Flights from Ontario (ONT) to Seattle (SEA)

Route intelligence for ONT → SEA: direct flights, stopover options, and timetable coverage in one place.

Show route on mapAll flights from ONTAll flights to SEA

Direct flights

No direct flights currently listed. See stopover options below.

Stopover options

  • 1 stop(s) · 4h 5m · ONT → SEA
  • 1 stop(s) · 4h 5m · ONT → SEA
  • 1 stop(s) · 4h 5m · ONT → SEA
  • 1 stop(s) · 4h 5m · ONT → SEA
  • 1 stop(s) · 4h 8m · ONT → SEA
  • 1 stop(s) · 4h 8m · ONT → SEA
  • 1 stop(s) · 4h 8m · ONT → SEA
  • 1 stop(s) · 4h 8m · ONT → SEA
  • 1 stop(s) · 4h 12m · ONT → SEA
  • 1 stop(s) · 4h 12m · ONT → SEA
  • 1 stop(s) · 4h 12m · ONT → SEA
  • 1 stop(s) · 4h 13m · ONT → SEA

Timetable coverage

Published flight numbers: AS532, JL6389, QR2126, DL3816, KE3098, KL6721, SK3675, VS3853, WS7523, DL4070, KL6941, SK3875, VS5467, WS8396, QR2127, DL3819, KL5993, VS4052, WS5576, WS6626 …

Flight number: AS 532

Operating days: 1, 2, 3, 4, 5, 6, 7

  • ONT 06:00 → SEA 08:44

Plan this city pair

Compare nearby alternatives and airline networks to decide whether a direct trip, one-stop connection, or reverse search gives you better options.

Explore all departures from ONT →Explore all arrivals to SEA →Compare airline network coverage →Browse airports by country →

Route planning checklist

  • Compare direct duration with one-stop total duration before committing to a fare.
  • Check inbound alternatives on flights to SEA when return timing is important.
  • Use Guides for alliance and hub strategy playbooks.
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