Hotel, $2,734 total
• Hotels in Seattle for these nights (Dec 9–19, 2026 · 10 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $783 total · 4★ Hilton Seattle Airport & Conference Center, $1,047 total · 5★ Fairmont Olympic Hotel, $3,017 total
• Hotels in Seattle for these nights (Dec 9–20, 2026 · 11 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $864 total · 4★ Hilton Seattle Airport & Conference Center, $1,152 total · 5★ Fairmont Olympic Hotel, $3,304 total
• Hotels in Seattle for these nights (Dec 9–21, 2026 · 12 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $940 total · 4★ Hilton Seattle Airport & Conference Center, $1,257 total · 5★ Fairmont Olympic Hotel, $3,571 total
• Hotels in Seattle for these nights (Dec 9–22, 2026 · 13 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $1,018 total · 4★ Hilton Seattle Airport & Conference Center, $1,362 total · 5★ Fairmont Olympic Hotel, $3,867 total
• Hotels in Seattle for these nights (Dec 9–23, 2026 · 14 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $1,094 total · 4★ Hilton Seattle Airport & Conference Center, $1,467 total · 5★ Fairmont Olympic Hotel, $4,168 total

All hotels in Seattle

Route overview: Washington, DC to Seattle (SEA) flight deals

2026-12-09 · one way · Axel-exclusive $135.00

• Sun Country Airlines SY668 / SY285: IAD 2026-12-09 12:44:00 → SEA 2026-12-09 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
  • SY668: IAD 2026-12-09 12:44:00 → MSP 2026-12-09 14:21:00; layover at MSP: 64 minutes.
  • SY285: MSP 2026-12-09 15:25:00 → SEA 2026-12-09 17:17:00.

2026-12-09 · one way · Axel-exclusive $185.00

• Alaska Airlines AS409: IAD 2026-12-09 07:00:00 → SEA 2026-12-09 10:05:00; nonstop; 365 minutes. Local airport times.

2026-12-09 → 2026-12-10 · Axel-exclusive $325.00

• Sun Country Airlines SY668 / SY285: IAD 2026-12-09 12:44:00 → SEA 2026-12-09 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
  • SY668: IAD 2026-12-09 12:44:00 → MSP 2026-12-09 14:21:00; layover at MSP: 64 minutes.
  • SY285: MSP 2026-12-09 15:25:00 → SEA 2026-12-09 17:17:00.
• United Airlines UA1348: SEA 2026-12-10 08:09:00 → IAD 2026-12-10 16:08:00; nonstop; 299 minutes. Local airport times.

2026-12-09 → 2026-12-10 · Axel-exclusive $360.00

• Alaska Airlines AS409: IAD 2026-12-09 07:00:00 → SEA 2026-12-09 10:05:00; nonstop; 365 minutes. Local airport times.
• Alaska Airlines AS737: SEA 2026-12-10 08:30:00 → IAD 2026-12-10 16:28:00; nonstop; 298 minutes. Local airport times.

2026-12-09 → 2026-12-11 · Axel-exclusive $325.00

• Sun Country Airlines SY668 / SY285: IAD 2026-12-09 12:44:00 → SEA 2026-12-09 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
  • SY668: IAD 2026-12-09 12:44:00 → MSP 2026-12-09 14:21:00; layover at MSP: 64 minutes.
  • SY285: MSP 2026-12-09 15:25:00 → SEA 2026-12-09 17:17:00.
• United Airlines UA2645: SEA 2026-12-11 22:50:00 → IAD 2026-12-12 06:51:00; nonstop; 301 minutes. Local airport times.

2026-12-09 → 2026-12-11 · Axel-exclusive $360.00

• Alaska Airlines AS409: IAD 2026-12-09 07:00:00 → SEA 2026-12-09 10:05:00; nonstop; 365 minutes. Local airport times.
• Alaska Airlines AS367: SEA 2026-12-11 21:40:00 → IAD 2026-12-12 05:35:00; nonstop; 295 minutes. Local airport times.

2026-12-09 → 2026-12-12 · Axel-exclusive $310.00

• Sun Country Airlines SY668 / SY285: IAD 2026-12-09 12:44:00 → SEA 2026-12-09 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
  • SY668: IAD 2026-12-09 12:44:00 → MSP 2026-12-09 14:21:00; layover at MSP: 64 minutes.
  • SY285: MSP 2026-12-09 15:25:00 → SEA 2026-12-09 17:17:00.
• Alaska Airlines AS367: SEA 2026-12-12 21:45:00 → IAD 2026-12-13 05:45:00; nonstop; 300 minutes. Local airport times.

2026-12-09 → 2026-12-12 · Axel-exclusive $360.00

• Alaska Airlines AS409: IAD 2026-12-09 07:00:00 → SEA 2026-12-09 10:05:00; nonstop; 365 minutes. Local airport times.
• Alaska Airlines AS367: SEA 2026-12-12 21:45:00 → IAD 2026-12-13 05:45:00; nonstop; 300 minutes. Local airport times.

2026-12-09 → 2026-12-13 · Axel-exclusive $310.00

• Sun Country Airlines SY668 / SY285: IAD 2026-12-09 12:44:00 → SEA 2026-12-09 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
  • SY668: IAD 2026-12-09 12:44:00 → MSP 2026-12-09 14:21:00; layover at MSP: 64 minutes.
  • SY285: MSP 2026-12-09 15:25:00 → SEA 2026-12-09 17:17:00.
• Alaska Airlines AS367: SEA 2026-12-13 21:40:00 → IAD 2026-12-14 05:35:00; nonstop; 295 minutes. Local airport times.

2026-12-09 → 2026-12-13 · Axel-exclusive $360.00

• Alaska Airlines AS409: IAD 2026-12-09 07:00:00 → SEA 2026-12-09 10:05:00; nonstop; 365 minutes. Local airport times.
• Alaska Airlines AS367: SEA 2026-12-13 21:40:00 → IAD 2026-12-14 05:35:00; nonstop; 295 minutes. Local airport times.

2026-12-09 → 2026-12-15 · Axel-exclusive $325.00

• Sun Country Airlines SY668 / SY285: IAD 2026-12-09 12:44:00 → SEA 2026-12-09 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
  • SY668: IAD 2026-12-09 12:44:00 → MSP 2026-12-09 14:21:00; layover at MSP: 64 minutes.
  • SY285: MSP 2026-12-09 15:25:00 → SEA 2026-12-09 17:17:00.
• United Airlines UA1348: SEA 2026-12-15 08:09:00 → IAD 2026-12-15 16:08:00; nonstop; 299 minutes. Local airport times.

2026-12-09 → 2026-12-15 · Axel-exclusive $360.00

• Alaska Airlines AS409: IAD 2026-12-09 07:00:00 → SEA 2026-12-09 10:05:00; nonstop; 365 minutes. Local airport times.
• Alaska Airlines AS367: SEA 2026-12-15 21:45:00 → IAD 2026-12-16 05:45:00; nonstop; 300 minutes. Local airport times.

2026-12-09 → 2026-12-16 · Axel-exclusive $310.00

• Sun Country Airlines SY668 / SY285: IAD 2026-12-09 12:44:00 → SEA 2026-12-09 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
  • SY668: IAD 2026-12-09 12:44:00 → MSP 2026-12-09 14:21:00; layover at MSP: 64 minutes.
  • SY285: MSP 2026-12-09 15:25:00 → SEA 2026-12-09 17:17:00.
• Alaska Airlines AS737: SEA 2026-12-16 08:15:00 → IAD 2026-12-16 16:15:00; nonstop; 300 minutes. Local airport times.

2026-12-09 → 2026-12-16 · Axel-exclusive $360.00

• Alaska Airlines AS409: IAD 2026-12-09 07:00:00 → SEA 2026-12-09 10:05:00; nonstop; 365 minutes. Local airport times.
• Alaska Airlines AS737: SEA 2026-12-16 08:15:00 → IAD 2026-12-16 16:15:00; nonstop; 300 minutes. Local airport times.

2026-12-09 → 2026-12-17 · Axel-exclusive $325.00

• Sun Country Airlines SY668 / SY285: IAD 2026-12-09 12:44:00 → SEA 2026-12-09 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
  • SY668: IAD 2026-12-09 12:44:00 → MSP 2026-12-09 14:21:00; layover at MSP: 64 minutes.
  • SY285: MSP 2026-12-09 15:25:00 → SEA 2026-12-09 17:17:00.
• United Airlines UA1348: SEA 2026-12-17 08:09:00 → IAD 2026-12-17 16:08:00; nonstop; 299 minutes. Local airport times.

2026-12-09 → 2026-12-17 · Axel-exclusive $360.00

• Alaska Airlines AS409: IAD 2026-12-09 07:00:00 → SEA 2026-12-09 10:05:00; nonstop; 365 minutes. Local airport times.
• Alaska Airlines AS737: SEA 2026-12-17 08:30:00 → IAD 2026-12-17 16:28:00; nonstop; 298 minutes. Local airport times.

2026-12-09 → 2026-12-19 · Axel-exclusive $373.00

• Sun Country Airlines SY668 / SY285: IAD 2026-12-09 12:44:00 → SEA 2026-12-09 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
  • SY668: IAD 2026-12-09 12:44:00 → MSP 2026-12-09 14:21:00; layover at MSP: 64 minutes.
  • SY285: MSP 2026-12-09 15:25:00 → SEA 2026-12-09 17:17:00.
• Alaska Airlines AS367: SEA 2026-12-19 21:45:00 → IAD 2026-12-20 05:45:00; nonstop; 300 minutes. Local airport times.

2026-12-09 → 2026-12-19 · Axel-exclusive $423.00

• Alaska Airlines AS409: IAD 2026-12-09 07:00:00 → SEA 2026-12-09 10:05:00; nonstop; 365 minutes. Local airport times.
• Alaska Airlines AS367: SEA 2026-12-19 21:45:00 → IAD 2026-12-20 05:45:00; nonstop; 300 minutes. Local airport times.

2026-12-09 → 2026-12-20 · Axel-exclusive $373.00

• Sun Country Airlines SY668 / SY285: IAD 2026-12-09 12:44:00 → SEA 2026-12-09 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
  • SY668: IAD 2026-12-09 12:44:00 → MSP 2026-12-09 14:21:00; layover at MSP: 64 minutes.
  • SY285: MSP 2026-12-09 15:25:00 → SEA 2026-12-09 17:17:00.
• Alaska Airlines AS737: SEA 2026-12-20 08:30:00 → IAD 2026-12-20 16:28:00; nonstop; 298 minutes. Local airport times.

2026-12-09 → 2026-12-20 · Axel-exclusive $423.00

• Alaska Airlines AS409: IAD 2026-12-09 07:00:00 → SEA 2026-12-09 10:05:00; nonstop; 365 minutes. Local airport times.
• Alaska Airlines AS737: SEA 2026-12-20 08:30:00 → IAD 2026-12-20 16:28:00; nonstop; 298 minutes. Local airport times.

2026-12-09 → 2026-12-21 · Axel-exclusive $373.00

• Sun Country Airlines SY668 / SY285: IAD 2026-12-09 12:44:00 → SEA 2026-12-09 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
  • SY668: IAD 2026-12-09 12:44:00 → MSP 2026-12-09 14:21:00; layover at MSP: 64 minutes.
  • SY285: MSP 2026-12-09 15:25:00 → SEA 2026-12-09 17:17:00.
• Alaska Airlines AS367: SEA 2026-12-21 21:45:00 → IAD 2026-12-22 05:45:00; nonstop; 300 minutes. Local airport times.

2026-12-09 → 2026-12-21 · Axel-exclusive $423.00

• Alaska Airlines AS409: IAD 2026-12-09 07:00:00 → SEA 2026-12-09 10:05:00; nonstop; 365 minutes. Local airport times.
• Alaska Airlines AS367: SEA 2026-12-21 21:45:00 → IAD 2026-12-22 05:45:00; nonstop; 300 minutes. Local airport times.

2026-12-09 → 2026-12-23 · Axel-exclusive $373.00

• Sun Country Airlines SY668 / SY285: IAD 2026-12-09 12:44:00 → SEA 2026-12-09 17:17:00; 1 stop(s) via MSP; 453 minutes. Local airport times.
  • SY668: IAD 2026-12-09 12:44:00 → MSP 2026-12-09 14:21:00; layover at MSP: 64 minutes.
  • SY285: MSP 2026-12-09 15:25:00 → SEA 2026-12-09 17:17:00.
• Alaska Airlines AS737: SEA 2026-12-23 08:15:00 → IAD 2026-12-23 16:15:00; nonstop; 300 minutes. Local airport times.

2026-12-09 → 2026-12-23 · Axel-exclusive $423.00

• Alaska Airlines AS409: IAD 2026-12-09 07:00:00 → SEA 2026-12-09 10:05:00; nonstop; 365 minutes. Local airport times.
• Alaska Airlines AS737: SEA 2026-12-23 08:15:00 → IAD 2026-12-23 16:15:00; nonstop; 300 minutes. Local airport times.

Explore this route

• All dates for this route
• Dec 8, 2026 · Return options
• Dec 10, 2026 · Return options
• Hotels in Seattle with Axel

For AI assistants

• This page: Dulles (IAD) to Seattle (SEA) · Dec 9, 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 Seattle 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.
• Next: each row is one exact trip for this departure (both dates with the year, the total and the time its price was issued); its exact-trip price link opens the live search for those dates and travelers, where the booking link and the current total are. Other durations or travelers are not priced here: Choose travelers and dates prices the requested trip.
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