$190+ Cheap flights from Seattle (SEA) to Niagara Falls, Canada
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
Sep 13 — Sep 201
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Niagara Falls 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.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Niagara Falls are usually found in January or February, booked 83 days in advance, depart on a Tuesday or Wednesday and return on a Friday
Cheap flight deals from Seattle to Niagara Falls
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to Niagara FallsExplore the most affordable flight options available from Seattle to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2026.
Explore the most affordable flight options available from Seattle to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Sun 10/47:35 pm -
1 stop7h 10m
Fri 10/231:30 pm -
1 stop8h 15m
Deal found 8/13![WestJet logo]()
$369
This FlightHub deal was found by Cheapflights users on 8/14. 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.
Sat 9/197:35 pm -
2 stops9h 25m
Tue 9/2211:10 pm -
2 stops13h 30m
Deal found 8/14![WestJet logo]()
$370
This Justfly.com deal was found by Cheapflights users on 8/12. 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.
Mon 9/77:00 am -
1 stop25h 55m
Mon 9/1411:10 pm -
2 stops13h 30m
Deal found 8/12![WestJet logo]()
$371
This Justfly.com deal was found by Cheapflights users on 8/13. 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.
Mon 9/217:35 pm -
2 stops9h 25m
Thu 9/248:00 am -
2 stops13h 45m
Deal found 8/13![WestJet logo]()
$372
This FlightHub deal was found by Cheapflights users on 8/14. 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.
Thu 9/107:35 pm -
1 stop7h 10m
Sun 9/1310:25 pm -
1 stop14h 15m
Deal found 8/14![WestJet logo]()
$373
This WestJet deal was found by Cheapflights users on 8/12. 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.
Sun 9/207:35 pm -
1 stop8h 20m
Wed 9/3012:00 pm -
1 stop9h 45m
Deal found 8/12![WestJet logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
Thu 9/2410:30 am -
2 stops8h 05m
Wed 9/301:30 pm -
1 stop8h 15m
Deal found 8/12![WestJet logo]()
$375
This Justfly.com deal was found by Cheapflights users on 8/12. 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.
Mon 9/287:35 pm -
2 stops21h 20m
Wed 10/712:40 pm -
2 stops9h 05m
Deal found 8/12![WestJet logo]()
$376
This deal was found by Cheapflights users on 8/13. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:30 am -
1 stop11h 35m
Mon 9/2810:00 am -
1 stop11h 45m
Deal found 8/13![WestJet logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
Sun 9/277:35 pm -
1 stop7h 10m
Mon 10/58:00 am -
2 stops13h 45m
Deal found 8/12![WestJet logo]()
$378
This Justfly.com deal was found by Cheapflights users on 8/12. 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 stop8h 20m
Wed 9/234:55 pm -
Nonstop5h 18m
Deal found 8/12![Multiple Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Thu 10/110:30 am -
2 stops8h 05m
Fri 10/910:25 pm -
1 stop14h 15m
Deal found 8/13![WestJet logo]()
$380
Best flights from Seattle to Niagara FallsDiscover carefully curated flight deals from Seattle to Niagara Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2026.
Discover carefully curated flight deals from Seattle to Niagara Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2026.
This Delta deal was found by Cheapflights users on 8/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:50 pm -
2 stops9h 45m
Tue 9/2212:25 pm -
2 stops12h 40m
Deal found 8/10![Delta logo]()
$524
This Alaska Airlines deal was found by Cheapflights users on 8/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:19 am -
Nonstop4h 46m
Mon 11/165:15 pm -
Nonstop5h 30m
Deal found 8/9![Alaska Airlines logo]()
$525
This United Airlines deal was found by Cheapflights users on 8/11. 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 10/1310:48 pm -
1 stop11h 59m
Sun 10/187:00 am -
1 stop7h 27m
Deal found 8/11![United Airlines logo]()
$604
This Alaska Airlines deal was found by Cheapflights users on 8/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/118:19 am -
Nonstop4h 46m
Mon 11/165:15 pm -
Nonstop5h 30m
Deal found 8/13![Alaska Airlines logo]()
$525
This Delta deal was found by Cheapflights users on 8/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:10 pm -
1 stop9h 09m
Wed 9/306:15 am -
1 stop8h 52m
Deal found 8/10![Delta logo]()
$548
This Delta deal was found by Cheapflights users on 8/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:59 pm -
1 stop8h 36m
Sat 9/54:10 pm -
1 stop8h 55m
Deal found 8/10![Delta logo]()
$567
This Alaska Airlines deal was found by Cheapflights users on 8/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:52 am -
Nonstop4h 53m
Thu 10/84:55 pm -
Nonstop5h 31m
Deal found 8/10![Alaska Airlines logo]()
$686
This Delta deal was found by Cheapflights users on 8/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/48:59 am -
1 stop11h 11m
Sun 9/135:54 pm -
1 stop9h 05m
Deal found 8/12![Delta logo]()
$650
This Delta deal was found by Cheapflights users on 8/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:16 am -
1 stop11h 43m
Tue 9/16:10 am -
2 stops10h 25m
Deal found 8/12![Delta logo]()
$706
Last-minute flights from Seattle to Niagara FallsDiscover last-minute flight deals from Seattle to Niagara Falls. Data last updated August 14, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Niagara Falls. Data last updated August 14, 2026 and is based on user searches.
This deal was found by Cheapflights users on 8/13. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:30 am -
1 stop11h 35m
Mon 9/2810:00 am -
1 stop11h 45m
Deal found 8/13![WestJet logo]()
$377
This Justfly.com deal was found by Cheapflights users on 8/12. 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.
Mon 9/77:00 am -
1 stop25h 55m
Mon 9/1411:10 pm -
2 stops13h 30m
Deal found 8/12![WestJet logo]()
$371
This FlightHub deal was found by Cheapflights users on 8/12. 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.
Wed 9/97:35 pm -
2 stops12h 40m
Mon 9/1411:10 pm -
2 stops13h 30m
Deal found 8/12![WestJet logo]()
$382
This FlightHub deal was found by Cheapflights users on 8/14. 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.
Thu 9/107:35 pm -
1 stop7h 10m
Sun 9/1310:25 pm -
1 stop14h 15m
Deal found 8/14![WestJet logo]()
$373
This Justfly.com deal was found by Cheapflights users on 8/12. 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 stop8h 20m
Wed 9/234:55 pm -
Nonstop5h 18m
Deal found 8/12![Multiple Airlines logo]()
$379
This FlightHub deal was found by Cheapflights users on 8/14. 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.
Sat 9/197:35 pm -
2 stops9h 25m
Tue 9/2211:10 pm -
2 stops13h 30m
Deal found 8/14![WestJet logo]()
$370
This WestJet deal was found by Cheapflights users on 8/12. 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.
Sun 9/207:35 pm -
1 stop8h 20m
Wed 9/3012:00 pm -
1 stop9h 45m
Deal found 8/12![WestJet logo]()
$374
This Justfly.com deal was found by Cheapflights users on 8/13. 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.
Mon 9/217:35 pm -
2 stops9h 25m
Thu 9/248:00 am -
2 stops13h 45m
Deal found 8/13![WestJet logo]()
$372
This FlightHub deal was found by Cheapflights users on 8/14. 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 9/227:35 pm -
2 stops12h 25m
Wed 9/3012:40 pm -
2 stops9h 05m
Deal found 8/14![WestJet logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
Thu 9/2410:30 am -
2 stops8h 05m
Wed 9/301:30 pm -
1 stop8h 15m
Deal found 8/12![WestJet logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
Sun 9/277:35 pm -
1 stop7h 10m
Mon 10/58:00 am -
2 stops13h 45m
Deal found 8/12![WestJet logo]()
$378
This Justfly.com deal was found by Cheapflights users on 8/12. 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.
Mon 9/287:35 pm -
2 stops21h 20m
Wed 10/712:40 pm -
2 stops9h 05m
Deal found 8/12![WestJet logo]()
$376
One-way flights from Seattle to Niagara FallsSearch for one-way flight options from Seattle to Niagara Falls. Find affordable one-way fares based on user searches. Data last updated August 14, 2026.
Search for one-way flight options from Seattle to Niagara Falls. Find affordable one-way fares based on user searches. Data last updated August 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Sat 9/127:35 pm -
1 stop8h 20m
Deal found 8/9![WestJet logo]()
$190
This CheapOair deal was found by Cheapflights users on 8/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:35 pm -
2 stops14h 10m
Deal found 8/13![WestJet logo]()
$191
This Justfly.com deal was found by Cheapflights users on 8/9. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:30 am -
1 stop9h 15m
Deal found 8/9![WestJet logo]()
$192
This FlightHub deal was found by Cheapflights users on 8/9. 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.
Thu 9/1710:30 am -
2 stops8h 05m
Deal found 8/9![WestJet logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Tue 9/17:07 pm -
2 stops23h 48m
Deal found 8/13![Multiple Airlines logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
Sun 9/2010:30 am -
3 stops32h 05m
Deal found 8/12![WestJet logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 10m
Deal found 8/12![WestJet logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:48 pm -
1 stop20h 21m
Deal found 8/10![Multiple Airlines logo]()
$199
This FlightHub deal was found by Cheapflights users on 8/12. 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.
Thu 9/310:30 am -
1 stop11h 35m
Deal found 8/12![WestJet logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Wed 9/27:06 pm -
2 stops23h 49m
Deal found 8/13![Multiple Airlines logo]()
$201
Find flight deals from Seattle to Niagara Falls
Keep the following information in mind while searching for Seattle to Niagara Falls flight deals. Data was last updated August 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $369 (Kiwi.com) |
One-way from | $190 (Kiwi.com) |
Popular in | August |
Cheapest in | January |
Average price | $506 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Niagara Falls 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 2,558,603 searches. Data last updated August 14, 2026.
Use the filters below to find and compare flights from Seattle to Niagara Falls that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Tue 9/15
10:50 pm-11:35 am
2 stops9h 45m
Toronto Pearson Intl
Tue 9/22
12:25 pm-10:05 pm
2 stops12h 40m
$524
Quickest round-trip
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Tue 11/10
8:19 am-4:05 pm
Nonstop4h 46m
Toronto Pearson Intl
Mon 11/16
5:15 pm-7:45 pm
Nonstop5h 30m
$525
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Wed 11/11
8:19 am-4:05 pm
Nonstop4h 46m
Toronto Pearson Intl
Mon 11/16
5:15 pm-7:45 pm
Nonstop5h 30m
$525
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Tue 9/1
11:10 pm-11:19 am
1 stop9h 09m
Toronto Pearson Intl
Wed 9/30
6:15 am-12:07 pm
1 stop8h 52m
$548
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Tue 9/1
11:59 pm-11:35 am
1 stop8h 36m
Toronto Pearson Intl
Sat 9/5
4:10 pm-10:05 pm
1 stop8h 55m
$567
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Tue 10/13
10:48 pm-1:47 pm
1 stop11h 59m
Toronto Pearson Intl
Sun 10/18
7:00 am-11:27 am
1 stop7h 27m
$604
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Fri 9/4
8:59 am-11:10 pm
1 stop11h 11m
Toronto Pearson Intl
Sun 9/13
5:54 pm-11:59 pm
1 stop9h 05m
$650
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Wed 9/30
7:52 am-3:45 pm
Nonstop4h 53m
Toronto Pearson Intl
Thu 10/8
4:55 pm-7:26 pm
Nonstop5h 31m
$686
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Fri 8/28
7:16 am-9:59 pm
1 stop11h 43m
Toronto Pearson Intl
Tue 9/1
6:10 am-1:35 pm
2 stops10h 25m
$706
Cheapest one-way
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Thu 9/10
11:05 pm-8:53 am
1 stop6h 48m
$255
Showing 1-10 of 19 resultsSorted by cheapest first
Best time to book a flight from Seattle to Niagara Falls
Have a flexible travel schedule? Discover the best time to fly to Niagara Falls from Seattle with our price prediction graph.
SEA-YYZ
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 Niagara Falls
SEA-NI4
SEA-YYZ
What is the cheapest time of day to fly from SEA to NI4?
Find hourly flight availability from Seattle to Niagara Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2026.
When flying from Seattle to Niagara Falls, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from Seattle to Niagara Falls
Explore weekly flight availability from Seattle to Niagara Falls. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 14, 2026.
The most flights from SEA to NI4 are scheduled on a Wednesday (5 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from Seattle to Niagara Falls?
Airfare is below average for this route at the moment.
Seattle to Niagara Falls flights typically cost between $385 and $812 in October.The cheapest round-trip price found within the last 5 days was $369 on WestJet (Oct 4-Oct 23).
Reviews of airlines servicing Niagara Falls
Get insights into the airlines that provide service to Niagara Falls. 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 Niagara Falls. Reviews last updated August 14, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Seattle to Niagara Falls to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Food
7.0
Entertainment
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Crew
8.5
Food
7.0
Entertainment
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Crew
8.5
Food
7.0
Entertainment
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Crew
8.5
Food
7.0
Entertainment
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Crew
8.5
Food
7.0
Entertainment
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Crew
8.5
Food
7.0
Entertainment
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$132 | Average$419 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$132 | Average$414 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$226 | Average$362 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$250 | Average$462 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$277 | Average$446 | FlexibilityNo cancel fee | On-time69% |