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Niagara Falls

$146+ Cheap flights from Seattle (SEA) to Niagara Falls, 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Niagara Falls are usually found in January or March, booked 70 days in advance, depart on a Thursday or Monday and return on a Wednesday

Cheap 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 April 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$296
(Mytrip)

One-way from

$146
(Flightnetwork)

Popular in

April

Cheapest in

January

Average price

$511
Provider with most accurate pricing for Seattle/Tacoma Intl-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Toronto (YTO) flights.
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From Seattle/Tacoma Intl to Niagara Falls
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One-way flight from Seattle/Tacoma Intl to Niagara Falls
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Seattle to Niagara Falls

Cheapest flights from Seattle to Niagara Falls
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 April 30, 2025.

This Mytrip deal was found by Cheapflights users on 4/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/33:20 pmSEA - YYZ
3 stops30h 13mMultiple Airlines
Tue 6/242:00 pmYYZ - SEA
1 stop9h 41mMultiple Airlines
Deal found 4/29$296
This Flightnetwork deal was found by Cheapflights users on 4/29. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/42:55 pmSEA - YYZ
1 stop7h 14mAir Canada
Tue 6/108:30 amYYZ - SEA
Nonstop5h 21mAir Canada
Deal found 4/29$303
This Alaska Airlines deal was found by Cheapflights users on 4/28. 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 5/287:23 amSEA - YYZ
Nonstop4h 37mAlaska Airlines
Tue 6/34:45 pmYYZ - SEA
Nonstop5h 19mAlaska Airlines
Deal found 4/28$307
This Delta deal was found by Cheapflights users on 4/29. 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 6/176:00 amSEA - YYZ
1 stop9h 34mDelta
Wed 6/256:30 amYYZ - SEA
1 stop7h 15mDelta
Deal found 4/29$321
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 6/131:15 pmSEA - YYZ
1 stop8h 18mWestJet
Tue 7/19:00 amYYZ - SEA
2 stops12h 38mWestJet
Deal found 4/29$356
This United Airlines deal was found by Cheapflights users on 4/29. 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 5/2411:50 pmSEA - YYZ
1 stop7h 08mUnited Airlines
Sun 5/2512:45 pmYYZ - SEA
1 stop10h 56mUnited Airlines
Deal found 4/29$373
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/21:10 amSEA - YYZ
1 stop8h 20mAmerican Airlines
Tue 6/241:20 pmYYZ - SEA
1 stop9h 43mAmerican Airlines
Deal found 4/29$382

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 April 30, 2025.
Use the filters below to find and compare flights from Seattle to Niagara Falls that are best for you.

Fly from

Seattle

Fly to

Niagara Falls

Route

Depart

Return

Price

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 6/3

3:20 pm-12:33 am

3 stops30h 13m

Toronto Pearson Intl

Tue 6/24

2:00 pm-8:41 pm

1 stop9h 41m

$296

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 6/4

2:55 pm-1:09 am

1 stop7h 14m

Toronto Pearson Intl

Tue 6/10

8:30 am-10:51 am

Nonstop5h 21m

$303

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 5/28

7:23 am-3:00 pm

Nonstop4h 37m

Toronto Pearson Intl

Tue 6/3

4:45 pm-7:04 pm

Nonstop5h 19m

$307

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 6/17

6:00 am-6:34 pm

1 stop9h 34m

Toronto Pearson Intl

Wed 6/25

6:30 am-10:45 am

1 stop7h 15m

$321

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 6/13

1:15 pm-12:33 am

1 stop8h 18m

Toronto Pearson Intl

Tue 7/1

9:00 am-6:38 pm

2 stops12h 38m

$356

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 5/24

11:50 pm-9:58 am

1 stop7h 08m

Toronto Pearson Intl

Sun 5/25

12:45 pm-8:41 pm

1 stop10h 56m

$373

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 6/2

1:10 am-12:30 pm

1 stop8h 20m

Toronto Pearson Intl

Tue 6/24

1:20 pm-8:03 pm

1 stop9h 43m

$382

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 6/3

5:30 am-5:52 pm

2 stops9h 22m

$146

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 5/20

11:50 pm-11:40 am

1 stop8h 50m

$148

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 10/15

4:58 pm-6:40 am

1 stop10h 42m

$153

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 15 results
1
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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.
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

How far ahead should I book a flight from Seattle to Niagara Falls?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Niagara Falls. Price data was last updated on April 25, 2025.

The best time to book flights from Seattle to Niagara Falls is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Niagara Falls?

Currently, January is the cheapest month in which you can book a flight from Seattle to Niagara Falls (average of $243). Flying from Seattle to Niagara Falls in July is currently the most expensive (average of $359). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 April 30, 2025.

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.

What is the cheapest day to fly from Seattle to Niagara Falls?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Niagara Falls. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Niagara Falls flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 April 30, 2025.

The most flights from SEA to NI4 are scheduled on a Thursday (7 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Niagara Falls by month

Plan your trip to Niagara Falls by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Niagara Falls ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Niagara Falls when rainfall is around 2.0 in.

Temperature in Niagara Falls by month

Plan your trip to Niagara Falls by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Niagara Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 April 30, 2025.
To help decide which airline to fly from Seattle to Niagara Falls, see what other customers have to say about Alaska Airlines, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,961 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,929 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
WestJet
7.2
Good
2,826 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

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.

  • What airport do you fly from for flights from Seattle to Niagara Falls?

    If you book a flight to Niagara Falls from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 5 flights from Seattle/Tacoma Intl to Niagara Falls per day from 5 different airlines.

  • What are the cheapest airlines to fly from Seattle to Niagara Falls one-way?

    $146 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from $148 and $160, respectively.

  • What are the most reliable airlines from Seattle to Niagara Falls?

    Consider Brussels Airlines (100%), Air Tahiti Nui (95%) or Alaska Airlines (90%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Niagara Falls.

  • What are the cheapest flights from Seattle to Niagara Falls?

    While on average a flight from Seattle to Niagara Falls is generally $502, our data shows the cheapest flight currently is $159. When looking at the most popular route, (Seattle/Tacoma Intl - Toronto Pearson Intl), you can expect to pay $260 for that flight.

  • Can I find deals for flights from Seattle to Niagara Falls that include hotel bookings?

    Yes. In addition to deals on Seattle to Niagara Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Niagara Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Niagara Falls.

  • Can I find deals for business class flights from Seattle to Niagara Falls?

    Yes. Cheapflights offers flight deals from Seattle to Niagara Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Niagara Falls?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Niagara Falls (average of $243). Flying from Seattle to Niagara Falls in July is currently the most expensive (average of $359). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Seattle to Niagara Falls

See prices for flight routes from nearby airports that may be better suited for you.
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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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$136Average$497FlexibilityNo cancel feeOn-time67%
WestJetCheapest$145Average$433FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$158Average$394FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$251Average$492FlexibilityNo cancel feeOn-time75%
DeltaCheapest$394Average$513FlexibilityNo cancel feeOn-timeN/A

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