Cheap flights from Niagara Falls to St. Louis from C$ 238
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
8 Oct — 15 Oct1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Niagara Falls to Lambert-St Louis are usually found in January or February, booked 53 days in advance, depart on a Wednesday or Saturday and return on a Wednesday
Cheap flight deals from Niagara Falls to St. Louis
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
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 8 September 2026.
Wed 14/1011:40 a.m. -
1 stop10h 17m
Wed 21/105:00 a.m. -
1 stop8h 33m
Deal found 3/9C$ 430
Thu 22/101:15 p.m. -
1 stop8h 42m
Mon 26/105:00 a.m. -
1 stop8h 33m
Deal found 3/9C$ 445
Thu 1/106:30 a.m. -
1 stop7h 46m
Thu 8/105:00 a.m. -
1 stop8h 33m
Deal found 3/9C$ 448
Thu 29/109:35 a.m. -
1 stop14h 41m
Thu 5/114:26 p.m. -
1 stop20h 14m
Deal found 8/9C$ 453
Wed 7/107:29 a.m. -
1 stop10h 24m
Fri 16/107:29 a.m. -
1 stop9h 15m
Deal found 3/9C$ 455
Thu 29/101:15 p.m. -
1 stop8h 42m
Sat 31/105:00 a.m. -
1 stop8h 33m
Deal found 3/9C$ 456
Mon 19/107:45 a.m. -
1 stop16h 28m
Mon 26/106:35 p.m. -
2 stops52h 20m
Deal found 3/9C$ 499
Sat 17/104:50 p.m. -
1 stop7h 23m
Sat 24/104:30 p.m. -
1 stop20h 40m
Deal found 5/9C$ 521
Mon 19/107:45 a.m. -
1 stop16h 28m
Fri 30/106:44 p.m. -
2 stops17h 56m
Deal found 6/9C$ 538
Fri 16/108:10 a.m. -
2 stops10h 30m
Mon 19/104:30 p.m. -
1 stop23h 10m
Deal found 4/9C$ 539
Tue 15/1211:36 a.m. -
1 stop8h 46m
Thu 31/124:32 p.m. -
1 stop17h 27m
Deal found 3/9C$ 551
Best flights from Niagara Falls to St. Louis
Discover carefully curated flight deals from Niagara Falls to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 8 September 2026.
Tue 6/1010:15 a.m. -
1 stop12h 06m
Wed 7/108:00 a.m. -
1 stop8h 01m
Deal found 7/9C$ 658
Sun 4/1011:00 a.m. -
1 stop4h 17m
Sun 11/108:55 a.m. -
Nonstop1h 54m
Deal found 6/9C$ 715
Thu 29/108:35 a.m. -
1 stop8h 08m
Sat 31/104:05 p.m. -
Nonstop1h 54m
Deal found 6/9C$ 715
Sun 4/1011:00 a.m. -
1 stop4h 17m
Sun 11/107:01 p.m. -
1 stop3h 58m
Deal found 6/9C$ 720
Sat 3/103:00 p.m. -
1 stop7h 37m
Sun 11/1012:10 p.m. -
1 stop6h 43m
Deal found 5/9C$ 719
Sat 3/107:00 a.m. -
1 stop4h 48m
Sat 10/102:56 p.m. -
2 stops7h 58m
Deal found 5/9C$ 720
Thu 22/108:50 a.m. -
1 stop4h 23m
Mon 26/108:30 a.m. -
1 stop7h 17m
Deal found 5/9C$ 720
Mon 19/1011:00 a.m. -
1 stop5h 43m
Fri 30/104:05 p.m. -
Nonstop1h 54m
Deal found 6/9C$ 781
Wed 23/911:00 a.m. -
1 stop4h 15m
Mon 28/99:04 a.m. -
1 stop5h 42m
Deal found 7/9C$ 752
Direct flights from Niagara Falls to St. Louis
Explore direct flight options from Niagara Falls to St. Louis based on user searches, and compare prices and availability for your desired travel dates. Data last updated 8 September 2026.
Thu 15/1012:55 p.m. -
Nonstop2h 05m
Mon 19/102:40 p.m. -
Nonstop1h 54m
Deal found 7/9C$ 639
Thu 1/107:15 p.m. -
Nonstop2h 05m
Mon 5/108:55 a.m. -
Nonstop1h 54m
Deal found 7/9C$ 673
Fri 25/912:55 p.m. -
Nonstop2h 05m
Sun 27/98:55 a.m. -
Nonstop1h 54m
Deal found 7/9C$ 686
Tue 20/107:15 p.m. -
Nonstop2h 05m
Tue 27/104:05 p.m. -
Nonstop1h 54m
Deal found 4/9C$ 687
Wed 14/107:15 p.m. -
Nonstop2h 05m
Mon 19/108:55 a.m. -
Nonstop1h 54m
Deal found 3/9C$ 688
Wed 7/1012:55 p.m. -
Nonstop2h 05m
Fri 9/108:55 a.m. -
Nonstop1h 54m
Deal found 5/9C$ 690
Wed 7/107:15 p.m. -
Nonstop2h 05m
Wed 14/108:55 a.m. -
Nonstop1h 54m
Deal found 6/9C$ 692
Fri 16/1012:55 p.m. -
Nonstop2h 05m
Mon 19/108:55 a.m. -
Nonstop1h 54m
Deal found 3/9C$ 699
Sat 3/1012:55 p.m. -
Nonstop2h 05m
Sat 10/108:55 a.m. -
Nonstop1h 54m
Deal found 5/9C$ 701
Tue 6/107:15 p.m. -
Nonstop2h 05m
Wed 7/108:55 a.m. -
Nonstop1h 54m
Deal found 3/9C$ 704
Last-minute flights from Niagara Falls to St. Louis
Discover last-minute flight deals from Niagara Falls to St. Louis. Data last updated 8 September 2026 and is based on user searches.
Thu 1/106:30 a.m. -
1 stop7h 46m
Thu 8/105:00 a.m. -
1 stop8h 33m
Deal found 3/9C$ 448
Wed 7/107:29 a.m. -
1 stop10h 24m
Fri 16/107:29 a.m. -
1 stop9h 15m
Deal found 3/9C$ 455
Wed 14/1011:40 a.m. -
1 stop10h 17m
Wed 21/105:00 a.m. -
1 stop8h 33m
Deal found 3/9C$ 430
Fri 16/108:10 a.m. -
2 stops10h 30m
Mon 19/104:30 p.m. -
1 stop23h 10m
Deal found 4/9C$ 539
Sat 17/104:50 p.m. -
1 stop7h 23m
Sat 24/104:30 p.m. -
1 stop20h 40m
Deal found 5/9C$ 521
Mon 19/107:45 a.m. -
1 stop16h 28m
Mon 26/106:35 p.m. -
2 stops52h 20m
Deal found 3/9C$ 499
Mon 19/107:45 a.m. -
1 stop16h 28m
Fri 30/106:44 p.m. -
2 stops17h 56m
Deal found 6/9C$ 538
Thu 22/101:15 p.m. -
1 stop8h 42m
Mon 26/105:00 a.m. -
1 stop8h 33m
Deal found 3/9C$ 445
Thu 29/109:35 a.m. -
1 stop14h 41m
Thu 5/114:26 p.m. -
1 stop20h 14m
Deal found 8/9C$ 453
Thu 29/101:15 p.m. -
1 stop8h 42m
Sat 31/105:00 a.m. -
1 stop8h 33m
Deal found 3/9C$ 456
One-way flights from Niagara Falls to St. Louis
Search for one-way flight options from Niagara Falls to St. Louis. Find affordable one-way fares based on user searches. Data last updated 8 September 2026.
Tue 27/109:35 a.m. -
2 stops33h 05m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 4/9C$ 238
Sun 25/109:15 a.m. -
2 stops33h 25m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 3/9C$ 240
Tue 22/99:30 a.m. -
2 stops28h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 3/9C$ 253
Thu 15/107:29 a.m. -
1 stop10h 24m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 3/9C$ 254
Sun 11/107:00 a.m. -
2 stops35h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 7/9C$ 272
Sun 27/96:30 a.m. -
2 stops31h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 3/9C$ 278
Wed 16/94:45 p.m. -
2 stops21h 36m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 4/9C$ 281
Wed 23/94:45 p.m. -
2 stops21h 36m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 4/9C$ 282
Tue 6/109:30 a.m. -
2 stops28h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 7/9C$ 296
Find 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 8 September 2026.
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 7,457,451 searches. Data last updated 8 September 2026.
Use the filters below to find and compare flights from Niagara Falls to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest round-trip
TorontoSt. Louis
YYZ Toronto Pearson Intl - STL Lambert-St Louis
YYZSTL
Toronto Pearson Intl
Sun 27/9
6:30 a.m.-1:10 p.m.
2 stops31h 40m
Lambert-St Louis
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 278
TorontoSt. Louis
YYZ Toronto Pearson Intl - STL Lambert-St Louis
YYZSTL
Toronto Pearson Intl
Wed 16/9
4:45 p.m.-1:21 p.m.
2 stops21h 36m
Lambert-St Louis
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 281
TorontoSt. Louis
YYZ Toronto Pearson Intl - STL Lambert-St Louis
YYZSTL
Toronto Pearson Intl
Thu 15/10
7:45 a.m.-5:40 p.m.
2 stops34h 55m
Lambert-St Louis
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 310
TorontoSt. Louis
YYZ Toronto Pearson Intl - STL Lambert-St Louis
YYZSTL
Toronto Pearson Intl
Mon 12/10
7:34 p.m.-8:53 a.m.
1 stop14h 19m
Lambert-St Louis
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 319
TorontoSt. Louis
YYZ Toronto Pearson Intl - STL Lambert-St Louis
YYZSTL
Toronto Pearson Intl
Mon 7/12
2:25 p.m.-7:09 a.m.
2 stops41h 44m
Lambert-St Louis
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 344
TorontoSt. Louis
YYZ Toronto Pearson Intl - STL Lambert-St Louis
YYZSTL
Toronto Pearson Intl
Wed 7/10
11:09 a.m.-8:32 p.m.
1 stop10h 23m
Lambert-St Louis
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 365
TorontoSt. Louis
YYZ Toronto Pearson Intl - STL Lambert-St Louis
YYZSTL
Toronto Pearson Intl
Tue 27/10
11:40 a.m.-6:16 p.m.
1 stop7h 36m
Lambert-St Louis
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 369
TorontoSt. Louis
YYZ Toronto Pearson Intl - STL Lambert-St Louis
YYZSTL
Toronto Pearson Intl
Tue 6/10
7:00 a.m.-3:43 p.m.
1 stop9h 43m
Lambert-St Louis
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 370
TorontoSt. Louis
YYZ Toronto Pearson Intl - STL Lambert-St Louis
YYZSTL
Toronto Pearson Intl
Wed 7/10
8:05 a.m.-3:21 p.m.
1 stop8h 16m
Lambert-St Louis
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 370
TorontoSt. Louis
YYZ Toronto Pearson Intl - STL Lambert-St Louis
YYZSTL
Toronto Pearson Intl
Thu 17/9
7:45 a.m.-1:10 p.m.
2 stops30h 25m
Lambert-St Louis
Wed 31/12
12:00 a.m.-1:00 a.m.
Nonstop0h 00m
C$ 384
Flights are sorted by cheapest round-trip flights first.
Deals found on 3/9
Showing 1-10 of 20 resultsSorted by cheapest first
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.
YYZ-STL
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
NI4-STL
YYZ-STL
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 8 September 2026.
It’s typically best to fly out from Niagara Falls to St. Louis at noon. Doing so could potentially save you 34% on the flight price compared to flying in the afternoon, which is usually more expensive.
How much does it cost to fly round-trip from Niagara Falls to St. Louis?
Airfare is below average for this route at the moment.
Niagara Falls to St. Louis flights typically cost between C$ 741 and C$ 904 in October.The cheapest round-trip price found within the last 5 days was C$ 430 on American Airlines (14 Oct-21 Oct).
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 8 September 2026.
Get a feel of what it's like to fly with United Airlines and Air Canada from Niagara Falls to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
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 2 inbound flights from Niagara Falls per day. 2 airlines have flights to Lambert-St Louis from Niagara Falls on a regular basis.
How long is the flight from Niagara Falls to St. Louis?
A quick flight from Niagara Falls to St. Louis can take about 12h 06m. United Airlines provides one of the quickest options available for as low as C$ 658. There are 1051 km between Niagara Falls and St. Louis.
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 (67%), Jazz (67%), United Airlines (67%).
What are the cheapest flights from Niagara Falls to St. Louis?
On average you can expect to pay C$ 799 for a flight from Niagara Falls to St. Louis. The cheapest flight overall is C$ 636 while the most popular route, (Toronto Pearson Intl - Lambert-St Louis) is currently priced at C$ 536.
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.
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 8 September 2026.
Top 2 airlines flying from Niagara Falls to St. Louis
Discover the top 2 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 7,457,451 searches. Data last updated 8 September 2026.
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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