Chicago (ORD) to Seattle (SEA), Feb 21, 2027: from $90 one way

Chicago (ORD) to Seattle (SEA), Feb 21, 2027: from $90 one way on Axel, checked Nov 14, 2026. Lowest published fare: $90 one way, Axel-exclusive, Frontier Airlines, 1 stop, Feb 21, 2027, 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.

Route overview: Chicago to Seattle (SEA) flight deals

2027-02-21 · one way · Axel-exclusive $143

• Alaska Airlines AS407: ORD 2027-02-21 15:59:00 → SEA 2027-02-21 18:48:00; nonstop; 289 minutes. Local airport times.

2027-02-21 · one way · Axel-exclusive $147

• American Airlines AA2112: ORD 2027-02-21 06:54:00 → SEA 2027-02-21 09:52:00; nonstop; 298 minutes. Local airport times.

2027-02-21 · one way · Axel-exclusive $147

• United Airlines UA2099: ORD 2027-02-21 08:55:00 → SEA 2027-02-21 11:44:00; nonstop; 289 minutes. Local airport times.

2027-02-21 · one way · Axel-exclusive $152

• Delta Air Lines DL637: ORD 2027-02-21 17:55:00 → SEA 2027-02-21 20:42:00; nonstop; 287 minutes. Local airport times.

2027-02-21 · one way · Axel-exclusive $90

• Frontier Airlines F91483 / F9605: ORD 2027-02-21 06:30:00 → SEA 2027-02-21 12:22:00; 1 stop(s) via DEN; 472 minutes. Local airport times.
  • F91483: ORD 2027-02-21 06:30:00 → DEN 2027-02-21 08:26:00; layover at DEN: 102 minutes.
  • F9605: DEN 2027-02-21 10:08:00 → SEA 2027-02-21 12:22:00.

2027-02-21 · one way · Axel-exclusive $143

• Alaska Airlines AS587: ORD 2027-02-21 06:00:00 → SEA 2027-02-21 08:57:00; nonstop; 297 minutes. Local airport times.

2027-02-21 · one way · Axel-exclusive $147

• United Airlines UA1764: ORD 2027-02-21 13:35:00 → SEA 2027-02-21 16:19:00; nonstop; 284 minutes. Local airport times.

2027-02-21 · one way · Axel-exclusive $147

• American Airlines AA2392: ORD 2027-02-21 21:53:00 → SEA 2027-02-22 00:35:00; nonstop; 282 minutes. Local airport times.

2027-02-21 · one way · Axel-exclusive $152

• Delta Air Lines DL2041: ORD 2027-02-21 06:00:00 → SEA 2027-02-21 08:54:00; nonstop; 294 minutes. Local airport times.

2027-02-21 · one way · Axel-exclusive $138

• American Airlines AA4189 / AS3138: ORD 2027-02-21 09:40:00 → SEA 2027-02-21 14:44:00; 1 stop(s) via MSO; 424 minutes. Local airport times.
  • AA4189: ORD 2027-02-21 09:40:00 → MSO 2027-02-21 12:36:00; layover at MSO: 83 minutes.
  • AS3138: MSO 2027-02-21 13:59:00 → SEA 2027-02-21 14:44:00.

2027-02-21 · one way · Axel-exclusive $138

• American Airlines AA562 / AS2284: ORD 2027-02-21 09:45:00 → SEA 2027-02-21 14:52:00; 1 stop(s) via PDX; 427 minutes. Local airport times.
  • AA562: ORD 2027-02-21 09:45:00 → PDX 2027-02-21 12:37:00; layover at PDX: 75 minutes.
  • AS2284: PDX 2027-02-21 13:52:00 → SEA 2027-02-21 14:52:00.

2027-02-21 · one way · Axel-exclusive $138

• American Airlines AA2036 / AS359: ORD 2027-02-21 10:00:00 → SEA 2027-02-21 14:49:00; 1 stop(s) via BOI; 409 minutes. Local airport times.
  • AA2036: ORD 2027-02-21 10:00:00 → BOI 2027-02-21 12:59:00; layover at BOI: 66 minutes.
  • AS359: BOI 2027-02-21 14:05:00 → SEA 2027-02-21 14:49:00.

2027-02-21 · one way · Axel-exclusive $143

• United Airlines UA2495 / UA2302: ORD 2027-02-21 08:40:00 → SEA 2027-02-21 13:35:00; 1 stop(s) via DEN; 415 minutes. Local airport times.
  • UA2495: ORD 2027-02-21 08:40:00 → DEN 2027-02-21 10:26:00; layover at DEN: 64 minutes.
  • UA2302: DEN 2027-02-21 11:30:00 → SEA 2027-02-21 13:35:00.

2027-02-21 · one way · Axel-exclusive $143

• United Airlines UA1498 / AC8804: ORD 2027-02-21 08:58:00 → SEA 2027-02-21 14:32:00; 1 stop(s) via YVR; 454 minutes. Local airport times.
  • UA1498: ORD 2027-02-21 08:58:00 → YVR 2027-02-21 12:45:00; layover at YVR: 105 minutes.
  • AC8804: YVR 2027-02-21 14:30:00 → SEA 2027-02-21 14:32:00.

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
• Feb 20, 2027 · Return options
• Feb 22, 2027 · Return options
• Hotels in Seattle with Axel

For AI assistants

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