$163+ 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 29 — Aug 51
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 16 days in advance, depart on a Tuesday or Wednesday 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 29, 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 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/28. 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
SEA
- YYZ
1 stop7h 10m
WestJet
Tue 10/277:45 am
YYZ
- SEA
1 stop9h 35m
WestJet
Deal found 6/28![WestJet logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 10/27:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Mon 10/51:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/26![WestJet logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 9/187:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Wed 9/2312:00 pm
YYZ
- SEA
1 stop9h 45m
WestJet
Deal found 6/25![WestJet logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 10/147:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Sat 10/171:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/25![WestJet logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 9/97:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Thu 9/241:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/25![WestJet logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 9/1910:30 am
SEA
- YYZ
1 stop7h 45m
WestJet
Wed 9/301:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/25![WestJet logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 9/97:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Fri 9/251:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/25![WestJet logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 9/107:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Fri 9/251:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/25![WestJet logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 9/1310:30 am
SEA
- YYZ
1 stop7h 45m
WestJet
Wed 9/2312:00 pm
YYZ
- SEA
1 stop9h 45m
WestJet
Deal found 6/25![WestJet logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 9/1910:30 am
SEA
- YYZ
1 stop7h 45m
WestJet
Wed 9/2312:00 pm
YYZ
- SEA
1 stop9h 45m
WestJet
Deal found 6/25![WestJet logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 9/1310:30 am
SEA
- YYZ
1 stop7h 45m
WestJet
Fri 9/251:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/25![WestJet logo]()
$352
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 29, 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 29, 2026.
This United Airlines deal was found by Cheapflights users on 6/27. 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.
Sat 8/223:30 pm
SEA
- YYZ
1 stop12h 30m
United Airlines
Sun 8/3012:45 pm
YYZ
- SEA
1 stop11h 00m
United Airlines
Deal found 6/27![United Airlines logo]()
$506
This Delta deal was found by Cheapflights users on 6/26. 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 9/18:59 pm
SEA
- YYZ
2 stops10h 26m
Delta
Wed 9/96:00 am
YYZ
- SEA
2 stops10h 51m
Delta
Deal found 6/26![Delta logo]()
$520
This Alaska Airlines deal was found by Cheapflights users on 6/27. 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.
Mon 9/2112:16 am
SEA
- YYZ
1 stop7h 43m
Alaska Airlines
Wed 9/234:55 pm
YYZ
- SEA
Nonstop5h 18m
Alaska Airlines
Deal found 6/27![Alaska Airlines logo]()
$566
This United Airlines deal was found by Cheapflights users on 6/27. 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.
Sat 8/155:20 pm
SEA
- YYZ
1 stop10h 40m
United Airlines
Tue 8/256:10 am
YYZ
- SEA
2 stops17h 33m
United Airlines
Deal found 6/27![United Airlines logo]()
$511
This Alaska Airlines deal was found by Cheapflights users on 6/24. 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.
Sun 9/137:52 am
SEA
- YYZ
Nonstop4h 53m
Alaska Airlines
Sat 9/264:55 pm
YYZ
- SEA
Nonstop5h 18m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$625
This United Airlines deal was found by Cheapflights users on 6/25. 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.
Sun 7/265:15 am
SEA
- YYZ
1 stop7h 55m
United Airlines
Sun 8/166:10 am
YYZ
- SEA
1 stop9h 38m
United Airlines
Deal found 6/25![United Airlines logo]()
$609
This Alaska Airlines deal was found by Cheapflights users on 6/25. 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.
Fri 9/117:52 am
SEA
- YYZ
Nonstop4h 53m
Alaska Airlines
Sat 9/264:55 pm
YYZ
- SEA
Nonstop5h 18m
Alaska Airlines
Deal found 6/25![Alaska Airlines logo]()
$639
This United Airlines deal was found by Cheapflights users on 6/24. 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.
Wed 8/195:00 am
SEA
- YYZ
2 stops12h 44m
United Airlines
Sun 8/234:18 pm
YYZ
- SEA
1 stop9h 46m
United Airlines
Deal found 6/24![United Airlines logo]()
$651
This Alaska Airlines deal was found by Cheapflights users on 6/24. 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.
Sun 9/137:52 am
SEA
- YYZ
Nonstop4h 53m
Alaska Airlines
Sun 9/274:55 pm
YYZ
- SEA
Nonstop5h 18m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$673
This Alaska Airlines deal was found by Cheapflights users on 6/28. 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 9/27:59 am
SEA
- YYZ
Nonstop4h 46m
Alaska Airlines
Mon 9/74:55 pm
YYZ
- SEA
Nonstop5h 18m
Alaska Airlines
Deal found 6/28![Alaska Airlines logo]()
$687
This Alaska Airlines deal was found by Cheapflights users on 6/27. 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.
Sat 7/48:00 am
SEA
- YYZ
Nonstop4h 45m
Alaska Airlines
Fri 7/104:55 pm
YYZ
- SEA
Nonstop5h 30m
Alaska Airlines
Deal found 6/27![Alaska Airlines logo]()
$696
This Alaska Airlines deal was found by Cheapflights users on 6/24. 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.
Sat 9/127:52 am
SEA
- YYZ
Nonstop4h 53m
Alaska Airlines
Fri 9/254:55 pm
YYZ
- SEA
Nonstop5h 18m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$788
Last-minute flights from Seattle to Niagara FallsDiscover last-minute flight deals from Seattle to Niagara Falls. Data last updated June 29, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Niagara Falls. Data last updated June 29, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 7/117:35 pm
SEA
- YYZ
1 stop8h 20m
WestJet
Fri 7/1712:00 pm
YYZ
- SEA
2 stops12h 00m
WestJet
Deal found 6/25![WestJet logo]()
$386
This Trip.com deal was found by Cheapflights users on 6/25. 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.
Tue 7/147:35 pm
SEA
- YYZ
1 stop8h 20m
WestJet
Thu 7/162:50 pm
YYZ
- SEA
1 stop9h 10m
WestJet
Deal found 6/25![WestJet logo]()
$388
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 7/147:35 pm
SEA
- YYZ
1 stop8h 20m
WestJet
Fri 7/1712:00 pm
YYZ
- SEA
2 stops9h 45m
WestJet
Deal found 6/28![WestJet logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 7/167:35 pm
SEA
- YYZ
1 stop8h 20m
WestJet
Wed 8/123:50 pm
YYZ
- SEA
1 stop8h 10m
WestJet
Deal found 6/25![WestJet logo]()
$392
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 7/177:00 am
SEA
- YYZ
2 stops11h 10m
WestJet
Sat 7/2512:00 pm
YYZ
- SEA
1 stop9h 45m
WestJet
Deal found 6/28![WestJet logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 7/2210:30 am
SEA
- YYZ
2 stops10h 29m
WestJet
Wed 8/123:50 pm
YYZ
- SEA
1 stop8h 10m
WestJet
Deal found 6/25![WestJet logo]()
$396
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 7/237:00 am
SEA
- YYZ
2 stops11h 10m
WestJet
Tue 7/281:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/28![WestJet logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 7/237:00 am
SEA
- YYZ
2 stops11h 10m
WestJet
Wed 8/123:50 pm
YYZ
- SEA
1 stop8h 10m
WestJet
Deal found 6/25![WestJet logo]()
$399
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 29, 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 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/24. 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 9/67:00 am
SEA
- YYZ
2 stops11h 10m
WestJet
Deal found 6/24![WestJet logo]()
$163
This FlightHub deal was found by Cheapflights users on 6/24. 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 9/247:35 pm
SEA
- YYZ
1 stop8h 20m
WestJet
Deal found 6/24![WestJet logo]()
$171
This deal was found by Cheapflights users on 6/28. 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.
Wed 9/97:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Deal found 6/28![WestJet logo]()
$174
This FlightHub deal was found by Cheapflights users on 6/27. 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 9/87:00 am
SEA
- YYZ
2 stops11h 35m
WestJet
Deal found 6/27![WestJet logo]()
$178
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 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $323 (Kiwi.com) |
One-way from | $163 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $389 |
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 29, 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
Sat 8/22
3:30 pm-7:00 am
1 stop12h 30m
Toronto Pearson Intl
Sun 8/30
12:45 pm-8:45 pm
1 stop11h 00m
$506
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sat 8/15
5:20 pm-7:00 am
1 stop10h 40m
Toronto Pearson Intl
Tue 8/25
6:10 am-8:43 pm
2 stops17h 33m
$511
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Tue 9/1
8:59 pm-10:25 am
2 stops10h 26m
Toronto Pearson Intl
Wed 9/9
6:00 am-1:51 pm
2 stops10h 51m
$520
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Mon 9/21
12:16 am-10:59 am
1 stop7h 43m
Toronto Pearson Intl
Wed 9/23
4:55 pm-7:13 pm
Nonstop5h 18m
$566
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sun 7/26
5:15 am-4:10 pm
1 stop7h 55m
Toronto Pearson Intl
Sun 8/16
6:10 am-12:48 pm
1 stop9h 38m
$609
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sun 9/13
7:52 am-3:45 pm
Nonstop4h 53m
Toronto Pearson Intl
Sat 9/26
4:55 pm-7:13 pm
Nonstop5h 18m
$625
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Fri 9/11
7:52 am-3:45 pm
Nonstop4h 53m
Toronto Pearson Intl
Sat 9/26
4:55 pm-7:13 pm
Nonstop5h 18m
$639
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Wed 8/19
5:00 am-8:44 pm
2 stops12h 44m
Toronto Pearson Intl
Sun 8/23
4:18 pm-11:04 pm
1 stop9h 46m
$651
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sun 9/13
7:52 am-3:45 pm
Nonstop4h 53m
Toronto Pearson Intl
Sun 9/27
4:55 pm-7:13 pm
Nonstop5h 18m
$673
Quickest round-trip
SeattleToronto
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Wed 9/2
7:59 am-3:45 pm
Nonstop4h 46m
Toronto Pearson Intl
Mon 9/7
4:55 pm-7:13 pm
Nonstop5h 18m
$687
Showing 1-10 of 24 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 29, 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 29, 2026.
The most flights from SEA to NI4 are scheduled on a Wednesday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 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 29, 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.
Food
7.0
Overall
7.9
Entertainment
7.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Overall
7.9
Entertainment
7.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Overall
7.9
Entertainment
7.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Overall
7.9
Entertainment
7.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Overall
7.9
Entertainment
7.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Overall
7.9
Entertainment
7.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$132 | Average$390 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$142 | Average$413 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$226 | Average$311 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$250 | Average$456 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$277 | Average$380 | FlexibilityNo cancel fee | On-time69% |