Cheap flights from Niagara Falls to Seattle from C$ 285
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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SEA
5 Sep — 12 Sep1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Niagara Falls to Seattle/Tacoma Intl are usually found in February or January, booked 86 days in advance, depart on a Thursday or Friday and return on a Thursday
Cheap flight deals from Niagara Falls to Seattle
Enter your travel dates to find the best prices.
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One-way
Cheapest flights from Niagara Falls to Seattle
Explore the most affordable flight options available from Niagara Falls to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 August 2026.
Wed 16/91:30 p.m. -
1 stop8h 15m
Wed 30/910:30 a.m. -
2 stops8h 05m
Deal found 2/8C$ 479
Wed 23/912:40 p.m. -
2 stops9h 05m
Wed 30/910:30 a.m. -
2 stops8h 05m
Deal found 3/8C$ 483
Thu 24/91:30 p.m. -
1 stop8h 15m
Wed 30/97:35 p.m. -
1 stop7h 10m
Deal found 4/8C$ 486
Fri 11/912:40 p.m. -
2 stops9h 05m
Mon 21/97:35 p.m. -
1 stop7h 10m
Deal found 1/8C$ 487
Sat 19/912:40 p.m. -
2 stops9h 05m
Sun 4/107:35 p.m. -
1 stop8h 20m
Deal found 2/8C$ 489
Mon 31/812:00 p.m. -
1 stop9h 45m
Sun 6/97:35 p.m. -
1 stop7h 10m
Deal found 1/8C$ 492
Thu 1/101:30 p.m. -
1 stop8h 15m
Mon 5/107:35 p.m. -
1 stop8h 20m
Deal found 1/8C$ 493
Sun 20/93:30 p.m. -
2 stops21h 10m
Tue 29/910:30 a.m. -
2 stops8h 05m
Deal found 1/8C$ 494
Sat 26/912:40 p.m. -
2 stops9h 05m
Sat 3/107:35 p.m. -
1 stop8h 20m
Deal found 1/8C$ 497
Best flights from Niagara Falls to Seattle
Discover carefully curated flight deals from Niagara Falls to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 6 August 2026.
Tue 20/1012:10 p.m. -
1 stop9h 25m
Wed 21/1011:10 p.m. -
1 stop6h 39m
Deal found 5/8C$ 586
Tue 1/99:00 p.m. -
1 stop15h 35m
Tue 8/911:59 p.m. -
1 stop11h 25m
Deal found 4/8C$ 638
Wed 16/94:55 p.m. -
Nonstop5h 18m
Wed 23/98:40 a.m. -
1 stop11h 19m
Deal found 2/8C$ 886
Tue 15/912:08 p.m. -
1 stop9h 37m
Tue 29/96:00 a.m. -
1 stop8h 20m
Deal found 5/8C$ 586
Thu 20/86:00 a.m. -
1 stop11h 45m
Tue 25/85:30 a.m. -
1 stop6h 50m
Deal found 3/8C$ 668
Wed 19/810:45 a.m. -
1 stop15h 19m
Mon 31/85:15 p.m. -
1 stop18h 09m
Deal found 5/8C$ 761
Thu 20/810:45 a.m. -
1 stop13h 30m
Sun 23/85:00 a.m. -
1 stop13h 32m
Deal found 3/8C$ 764
Fri 11/94:55 p.m. -
Nonstop5h 18m
Mon 21/97:52 a.m. -
Nonstop4h 53m
Deal found 4/8C$ 976
Sun 9/810:15 a.m. -
1 stop8h 54m
Wed 2/910:40 a.m. -
2 stops11h 18m
Deal found 1/8C$ 886
Sat 15/85:50 p.m. -
1 stop7h 15m
Wed 19/811:18 a.m. -
1 stop8h 45m
Deal found 1/8C$ 959
Fri 14/86:10 a.m. -
1 stop18h 26m
Sat 12/93:30 p.m. -
1 stop12h 11m
Deal found 5/8C$ 924
Tue 18/81:00 p.m. -
1 stop9h 07m
Sat 22/810:40 a.m. -
2 stops11h 18m
Deal found 4/8C$ 979
Direct flights from Niagara Falls to Seattle
Explore direct flight options from Niagara Falls to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 6 August 2026.
Thu 24/96:45 p.m. -
Nonstop5h 19m
Wed 30/98:00 a.m. -
Nonstop4h 41m
Deal found 1/8C$ 503
Wed 21/104:55 p.m. -
Nonstop5h 31m
Wed 28/108:20 a.m. -
Nonstop4h 45m
Deal found 1/8C$ 539
Tue 29/94:55 p.m. -
Nonstop5h 18m
Wed 25/118:31 a.m. -
Nonstop4h 34m
Deal found 1/8C$ 541
Tue 29/96:45 p.m. -
Nonstop5h 19m
Thu 26/117:45 a.m. -
Nonstop4h 40m
Deal found 1/8C$ 551
Thu 22/106:45 p.m. -
Nonstop5h 19m
Thu 29/107:45 a.m. -
Nonstop4h 40m
Deal found 1/8C$ 560
Thu 1/106:45 p.m. -
Nonstop5h 19m
Fri 27/117:45 a.m. -
Nonstop4h 40m
Deal found 1/8C$ 562
Tue 20/106:45 p.m. -
Nonstop5h 19m
Wed 21/108:00 a.m. -
Nonstop4h 50m
Deal found 3/8C$ 563
Wed 23/96:45 p.m. -
Nonstop5h 19m
Wed 30/98:00 a.m. -
Nonstop4h 41m
Deal found 2/8C$ 565
Thu 24/96:45 p.m. -
Nonstop5h 19m
Tue 29/98:00 a.m. -
Nonstop4h 41m
Deal found 3/8C$ 574
Fri 2/106:45 p.m. -
Nonstop5h 19m
Sun 11/108:00 a.m. -
Nonstop4h 50m
Deal found 2/8C$ 583
Last-minute flights from Niagara Falls to Seattle
Discover last-minute flight deals from Niagara Falls to Seattle. Data last updated 6 August 2026 and is based on user searches.
Mon 31/812:00 p.m. -
1 stop9h 45m
Sun 6/97:35 p.m. -
1 stop7h 10m
Deal found 1/8C$ 492
Fri 4/912:00 p.m. -
2 stops9h 45m
Thu 24/910:30 a.m. -
2 stops8h 05m
Deal found 2/8C$ 493
Fri 11/912:40 p.m. -
2 stops9h 05m
Mon 21/97:35 p.m. -
1 stop7h 10m
Deal found 1/8C$ 487
Wed 16/91:30 p.m. -
1 stop8h 15m
Wed 30/910:30 a.m. -
2 stops8h 05m
Deal found 2/8C$ 479
Sat 19/912:40 p.m. -
2 stops9h 05m
Sun 4/107:35 p.m. -
1 stop8h 20m
Deal found 2/8C$ 489
Sun 20/93:30 p.m. -
2 stops21h 10m
Tue 29/910:30 a.m. -
2 stops8h 05m
Deal found 1/8C$ 494
Wed 23/912:40 p.m. -
2 stops9h 05m
Wed 30/910:30 a.m. -
2 stops8h 05m
Deal found 3/8C$ 483
Thu 24/91:30 p.m. -
1 stop8h 15m
Wed 30/97:35 p.m. -
1 stop7h 10m
Deal found 4/8C$ 486
Sat 26/912:40 p.m. -
2 stops9h 05m
Sat 3/107:35 p.m. -
1 stop8h 20m
Deal found 1/8C$ 497
One-way flights from Niagara Falls to Seattle
Search for one-way flight options from Niagara Falls to Seattle. Find affordable one-way fares based on user searches. Data last updated 6 August 2026.
Tue 15/97:45 a.m. -
2 stops9h 37m
Deal found 3/8C$ 285
Mon 21/912:40 p.m. -
2 stops9h 05m
Deal found 2/8C$ 286
Thu 27/812:00 p.m. -
2 stops9h 45m
Deal found 3/8C$ 288
Fri 4/912:00 p.m. -
2 stops9h 45m
Deal found 2/8C$ 289
Wed 30/91:30 p.m. -
1 stop8h 15m
Deal found 1/8C$ 291
Tue 15/911:10 p.m. -
2 stops13h 30m
Deal found 3/8C$ 292
Sun 6/912:00 p.m. -
2 stops9h 45m
Deal found 1/8C$ 294
Sun 27/911:10 p.m. -
2 stops13h 30m
Deal found 1/8C$ 295
Wed 23/912:00 p.m. -
1 stop9h 45m
Deal found 3/8C$ 296
Thu 3/912:00 p.m. -
2 stops12h 00m
Deal found 3/8C$ 298
Fri 11/98:35 p.m. -
1 stop16h 07m
Deal found 2/8C$ 302
Find flight deals from Niagara Falls to Seattle
Keep the following information in mind while searching for Niagara Falls to Seattle flight deals. Data was last updated 6 August 2026.
Customize your flight search to find flights from Niagara Falls to Seattle 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 629,999 searches. Data last updated 6 August 2026.
Use the filters below to find and compare flights from Niagara Falls to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest round-trip
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Tue 20/10
12:10 p.m.-6:35 p.m.
1 stop9h 25m
Seattle/Tacoma Intl
Wed 21/10
11:10 p.m.-8:49 a.m.
1 stop6h 39m
C$ 586
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Tue 15/9
12:08 p.m.-6:45 p.m.
1 stop9h 37m
Seattle/Tacoma Intl
Tue 29/9
6:00 a.m.-5:20 p.m.
1 stop8h 20m
C$ 586
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Tue 1/9
9:00 p.m.-9:35 a.m.
1 stop15h 35m
Seattle/Tacoma Intl
Tue 8/9
11:59 p.m.-2:24 p.m.
1 stop11h 25m
C$ 638
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Thu 20/8
6:00 a.m.-2:45 p.m.
1 stop11h 45m
Seattle/Tacoma Intl
Tue 25/8
5:30 a.m.-3:20 p.m.
1 stop6h 50m
C$ 668
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Wed 19/8
10:45 a.m.-11:04 p.m.
1 stop15h 19m
Seattle/Tacoma Intl
Mon 31/8
5:15 p.m.-2:24 p.m.
1 stop18h 09m
C$ 761
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Thu 20/8
10:45 a.m.-9:15 p.m.
1 stop13h 30m
Seattle/Tacoma Intl
Sun 23/8
5:00 a.m.-9:32 p.m.
1 stop13h 32m
C$ 764
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Wed 16/9
4:55 p.m.-7:13 p.m.
Nonstop5h 18m
Seattle/Tacoma Intl
Wed 23/9
8:40 a.m.-10:59 p.m.
1 stop11h 19m
C$ 886
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Sun 9/8
10:15 a.m.-4:09 p.m.
1 stop8h 54m
Seattle/Tacoma Intl
Wed 2/9
10:40 a.m.-12:58 a.m.
2 stops11h 18m
C$ 886
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Fri 14/8
6:10 a.m.-9:36 p.m.
1 stop18h 26m
Seattle/Tacoma Intl
Sat 12/9
3:30 p.m.-6:41 a.m.
1 stop12h 11m
C$ 924
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Sat 15/8
5:50 p.m.-10:05 p.m.
1 stop7h 15m
Seattle/Tacoma Intl
Wed 19/8
11:18 a.m.-11:03 p.m.
1 stop8h 45m
C$ 959
Flights are sorted by cheapest round-trip flights first.
Deals found on 1/8
Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3
Best time to book a flight from Niagara Falls to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Niagara Falls with our price prediction graph.
YYZ-SEA
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 Niagara Falls to Seattle
NI4-SEA
YYZ-SEA
What is the cheapest time of day to fly from NI4 to SEA?
Find hourly flight availability from Niagara Falls to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 6 August 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Niagara Falls to Seattle as you normally would.
How much does it cost to fly round-trip from Niagara Falls to Seattle?
Airfare is below average for this route at the moment.
Niagara Falls to Seattle flights typically cost between C$ 490 and C$ 889 in September.The cheapest round-trip price found within the last 5 days was C$ 479 on WestJet (16 Sep-30 Sep).
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 6 August 2026.
See what other customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Niagara Falls to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Related info for your journey
Find useful and relevant information for your journey from Niagara Falls to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly into for flights to Seattle from Niagara Falls?
Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly into when you book flights from Niagara Falls to Seattle. 5 airlines have flights to Seattle/Tacoma Intl from Niagara Falls on a regular basis. Booking flights from Niagara Falls to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 2 inbound flights from Niagara Falls per day.
How long is the flight from Niagara Falls to Seattle?
Delta and United Airlines can get you from Niagara Falls to Seattle in just under 9h 25m. Your travel time can differ by up to 6h 10m. There are 3306 km between Niagara Falls and Seattle. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines to fly from Niagara Falls to Seattle one-way?
The cheapest airlines for a one-way flight from Niagara Falls to Seattle are Alaska Airlines (C$ 172), WestJet (C$ 193), and Air Canada (C$ 231).
What are the most reliable airlines from Niagara Falls to Seattle?
Before booking your flight to Seattle from Niagara Falls, check out the most reliable airlines to get you to your destination on time: Alaska Airlines (90%), Qatar Airways (67%), Air Canada( 53%).
What are the cheapest flights from Niagara Falls to Seattle?
While on average a flight from Niagara Falls to Seattle is generally C$ 697, our data shows the cheapest flight currently is C$ 306. When looking at the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl), you can expect to pay C$ 525 for that flight.
Can I find deals for business class flights from Niagara Falls to Seattle?
Yes. Cheapflights offers flight deals from Niagara Falls to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 6 August 2026.
Top 5 airlines flying from Niagara Falls to Seattle
Discover the top 5 airlines that operate flights from Niagara Falls to Seattle. 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 629,999 searches. Data last updated 6 August 2026.
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Niagara Falls to Seattle?
When you search for this flight from Niagara Falls to Seattle, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Niagara Falls to Seattle?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Niagara Falls to Seattle.
Can Cheapflights find flights from Niagara Falls to Seattle with no change fees?
Certainly. Search results for flights to Seattle from Niagara Falls shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from Niagara Falls to Seattle become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
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