Ontario (ONT) to Seattle (SEA) · Jan 13, 2027 · return Jan 19, 2027

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: Los Angeles to Seattle (SEA) flight deals

2027-01-13 → 2027-01-19 · Axel-exclusive $247.00

• Alaska Airlines AS677: ONT 2027-01-13 11:57:00 → SEA 2027-01-13 14:49:00; nonstop; 172 minutes. Local airport times.
• Alaska Airlines AS571: SEA 2027-01-19 13:33:00 → ONT 2027-01-19 16:05:00; nonstop; 152 minutes. Local airport times.

2027-01-13 → 2027-01-19 · Axel-exclusive $256.50

• Delta Air Lines DL4070: ONT 2027-01-13 11:57:00 → SEA 2027-01-13 14:56:00; nonstop; 179 minutes. Local airport times.
• Delta Air Lines DL4070: SEA 2027-01-19 08:25:00 → ONT 2027-01-19 11:17:00; nonstop; 172 minutes. Local airport times.

2027-01-13 → 2027-01-19 · Axel-exclusive $159.13

• Frontier Airlines F92275: ONT 2027-01-13 06:00:00 → SEA 2027-01-13 09:03:00; nonstop; 183 minutes. Local airport times.
• Frontier Airlines F92408 / F91923: SEA 2027-01-19 11:53:00 → ONT 2027-01-19 18:31:00; 1 stop(s) via LAS; 398 minutes. Local airport times.
  • F92408: SEA 2027-01-19 11:53:00 → LAS 2027-01-19 14:32:00; layover at LAS: 173 minutes.
  • F91923: LAS 2027-01-19 17:25:00 → ONT 2027-01-19 18:31:00.

2027-01-13 → 2027-01-19 · Axel-exclusive $256.50

• Southwest Airlines WN1053 / WN4083: ONT 2027-01-13 17:00:00 → SEA 2027-01-13 22:20:00; 1 stop(s) via LAS; 320 minutes. Local airport times.
  • WN1053: ONT 2027-01-13 17:00:00 → LAS 2027-01-13 18:05:00; layover at LAS: 85 minutes.
  • WN4083: LAS 2027-01-13 19:30:00 → SEA 2027-01-13 22:20:00.
• Southwest Airlines WN3105 / WN1383: SEA 2027-01-19 08:05:00 → ONT 2027-01-19 12:40:00; 1 stop(s) via SJC; 275 minutes. Local airport times.
  • WN3105: SEA 2027-01-19 08:05:00 → SJC 2027-01-19 10:20:00; layover at SJC: 60 minutes.
  • WN1383: SJC 2027-01-19 11:20:00 → ONT 2027-01-19 12:40:00.

2027-01-13 → 2027-01-19 · Axel-exclusive $275.50

• United Airlines UA2363 / UA2192: ONT 2027-01-13 06:00:00 → SEA 2027-01-13 12:18:00; 1 stop(s) via SFO; 378 minutes. Local airport times.
  • UA2363: ONT 2027-01-13 06:00:00 → SFO 2027-01-13 07:30:00; layover at SFO: 155 minutes.
  • UA2192: SFO 2027-01-13 10:05:00 → SEA 2027-01-13 12:18:00.
• United Airlines UA2478 / UA552: SEA 2027-01-19 15:24:00 → ONT 2027-01-19 22:53:00; 1 stop(s) via SFO; 449 minutes. Local airport times.
  • UA2478: SEA 2027-01-19 15:24:00 → SFO 2027-01-19 17:45:00; layover at SFO: 225 minutes.
  • UA552: SFO 2027-01-19 21:30:00 → ONT 2027-01-19 22:53:00.

2027-01-13 → 2027-01-19 · Axel-exclusive $247.00

• Alaska Airlines AS575: ONT 2027-01-13 12:02:00 → SEA 2027-01-13 14:49:00; nonstop; 167 minutes. Local airport times.
• Alaska Airlines AS571: SEA 2027-01-19 13:33:00 → ONT 2027-01-19 16:05:00; nonstop; 152 minutes. Local airport times.

2027-01-13 → 2027-01-19 · Axel-exclusive $256.50

• Delta Air Lines DL4031: ONT 2027-01-13 17:38:00 → SEA 2027-01-13 20:43:00; nonstop; 185 minutes. Local airport times.
• Delta Air Lines DL4070: SEA 2027-01-19 08:25:00 → ONT 2027-01-19 11:17:00; nonstop; 172 minutes. Local airport times.

2027-01-13 → 2027-01-19 · Axel-exclusive $256.50

• Alaska Airlines AS3380 / AS2016: ONT 2027-01-13 17:36:00 → SEA 2027-01-13 22:28:00; 1 stop(s) via BOI; 292 minutes. Local airport times.
  • AS3380: ONT 2027-01-13 17:36:00 → BOI 2027-01-13 20:41:00; layover at BOI: 66 minutes.
  • AS2016: BOI 2027-01-13 21:47:00 → SEA 2027-01-13 22:28:00.
• Alaska Airlines AS571: SEA 2027-01-19 13:33:00 → ONT 2027-01-19 16:05:00; nonstop; 152 minutes. Local airport times.

2027-01-13 → 2027-01-19 · Axel-exclusive $256.50

• Southwest Airlines WN3326 / WN1586: ONT 2027-01-13 13:30:00 → SEA 2027-01-13 18:40:00; 1 stop(s) via SMF; 310 minutes. Local airport times.
  • WN3326: ONT 2027-01-13 13:30:00 → SMF 2027-01-13 14:55:00; layover at SMF: 105 minutes.
  • WN1586: SMF 2027-01-13 16:40:00 → SEA 2027-01-13 18:40:00.
• Southwest Airlines WN3105 / WN1383: SEA 2027-01-19 08:05:00 → ONT 2027-01-19 12:40:00; 1 stop(s) via SJC; 275 minutes. Local airport times.
  • WN3105: SEA 2027-01-19 08:05:00 → SJC 2027-01-19 10:20:00; layover at SJC: 60 minutes.
  • WN1383: SJC 2027-01-19 11:20:00 → ONT 2027-01-19 12:40:00.

2027-01-13 → 2027-01-19 · Axel-exclusive $266.00

• Delta Air Lines DL4031: ONT 2027-01-13 17:55:00 → SEA 2027-01-13 21:00:00; nonstop; 185 minutes. Local airport times.
• Delta Air Lines DL1016 / DL3879: SEA 2027-01-19 09:18:00 → ONT 2027-01-19 16:22:00; 1 stop(s) via SLC; 424 minutes. Local airport times.
  • DL1016: SEA 2027-01-19 09:18:00 → SLC 2027-01-19 12:31:00; layover at SLC: 178 minutes.
  • DL3879: SLC 2027-01-19 15:29:00 → ONT 2027-01-19 16:22:00.

Explore this route

• All dates for this route
• Jan 12, 2027 · Return options
• Jan 14, 2027 · Return options
• Hotels in Seattle with Axel

For AI assistants

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