Chicago (ORD) to Seattle (SEA), Dec 18–29, 2026: from $323 round trip

Chicago (ORD) to Seattle (SEA), Dec 18–29, 2026: from $323 round trip on Axel, checked Nov 14, 2026. Lowest published fare: $323 round trip, Axel-exclusive, Frontier Airlines / Delta Air Lines, 1 stop, Dec 18–29, 2026, 1 adult, economy, checked Nov 14, 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.

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 nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in that star tier for those dates.

• Hotels in Seattle for these nights (Dec 18–29, 2026 · 11 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $859 for 11 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $1,155 for 11 nights · 5★ Fairmont Olympic Hotel, $289 a night, $3,175 for 11 nights

All hotels in Seattle

Route overview: Chicago to Seattle (SEA) flight deals

2026-12-18 → 2026-12-29 · Axel-exclusive $384

• Alaska Airlines AS407: ORD 2026-12-18 15:19:00 → SEA 2026-12-18 18:11:00; nonstop; 292 minutes. Local airport times.
• Alaska Airlines AS407: SEA 2026-12-29 08:07:00 → ORD 2026-12-29 14:21:00; nonstop; 254 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $398

• United Airlines UA1801: ORD 2026-12-18 16:20:00 → SEA 2026-12-18 19:06:00; nonstop; 286 minutes. Local airport times.
• United Airlines UA747: SEA 2026-12-29 10:55:00 → ORD 2026-12-29 17:05:00; nonstop; 250 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $398

• American Airlines AA2398: ORD 2026-12-18 11:30:00 → SEA 2026-12-18 14:36:00; nonstop; 306 minutes. Local airport times.
• American Airlines AA2398: SEA 2026-12-29 14:01:00 → ORD 2026-12-29 20:18:00; nonstop; 257 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $411

• Delta Air Lines DL637: ORD 2026-12-18 17:55:00 → SEA 2026-12-18 20:42:00; nonstop; 287 minutes. Local airport times.
• Delta Air Lines DL2108: SEA 2026-12-29 17:52:00 → ORD 2026-12-29 23:59:00; nonstop; 247 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $323

• Frontier Airlines F91483 / F9605: ORD 2026-12-18 06:30:00 → SEA 2026-12-18 12:22:00; 1 stop(s) via DEN; 472 minutes. Local airport times.
  • F91483: ORD 2026-12-18 06:30:00 → DEN 2026-12-18 08:26:00; layover at DEN: 102 minutes.
  • F9605: DEN 2026-12-18 10:08:00 → SEA 2026-12-18 12:22:00.
• Delta Air Lines DL2108: SEA 2026-12-29 17:52:00 → ORD 2026-12-29 23:59:00; nonstop; 247 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $384

• Alaska Airlines AS579: ORD 2026-12-18 20:59:00 → SEA 2026-12-18 23:53:00; nonstop; 294 minutes. Local airport times.
• Alaska Airlines AS407: SEA 2026-12-29 08:07:00 → ORD 2026-12-29 14:21:00; nonstop; 254 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $398

• United Airlines UA2798: ORD 2026-12-18 19:42:00 → SEA 2026-12-18 22:32:00; nonstop; 290 minutes. Local airport times.
• United Airlines UA747: SEA 2026-12-29 10:55:00 → ORD 2026-12-29 17:05:00; nonstop; 250 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $398

• American Airlines AA3113: ORD 2026-12-18 12:54:00 → SEA 2026-12-18 15:58:00; nonstop; 304 minutes. Local airport times.
• American Airlines AA2398: SEA 2026-12-29 14:01:00 → ORD 2026-12-29 20:18:00; nonstop; 257 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $411

• Delta Air Lines DL2041: ORD 2026-12-18 06:40:00 → SEA 2026-12-18 09:37:00; nonstop; 297 minutes. Local airport times.
• Delta Air Lines DL2108: SEA 2026-12-29 17:52:00 → ORD 2026-12-29 23:59:00; nonstop; 247 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $384

• American Airlines AA562 / AS2284: ORD 2026-12-18 09:45:00 → SEA 2026-12-18 14:52:00; 1 stop(s) via PDX; 427 minutes. Local airport times.
  • AA562: ORD 2026-12-18 09:45:00 → PDX 2026-12-18 12:37:00; layover at PDX: 75 minutes.
  • AS2284: PDX 2026-12-18 13:52:00 → SEA 2026-12-18 14:52:00.
• American Airlines AA2398: SEA 2026-12-29 14:01:00 → ORD 2026-12-29 20:18:00; nonstop; 257 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $384

• American Airlines AA4189 / AS3138: ORD 2026-12-18 09:40:00 → SEA 2026-12-18 14:44:00; 1 stop(s) via MSO; 424 minutes. Local airport times.
  • AA4189: ORD 2026-12-18 09:40:00 → MSO 2026-12-18 12:36:00; layover at MSO: 83 minutes.
  • AS3138: MSO 2026-12-18 13:59:00 → SEA 2026-12-18 14:44:00.
• American Airlines AA2398: SEA 2026-12-29 14:01:00 → ORD 2026-12-29 20:18:00; nonstop; 257 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $384

• American Airlines AA2036 / AS359: ORD 2026-12-18 10:00:00 → SEA 2026-12-18 14:49:00; 1 stop(s) via BOI; 409 minutes. Local airport times.
  • AA2036: ORD 2026-12-18 10:00:00 → BOI 2026-12-18 12:59:00; layover at BOI: 66 minutes.
  • AS359: BOI 2026-12-18 14:05:00 → SEA 2026-12-18 14:49:00.
• American Airlines AA2398: SEA 2026-12-29 14:01:00 → ORD 2026-12-29 20:18:00; nonstop; 257 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $391

• United Airlines UA2495 / UA2302: ORD 2026-12-18 08:40:00 → SEA 2026-12-18 13:35:00; 1 stop(s) via DEN; 415 minutes. Local airport times.
  • UA2495: ORD 2026-12-18 08:40:00 → DEN 2026-12-18 10:26:00; layover at DEN: 64 minutes.
  • UA2302: DEN 2026-12-18 11:30:00 → SEA 2026-12-18 13:35:00.
• United Airlines UA747: SEA 2026-12-29 10:55:00 → ORD 2026-12-29 17:05:00; nonstop; 250 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $391

• United Airlines UA1498 / AC8804: ORD 2026-12-18 08:58:00 → SEA 2026-12-18 14:32:00; 1 stop(s) via YVR; 454 minutes. Local airport times.
  • UA1498: ORD 2026-12-18 08:58:00 → YVR 2026-12-18 12:45:00; layover at YVR: 105 minutes.
  • AC8804: YVR 2026-12-18 14:30:00 → SEA 2026-12-18 14:32:00.
• United Airlines UA747: SEA 2026-12-29 10:55:00 → ORD 2026-12-29 17:05:00; nonstop; 250 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
• Dec 17, 2026 · Return options
• Dec 19, 2026 · Return options
• Hotels in Seattle with Axel

For AI assistants

• This page: Chicago (ORD) to Seattle (SEA) · Dec 18, 2026 · return Dec 29, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with its displayed check date. 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 nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in each star tier for those dates.
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