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Cheap flights from Ontario to St. Louis from C$ 244

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to St. Louis departing on 23/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Ontario to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Ontario to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Ontario to St. Louis.

Cheap last-minute flights

Planning a quick getaway from Ontario to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Ontario to St. Louis

Find recent round-trip train or bus tickets from Ontario to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
7:05 a.m. - 2:43 p.m.YYZ-STL
8h 38m1 stop
3:48 p.m. - 11:45 a.m.STL-YYZ
18h 57m2 stops
C$ 456
Find Deal
火, 4 2月 - 火, 11 2月
11:05 p.m. - 11:27 p.m.YYZ-STL
25h 22m2 stops
5:05 p.m. - 11:45 a.m.STL-YYZ
17h 40m1 stop
C$ 487
Find Deal
月, 6 1月 - 月, 13 1月
7:55 a.m. - 4:49 p.m.YYZ-STL
9h 54m1 stop
6:06 a.m. - 4:08 p.m.STL-YYZ
9h 02m1 stop
C$ 581Delta
Find Deal
火, 4 2月 - 火, 11 2月
1:14 p.m. - 10:09 p.m.YYZ-STL
9h 55m1 stop
12:00 p.m. - 9:20 p.m.STL-YYZ
8h 20m1 stop
C$ 587American Airlines
Find Deal
火, 21 1月 - 水, 22 1月
5:15 p.m. - 8:58 a.m.YUL-STL
16h 43m1 stop
6:05 a.m. - 9:06 p.m.STL-YUL
14h 01m1 stop
C$ 600Delta
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月, 13 1月 - 木, 23 1月
11:31 a.m. - 10:09 p.m.YYZ-STL
11h 38m1 stop
5:40 a.m. - 5:35 p.m.STL-YYZ
10h 55m1 stop
C$ 608American Airlines
Find Deal
月, 27 1月 - 水, 29 1月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
C$ 676United Airlines
Find Deal
月, 20 1月 - 水, 22 1月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
8:27 a.m. - 4:27 p.m.STL-YYZ
7h 00m1 stop
C$ 689Air Canada
Find Deal
木, 23 1月 - 日, 26 1月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
11:30 a.m. - 4:46 p.m.STL-YYZ
4h 16m1 stop
C$ 729Air Canada
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金, 10 1月 - 月, 13 1月
4:10 p.m. - 10:16 p.m.YYZ-STL
7h 06m1 stop
2:55 p.m. - 11:11 p.m.STL-YYZ
7h 16m1 stop
C$ 749United Airlines
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月, 6 1月 - 月, 13 1月
7:10 a.m. - 11:31 p.m.YYZ-STL
17h 21m2 stops
C$ 244
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木, 23 1月
7:05 a.m. - 2:43 p.m.YYZ-STL
8h 38m1 stop
C$ 249
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木, 23 1月
8:00 p.m. - 2:43 p.m.YYZ-STL
19h 43m2 stops
C$ 289
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水, 5 2月
1:14 p.m. - 10:09 p.m.YYZ-STL
9h 55m1 stop
C$ 334Iberia
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水, 5 2月
10:05 a.m. - 5:57 p.m.YYZ-STL
8h 52m1 stop
C$ 347Delta
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土, 15 2月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
C$ 371Air Canada
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土, 15 2月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
C$ 378Air Canada
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木, 23 1月
7:20 a.m. - 3:40 p.m.YYZ-STL
9h 20m2 stops
C$ 387United Airlines
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土, 15 2月
12:45 p.m. - 8:33 p.m.YUL-STL
8h 48m1 stop
C$ 454Delta
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火, 3 6月
6:00 a.m. - 3:21 p.m.YUL-STL
10h 21m2 stops
C$ 460United Airlines
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火, 3 6月
6:45 a.m. - 11:28 p.m.YUL-STL
17h 43m1 stop
6:49 p.m. - 4:35 p.m.STL-YUL
20h 46m2 stops
C$ 823
Find Deal
土, 28 12月 - 月, 6 1月
2:35 p.m. - 11:28 p.m.YUL-STL
33h 53m2 stops
9:29 p.m. - 4:35 p.m.STL-YUL
18h 06m1 stop
C$ 887
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金, 27 12月 - 月, 6 1月
5:30 p.m. - 11:00 p.m.YUL-STL
6h 30m1 stop
7:20 a.m. - 10:50 p.m.STL-YUL
14h 30m1 stop
C$ 1,163American Airlines
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金, 27 12月 - 土, 4 1月
6:05 a.m. - 12:00 p.m.YUL-STL
6h 55m1 stop
6:29 a.m. - 11:55 a.m.STL-YUL
4h 26m1 stop
C$ 1,199Delta
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木, 26 12月 - 金, 3 1月
6:05 a.m. - 12:00 p.m.YUL-STL
6h 55m1 stop
6:29 a.m. - 11:55 a.m.STL-YUL
4h 26m1 stop
C$ 1,238Delta
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水, 25 12月 - 金, 3 1月
10:59 a.m. - 7:00 p.m.YUL-STL
9h 01m2 stops
2:27 p.m. - 10:50 p.m.STL-YUL
7h 23m1 stop
C$ 1,261American Airlines
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金, 27 12月 - 土, 4 1月
6:20 a.m. - 2:24 p.m.YOW-STL
9h 04m1 stop
5:00 a.m. - 2:35 p.m.STL-YOW
8h 35m2 stops
C$ 1,284United Airlines
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水, 25 12月 - 木, 2 1月
8:15 a.m. - 3:06 p.m.YUL-STL
7h 51m1 stop
6:25 a.m. - 5:19 p.m.STL-YUL
9h 54m1 stop
C$ 1,363Air Canada
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金, 27 12月 - 月, 6 1月
9:15 a.m. - 3:06 p.m.YUL-STL
6h 51m1 stop
3:50 p.m. - 11:48 p.m.STL-YUL
6h 58m1 stop
C$ 1,365Air Canada
Find Deal
水, 25 12月 - 日, 5 1月
7:00 a.m. - 12:29 p.m.YUL-STL
6h 29m1 stop
7:00 a.m. - 3:58 p.m.STL-YUL
7h 58m1 stop
C$ 1,373United Airlines
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木, 26 12月 - 木, 2 1月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
C$ 674Air Canada
Find Deal
木, 16 1月 - 日, 19 1月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
C$ 676United Airlines
Find Deal
月, 20 1月 - 水, 22 1月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
C$ 689Air Canada
Find Deal
水, 26 2月 - 火, 4 3月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
C$ 712Air Canada
Find Deal
月, 20 1月 - 水, 22 1月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
C$ 719Air Canada
Find Deal
月, 3 2月 - 水, 5 2月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
C$ 732United Airlines
Find Deal
土, 4 1月 - 土, 11 1月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
C$ 733Air Canada
Find Deal
金, 10 1月 - 月, 13 1月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
C$ 739United Airlines
Find Deal
金, 10 1月 - 月, 13 1月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
C$ 741United Airlines
Find Deal
水, 5 2月 - 水, 12 2月
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
C$ 785Air Canada
Find Deal
月, 13 1月 - 金, 17 1月

Air Canada flights from Region of Ontario to St. Louis

Our best Air Canada deals on Region of Ontario to St. Louis flight tickets
Air Canada
23 Jan
YYZ1:50 p.m.Toronto Pearson Intl
2h 16m
STL3:06 p.m.Lambert-St Louis
26 Jan
STL8:27 a.m.Lambert-St Louis
7h 00m
1 stop
YYZ4:27 p.m.Toronto Pearson Intl
Air Canada
10 Jan
YYZ1:50 p.m.Toronto Pearson Intl
2h 16m
STL3:06 p.m.Lambert-St Louis
13 Jan
STL11:30 a.m.Lambert-St Louis
4h 16m
1 stop
YYZ4:46 p.m.Toronto Pearson Intl
Air Canada
10 Jan
YYZ6:52 a.m.Toronto Pearson Intl
5h 02m
1 stop
STL10:54 a.m.Lambert-St Louis
13 Jan
STL2:55 p.m.Lambert-St Louis
7h 16m
1 stop
YYZ11:11 p.m.Toronto Pearson Intl

Delta flights from Region of Ontario to St. Louis

Our best Delta deals on Region of Ontario to St. Louis flight tickets
Delta
4 Feb
YYZ7:55 a.m.Toronto Pearson Intl
9h 54m
1 stop
STL4:49 p.m.Lambert-St Louis
11 Feb
STL6:06 a.m.Lambert-St Louis
9h 02m
1 stop
YYZ4:08 p.m.Toronto Pearson Intl
Delta
13 Jan
YUL5:15 p.m.Montreal Pierre Elliott Trudeau Intl
16h 43m
1 stop
STL8:58 a.m.Lambert-St Louis
23 Jan
STL6:05 a.m.Lambert-St Louis
14h 01m
1 stop
YUL9:06 p.m.Montreal Pierre Elliott Trudeau Intl
Delta
14 Jan
YYZ7:55 a.m.Toronto Pearson Intl
9h 58m
1 stop
STL4:53 p.m.Lambert-St Louis
18 Jan
STL1:35 p.m.Lambert-St Louis
25h 36m
1 stop
YYZ4:11 p.m.Toronto Pearson Intl

See travel insights to St. Louis from

How to get the cheapest flight ticket from Region of Ontario to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

The month of February is, on average, the cheapest month to fly to St. Louis from Region of Ontario, with most prices found around C$ 617. If you don’t want to visit St. Louis in February, then you should wait until May to fly from Region of Ontario, when ticket prices are also cheap, with an average price of C$ 618.

What is the cheapest day to depart on your flight to St. Louis?

Our data shows that Tuesday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 655. The most expensive day to fly to St. Louis is Saturday, with ticket prices averaging around C$ 709.

What is the cheapest time of day to depart on your flight to St. Louis?

The cheapest time of day to fly to St. Louis is in the evening when flights can be purchased for as low as C$ 0. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 696 on average. Flights to St. Louis from Region of Ontario at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Ontario to Lambert-St Louis flight route?

Fly from Toronto Pearson Intl to Lambert-St Louis for the best Ontario - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

The best time to book a flight to St. Louis from Region of Ontario is 59 days out, which is when prices tend to be around C$ 697. In the past 72 hours, momondo users found flights from Region of Ontario to St. Louis for as low as C$ 715.

What cabin class options are available on Ontario to Lambert-St Louis flights?

There are 1 cabin classes available to choose from on Ontario to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Region of Ontario to St. Louis flights?

You could potentially save up to 41% on your flight if you consider stops on a Region of Ontario to St. Louis flight.

Cheap Region of Ontario to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to St. Louis

Best price found

C$ 244

Fastest flight time

2h 06m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Region of Ontario in the past 72 hours is C$ 244. The best round-trip flight deal from Region of Ontario to St. Louis found on momondo in the last 72 hours is C$ 456.
The fastest flight from Region of Ontario to St. Louis takes 2h 06m
Direct flights go from Region of Ontario to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • When did momondo last update prices for flights from Ontario to Lambert-St Louis Airport?

    Prices for flights from Ontario to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario to Lambert-St Louis Airport?

  • How old do you have to be to fly from Ontario to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Region of Ontario to St. Louis?


Best airlines flying from Region of Ontario to St. Louis

Compare and see reviews for airlines that fly from Region of Ontario to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom C$ 519Free CancellationRating
7.4
9,022 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 535Free CancellationRating
7.0
8,421 reviews
Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to St. Louis?

It is quick and easy to find Ontario to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

Can I find flights from Ontario to St. Louis with flexible booking policies on momondo?

Flights from Ontario to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to St. Louis?

Once you have performed a search for Ontario to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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