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$140 Find cheap flights from Canada to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 5/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 6/7
Fri 6/14

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

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Flights to St. Louis - Travel Insights & Trends

Get data-powered insights and trends for flights to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to St. Louis?

These are the best prices found by users searching on KAYAK in the last 72 hours.
In the last 3 days, the lowest price for a flight to St. Louis was $140 for a one-way ticket from Calgary and $253 for a round-trip. The most popular route searched for by our users was for flights from Toronto to St. Louis and the best round-trip deal found in the last 3 days was $290.

How much is a flight to St. Louis?

The average and cheapest price for all flights to St. Louis from each origin found by users searching on KAYAK in the last month.
On average, a flight to St. Louis costs $369. The cheapest price found on KAYAK in the last 2 weeks cost $228 and departed from Toronto Pearson Intl Airport. The most popular routes on KAYAK are Toronto to St. Louis which costs $434 on average, and Montreal to St. Louis, which costs $443 on average.
See prices from:

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

The average price of all flights to St. Louis clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to St. Louis is Thursday where tickets can be as cheap as $477. On the other hand, the most expensive day to fly is Monday, where prices are $627 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights to St. Louis is January, where tickets cost $387 on average for one-way flights. On the other hand, the most expensive months are November and June, where the average cost of tickets from Canada is $603 and $568 respectively. For return trips, the best month to travel is January with an average price of $417.

What is the cheapest time of day to fly to St. Louis?

The average price for all flights to St. Louis depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to St. Louis is generally in the afternoon, when flights cost $430 on average. The most expensive time of day to fly to St. Louis is generally at night, which is peak travel time and where the average cost of a ticket is $665.

What is a good deal for flights to St. Louis?

If you’re looking for cheap airfare to St. Louis, 25% of our users found tickets to St. Louis for the following prices or less: From Montreal Pierre Elliott Trudeau Intl Airport $249 one-way - $285 round-trip, from Toronto Pearson Intl Airport $267 one-way - $230 round-trip.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 78 days before departure.

Which airline offers the most flights to St. Louis?

Of the 9 airlines that fly to St. Louis, Southwest offers the most flights, with around 1,545 per week, followed by American Airlines with 377 flights per week.

How long is the flight to St. Louis?

The duration of your flight to St. Louis depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to St. Louis on KAYAK are from Toronto, which takes 2h 06m, Montreal, which takes 2h 35m, Calgary, which takes 5h 40m, and Vancouver, which takes 6h 17m.

How many direct flights to St. Louis are there each day?

There are around 354 direct flights from within Canada to St. Louis every day. Most flights depart in the morning, with 7:00 am the most common departure time and 43% of flights departing in the morning.

How many direct flights to St. Louis are there each week?

Each week there are around 2,474 direct flights from within Canada to St. Louis. The most common day for departures is Friday, with 16% of flights taking off on this day.

How many long-haul flights are there to St. Louis each week?

There are not any long-haul (6-12 hour flight duration) or medium-haul (3-6 hour flight duration) flights to St. Louis. Instead, there are 21 short-haul flights (up to 3 hour flight duration), with the most arriving from Toronto.

How many cities have direct flights to St. Louis?

From Canada, there are direct flights to St. Louis from 2 cities. The city with the most direct flights is Toronto, with 14 direct flights each week.

Good to know

Low season

January

High season

March

Cheapest flight

$140
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Calgary to St. Louis

FAQs - booking St. Louis flights

  • What is the cheapest flight to St. Louis?

    In the last 3 days, the lowest price for a flight to St. Louis was $140 for a one-way ticket from Calgary and $253 for a round-trip. The most popular route searched for by our users was for flights from Toronto to St. Louis and the best round-trip deal found in the last 3 days was $290.

  • How far is St. Louis from central St. Louis?

    Central St. Louis is 13 miles away from St. Louis.

  • What is the name of St. Louis’s airport?

    When flying to St. Louis, you'll arrive at St. Louis (STL). The airport is also known as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl.

  • How much is a flight to St. Louis?

    On average, a flight to St. Louis costs $369. The cheapest price found on KAYAK in the last 2 weeks cost $228 and departed from Toronto Pearson Intl Airport.

  • How does KAYAK find such low prices on flights to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to St. Louis

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Prefer to fly non-stop to Lambert-St Louis?

Find which airlines fly direct to Lambert-St Louis, which days they fly and book direct flights.

Nonstop departures

Canada to Lambert-St Louis

Monday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Tuesday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Wednesday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 more

Thursday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Friday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Saturday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Sunday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

See more direct flights

Nonstop returns

Lambert-St Louis to Canada

Monday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Tuesday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Wednesday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 more

Thursday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Friday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Saturday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Sunday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

See more direct flights
See more direct flights

Top 4 airlines serving from Canada to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Canada to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10789 reviews
8.2Boarding
8.6Crew
7.4Food
8.0Entertainment
7.9Comfort
Airline reviews

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

2.0 MediocreAnonymous, May 2024AVL - LGA
Read more about Delta reviews

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

Everything was great. The big planes could still stand to have a bit more leg room. Crew was amazing!!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

The flight was excellent, I recommend people to fly with Delta

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

The crew were very welcoming and helpful. I just wish economy had a bit more leg room. My knees were constantly hitting the chair in front of me.

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

It was good! Appreciated that it was very on schedule so it made the connecting flight less stressful

Two flights,both poor. No entertainment. Cramped and uncomfortable seats, little space, the rest was OK. Staff were acceptable good.

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

The crew was doing their best on an old plane needing updating. Chairs that creaked and wouldn’t stay in position. My tray table was unusable as was on-board entertainment due the audio needing usb earphones (that were not provided). Prior to boarding in Toronto and despite being scheduled for a wheelchair and assistance, we were dropped off by clubcar without a wheelchair which I found myself by a gate. Due to no boarding gate assigned at that time we waited and when it was, it subsequently was moved from 64 to 95. No help could be found so I pushed my husband’s chair to that furthest gate in the airport at the highest speed possible for a 73 year old. And by that I mean I ran. It was a very stressful experience.

Wifi wasn't working on one of the UA flights after boarding.

Leg room was lacking. Legs crammed into seat in front.

T hey did a great job. Flight was on time .

the plane was old. the wifi didn’t work. the entertainment was boring and dated. the charging ports were impossible to find. i was mostly ignored by flight attendants that had no problem speaking to the man beside me. i got two drinks the entire time i was on the plane.

Crew was not very helpful. They forgot to serve me coffee and had to wait for a long time.It looked as if they were not very happy with what they were doing.

The flight I was connecting with waited for me even though my 1st flight was late. I really appreciated that.

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Again, multiple delays and I eventually just canceled and drove!

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American cancelled our flight home. Zero option for hotel, alternative transportation and took 3 hours to find our bags so we could take a 3 hour UBER ride home on our dime. Never flying AA again.

They gave my seat away although it was a connecting flight with them and the flight was a bit delayed.

They ocer booked the connecting flight. My bags took a long time to come out, nevertheless I got to the gate in time to board, but they have given my seat to another passenger. They were aware I was connecting from another flight that was a little late, but they did not care. The customer representatives were rude. A horrible experience.

I liked the early check in. Flight was a bit bumpy due yo weather. Overall, everything went well.

Limited snack options cause the snack vendor was on strike

The experience was generally above average. The only downside was the absence of WiFi during my flight from Vancouver to San Francisco.

on demand entertainment in seat back awesome Check in Kiosk too demanding with endless demand for more information information then says go to counter. Counter agent unfriendly. Do it yourself check in luggage procedure not intuitive, upset employees frustrated the whole procedure.

It was an excellent experience, traveling from Toronto to Denver with United.

Ontime boarding. Almost 1 hour take off delay. We could have boarded slightly later since the pilots were in traffic

Flight was delayed, I had to put my luggage all the way in the back! They served only a beverage no snack on the way in Air Canada, definitely not a good first impression.

Headphones for the movies have too much bass and can't be adjusted. Almost impossible to hear. Great movie selections but can't really watch them because you can't hear them. Also the system is very slow.

This was the first AC flight in a long time that we experienced no delays or frustrations. The gate attendant was extremely polite and accommodating to my husband who has Parkinson’s disease which made boarding extremely stress free. Flight departed ON TIME and was a smooth ride. If only all my AC experiences could be like this.

I didn’t like the fact that all the customs officers went to lunch so I was in line for 90 minutes due to where the staff directed me. We were told three very different reasons for why the plane was delayed. It was a crowded plane with difficult storage situations for the Carry On bags. The Air Canada airline staff were all very good and professional. I was so disappointed in my cheese and fruit box as the cheese had molded and the fruit wasn’t fresh so I couldn’t eat the majority of the food. This was the last meal I could find as the restaurants had closed when I got in to my destination. I think you could work on improving the food quality.

Book cheap flights from Canada to St. Louis

Recent round-trip flight deals

 
These are the cheapest round-trip flights to St. Louis found on KAYAK in the last 72 hours.
6/4Tue
1 stop
17h 35mYVR-STL
6/11Tue
1 stop
22h 07mSTL-YVR
$253
6/4Tue
1 stop
17h 45mYYZ-STL
6/11Tue
2 stops
17h 45mSTL-YYZ
$290
6/17Mon
2 stopsDelta
15h 58mYYC-STL
7/23Tue
1 stopDelta
9h 33mSTL-YYC
$320
7/11Thu
1 stopAmerican Airlines
7h 44mYVR-STL
8/11Sun
1 stopAmerican Airlines
16h 46mSTL-YVR
$352
9/7Sat
2 stopsUnited Airlines
10h 49mYHZ-STL
9/10Tue
1 stopUnited Airlines
6h 15mSTL-YHZ
$362
7/11Thu
2 stopsDelta
7h 09mYVR-STL
8/11Sun
1 stopDelta
6h 51mSTL-YVR
$364
5/21Tue
nonstopAir Canada
2h 06mYYZ-STL
5/28Tue
1 stopAir Canada
4h 22mSTL-YYZ
$366
9/7Sat
2 stopsUnited Airlines
10h 49mYHZ-STL
9/10Tue
2 stopsUnited Airlines
9h 04mSTL-YHZ
$368
5/21Tue
1 stopAir Canada
5h 05mYYZ-STL
5/27Mon
1 stopAir Canada
5h 27mSTL-YYZ
$371
9/13Fri
1 stopAmerican Airlines
6h 39mYYZ-STL
9/15Sun
1 stopAmerican Airlines
6h 26mSTL-YYZ
$385

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to St. Louis found on KAYAK in the last 72 hours.
5/27Mon
1 stop
26h 13mYYC-STL
$140
5/30Thu
1 stop
11h 59mYYZ-STL
$142
7/9Tue
1 stopAmerican Airlines
16h 55mYVR-STL
$180
7/10Wed
2 stopsDelta
7h 09mYVR-STL
$181
8/23Fri
1 stopAir Canada
5h 40mYHZ-STL
$203
5/30Thu
nonstopUnited Airlines
2h 06mYYZ-STL
$203
6/30Sun
1 stopDelta
9h 33mYVR-STL
$204
8/28Wed
nonstopAir Canada
2h 35mYUL-STL
$209
8/28Wed
2 stopsAmerican Airlines
9h 45mYUL-STL
$232
9/16Mon
nonstopUnited Airlines
2h 05mYYZ-STL
$295

Search by stops

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Last minute flights to St. Louis

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to St. Louis that are departing in the next 10 days.
5/13Mon
multi-stop
28h 09mYYZ-STL
5/16Thu
multi-stop
10h 50mSTL-YYZ
$388
5/13Mon
multi-stop
26h 54mYYZ-STL
5/16Thu
multi-stop
11h 05mSTL-YYZ
$459
5/13Mon
multi-stop
28h 09mYYZ-STL
5/16Thu
multi-stop
26h 42mSTL-YYZ
$460
5/10Fri
multi-stop
15h 13mYYZ-STL
5/12Sun
multi-stop
11h 05mSTL-YYZ
$501
5/10Fri
multi-stop
28h 58mYYZ-STL
5/12Sun
multi-stop
11h 05mSTL-YYZ
$511
5/10Fri
multi-stopWestJet
7h 51mYYC-STL
5/12Sun
multi-stopWestJet
15h 35mSTL-YYC
$582
5/9Thu
multi-stopWestJet
12h 52mYYC-STL
5/12Sun
multi-stopWestJet
15h 35mSTL-YYC
$586
5/10Fri
nonstopAir Canada
2h 35mYUL-STL
5/14Tue
multi-stopAir Canada
7h 22mSTL-YUL
$672
5/10Fri
nonstopAir Canada
2h 06mYYZ-STL
5/17Fri
multi-stopAir Canada
6h 38mSTL-YYZ
$925
5/10Fri
multi-stopAmerican Airlines
9h 50mYUL-STL
5/14Tue
multi-stopAmerican Airlines
10h 26mSTL-YUL
$1,142

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Flights to St. Louis

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Canada

Cabin classes:

$450
$754
$228