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Cheap flights from Niagara Falls to St. Louis from C$ 216

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 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
5 Apr — 12 Apr1
1 adult

Cheapflights Tip: The best prices from Niagara Falls to Lambert-St Louis are usually found in May or August, booked 75 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

Cheap flight deals from Niagara Falls to St. Louis

Keep the following information in mind while searching for Niagara Falls to St. Louis flight deals. Data was last updated 31 March 2025.

Round-trip from

C$ 540

One-way from

C$ 216

Popular in

December

Cheapest in

May

Average price

C$ 714
9/4-11/4
  • 9/4-11/4
  • 2 total stops
  • 30h 04m total
  • Niagara Falls to St. Louis
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29/4
  • 29/4
  • 1 total stop
  • 8h 25m total
  • Niagara Falls to St. Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 81 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
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Find flight deals from Niagara Falls to St. Louis

Cheapest flights from Niagara Falls to St. Louis
Explore the most affordable flight options available from Niagara Falls to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 March 2025.

Thu 1/56:30 p.m.YYZ - STL
Nonstop2h 13mAir Canada
Wed 7/52:30 p.m.STL - YYZ
Nonstop2h 00mAir Canada
Deal found 30/3C$ 542
Thu 10/47:25 p.m.YYZ - STL
1 stop23h 18mMultiple Airlines
Sun 13/44:57 p.m.STL - YYZ
1 stop19h 58mMultiple Airlines
Deal found 31/3C$ 551
Wed 30/410:20 a.m.YYZ - STL
1 stop5h 26mWestJet
Wed 7/512:30 p.m.STL - YYZ
1 stop7h 14mWestJet
Deal found 30/3C$ 558
Thu 15/511:30 a.m.YYZ - STL
Nonstop2h 06mUnited Airlines
Thu 22/55:00 a.m.STL - YYZ
1 stop8h 38mUnited Airlines
Deal found 30/3C$ 608
Fri 25/49:45 a.m.YYZ - STL
1 stop4h 16mDelta
Sun 18/56:00 a.m.STL - YYZ
1 stop4h 40mDelta
Deal found 29/3C$ 615
Fri 9/54:45 p.m.YYZ - STL
2 stops30h 07mAlaska Airlines
Tue 13/56:52 a.m.STL - YYZ
2 stops31h 08mAlaska Airlines
Deal found 30/3C$ 1,062

Cheapflights Fare Finder

Customize your flight search to find flights from Niagara Falls to St. Louis 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 629,999 searches. Data last updated 31 March 2025.
Use the filters below to find and compare flights from Niagara Falls to St. Louis that are best for you.

Fly from

Niagara Falls

Fly to

St. Louis

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 1/5

6:30 p.m.-7:43 p.m.

Nonstop2h 13m

Lambert-St Louis

Wed 7/5

2:30 p.m.-5:30 p.m.

Nonstop2h 00m

C$ 542

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 10/4

7:25 p.m.-5:43 p.m.

1 stop23h 18m

Lambert-St Louis

Sun 13/4

4:57 p.m.-1:55 p.m.

1 stop19h 58m

C$ 551

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 30/4

10:20 a.m.-2:46 p.m.

1 stop5h 26m

Lambert-St Louis

Wed 7/5

12:30 p.m.-8:44 p.m.

1 stop7h 14m

C$ 558

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 15/5

11:30 a.m.-12:36 p.m.

Nonstop2h 06m

Lambert-St Louis

Thu 22/5

5:00 a.m.-2:38 p.m.

1 stop8h 38m

C$ 608

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 25/4

9:45 a.m.-1:01 p.m.

1 stop4h 16m

Lambert-St Louis

Sun 18/5

6:00 a.m.-11:40 a.m.

1 stop4h 40m

C$ 615

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 9/5

4:45 p.m.-9:52 p.m.

2 stops30h 07m

Lambert-St Louis

Tue 13/5

6:52 a.m.-3:00 p.m.

2 stops31h 08m

C$ 1,062

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 29/4

9:50 a.m.-5:15 p.m.

1 stop8h 25m

C$ 216

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sun 4/5

3:00 p.m.-7:58 p.m.

1 stop5h 58m

C$ 315

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 15/7

7:30 a.m.-3:47 p.m.

2 stops9h 17m

C$ 325

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 31/5

12:00 p.m.-11:26 p.m.

2 stops12h 26m

C$ 365

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/3

Showing 1-10 of 11 results
1
2

Best time to book a flight from Niagara Falls to St. Louis

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

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

Use this chart to determine the optimal time to book a round-trip flight from Niagara Falls to St. Louis. Price data was last updated on 28 March 2025.

The price you pay for your flight from Niagara Falls to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Niagara Falls to St. Louis (average of C$ 365). Flying from Niagara Falls to St. Louis in September is currently the most expensive (average of C$ 491). 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 NI4 to STL?

Find hourly flight availability from Niagara Falls to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 31 March 2025.

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

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated 31 March 2025.
To help decide which airline to fly from Niagara Falls to St. Louis, see what other customers have to say about Alaska Airlines, Delta and United Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,818 reviews
Check prices

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews
Check prices

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews
Check prices

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,614 reviews
Alaska Airlines
8.0
Very good
9,818 reviews
Check prices

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,818 reviews
Check prices

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
WestJet
7.2
Good
2,789 reviews
Alaska Airlines
8.0
Very good
9,818 reviews
Check prices

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

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

    For a flight from Niagara Falls to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 20.4 km from the centre of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 inbound flights from Niagara Falls per day. 3 airlines have flights to Lambert-St Louis from Niagara Falls on a regular basis.

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

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as C$ 315. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Niagara Falls to St. Louis for a low price.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Niagara Falls to St. Louis on time: Air Canada (79%), Jazz (79%), United Airlines (79%).

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

    On average you can expect to pay C$ 680 for a flight from Niagara Falls to St. Louis. The cheapest flight overall is C$ 502 while the most popular route, (Toronto Pearson Intl - Lambert-St Louis) is currently priced at C$ 419.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Niagara Falls to St. Louis (average of C$ 365). Flying from Niagara Falls to St. Louis in September is currently the most expensive (average of C$ 491). 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.

See more FAQs

Travelling to a place near Niagara Falls?

Book flights to Niagara Falls if you plan to visit one of these locations
St. Peters
Chesterfield

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Top 3 airlines flying from Niagara Falls to St. Louis

Discover the top 3 airlines that operate flights from Niagara Falls to St. Louis. 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 629,999 searches. Data last updated 31 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 529AverageC$ 719FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 599AverageC$ 706FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 631AverageC$ 781FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Niagara Falls to St. Louis?

Deals for Niagara Falls to St. Louis flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Niagara Falls to St. Louis?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Niagara Falls to St. Louis for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Niagara Falls to St. Louis with no change fees?

Certainly. Search results for flights to St. Louis from Niagara Falls shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Niagara Falls to St. Louis become cheaper?

Of course! You can now track prices for flights from Niagara Falls to St. Louis and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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