Cheap flights from Niagara Falls to Seattle from C$ 315
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SEA
22 Oct — 29 Oct1
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 22 September 2026.
Thu 22/101:30 p.m. -
1 stop8h 15m
Fri 23/107:35 p.m. -
1 stop8h 20m
Deal found 20/9C$ 488
Wed 21/101:30 p.m. -
1 stop8h 15m
Fri 23/1010:30 a.m. -
1 stop7h 45m
Deal found 21/9C$ 489
Wed 21/1012:40 p.m. -
2 stops9h 05m
Wed 28/103:30 p.m. -
2 stops12h 15m
Deal found 19/9C$ 493
Thu 26/117:30 a.m. -
1 stop9h 10m
Sun 29/112:30 p.m. -
1 stop11h 30m
Deal found 21/9C$ 496
Sat 17/1012:40 p.m. -
2 stops9h 05m
Tue 20/107:35 p.m. -
1 stop7h 10m
Deal found 17/9C$ 498
Sun 22/1110:45 p.m. -
2 stops17h 55m
Sat 28/112:20 p.m. -
2 stops18h 10m
Deal found 21/9C$ 499
Sat 24/1012:00 p.m. -
1 stop9h 45m
Sat 31/103:20 p.m. -
2 stops12h 25m
Deal found 19/9C$ 500
Fri 13/117:00 a.m. -
2 stops9h 40m
Thu 3/122:30 p.m. -
2 stops12h 15m
Deal found 20/9C$ 507
Wed 14/1012:40 p.m. -
2 stops9h 05m
Wed 21/1010:30 a.m. -
2 stops8h 05m
Deal found 17/9C$ 509
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 22 September 2026.
Tue 10/116:00 a.m. -
1 stop11h 50m
Mon 16/1111:40 p.m. -
1 stop8h 29m
Deal found 21/9C$ 584
Fri 13/115:15 p.m. -
Nonstop5h 30m
Tue 17/118:19 a.m. -
Nonstop4h 46m
Deal found 21/9C$ 715
Sat 24/106:10 a.m. -
1 stop13h 06m
Sat 31/1011:59 p.m. -
1 stop10h 20m
Deal found 21/9C$ 586
Wed 21/106:00 a.m. -
1 stop11h 45m
Tue 27/106:00 a.m. -
1 stop8h 18m
Deal found 19/9C$ 586
Fri 25/125:15 p.m. -
Nonstop5h 58m
Tue 29/128:33 a.m. -
Nonstop4h 32m
Deal found 19/9C$ 715
Sun 6/126:00 a.m. -
1 stop8h 10m
Tue 8/126:00 a.m. -
1 stop7h 19m
Deal found 21/9C$ 607
Wed 25/115:15 p.m. -
Nonstop5h 32m
Mon 30/118:31 a.m. -
Nonstop4h 34m
Deal found 18/9C$ 716
Fri 13/112:20 p.m. -
1 stop7h 17m
Tue 17/1111:15 p.m. -
1 stop11h 15m
Deal found 17/9C$ 608
Fri 13/116:00 a.m. -
1 stop7h 59m
Thu 3/126:00 a.m. -
1 stop7h 19m
Deal found 17/9C$ 629
Mon 26/107:34 p.m. -
1 stop7h 25m
Fri 30/101:42 p.m. -
1 stop6h 33m
Deal found 17/9C$ 629
Sat 31/106:00 a.m. -
2 stops10h 39m
Sat 7/1111:10 p.m. -
1 stop6h 39m
Deal found 21/9C$ 648
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 22 September 2026.
Sat 24/107:20 p.m. -
Nonstop5h 19m
Sat 31/107:45 a.m. -
Nonstop4h 40m
Deal found 19/9C$ 671
Thu 5/116:25 p.m. -
Nonstop5h 34m
Thu 12/117:45 a.m. -
Nonstop4h 40m
Deal found 21/9C$ 673
Sat 17/107:15 p.m. -
Nonstop5h 19m
Sat 24/107:55 a.m. -
Nonstop4h 41m
Deal found 17/9C$ 692
Sat 31/106:25 p.m. -
Nonstop5h 34m
Sat 7/117:45 a.m. -
Nonstop4h 40m
Deal found 21/9C$ 697
Mon 2/115:15 p.m. -
Nonstop5h 30m
Tue 10/118:19 a.m. -
Nonstop4h 46m
Deal found 21/9C$ 701
Last-minute flights from Niagara Falls to Seattle
Discover last-minute flight deals from Niagara Falls to Seattle. Data last updated 22 September 2026 and is based on user searches.
Tue 13/1012:00 p.m. -
1 stop9h 45m
Tue 20/107:35 p.m. -
1 stop8h 20m
Deal found 20/9C$ 510
Tue 13/1012:00 p.m. -
1 stop9h 45m
Mon 19/1010:30 a.m. -
1 stop7h 45m
Deal found 19/9C$ 512
Wed 14/1012:40 p.m. -
2 stops9h 05m
Wed 21/1010:30 a.m. -
2 stops8h 05m
Deal found 17/9C$ 509
Sat 17/1012:40 p.m. -
2 stops9h 05m
Tue 20/107:35 p.m. -
1 stop7h 10m
Deal found 17/9C$ 498
Sat 17/1012:40 p.m. -
2 stops9h 05m
Sat 24/1010:30 a.m. -
1 stop7h 45m
Deal found 17/9C$ 513
Wed 21/101:30 p.m. -
1 stop8h 15m
Fri 23/1010:30 a.m. -
1 stop7h 45m
Deal found 21/9C$ 489
Wed 21/1012:40 p.m. -
2 stops9h 05m
Wed 28/103:30 p.m. -
2 stops12h 15m
Deal found 19/9C$ 493
Thu 22/101:30 p.m. -
1 stop8h 15m
Fri 23/107:35 p.m. -
1 stop8h 20m
Deal found 20/9C$ 488
Sat 24/1012:00 p.m. -
1 stop9h 45m
Sat 31/103:20 p.m. -
2 stops12h 25m
Deal found 19/9C$ 500
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 22 September 2026.
Thu 15/1012:00 p.m. -
1 stop9h 45m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 20/9C$ 315
Wed 3/27:30 a.m. -
1 stop9h 10m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 21/9C$ 317
Thu 22/101:30 p.m. -
1 stop8h 15m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 20/9C$ 318
Sun 18/1012:00 p.m. -
1 stop9h 45m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 20/9C$ 320
Sat 17/106:35 p.m. -
2 stops18h 05m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 17/9C$ 321
Sat 24/101:30 p.m. -
1 stop8h 15m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 17/9C$ 322
Tue 10/117:30 a.m. -
1 stop9h 10m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 21/9C$ 324
Tue 9/22:15 p.m. -
1 stop26h 25m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 19/9C$ 331
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 22 September 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 7,457,451 searches. Data last updated 22 September 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
Wed 11/11
6:15 a.m.-4:43 p.m.
1 stop13h 28m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 335
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Wed 4/11
6:00 a.m.-10:40 a.m.
1 stop7h 40m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 335
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Sat 14/11
6:00 a.m.-11:09 a.m.
1 stop8h 09m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 335
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Sat 6/2
12:15 p.m.-6:38 p.m.
1 stop9h 23m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 338
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Tue 2/2
12:10 p.m.-10:02 p.m.
1 stop12h 52m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 338
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Mon 1/2
12:10 p.m.-7:23 p.m.
1 stop10h 13m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 360
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Fri 15/1
5:15 p.m.-10:05 p.m.
1 stop7h 50m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 387
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Fri 6/11
5:15 p.m.-7:45 p.m.
Nonstop5h 30m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 402
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Sat 24/10
7:00 a.m.-9:15 p.m.
3 stops17h 15m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 402
TorontoSeattle
YYZ Toronto Pearson Intl - SEA Seattle/Tacoma Intl
YYZSEA
Toronto Pearson Intl
Thu 22/10
4:55 p.m.-7:26 p.m.
Nonstop5h 31m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 402
Flights are sorted by cheapest round-trip flights first.
Deals found on 17/9
Showing 1-10 of 23 resultsSorted by cheapest first
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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 22 September 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.
Weekly flight availability from Niagara Falls to Seattle
Explore weekly flight availability from Niagara Falls to Seattle. 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 22 September 2026.
The most flights from NI4 to SEA are scheduled on a Monday (4 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 on average).
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$ 450 and C$ 709 in October.The cheapest round-trip price found within the last 5 days was C$ 447 on WestJet (4 Oct-8 Oct).
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 22 September 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 3 inbound flights from Niagara Falls per day.
How long is the flight from Niagara Falls to Seattle?
Delta can get you from Niagara Falls to Seattle in just under 11h 31m. Your travel time can differ by up to . There are 3306 km between Niagara Falls and Seattle.
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$ 196), and Air Canada (C$ 216).
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 (78%), Brussels Airlines (35%), Air Canada( 33%).
What are the cheapest flights from Niagara Falls to Seattle?
While on average a flight from Niagara Falls to Seattle is generally C$ 748, our data shows the cheapest flight currently is C$ 344. When looking at the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl), you can expect to pay C$ 496 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 22 September 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 7,457,451 searches. Data last updated 22 September 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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