$158+ Cheap flights from Seattle (SEA) to Niagara Falls, ON, 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
Jul 10 — Jul 171
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 54 days in advance, depart on a Tuesday or Friday and return on a Thursday
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 June 10, 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 June 10, 2026.
This CheapOair deal was found by Cheapflights users on 6/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Wed 10/71:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/8![WestJet logo]()
$369
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Thu 7/27:00 am
SEA
- YYZ
1 stop7h 10m
WestJet
Tue 7/141:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/9![WestJet logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Tue 7/77:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Tue 7/141:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/9![WestJet logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Thu 9/247:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Mon 9/281:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/9![WestJet logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Tue 6/307:35 pm
SEA
- YYZ
1 stop8h 20m
WestJet
Wed 7/83:50 pm
YYZ
- SEA
1 stop8h 10m
WestJet
Deal found 6/9![WestJet logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Sun 8/237:00 am
SEA
- YYZ
2 stops11h 10m
WestJet
Fri 9/41:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/9![WestJet logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 8/297:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Fri 9/412:00 pm
YYZ
- SEA
2 stops9h 45m
WestJet
Deal found 6/9![WestJet logo]()
$383
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Thu 8/277:00 am
SEA
- YYZ
2 stops11h 10m
WestJet
Mon 8/313:50 pm
YYZ
- SEA
1 stop8h 10m
WestJet
Deal found 6/9![WestJet logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Wed 8/2610:30 am
SEA
- YYZ
1 stop9h 15m
WestJet
Fri 9/41:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/9![WestJet logo]()
$389
This Air Canada deal was found by Cheapflights users on 6/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:00 pm
SEA
- YYZ
1 stop7h 35m
Air Canada
Thu 8/274:20 pm
YYZ
- SEA
1 stop9h 22m
Air Canada
Deal found 6/8![Air Canada logo]()
$390
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 June 10, 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 June 10, 2026.
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:00 am
SEA
- YYZ
Nonstop4h 50m
United Airlines
Sun 9/207:30 am
YYZ
- SEA
1 stop9h 58m
United Airlines
Deal found 6/9![United Airlines logo]()
$465
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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.
Wed 9/237:52 am
SEA
- YYZ
Nonstop4h 53m
Alaska Airlines
Sat 9/264:55 pm
YYZ
- SEA
Nonstop5h 18m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$482
This Delta deal was found by Cheapflights users on 6/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
SEA
- YYZ
1 stop8h 19m
Delta
Sun 9/66:10 am
YYZ
- SEA
1 stop7h 21m
Delta
Deal found 6/7![Delta logo]()
$496
This United deal was found by Cheapflights users on 6/8. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:00 am
SEA
- YYZ
1 stop9h 37m
Multiple Airlines
Mon 7/139:10 pm
YYZ
- SEA
1 stop15h 57m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$505
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:00 pm
SEA
- YYZ
1 stop7h 54m
United Airlines
Tue 9/112:25 pm
YYZ
- SEA
1 stop9h 42m
United Airlines
Deal found 6/9![United Airlines logo]()
$496
This Delta deal was found by Cheapflights users on 6/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:30 am
SEA
- YYZ
2 stops12h 34m
Delta
Sat 11/149:45 am
YYZ
- SEA
1 stop7h 38m
Delta
Deal found 6/9![Delta logo]()
$511
This Delta deal was found by Cheapflights users on 6/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/288:59 am
SEA
- YYZ
1 stop6h 35m
Delta
Tue 9/11:38 pm
YYZ
- SEA
2 stops11h 00m
Delta
Deal found 6/8![Delta logo]()
$524
This Alaska Airlines deal was found by Cheapflights users on 6/5. 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 9/237:52 am
SEA
- YYZ
Nonstop4h 53m
Alaska Airlines
Sun 9/274:55 pm
YYZ
- SEA
Nonstop5h 18m
Alaska Airlines
Deal found 6/5![Alaska Airlines logo]()
$579
This Delta deal was found by Cheapflights users on 6/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:59 pm
SEA
- YYZ
2 stops10h 26m
Delta
Sat 8/299:45 am
YYZ
- SEA
1 stop7h 49m
Delta
Deal found 6/6![Delta logo]()
$524
Last-minute flights from Seattle to Niagara FallsDiscover last-minute flight deals from Seattle to Niagara Falls. Data last updated June 10, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Niagara Falls. Data last updated June 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Tue 6/307:35 pm
SEA
- YYZ
1 stop8h 20m
WestJet
Wed 7/83:50 pm
YYZ
- SEA
1 stop8h 10m
WestJet
Deal found 6/9![WestJet logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 6/307:35 pm
SEA
- YYZ
1 stop8h 20m
WestJet
Sun 7/510:20 pm
YYZ
- SEA
2 stops14h 20m
WestJet
Deal found 6/10![WestJet logo]()
$402
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Wed 7/110:30 am
SEA
- YYZ
1 stop9h 15m
WestJet
Tue 7/710:20 pm
YYZ
- SEA
2 stops14h 20m
WestJet
Deal found 6/9![WestJet logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Thu 7/27:00 am
SEA
- YYZ
1 stop7h 10m
WestJet
Tue 7/141:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/9![WestJet logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Thu 7/210:30 am
SEA
- YYZ
1 stop7h 45m
WestJet
Tue 7/72:25 pm
YYZ
- SEA
2 stops22h 15m
WestJet
Deal found 6/9![WestJet logo]()
$401
This Justfly.com deal was found by Cheapflights users on 6/9. 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.
Fri 7/310:30 am
SEA
- YYZ
2 stops10h 29m
WestJet
Fri 7/175:20 pm
YYZ
- SEA
2 stops19h 20m
WestJet
Deal found 6/9![WestJet logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Tue 7/77:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Tue 7/141:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/9![WestJet logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Wed 7/87:00 am
SEA
- YYZ
2 stops9h 00m
WestJet
Tue 7/141:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/9![WestJet logo]()
$383
This Trip.com deal was found by Cheapflights users on 6/9. 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 7/247:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Wed 7/292:50 pm
YYZ
- SEA
1 stop9h 10m
WestJet
Deal found 6/9![WestJet logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/2510:30 am
SEA
- YYZ
2 stops10h 29m
WestJet
Wed 7/292:50 pm
YYZ
- SEA
1 stop9h 10m
WestJet
Deal found 6/9![WestJet logo]()
$392
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 June 10, 2026.
Search for one-way flight options from Seattle to Niagara Falls. Find affordable one-way fares based on user searches. Data last updated June 10, 2026.
This CheapOair deal was found by Cheapflights users on 6/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/610:30 am
SEA
- YYZ
2 stops10h 29m
WestJet
Deal found 6/8![WestJet logo]()
$158
This oojo deal was found by Cheapflights users on 6/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/110:30 am
SEA
- YYZ
2 stops10h 29m
WestJet
Deal found 6/9![WestJet logo]()
$179
This oojo deal was found by Cheapflights users on 6/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/3010:30 am
SEA
- YYZ
2 stops10h 29m
WestJet
Deal found 6/9![WestJet logo]()
$180
This Booking.com deal was found by Cheapflights users on 6/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2910:30 am
SEA
- YYZ
1 stop9h 15m
WestJet
Deal found 6/6![WestJet logo]()
$181
This Justfly.com deal was found by Cheapflights users on 6/9. 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.
Wed 7/810:30 am
SEA
- YYZ
1 stop9h 15m
WestJet
Deal found 6/9![WestJet logo]()
$184
This CheapOair deal was found by Cheapflights users on 6/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/710:30 am
SEA
- YYZ
2 stops10h 29m
WestJet
Deal found 6/8![WestJet logo]()
$185
This CheapOair deal was found by Cheapflights users on 6/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2110:30 am
SEA
- YYZ
2 stops10h 29m
WestJet
Deal found 6/8![WestJet logo]()
$186
This Justfly.com deal was found by Cheapflights users on 6/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:30 am
SEA
- YYZ
2 stops10h 29m
WestJet
Deal found 6/8![WestJet logo]()
$187
This oojo deal was found by Cheapflights users on 6/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/2610:30 am
SEA
- YYZ
2 stops10h 29m
WestJet
Deal found 6/9![WestJet logo]()
$190
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 June 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $369 (CheapOair) |
One-way from | $158 (CheapOair) |
Popular in | December |
Cheapest in | January |
Average price | $453 |
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 June 10, 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 - YYZ
SEAYYZ
Seattle/Tacoma Intl
Thu 9/17
8:00 am-3:50 pm
Nonstop4h 50m
Toronto Pearson Intl
Sun 9/20
7:30 am-2:28 pm
1 stop9h 58m
$465
Quickest round-trip
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Wed 9/23
7:52 am-3:45 pm
Nonstop4h 53m
Toronto Pearson Intl
Sat 9/26
4:55 pm-7:13 pm
Nonstop5h 18m
$482
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Tue 9/1
6:00 am-5:19 pm
1 stop8h 19m
Toronto Pearson Intl
Sun 9/6
6:10 am-10:31 am
1 stop7h 21m
$496
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Fri 8/28
11:00 pm-9:54 am
1 stop7h 54m
Toronto Pearson Intl
Tue 9/1
12:25 pm-7:07 pm
1 stop9h 42m
$496
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Fri 7/10
7:00 am-7:37 pm
1 stop9h 37m
Toronto Pearson Intl
Mon 7/13
9:10 pm-10:07 am
1 stop15h 57m
$505
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Tue 11/10
7:30 am-11:04 pm
2 stops12h 34m
Toronto Pearson Intl
Sat 11/14
9:45 am-2:23 pm
1 stop7h 38m
$511
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Fri 8/28
8:59 am-6:34 pm
1 stop6h 35m
Toronto Pearson Intl
Tue 9/1
1:38 pm-9:38 pm
2 stops11h 00m
$524
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Tue 8/25
8:59 pm-10:25 am
2 stops10h 26m
Toronto Pearson Intl
Sat 8/29
9:45 am-2:34 pm
1 stop7h 49m
$524
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Wed 9/23
7:52 am-3:45 pm
Nonstop4h 53m
Toronto Pearson Intl
Sun 9/27
4:55 pm-7:13 pm
Nonstop5h 18m
$579
Cheapest one-way
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Wed 6/24
7:39 am-10:23 pm
1 stop11h 44m
$214
Showing 1-10 of 20 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 June 10, 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 June 10, 2026.
The most flights from SEA to NI4 are scheduled on a Monday (5 on average). You will have fewer flight options on Thursday, 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?
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 June 10, 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.
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Related info for your journey
Find useful and relevant information for your journey from Seattle to Niagara Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Seattle
Popular flights
Top destinations
Alternative routes for Seattle to Niagara Falls
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Niagara Falls by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Niagara Falls by cabin class
Find flights from Seattle to Niagara Falls, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Niagara Falls flights
Browse other Seattle and Niagara Falls flight options. Last updated on June 10, 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 June 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Seattle to Niagara Falls flights
Consider these flights traveling from Seattle to Niagara Falls.
Top 5 airlines flying from Seattle to Niagara Falls
Discover the top 5 airlines that operate flights from Seattle to Niagara Falls. 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 2,558,603 searches. Data last updated June 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$132 | Average$395 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$142 | Average$408 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$226 | Average$310 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$250 | Average$451 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$277 | Average$386 | FlexibilityNo cancel fee | On-time69% |