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Cheap flights from Niagara Falls to St. Louis from C$ 213

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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
29 Apr — 6 May1
1 adult

Cheapflights Tip: The best prices from Niagara Falls to Lambert-St Louis are usually found in May or August, booked 90 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 24 April 2025.

Round-trip from

C$ 510

One-way from

C$ 213

Popular in

December

Cheapest in

May

Average price

C$ 630
12/5-16/5
  • 12/5-16/5
  • 3 total stops
  • 19h 24m total
  • Niagara Falls to St. Louis
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7/5
  • 7/5
  • 1 total stop
  • 9h 06m total
  • Niagara Falls to St. Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 24 April 2025.

Mon 12/54:00 p.m.YYZ - STL
1 stop9h 06mMultiple Airlines
Fri 16/59:50 a.m.STL - YYZ
2 stops10h 18mMultiple Airlines
Deal found 23/4C$ 510
Thu 22/511:30 a.m.YYZ - STL
Nonstop2h 06mAir Canada
Tue 27/53:35 p.m.STL - YYZ
1 stop4h 09mAir Canada
Deal found 23/4C$ 511
Thu 22/511:30 a.m.YYZ - STL
1 stop7h 31mDelta
Sun 25/56:00 a.m.STL - YYZ
1 stop4h 40mDelta
Deal found 23/4C$ 518
Sat 7/64:30 p.m.YYZ - STL
2 stops7h 15mUnited Airlines
Sat 14/69:50 a.m.STL - YYZ
1 stop4h 56mUnited Airlines
Deal found 23/4C$ 569
Tue 13/510:35 a.m.YYZ - STL
1 stop9h 40mAmerican Airlines
Mon 19/56:00 a.m.STL - YYZ
1 stop7h 30mAmerican Airlines
Deal found 23/4C$ 589
Tue 3/612:00 p.m.YYZ - STL
2 stops12h 26mWestJet
Tue 10/66:40 a.m.STL - YYZ
1 stop3h 40mWestJet
Deal found 23/4C$ 662
Thu 29/54:45 p.m.YYZ - STL
2 stops23h 42mAlaska Airlines
Tue 3/65:00 a.m.STL - YYZ
2 stops33h 00mAlaska Airlines
Deal found 23/4C$ 1,061
Wed 23/47:20 a.m.YYZ - STL
1 stop14h 27mWestJet Encore
Fri 25/412:03 p.m.STL - YYZ
1 stop9h 57mWestJet Encore
Deal found 22/4C$ 1,065

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 24 April 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

Tue 13/5

3:10 p.m.-9:52 p.m.

1 stop7h 42m

Lambert-St Louis

Fri 16/5

5:00 a.m.-10:51 a.m.

1 stop4h 51m

C$ 507

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 22/5

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

Nonstop2h 06m

Lambert-St Louis

Sun 25/5

8:10 a.m.-1:42 p.m.

1 stop4h 32m

C$ 511

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 19/5

4:00 p.m.-12:06 a.m.

1 stop9h 06m

Lambert-St Louis

Fri 23/5

3:30 p.m.-5:33 p.m.

2 stops25h 03m

C$ 514

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 22/5

11:30 a.m.-6:01 p.m.

1 stop7h 31m

Lambert-St Louis

Sun 25/5

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

1 stop4h 40m

C$ 518

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 6/6

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

Nonstop2h 06m

Lambert-St Louis

Fri 13/6

7:30 a.m.-10:25 a.m.

Nonstop1h 55m

C$ 562

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 21/5

8:00 a.m.-5:00 p.m.

2 stops10h 00m

Lambert-St Louis

Tue 27/5

6:00 a.m.-6:04 p.m.

2 stops11h 04m

C$ 643

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 6/6

4:45 p.m.-8:08 a.m.

2 stops16h 23m

Lambert-St Louis

Fri 13/6

5:29 p.m.-3:00 p.m.

2 stops20h 31m

C$ 1,076

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 7/5

4:00 p.m.-12:06 a.m.

1 stop9h 06m

C$ 213

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 15/5

3:10 p.m.-9:52 p.m.

1 stop7h 42m

C$ 260

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 7/6

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

Nonstop2h 06m

C$ 266

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/4

Showing 1-10 of 13 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 18 April 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 84 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 24 April 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.

Weekly flight availability from Niagara Falls to St. Louis

Explore weekly flight availability from Niagara Falls to St. Louis. 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 24 April 2025.

The most flights from NI4 to STL are scheduled on a Monday (2 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 on average).

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 24 April 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
9,918 reviews
Check prices

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,918 reviews
Alaska Airlines
8.0
Very good
9,918 reviews
Check prices

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,918 reviews
Check prices

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,685 reviews
Alaska Airlines
8.0
Very good
9,918 reviews
Check prices

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,918 reviews
Check prices

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
WestJet
7.2
Good
2,816 reviews
Alaska Airlines
8.0
Very good
9,918 reviews
Check prices

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 1 inbound flight 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 American Airlines, with whom users have recently found tickets for as low as C$ 260. However, be on the lookout for offers from Air Canada 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$ 586 for a flight from Niagara Falls to St. Louis. The cheapest flight overall is C$ 332 while the most popular route, (Toronto Pearson Intl - Lambert-St Louis) is currently priced at C$ 414.

  • 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
Chesterfield
St. Peters

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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 24 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 512AverageC$ 690FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 566AverageC$ 682FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 611AverageC$ 755FlexibilityNo 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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