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Niagara Falls

$129+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 Tuesday or Monday and return on a Thursday

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 July 3, 2025.

Round-trip from

$291
(oojo)

One-way from

$129
(Alaska Airlines)

Popular in

June

Cheapest in

January

Average price

$496
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. 11% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This oojo deal was found by Cheapflights users on 7/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/292:05 pmSEA - YYZ
2 stops12h 46mWestJet
Tue 8/56:45 amYYZ - SEA
2 stops14h 53mWestJet
Deal found 7/3$291
This United Airlines deal was found by Cheapflights users on 7/3. 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.
Thu 10/2311:40 pmSEA - YYZ
1 stop9h 09mUnited Airlines
Sun 10/266:30 amYYZ - SEA
1 stop9h 58mUnited Airlines
Deal found 7/3$296
This Air Canada deal was found by Cheapflights users on 7/3. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1410:00 amSEA - YYZ
1 stop8h 50mAir Canada
Sat 8/168:40 amYYZ - SEA
Nonstop5h 20mAir Canada
Deal found 7/3$300
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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.
Thu 7/107:17 amSEA - YYZ
Nonstop4h 43mAlaska Airlines
Wed 7/164:45 pmYYZ - SEA
Nonstop5h 24mAlaska Airlines
Deal found 7/1$307
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 7/185:30 pmSEA - YYZ
1 stop9h 50mMultiple Airlines
Sat 7/269:00 amYYZ - SEA
1 stop10h 16mMultiple Airlines
Deal found 7/1$314

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 July 3, 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 7/29

2:05 pm-5:51 am

2 stops12h 46m

Toronto Pearson Intl

Tue 8/5

6:45 am-6:38 pm

2 stops14h 53m

$291

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 10/23

11:40 pm-11:49 am

1 stop9h 09m

Toronto Pearson Intl

Sun 10/26

6:30 am-1:28 pm

1 stop9h 58m

$296

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 8/14

10:00 am-9:50 pm

1 stop8h 50m

Toronto Pearson Intl

Sat 8/16

8:40 am-11:00 am

Nonstop5h 20m

$300

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 7/14

7:17 am-3:00 pm

Nonstop4h 43m

Toronto Pearson Intl

Fri 7/18

4:45 pm-7:09 pm

Nonstop5h 24m

$308

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 7/14

5:30 pm-6:12 am

2 stops33h 42m

Toronto Pearson Intl

Fri 7/18

1:30 pm-8:28 pm

1 stop9h 58m

$309

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 7/10

7:17 am-3:00 pm

Nonstop4h 43m

$129

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 8/2

7:05 am-12:33 am

2 stops14h 28m

$130

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 8/4

11:45 pm-11:49 am

1 stop9h 04m

$132

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 7/30

2:55 pm-5:34 am

2 stops11h 39m

$133

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 8/11

9:18 pm-5:51 am

3 stops29h 33m

$151

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 12 results
1
2

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 June 27, 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 August is currently the most expensive (average of $348). 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 July 3, 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. Saturday 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 July 3, 2025.

The most flights from SEA to NI4 are scheduled on a Tuesday (8 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (2 on average).

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 July 3, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and United Airlines from Seattle to Niagara Falls to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
WestJet
7.2
Good
2,917 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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 6 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?

    $129 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on WestJet and United Airlines, with prices starting from $130 and $132, respectively.

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

    Consider Qatar Airways (97%), Alaska Airlines (93%) or Hawaiian Airlines (93%) 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 $1,355, our data shows the cheapest flight currently is $117. When looking at the most popular route, (Seattle/Tacoma Intl - Toronto Pearson Intl), you can expect to pay $238 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 August is currently the most expensive (average of $348). 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

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$135Average$492FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$158Average$414FlexibilityNo cancel feeOn-time69%
DeltaCheapest$182Average$464FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$237Average$326FlexibilityNo cancel feeOn-time60%
Alaska AirlinesCheapest$281Average$487FlexibilityNo cancel feeOn-time75%

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