Travel with Air Canada from Ottawa, ON to Seattle (YOW - SEA) from CAD 312*

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*Fares displayed have been collected within the last 48 hours and may no longer be available at the time of booking. Learn more about this offer. Additional baggage fees and charges for optional products and services may apply.

Flights between Ottawa, ON and Seattle - our lowest fares in cash

Sep 2026
FromCAD 740*
One way/Economy
Oct 2026
FromCAD 312*
One way/Economy
Nov 2026
FromCAD 318*
One way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label CAD 312
cmp-daily-histogram-bars-legend-max-price-aria-label CAD 976
Displaying fares for September-2026
  • YOW–SEA, Sep 26, 2026: From CAD 867
    26

    Sa

    SEP

  • YOW–SEA, Sep 27, 2026: From CAD 867
    27

    Su

  • YOW–SEA, Sep 28, 2026: From CAD 783
    28

    Mo

  • YOW–SEA, Sep 29, 2026: From CAD 740
    29

    Tu

  • YOW–SEA, Sep 30, 2026: From CAD 751
    30

    We

  • YOW–SEA, Oct 01, 2026: From CAD 740
    01

    Th

    OCT

  • YOW–SEA, Oct 02, 2026: From CAD 662
    02

    Fr

  • YOW–SEA, Oct 03, 2026: From CAD 650
    03

    Sa

  • YOW–SEA, Oct 04, 2026: From CAD 694
    04

    Su

  • YOW–SEA, Oct 05, 2026: From CAD 650
    05

    Mo

  • YOW–SEA, Oct 06, 2026: From CAD 650
    06

    Tu

  • YOW–SEA, Oct 07, 2026: From CAD 713
    07

    We

  • YOW–SEA, Oct 08, 2026: From CAD 746
    08

    Th

  • YOW–SEA, Oct 09, 2026: From CAD 976
    09

    Fr

  • YOW–SEA, Oct 10, 2026: From CAD 312
    10

    Sa

  • YOW–SEA, Oct 11, 2026: From CAD 312
    11

    Su

  • YOW–SEA, Oct 12, 2026: From CAD 312
    12

    Mo

  • YOW–SEA, Oct 13, 2026: From CAD 312
    13

    Tu

  • YOW–SEA, Oct 14, 2026: From CAD 707
    14

    We

  • YOW–SEA, Oct 15, 2026: From CAD 610
    15

    Th

  • YOW–SEA, Oct 16, 2026: From CAD 317
    16

    Fr

  • YOW–SEA, Oct 17, 2026: From CAD 312
    17

    Sa

  • YOW–SEA, Oct 18, 2026: From CAD 356
    18

    Su

  • YOW–SEA, Oct 19, 2026: From CAD 312
    19

    Mo

  • YOW–SEA, Oct 20, 2026: From CAD 312
    20

    Tu

  • YOW–SEA, Oct 21, 2026: From CAD 478
    21

    We

  • YOW–SEA, Oct 22, 2026: From CAD 374
    22

    Th

  • YOW–SEA, Oct 23, 2026: From CAD 619
    23

    Fr

  • YOW–SEA, Oct 24, 2026: From CAD 312
    24

    Sa

  • YOW–SEA, Oct 25, 2026: From CAD 435
    25

    Su

    • RangeCAD 312-CAD 976

    *Fares displayed have been collected within the last 48 hours and may no longer be available at the time of booking. Learn more about this offer. Additional baggage fees and charges for optional products and services may apply.

    Book flights from Ottawa, ON (YOW) to Seattle (SEA) | Air Canada

    Flights between Ottawa, ON and Seattle - our lowest fares in points

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    *Points displayed do not reflect preferred pricing for Aeroplan Elite Status Members and/or Aeroplan Credit Cardholders. Prices have been collected within the past 48 hrs and may no longer be available at time of booking. Learn more about this offer. Additional baggage fees and charges for optional products and services may apply.

    Explore all routes from Ottawa, ON to Seattle