Weekly flight availability from St. Louis to Niagara Falls

The most flights from STL to NI4 are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

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.

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).

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

Looking at all options, your cheapest flight can be booked for $242. While the most popular route (Lambert-St Louis - Toronto Pearson Intl) can be booked for $358 on average, our data indicates $1,747 when flying from St. Louis to Niagara Falls.

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 Air Canada (70%), Jazz (70%) and United Airlines (68%).

What are the most popular airlines that fly from St. Louis to Niagara Falls?

Consider Air Canada, United Airlines or American Airlines when booking your flight. These represent the most popular airlines when flying from St. Louis to Niagara Falls.

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 4 flights from Lambert-St Louis to Niagara Falls per day from 4 different airlines.

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.

Find Cheap Flights from St. Louis to Niagara Falls

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Find flight deals from St. Louis to Niagara Falls

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	January
Cheapest in	December
Average price	$668

Provider with most accurate pricing for Lambert-St Louis-Toronto (YTO) flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Toronto (YTO) flights.

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Highest demand for flights based on searches. 2% potential increase in price ($15 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($28 potential savings vs. average RT price).

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Average for round-trip flights in September 2026

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Everything you need to know about your flight from St. Louis to Niagara Falls

Prices

Airlines

What is the cheapest time of day to fly from STL to NI4?

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.

Reviews of airlines servicing Niagara Falls

Read reviews from past customers who have flown Delta,United Airlines, andAir Canada from St. Louis to Niagara Falls. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.8

Good

8,605 reviews

Reviews

1 / 20

4.0

Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay

Delta

7.8

Good

8,605 reviews

Delta

7.8

Good

8,605 reviews

Reviews

1 / 20

4.0

Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay

United Airlines

7.4

Good

10,246 reviews

Delta

7.8

Good

8,605 reviews

Reviews

1 / 20

4.0

Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay

Air Canada

7.1

Good

11,696 reviews

Delta

7.8

Good

8,605 reviews

Reviews

1 / 20

4.0

Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay

American Airlines

7.0

Good

12,099 reviews

Delta

7.8

Good

8,605 reviews

Reviews

1 / 20

4.0

Okay

Jennifer,Sep 2026

ORD - LGA

The flight crew was 30 minutes late to an am flight and then that caused a delay

Related info for your journey

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 4 flights from Lambert-St Louis to Niagara Falls per day from 4 different airlines.
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 Air Canada (70%), Jazz (70%) and United Airlines (68%).
What are the cheapest flights from St. Louis to Niagara Falls?
Looking at all options, your cheapest flight can be booked for $242. While the most popular route (Lambert-St Louis - Toronto Pearson Intl) can be booked for $358 on average, our data indicates $1,747 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.

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Alternative routes for St. Louis to Niagara Falls

St. Louis to Pearson Intl flights

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Columbia to Pearson Intl flights

Columbia to Pierre Elliott Trudeau Intl flights

Top 4 airlines flying from St. Louis to Niagara Falls

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$246	Average$623	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$253	Average$632	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$270	Average$544	FlexibilityNo cancel fee	On-time71%
Air Canada	Cheapest$272	Average$604	FlexibilityNo cancel fee	On-time67%

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Cheap flights from St. Louis (STL) to Niagara Falls, Canada

Find cheap flights from St. Louis to Niagara Falls with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Find flight deals from St. Louis to Niagara Falls

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Cheapflights Insights

What is the cheapest time of day to fly from STL to NI4?

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

The most flights from STL to NI4 are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

Reviews of airlines servicing Niagara Falls

Read reviews from past customers who have flown Delta,United Airlines, andAir Canada from St. Louis to Niagara Falls. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from St. Louis to Niagara Falls?

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Niagara Falls

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Niagara Falls by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from St. Louis to Niagara Falls by cabin class

Find flights from St. Louis to Niagara Falls, based on your preferred cabin class, be it economy, premium economy, business, or first class.

St. Louis and Niagara Falls flights

Browse other St. Louis and Niagara Falls flight options. Last updated on September 27, 2026.

Other flights from St. Louis

Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on September 27, 2026.

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Top 4 airlines flying from St. Louis to Niagara Falls

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