Cheapflights Tip: The best prices from Niagara Falls to Seattle/Tacoma Intl are usually found in February or January, booked 72 days in advance, depart on a Friday or Tuesday and return on a Thursday
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 8 November 2026.
Popular in
December
Cheapest in
February
Average price
C$ 575
Highest demand for flights based on searches. 0% potential increase in price (C$ 4 potential increase over avg. RT price).
Everything you need to know about your flight from Niagara Falls to Seattle
Prices
Airlines
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 8 November 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 8 November 2026.
The most flights from NI4 to SEA are scheduled on a Saturday (5 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 on average).
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 8 November 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.
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$ 173), WestJet (C$ 199), and Air Canada (C$ 240).
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: Qatar Airways (100%), Alaska Airlines (87%), Air Canada( 63%).
What are the cheapest flights from Niagara Falls to Seattle?
While on average a flight from Niagara Falls to Seattle is generally C$ 777, our data shows the cheapest flight currently is C$ 332. When looking at the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl), you can expect to pay C$ 535 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 8 November 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 8 November 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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