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Niagara Falls

$148+ 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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
May 17 — May 241
Sat 5/17
Sat 5/24
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 82 days in advance, depart on a Wednesday or Thursday 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 May 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

CheapTicketsDeal
3 stars

Round-trip from

$280
(Mytrip)

One-way from

$148
(Delta)

Popular in

August

Cheapest in

January

Average price

$393
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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Highest demand for flights based on searches. 10% potential increase in price ($48 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 12, 2025.

This Mytrip deal was found by Cheapflights users on 5/10. 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 6/311:35 amSEA - YYZ
Nonstop4h 57mAir Canada
Tue 6/108:30 amYYZ - SEA
Nonstop5h 21mAir Canada
Deal found 5/10$280
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 6/53:20 pmSEA - YYZ
1 stop12h 00mMultiple Airlines
Sun 6/88:05 pmYYZ - SEA
1 stop21h 05mMultiple Airlines
Deal found 5/11$296
This Alaska Airlines deal was found by Cheapflights users on 5/10. 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.
Tue 9/237:16 amSEA - YYZ
Nonstop4h 44mAlaska Airlines
Fri 10/104:45 pmYYZ - SEA
Nonstop5h 19mAlaska Airlines
Deal found 5/10$318
This Delta deal was found by Cheapflights users on 5/10. 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.
Mon 9/2212:40 amSEA - YYZ
1 stop7h 49mDelta
Tue 10/76:08 pmYYZ - SEA
1 stop7h 17mDelta
Deal found 5/10$332
This United Airlines deal was found by Cheapflights users on 5/11. 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 6/48:00 amSEA - YYZ
2 stops11h 23mUnited Airlines
Wed 6/115:15 pmYYZ - SEA
1 stop8h 27mUnited Airlines
Deal found 5/11$337
This Kiwi.com deal was found by Cheapflights users on 5/10. 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 9/201:50 pmSEA - YYZ
1 stop7h 32mWestJet
Thu 10/98:00 amYYZ - SEA
1 stop7h 59mWestJet
Deal found 5/10$340
This American Airlines deal was found by Cheapflights users on 5/12. 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 6/101:20 pmYYZ - SEA
1 stop9h 43mAmerican Airlines
Deal found 5/12$341
This Sun Country Air deal was found by Cheapflights users on 5/12. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/186:24 pmSEA - YYZ
1 stop19h 16mSun Country Air
Thu 6/2611:40 amYYZ - SEA
1 stop14h 10mSun Country Air
Deal found 5/12$446

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 May 12, 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

11:35 am-7:32 pm

Nonstop4h 57m

Toronto Pearson Intl

Tue 6/10

8:30 am-10:51 am

Nonstop5h 21m

$280

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 6/5

3:20 pm-6:20 am

1 stop12h 00m

Toronto Pearson Intl

Sun 6/8

8:05 pm-2:10 pm

1 stop21h 05m

$296

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 9/23

7:16 am-3:00 pm

Nonstop4h 44m

Toronto Pearson Intl

Fri 10/10

4:45 pm-7:04 pm

Nonstop5h 19m

$318

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 9/22

12:40 am-11:29 am

1 stop7h 49m

Toronto Pearson Intl

Tue 10/7

6:08 pm-10:25 pm

1 stop7h 17m

$332

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 6/4

8:00 am-10:23 pm

2 stops11h 23m

Toronto Pearson Intl

Wed 6/11

5:15 pm-10:42 pm

1 stop8h 27m

$337

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 9/20

1:50 pm-12:22 am

1 stop7h 32m

Toronto Pearson Intl

Thu 10/9

8:00 am-12:59 pm

1 stop7h 59m

$340

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 6/2

1:10 am-12:30 pm

1 stop8h 20m

Toronto Pearson Intl

Tue 6/10

1:20 pm-8:03 pm

1 stop9h 43m

$341

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 6/18

6:24 pm-4:40 pm

1 stop19h 16m

Toronto Pearson Intl

Thu 6/26

11:40 am-10:50 pm

1 stop14h 10m

$446

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 6/14

9:05 am-11:23 pm

1 stop11h 18m

$148

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 6/1

1:10 am-12:30 pm

1 stop8h 20m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 17 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 May 9, 2025.

The best time to book flights from Seattle to Niagara Falls is 82 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 May 12, 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 evenings 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 May 12, 2025.

The most flights from SEA to NI4 are scheduled on a Wednesday (7 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (2 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 May 12, 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
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

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
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

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
8,724 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

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
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

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
2,837 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

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 4 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?

    $148 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on American Airlines and Air Canada, with prices starting from $149 and $150, respectively.

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

    Consider Brussels Airlines (100%), United Airlines (98%) or Air Tahiti Nui (98%) 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 $831, 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 $286 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 May 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$136Average$491FlexibilityNo cancel feeOn-time67%
WestJetCheapest$145Average$422FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$158Average$393FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$253Average$494FlexibilityNo cancel feeOn-time75%
DeltaCheapest$394Average$464FlexibilityNo cancel feeOn-timeN/A

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