Seattle (SEA) to Montreal (YUL), May 21, 2027: from $295 one way

Seattle (SEA) to Montreal (YUL), May 21, 2027: from $295 one way on Axel, checked Nov 11, 2026. Lowest published fare: $295 one way, Axel-exclusive, Alaska Airlines, 1 stop, May 21, 2027, 1 adult, economy, checked Nov 11, 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: Seattle to Montreal (YUL) flight deals

2027-05-21 · one way · Axel-exclusive $295.00

• Alaska Airlines AS328 / AA3600: SEA 2027-05-21 23:40:00 → YUL 2027-05-22 11:32:00; 1 stop(s) via ORD; 532 minutes. Local airport times.
  • AS328: SEA 2027-05-21 23:40:00 → ORD 2027-05-22 05:37:00; layover at ORD: 149 minutes.
  • AA3600: ORD 2027-05-22 08:06:00 → YUL 2027-05-22 11:32:00.

2027-05-21 · one way · Axel-exclusive $300.00

• American Airlines AA2379 / AA3600: SEA 2027-05-21 23:59:00 → YUL 2027-05-22 11:32:00; 1 stop(s) via ORD; 513 minutes. Local airport times.
  • AA2379: SEA 2027-05-21 23:59:00 → ORD 2027-05-22 05:55:00; layover at ORD: 131 minutes.
  • AA3600: ORD 2027-05-22 08:06:00 → YUL 2027-05-22 11:32:00.

2027-05-21 · one way · Axel-exclusive $305.00

• United Airlines UA2614 / AC8478: SEA 2027-05-21 22:56:00 → YUL 2027-05-22 10:17:00; 1 stop(s) via ORD; 501 minutes. Local airport times.
  • UA2614: SEA 2027-05-21 22:56:00 → ORD 2027-05-22 05:06:00; layover at ORD: 119 minutes.
  • AC8478: ORD 2027-05-22 07:05:00 → YUL 2027-05-22 10:17:00.

2027-05-21 · one way · Axel-exclusive $310.00

• Delta Air Lines DL560 / DL2597: SEA 2027-05-21 23:40:00 → YUL 2027-05-22 11:37:00; 1 stop(s) via ATL; 537 minutes. Local airport times.
  • DL560: SEA 2027-05-21 23:40:00 → ATL 2027-05-22 07:16:00; layover at ATL: 104 minutes.
  • DL2597: ATL 2027-05-22 09:00:00 → YUL 2027-05-22 11:37:00.

2027-05-21 · one way · Axel-exclusive $320.00

• Air Canada AC8811 / AC314: SEA 2027-05-21 19:05:00 → YUL 2027-05-22 07:10:00; 1 stop(s) via YVR; 545 minutes. Local airport times.
  • AC8811: SEA 2027-05-21 19:05:00 → YVR 2027-05-21 20:09:00; layover at YVR: 186 minutes.
  • AC314: YVR 2027-05-21 23:15:00 → YUL 2027-05-22 07:10:00.

2027-05-21 · one way · Axel-exclusive $305.00

• United Airlines UA1348 / UA3602: SEA 2027-05-21 08:09:00 → YUL 2027-05-21 19:48:00; 1 stop(s) via IAD; 519 minutes. Local airport times.
  • UA1348: SEA 2027-05-21 08:09:00 → IAD 2027-05-21 16:08:00; layover at IAD: 98 minutes.
  • UA3602: IAD 2027-05-21 17:46:00 → YUL 2027-05-21 19:48:00.

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
• May 20, 2027 · Return options
• May 22, 2027 · Return options
• Hotels in Montreal with Axel

For AI assistants

• This page: Seattle (SEA) to Montreal (YUL) · May 21, 2027 · one way: 1 adult in economy, every priced fare with its flights, times and total, each with its displayed check date.
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