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Niagara Falls

$141+ Cheap flights from St. Louis (STL) 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYZ
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Niagara Falls are usually found in January or October, booked 50 days in advance, depart on a Thursday or Tuesday and return on a Saturday

Cheap flight deals from St. Louis to Niagara Falls

Keep the following information in mind while searching for St. Louis to Niagara Falls flight deals. Data was last updated June 12, 2025.

Round-trip from

$302
(Mytrip)

One-way from

$141
(American Airlines)

Popular in

November

Cheapest in

January

Average price

$488
From Lambert-St Louis to Niagara Falls
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One-way flight from Lambert-St Louis to Niagara Falls
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Highest demand for flights based on searches. 2% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from St. Louis to Niagara Falls

Cheapest flights from St. Louis to Niagara Falls
Explore the most affordable flight options available from St. Louis to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/10. 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.
Wed 7/911:24 amSTL - YYZ
2 stops25h 41mMultiple Airlines
Tue 7/156:30 amYYZ - STL
1 stop11h 01mMultiple Airlines
Deal found 6/10$302
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/155:55 amSTL - YYZ
1 stop10h 54mAmerican Airlines
Wed 9/1711:44 amYYZ - STL
1 stop11h 09mAmerican Airlines
Deal found 6/11$337
This Sun Country Air deal was found by Cheapflights users on 6/9. 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.
Sun 6/296:12 amSTL - YYZ
1 stop9h 38mSun Country Air
Thu 7/311:40 amYYZ - STL
1 stop24h 50mSun Country Air
Deal found 6/9$362
This Air Canada deal was found by Cheapflights users on 6/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/227:30 amSTL - YYZ
Nonstop1h 55mAir Canada
Thu 6/2611:30 amYYZ - STL
Nonstop2h 06mAir Canada
Deal found 6/10$372
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/205:20 amSTL - YYZ
1 stop8h 51mUnited Airlines
Fri 6/205:15 pmYYZ - STL
1 stop6h 30mUnited Airlines
Deal found 6/10$373
This Delta deal was found by Cheapflights users on 6/10. 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.
Fri 6/206:40 amSTL - YYZ
1 stop7h 01mDelta
Sat 6/213:31 pmYYZ - STL
1 stop5h 59mDelta
Deal found 6/10$397

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis 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 June 12, 2025.
Use the filters below to find and compare flights from St. Louis to Niagara Falls that are best for you.

Fly from

St. Louis

Fly to

Niagara Falls

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 7/9

11:24 am-2:05 pm

2 stops25h 41m

Toronto Pearson Intl

Tue 7/15

6:30 am-4:31 pm

1 stop11h 01m

$302

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 9/15

5:55 am-5:49 pm

1 stop10h 54m

Toronto Pearson Intl

Wed 9/17

11:44 am-9:53 pm

1 stop11h 09m

$337

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 6/29

6:12 am-4:50 pm

1 stop9h 38m

Toronto Pearson Intl

Thu 7/3

11:40 am-11:30 am

1 stop24h 50m

$362

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 6/22

7:30 am-10:25 am

Nonstop1h 55m

Toronto Pearson Intl

Thu 6/26

11:30 am-12:36 pm

Nonstop2h 06m

$372

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 9/25

12:25 pm-9:02 pm

1 stop7h 37m

Toronto Pearson Intl

Sun 9/28

2:10 pm-2:27 pm

1 stop25h 17m

$394

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 6/27

6:40 am-2:41 pm

1 stop7h 01m

Toronto Pearson Intl

Wed 7/23

11:29 am-4:18 pm

1 stop5h 49m

$498

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 9/25

5:55 am-5:49 pm

1 stop10h 54m

$141

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 7/24

10:47 am-9:23 pm

2 stops33h 36m

$148

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 7/6

6:36 am-4:50 pm

1 stop9h 14m

$153

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 6/30

7:30 am-10:25 am

Nonstop1h 55m

$161

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 11 results
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Best time to book a flight from St. Louis to Niagara Falls

Have a flexible travel schedule? Discover the best time to fly to Niagara Falls from St. Louis 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 St. Louis to Niagara Falls

How far ahead should I book a flight from St. Louis to Niagara Falls?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Niagara Falls. Price data was last updated on June 9, 2025.

Booking 50 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Niagara Falls. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from St. Louis to Niagara Falls?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Niagara Falls (average of $243). Flying from St. Louis to Niagara Falls in July is currently the most expensive (average of $353). 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 STL to NI4?

Find hourly flight availability from St. Louis 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 June 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Niagara Falls as you normally would.

Weekly flight availability from St. Louis to Niagara Falls

Explore weekly flight availability from St. Louis 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 June 12, 2025.

The most flights from STL to NI4 are scheduled on a Wednesday (4 on average). You will have fewer flight options on Sunday, 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 June 12, 2025.
To help decide which airline to fly from St. Louis to Niagara Falls, see what other customers have to say about Delta, United Airlines and American Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,531 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Sun Country Air
6.9
Okay
345 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from St. Louis 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 St. Louis to Niagara Falls?

    If you book a flight to Niagara Falls from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 3 flights from Lambert-St Louis to Niagara Falls per day from 3 different airlines.

  • What are the cheapest airlines to fly from St. Louis to Niagara Falls one-way?

    One-way options have recently been found by users for as low as $141 on American Airlines. Other airlines that offer cheap prices include Sun Country Air from $153 and Air Canada from $205 one-way.

  • What are the most reliable airlines from St. Louis to Niagara Falls?

    The top 3 most reliable airlines when flying from St. Louis to Niagara Falls are United Airlines (73%), Air Canada (50%) and Jazz (37%).

  • What are the cheapest flights from St. Louis to Niagara Falls?

    Looking at all options, your cheapest flight can be booked for $177. While the most popular route (Lambert-St Louis - Toronto Pearson Intl) can be booked for $312 on average our data indicates $2,125 when flying from St. Louis to Niagara Falls.

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

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

  • How can I find direct flights from St. Louis to Niagara Falls?

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

  • Can I find deals for business class flights from St. Louis to Niagara Falls?

    Yes. Cheapflights offers flight deals from St. Louis 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 St. Louis to Niagara Falls?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Niagara Falls (average of $243). Flying from St. Louis to Niagara Falls in July is currently the most expensive (average of $353). 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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Top 3 airlines flying from St. Louis to Niagara Falls

Discover the top 3 airlines that operate flights from St. Louis 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$220Average$504FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$220Average$481FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$304Average$612FlexibilityNo cancel feeOn-time71%

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