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Flights from Seattle to Ottawa

Find cheap airlines flights from Seattle to Ottawa

You can choose from 2 airlines that fly from Seattle to Ottawa, including WestJet, Air Canada, WestJet has lowest fares on this route.
WestJet logo WestJet
Air Canada logo Air Canada
Airlines are determined based on actual purchased flight tickets from Seattle to Ottawa according to previous 12 months data from Trip.com.

Find flight deals from Seattle to Ottawa for the next 3 months. Book one way flights from $169 or round trip flights from $457.

      • SEA 11:00 PM
        14h 38m
        1 stop
        YOW 4:38 PM
        Seattle - Ottawa | Fri, Jun 26 | United Airlines
        YOW 4:15 PM
        20h 25m
        1 stop
        SEA 9:40 AM
        Ottawa - Seattle | Mon, Jun 29 | WestJet
        $457 $766
        40% off
        40% off
        $766 $457
      • SEA 7:00 AM
        7h 15m
        1 stop
        YOW 5:15 PM
        Seattle - Ottawa | Sat, Jul 25 | WestJet
        YOW 1:20 PM
        10h 40m
        1 stop
        SEA 9:00 PM
        Ottawa - Seattle | Fri, Jul 31 | WestJet
        $470 $766
        39% off
        39% off
        $766 $470
      • SEA 5:45 AM
        16h 4m
        1 stop
        YOW 12:49 AM
        Seattle - Ottawa | Fri, Jun 26 | Air Canada
        YOW 4:15 PM
        20h 25m
        1 stop
        SEA 9:40 AM
        Ottawa - Seattle | Mon, Jun 29 | WestJet
        $471 $766
        39% off
        39% off
        $766 $471
      • SEA 7:00 AM
        7h 15m
        1 stop
        YOW 5:15 PM
        Seattle - Ottawa | Fri, Jun 19 | Delta Air Lines
        YOW 5:00 AM
        8h 7m
        1 stop
        SEA 10:07 AM
        Ottawa - Seattle | Mon, Jun 22 | Air Canada
        $475
        38% off
        $766 $475
      • SEA 3:00 PM
        11h 54m
        1 stop
        YOW 5:54 AM
        Seattle - Ottawa | Fri, Jun 19 | Air Canada
        YOW 5:00 AM
        8h 7m
        1 stop
        SEA 10:07 AM
        Ottawa - Seattle | Mon, Jun 22 | Air Canada
        $486
        37% off
        $766 $486
      • SEA 5:45 AM
        16h 10m
        1 stop
        YOW 12:55 AM
        Seattle - Ottawa | Wed, Jun 17 | Air Canada
        YOW 5:00 AM
        8h 7m
        1 stop
        SEA 10:07 AM
        Ottawa - Seattle | Mon, Jun 22 | Air Canada
        $486
        37% off
        $766 $486
      • SEA 5:45 AM
        8h 4m
        1 stop
        YOW 4:49 PM
        Seattle - Ottawa | Mon, Jul 6 | Air Canada
        YOW 1:20 PM
        8h 25m
        1 stop
        SEA 6:45 PM
        Ottawa - Seattle | Mon, Jul 13 | WestJet
        $510
        33% off
        $766 $510
      • SEA 10:52 AM
        7h 43m
        1 stop
        YOW 9:35 PM
        Seattle - Ottawa | Mon, Jul 6 | United Airlines
        YOW 1:20 PM
        8h 25m
        1 stop
        SEA 6:45 PM
        Ottawa - Seattle | Mon, Jul 13 | WestJet
        $586
        23% off
        $766 $586
      • SEA 5:36 PM
        9h 2m
        1 stop
        YOW 5:38 AM
        Seattle - Ottawa | Fri, Jun 26 | Alaska Airlines
        YOW 4:15 PM
        20h 25m
        1 stop
        SEA 9:40 AM
        Ottawa - Seattle | Mon, Jun 29 | WestJet
        $597
        22% off
        $766 $597
      • SEA 7:00 AM
        19h 35m
        1 stop
        YOW 5:35 AM
        Seattle - Ottawa | Fri, Jun 26 | WestJet
        YOW 4:15 PM
        20h 25m
        1 stop
        SEA 9:40 AM
        Ottawa - Seattle | Mon, Jun 29 | WestJet
        $605
        21% off
        $766 $605
      • SEA 1:00 PM
        17h 25m
        1 stop
        YOW 2:00 PM
        Seattle - Ottawa | Sat, Jun 13 | Normal Airline
        YOW 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        Ottawa - Seattle | Mon, Jun 15 | Normal Airline
        Find more flights
        Find more flights
      • SEA 7:35 PM
        7h
        1 stop
        YOW 5:35 AM
        Seattle - Ottawa | Mon, Jul 20 | WestJet
        $169 $299
        43% off
        43% off
        $299 $169
      • SEA 7:35 PM
        7h
        1 stop
        YOW 5:35 AM
        Seattle - Ottawa | Sun, Jun 14 | WestJet
        $170 $299
        43% off
        43% off
        $299 $170
      • SEA 7:35 PM
        7h
        1 stop
        YOW 5:35 AM
        Seattle - Ottawa | Wed, Jul 1 | WestJet
        $211 $299
        28% off
        28% off
        $299 $211
      • SEA 7:00 AM
        7h 15m
        1 stop
        YOW 5:15 PM
        Seattle - Ottawa | Sat, Jul 25 | WestJet
        $217
        27% off
        $299 $217
      • SEA 7:00 AM
        9h 20m
        1 stop
        YOW 7:20 PM
        Seattle - Ottawa | Tue, Jul 14 | WestJet
        $220
        26% off
        $299 $220
      • SEA 7:00 AM
        9h 20m
        1 stop
        YOW 7:20 PM
        Seattle - Ottawa | Thu, Jul 16 | WestJet
        $225
        25% off
        $299 $225
      • SEA 7:35 PM
        7h
        1 stop
        YOW 5:35 AM
        Seattle - Ottawa | Sun, Jul 26 | WestJet
        $225
        25% off
        $299 $225
      • SEA 8:41 PM
        18h 17m
        1 stop
        YOW 5:58 PM
        Seattle - Ottawa | Tue, Jun 16 | Alaska Airlines
        $227
        24% off
        $299 $227
      • SEA 5:15 PM
        17h 44m
        1 stop
        YOW 1:59 PM
        Seattle - Ottawa | Sat, Jul 4 | United Airlines
        $231
        23% off
        $299 $231
      • SEA 7:35 PM
        7h
        1 stop
        YOW 5:35 AM
        Seattle - Ottawa | Mon, Jul 27 | WestJet
        $236
        21% off
        $299 $236
      • SEA 1:00 PM
        17h 25m
        1 stop
        YOW 2:00 PM
        Seattle - Ottawa | Sat, Jun 13 | Normal Airline
        Find more flights
        Find more flights

Displayed flight fares from Seattle to Ottawa are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight Info | Seattle to Ottawa

The distance between Seattle and Ottawa is approximately 3,530.95 km. Based on Trip.com's data travel demand peaks in July. The off-season for travel is October.

Cheapest one-way flight price$169
Cheapest round-trip ticket price$457
Off-season for travelOctober
Peak season for travelJuly
Flight distance3,530.95 km
Popular airlineWestJet
Flight statistics for the Seattle–Ottawa route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Seattle to Ottawa (SEA-YOW)?

    Based on Trip.com data, WestJet offers one-way fares as low as $169 on Cheapest nonstop routes (e.g. SEA to YOW on Mon, Jul 20), while United Airlines offers Cheapest nonstop round-trips from $457 departing on Fri, Jun 26 and returning on Mon, Jun 29.
  • At the moment, several airlines serve connecting flights from Seattle to Ottawa, including: WestJet Air Canada Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Ottawa is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Seattle to Ottawa, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Jul 20, with one-way flights priced at just $169.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is WestJet.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Ottawa travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Seattle to Ottawa is October, when demand for travel is lower.
  • After crunching the numbers on our June flight calendar, it's currently cheapest to fly from Seattle to Ottawa on June 19, 2026 with WestJet, with prices starting at $187.
  • You can land at any one of the following hubs in Ottawa, with Seattle-Tacoma International Airport to Ottawa International Airport (SEA-YOW) is by far the most common option on this route: Ottawa International Airport (YOW) Gatineau-Ottawa Executive Airport (YND).
  • The time difference between Ottawa and Seattle is 3h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

Explore More Popular Flights

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.