$121+ Cheap flights from Seattle (SEA) to Ottawa (YOW)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
Oct 11 — Oct 181
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Ottawa with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Ottawa
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Cheapest flights from Seattle to OttawaExplore the most affordable flight options available from Seattle to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
Explore the most affordable flight options available from Seattle to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
This Trip.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:35 pm -
1 stop7h 00m
Tue 10/66:55 am -
2 stops14h 50m
Deal found 9/9![WestJet logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:35 pm -
1 stop7h 00m
Wed 10/71:20 pm -
1 stop8h 25m
Deal found 9/9![WestJet logo]()
$303
This FlightHub deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:35 pm -
1 stop7h 00m
Tue 10/68:15 pm -
1 stop25h 30m
Deal found 9/9![WestJet logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop7h 00m
Tue 10/61:20 pm -
1 stop8h 25m
Deal found 9/8![WestJet logo]()
$315
This Booking.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop7h 00m
Sat 10/31:20 pm -
1 stop8h 25m
Deal found 9/8![WestJet logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:35 pm -
1 stop7h 00m
Fri 10/21:20 pm -
1 stop8h 25m
Deal found 9/6![WestJet logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2610:30 am -
2 stops10h 50m
Tue 10/61:20 pm -
1 stop8h 25m
Deal found 9/8![WestJet logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop7h 00m
Thu 10/11:20 pm -
1 stop8h 25m
Deal found 9/6![WestJet logo]()
$330
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:35 pm -
1 stop7h 00m
Fri 10/306:10 am -
1 stop11h 30m
Deal found 9/7![WestJet logo]()
$332
Best flights from Seattle to OttawaDiscover carefully curated flight deals from Seattle to Ottawa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from Seattle to Ottawa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This Trip.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:35 pm -
1 stop7h 00m
Mon 10/54:15 pm -
1 stop29h 30m
Deal found 9/9![WestJet logo]()
$315
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:56 pm -
1 stop12h 13m
Thu 10/296:15 am -
1 stop15h 48m
Deal found 9/6![United Airlines logo]()
$486
This Air Canada deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/278:40 am -
2 stops11h 31m
Thu 10/297:45 am -
1 stop9h 52m
Deal found 9/10![Air Canada logo]()
$487
This United deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/73:49 pm -
2 stops19h 20m
Sat 11/142:00 pm -
1 stop9h 59m
Deal found 9/6![Multiple Airlines logo]()
$494
This FlightHub deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:35 pm -
1 stop7h 00m
Tue 10/136:15 pm -
2 stops27h 30m
Deal found 9/6![WestJet logo]()
$353
This Trip.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/410:30 am -
1 stop16h 05m
Sun 10/114:15 pm -
1 stop29h 30m
Deal found 9/6![WestJet logo]()
$391
This Trip.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/72:20 pm -
1 stop21h 10m
Sat 11/144:20 pm -
1 stop24h 20m
Deal found 9/6![WestJet logo]()
$442
Last-minute flights from Seattle to OttawaDiscover last-minute flight deals from Seattle to Ottawa. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Ottawa. Data last updated September 11, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop7h 00m
Tue 10/61:20 pm -
1 stop8h 25m
Deal found 9/8![WestJet logo]()
$315
This Booking.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop7h 00m
Sat 10/31:20 pm -
1 stop8h 25m
Deal found 9/8![WestJet logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop7h 00m
Thu 10/11:20 pm -
1 stop8h 25m
Deal found 9/6![WestJet logo]()
$330
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2610:30 am -
2 stops10h 50m
Tue 10/61:20 pm -
1 stop8h 25m
Deal found 9/8![WestJet logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:35 pm -
1 stop7h 00m
Wed 10/71:20 pm -
1 stop8h 25m
Deal found 9/9![WestJet logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:35 pm -
1 stop7h 00m
Fri 10/21:20 pm -
1 stop8h 25m
Deal found 9/6![WestJet logo]()
$319
This FlightHub deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:35 pm -
1 stop7h 00m
Tue 10/68:15 pm -
1 stop25h 30m
Deal found 9/9![WestJet logo]()
$305
This Trip.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:35 pm -
1 stop7h 00m
Tue 10/66:55 am -
2 stops14h 50m
Deal found 9/9![WestJet logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:35 pm -
1 stop7h 00m
Fri 10/306:10 am -
1 stop11h 30m
Deal found 9/7![WestJet logo]()
$332
One-way flights from Seattle to OttawaSearch for one-way flight options from Seattle to Ottawa. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
Search for one-way flight options from Seattle to Ottawa. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Jetabroad deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:35 pm -
1 stop7h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![WestJet logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:35 pm -
1 stop7h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![WestJet logo]()
$131
This Justfly.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:35 pm -
1 stop7h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![WestJet logo]()
$156
This Travelocity deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:35 pm -
1 stop7h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![WestJet logo]()
$172
This WestJet deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:35 pm -
1 stop7h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![WestJet logo]()
$174
This Trip.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:02 am -
1 stop8h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$178
This Air Canada deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:45 am -
1 stop8h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Air Canada logo]()
$186
Find flight deals from Seattle to Ottawa
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $289 (Trip.com) |
One-way from | $121 (Jetabroad) |
Popular in | August |
Cheapest in | April |
Average price | $511 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 11, 2026.
Use the filters below to find and compare flights from Seattle to Ottawa that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleOttawa
SEA Seattle/Tacoma Intl - YOW Ottawa
SEAYOW
Seattle/Tacoma Intl
Tue 12/8
7:45 am-6:45 pm
1 stop8h 00m
Ottawa
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$186
SeattleOttawa
SEA Seattle/Tacoma Intl - YOW Ottawa
SEAYOW
Seattle/Tacoma Intl
Thu 10/8
10:30 am-12:20 am
3 stops10h 50m
Ottawa
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$198
SeattleOttawa
SEA Seattle/Tacoma Intl - YOW Ottawa
SEAYOW
Seattle/Tacoma Intl
Fri 10/23
10:30 am-12:30 pm
2 stops23h 00m
Ottawa
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$204
SeattleOttawa
SEA Seattle/Tacoma Intl - YOW Ottawa
SEAYOW
Seattle/Tacoma Intl
Tue 12/8
11:43 pm-1:26 pm
1 stop10h 43m
Ottawa
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$209
SeattleOttawa
SEA Seattle/Tacoma Intl - YOW Ottawa
SEAYOW
Seattle/Tacoma Intl
Sun 9/27
6:43 pm-5:16 pm
2 stops19h 33m
Ottawa
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$219
SeattleOttawa
SEA Seattle/Tacoma Intl - YOW Ottawa
SEAYOW
Seattle/Tacoma Intl
Fri 10/2
7:35 pm-5:35 am
1 stop7h 00m
Ottawa
Mon 10/5
4:15 pm-6:45 pm
1 stop29h 30m
$315
Quickest round-trip
SeattleOttawa
SEA Seattle/Tacoma Intl - YOW Ottawa
SEAYOW
Seattle/Tacoma Intl
Thu 9/17
11:04 pm-9:56 am
1 stop7h 52m
Ottawa
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$327
SeattleOttawa
SEA Seattle/Tacoma Intl - YOW Ottawa
SEAYOW
Seattle/Tacoma Intl
Tue 10/6
7:35 pm-5:35 am
1 stop7h 00m
Ottawa
Tue 10/13
6:15 pm-6:45 pm
2 stops27h 30m
$353
SeattleOttawa
SEA Seattle/Tacoma Intl - YOW Ottawa
SEAYOW
Seattle/Tacoma Intl
Sun 10/4
10:30 am-5:35 am
1 stop16h 05m
Ottawa
Sun 10/11
4:15 pm-6:45 pm
1 stop29h 30m
$391
SeattleOttawa
SEA Seattle/Tacoma Intl - YOW Ottawa
SEAYOW
Seattle/Tacoma Intl
Sat 11/7
2:20 pm-2:30 pm
1 stop21h 10m
Ottawa
Sat 11/14
4:20 pm-1:40 pm
1 stop24h 20m
$442
Showing 1-10 of 13 resultsSorted by cheapest first
Compare providers for flights from Seattle to Ottawa
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Ottawa in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Ottawa flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Ottawa flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Ottawa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Ottawa
Have a flexible travel schedule? Discover the best time to fly to Ottawa from Seattle with our price prediction graph.
SEA-YOW
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Ottawa
Reviews of airlines servicing Ottawa
Get insights into the airlines that provide service to Ottawa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ottawa. Reviews last updated September 11, 2026.
Read reviews from past customers who have flown United Airlines,WestJet, andAir Canada from Seattle to Ottawa. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.1
Boarding
7.7
Comfort
7.3
Food
6.7
Overall
7.4
Entertainment
7.1
Reviews
1 / 20
6.0
GoodMiz,Oct 2024
EWR - YYZ
Crew
8.1
Boarding
7.7
Comfort
7.3
Food
6.7
Overall
7.4
Entertainment
7.1
Reviews
1 / 20
6.0
GoodMiz,Oct 2024
EWR - YYZ
Crew
8.1
Boarding
7.7
Comfort
7.3
Food
6.7
Overall
7.4
Entertainment
7.1
Reviews
1 / 20
6.0
GoodMiz,Oct 2024
EWR - YYZ
Crew
8.1
Boarding
7.7
Comfort
7.3
Food
6.7
Overall
7.4
Entertainment
7.1
Reviews
1 / 20
6.0
GoodMiz,Oct 2024
EWR - YYZ
Related info for your journey
Find useful and relevant information for your journey from Seattle to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Ottawa?
Book flights to Ottawa if you plan to visit one of these locationsGatineau
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Complete your trip to Ottawa by adding a car rental and/or hotel reservation to your travel itinerary.
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Seattle and Ottawa flights
Browse other Seattle and Ottawa flight options. Last updated on September 11, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on September 11, 2026.
Other flights to Ottawa
Explore flights to Ottawa departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Seattle to Ottawa
Discover the top 3 airlines that operate flights from Seattle to Ottawa. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$266 | Average$409 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$307 | Average$601 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$312 | Average$614 | FlexibilityNo cancel fee | On-time69% |