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Cheap flights from St. Louis to Ontario from C$ 167

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Ontario departing on 11/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Ontario

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to Ontario 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 St. Louis to Ontario.

Cheap last-minute flights

Planning a quick getaway from St. Louis to Ontario? 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 Ontario, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from St. Louis to Ontario

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

All round-trip flight deals to Ontario

The cheapest plane tickets to Ontario found on KAYAK recently.
3:34 p.m. - 9:54 a.m.STL-YYZ
17h 20m2 stops
11:15 a.m. - 3:21 p.m.YYZ-STL
29h 06m1 stop
C$ 484
Find Deal
vie., 6 dic. - lun., 9 dic.
4:27 p.m. - 10:35 p.m.STL-YYZ
29h 08m1 stop
7:05 a.m. - 3:21 p.m.YYZ-STL
9h 16m1 stop
C$ 487
Find Deal
mar., 24 dic. - mar., 31 dic.
10:20 a.m. - 8:31 p.m.STL-YYZ
9h 11m1 stop
10:35 p.m. - 4:45 p.m.YYZ-STL
19h 10m2 stops
C$ 631WestJet
Find Deal
mié., 5 feb. - mié., 5 feb.
5:45 a.m. - 5:35 p.m.STL-YYZ
10h 50m1 stop
6:15 a.m. - 3:40 p.m.YYZ-STL
10h 25m1 stop
C$ 648American Airlines
Find Deal
mié., 18 dic. - mié., 25 dic.
12:00 p.m. - 9:20 p.m.STL-YYZ
8h 20m1 stop
6:15 a.m. - 2:07 p.m.YYZ-STL
8h 52m1 stop
C$ 662American Airlines
Find Deal
mié., 8 ene. - mié., 22 ene.
2:49 p.m. - 3:05 p.m.STL-YYZ
23h 16m1 stop
4:20 p.m. - 1:53 p.m.YYZ-STL
22h 33m1 stop
C$ 720Alaska Airlines
Find Deal
mié., 8 ene. - mié., 22 ene.
2:55 p.m. - 9:25 p.m.STL-YYZ
5h 30m1 stop
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
C$ 741Air Canada
Find Deal
mié., 8 ene. - mié., 22 ene.
7:00 a.m. - 2:55 p.m.STL-YYZ
30h 55m1 stop
4:10 p.m. - 2:25 p.m.YYZ-STL
23h 15m1 stop
C$ 752Alaska Airlines
Find Deal
lun., 24 feb. - vie., 28 feb.
5:00 a.m. - 12:31 p.m.STL-YYZ
6h 31m1 stop
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
C$ 792Air Canada
Find Deal
mar., 24 dic. - mar., 31 dic.
6:00 a.m. - 11:11 p.m.STL-YYZ
16h 11m2 stops
6:15 a.m. - 11:41 p.m.YYZ-STL
18h 26m1 stop
C$ 962WestJet
Find Deal
sáb., 30 nov. - dom., 1 dic.
5:02 p.m. - 9:54 a.m.STL-YYZ
15h 52m1 stop
C$ 167
Find Deal
mié., 11 dic.
6:41 p.m. - 12:25 a.m.STL-YYZ
28h 44m1 stop
C$ 190
Find Deal
jue., 28 nov.
7:00 a.m. - 2:55 p.m.STL-YYZ
30h 55m1 stop
C$ 298Alaska Airlines
Find Deal
mar., 10 dic.
7:00 a.m. - 2:55 p.m.STL-YYZ
30h 55m1 stop
C$ 311Alaska Airlines
Find Deal
lun., 9 dic.
5:40 p.m. - 11:06 p.m.STL-YYZ
4h 26m1 stop
C$ 316Air Canada
Find Deal
jue., 12 dic.
5:45 a.m. - 5:40 p.m.STL-YYZ
10h 55m1 stop
C$ 354American Airlines
Find Deal
mié., 1 ene.
5:40 p.m. - 11:59 p.m.STL-YYZ
5h 19m1 stop
C$ 371Air Canada
Find Deal
dom., 8 dic.
5:45 a.m. - 3:00 p.m.STL-YYZ
8h 15m2 stops
C$ 384American Airlines
Find Deal
mié., 11 dic.
11:20 a.m. - 10:15 p.m.STL-YYZ
9h 55m2 stops
C$ 406United Airlines
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jue., 12 dic.
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
C$ 453United Airlines
Find Deal
lun., 9 dic.
10:17 p.m. - 11:35 p.m.STL-YYZ
24h 18m2 stops
8:00 p.m. - 5:41 p.m.YYZ-STL
22h 41m1 stop
C$ 796
Find Deal
dom., 24 nov. - mié., 27 nov.
5:21 p.m. - 6:40 p.m.STL-YYZ
24h 19m3 stops
11:05 p.m. - 4:26 p.m.YYZ-STL
18h 21m2 stops
C$ 827
Find Deal
dom., 24 nov. - mié., 27 nov.
5:21 p.m. - 3:17 p.m.STL-YYZ
20h 56m1 stop
8:00 p.m. - 7:41 a.m.YYZ-STL
12h 41m1 stop
C$ 869
Find Deal
sáb., 23 nov. - dom., 24 nov.
5:34 p.m. - 11:59 p.m.STL-YYZ
5h 25m1 stop
10:00 a.m. - 10:40 a.m.YYZ-STL
25h 40m2 stops
C$ 1,117WestJet
Find Deal
dom., 24 nov. - lun., 25 nov.
12:59 p.m. - 7:00 p.m.STL-YYZ
5h 01m1 stop
10:55 a.m. - 7:48 p.m.YYZ-STL
9h 53m1 stop
C$ 1,312American Airlines
Find Deal
dom., 24 nov. - lun., 25 nov.
12:37 p.m. - 9:42 p.m.STL-YUL
8h 05m2 stops
6:00 a.m. - 3:39 p.m.YUL-STL
10h 39m1 stop
C$ 1,572United Airlines
Find Deal
sáb., 23 nov. - sáb., 30 nov.
12:37 p.m. - 7:44 a.m.STL-YYZ
18h 07m2 stops
12:20 p.m. - 7:51 p.m.YYZ-STL
8h 31m1 stop
C$ 1,755United Airlines
Find Deal
sáb., 23 nov. - dom., 24 nov.
7:10 p.m. - 11:34 p.m.STL-YYZ
27h 24m1 stop
6:00 a.m. - 1:15 p.m.YYZ-STL
8h 15m1 stop
C$ 2,320WestJet
Find Deal
vie., 22 nov. - dom., 24 nov.
2:23 p.m. - 9:29 p.m.STL-YYZ
30h 06m2 stops
1:10 p.m. - 1:27 p.m.YYZ-STL
25h 17m2 stops
C$ 2,433Alaska Airlines
Find Deal
dom., 24 nov. - mié., 27 nov.
7:00 a.m. - 10:44 p.m.STL-YYZ
14h 44m2 stops
6:14 a.m. - 11:59 p.m.YYZ-STL
18h 45m2 stops
C$ 2,505Alaska Airlines
Find Deal
dom., 24 nov. - lun., 25 nov.
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
C$ 741Air Canada
Find Deal
mié., 8 ene. - mié., 22 ene.
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
C$ 886
Find Deal
mar., 24 dic. - mar., 31 dic.
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
C$ 890
Find Deal
jue., 16 ene. - mar., 21 ene.
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
C$ 897
Find Deal
mié., 8 ene. - mié., 22 ene.
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
C$ 973United Airlines
Find Deal
jue., 2 ene. - jue., 9 ene.
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
C$ 1,093Air Canada
Find Deal
lun., 23 dic. - vie., 27 dic.
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
C$ 1,115United Airlines
Find Deal
sáb., 14 dic. - lun., 16 dic.
1:25 p.m. - 5:00 p.m.STL-YUL
2h 35mdirect
6:10 p.m. - 7:58 p.m.YUL-STL
2h 48mdirect
C$ 1,138Air Canada
Find Deal
mar., 13 may. - mar., 27 may.
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
C$ 1,139United Airlines
Find Deal
dom., 16 mar. - dom., 23 mar.
3:50 p.m. - 6:45 p.m.STL-YYZ
1h 55mdirect
1:50 p.m. - 3:06 p.m.YYZ-STL
2h 16mdirect
C$ 1,190United Airlines
Find Deal
vie., 20 dic. - vie., 27 dic.

WestJet flights from St. Louis to Region of Ontario

Our best WestJet deals on St. Louis to Region of Ontario flight tickets
WestJet
5 Feb
STL10:20 a.m.Lambert-St Louis
9h 11m
1 stop
YYZ8:31 p.m.Toronto Pearson Intl
5 Feb
YYZ10:35 p.m.Toronto Pearson Intl
19h 10m
2 stops
STL4:45 p.m.Lambert-St Louis
WestJet
30 Nov
STL6:00 a.m.Lambert-St Louis
16h 11m
2 stops
YYZ11:11 p.m.Toronto Pearson Intl
1 Dec
YYZ6:15 a.m.Toronto Pearson Intl
18h 26m
1 stop
STL11:41 p.m.Lambert-St Louis
WestJet
13 Dec
STL6:00 a.m.Lambert-St Louis
16h 34m
2 stops
YYZ11:34 p.m.Toronto Pearson Intl
15 Dec
YYZ6:30 a.m.Toronto Pearson Intl
5h 10m
1 stop
STL10:40 a.m.Lambert-St Louis

Alaska Airlines flights from St. Louis to Region of Ontario

Our best Alaska Airlines deals on St. Louis to Region of Ontario flight tickets
Alaska Airlines
8 Jan
STL2:49 p.m.Lambert-St Louis
23h 16m
1 stop
YYZ3:05 p.m.Toronto Pearson Intl
22 Jan
YYZ4:20 p.m.Toronto Pearson Intl
22h 33m
1 stop
STL1:53 p.m.Lambert-St Louis
Alaska Airlines
24 Feb
STL7:00 a.m.Lambert-St Louis
30h 55m
1 stop
YYZ2:55 p.m.Toronto Pearson Intl
28 Feb
YYZ4:10 p.m.Toronto Pearson Intl
23h 15m
1 stop
STL2:25 p.m.Lambert-St Louis
Alaska Airlines
21 Jan
STL2:49 p.m.Lambert-St Louis
23h 16m
1 stop
YYZ3:05 p.m.Toronto Pearson Intl
23 Jan
YYZ4:20 p.m.Toronto Pearson Intl
32h 39m
1 stop
STL11:59 p.m.Lambert-St Louis

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

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 airline that flies to Region of Ontario from St. Louis?

Air Canada. Air Canada is the most popular carrier operating from St. Louis to Region of Ontario

What is the cheapest St. Louis to Region of Ontario flight route?

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

How many flights depart from St. Louis to Region of Ontario on average per day?

As of November 2024, 1 flights take off from St. Louis and land in Region of Ontario each day. The most common flight departure time for this route is 3:00p.m., with 100% of daily flights taking off in the afternoon.

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

You could potentially save up to 54% on your flight if you consider stops on a St. Louis to Region of Ontario flight.

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

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

Best price found

C$ 167

Fastest flight time

1h 55m

Direct flights

Every day

Airports in Region of Ontario

2 airports
The best one-way flight to Region of Ontario from St. Louis in the past 72 hours is C$ 167. The best round-trip flight deal from St. Louis to Region of Ontario found on momondo in the last 72 hours is C$ 484.
The fastest flight from St. Louis to Region of Ontario takes 1h 55m
Direct flights go from St. Louis to Region of Ontario every day.
There are 2 airports near Region of Ontario: Montreal Pierre Elliott Trudeau Intl (YUL), Toronto Pearson Intl (YYZ)

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Ontario.

  • What documentation or ID do you need to fly to Ontario?

    The required travel and health documents for your Ontario trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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


Best airlines flying from St. Louis to Region of Ontario

Compare and see reviews for airlines that fly from St. Louis to Region of Ontario with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 363Free CancellationRating
7.0
8,235 reviews
Search Air Canada flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Ontario for you.

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

Yes. momondo allows you to filter the results for St. Louis to Ontario flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between St. Louis and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from St. Louis to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.


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