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St. Charles

$63+ Cheap flights to St. Charles

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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
May 19 — May 261
Tue 5/19
Tue 5/26
1 adult, Economy
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Flights to St. Charles in 2026

Cheapest flights to St. Charles
Explore the most affordable flight options available to St. Charles. Find the lowest fares based on data from user searches, with prices last updated on April 19, 2026.

This CheapOair deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/271:54 pm
EWR
-
STL
1 stop10h 25m
Frontier
Tue 4/284:59 pm
STL
-
EWR
1 stop19h 00m
Frontier
Deal found 4/17$292
This Kissandfly.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2310:29 pm
EWR
-
STL
1 stop9h 21m
Frontier
Sun 4/264:59 pm
STL
-
EWR
1 stop19h 00m
Frontier
Deal found 4/17$293
This Expedia deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2110:00 pm
LGA
-
STL
1 stop11h 52m
Frontier
Fri 7/244:10 pm
STL
-
LGA
1 stop22h 51m
Frontier
Deal found 4/16$295
This Expedia deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2210:29 pm
EWR
-
STL
1 stop11h 26m
Frontier
Mon 5/254:19 pm
STL
-
EWR
1 stop17h 13m
Frontier
Deal found 4/16$295
This Southwest deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/63:05 pm
LGA
-
STL
Nonstop2h 55m
Southwest
Wed 7/87:55 pm
STL
-
LGA
Nonstop2h 25m
Southwest
Deal found 4/15$296
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/265:15 am
EWR
-
STL
2 stops34h 21m
Multiple Airlines
Fri 5/18:23 pm
STL
-
EWR
1 stop24h 06m
Multiple Airlines
Deal found 4/15$296
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/293:29 pm
LGA
-
STL
1 stop8h 50m
Multiple Airlines
Tue 5/126:33 pm
STL
-
LGA
1 stop22h 15m
Multiple Airlines
Deal found 4/14$297
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/299:39 am
EWR
-
STL
1 stop4h 26m
Delta
Mon 6/227:12 pm
STL
-
EWR
1 stop4h 45m
Delta
Deal found 4/14$297
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1710:00 pm
LGA
-
STL
1 stop11h 55m
Multiple Airlines
Mon 5/185:27 pm
STL
-
LGA
2 stops15h 33m
Multiple Airlines
Deal found 4/14$298
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/110:29 pm
EWR
-
STL
1 stop9h 21m
Multiple Airlines
Mon 5/115:27 pm
STL
-
EWR
2 stops14h 32m
Multiple Airlines
Deal found 4/14$298
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:29 pm
EWR
-
STL
2 stops25h 50m
Frontier
Mon 5/43:21 pm
STL
-
EWR
1 stop20h 11m
Frontier
Deal found 4/14$299
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/13:29 pm
LGA
-
STL
2 stops16h 21m
Multiple Airlines
Mon 5/43:21 pm
STL
-
LGA
1 stop27h 26m
Multiple Airlines
Deal found 4/15$300

Find flight deals to St. Charles

Find the latest flights to St. Charles in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 2,558,603 searches and data was last updated on April 19, 2026.

Popular in

November

Cheapest in

August

Average price

$386

Round-trip from

$295

One-way from

$63
Highest demand for flights based on searches. 7% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
From New York to Lambert-St Louis
Search Deals
One-way flight from New York to St. Charles
Search Deals

Cheapflights Fare Finder

 
Locate flights to St. Charles that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 2,558,603 searches and data was last updated on April 19, 2026.
Use the filters below to find and compare flights to St. Charles that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest round-trip

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Wed 5/6

3:08 pm-7:27 pm

1 stop5h 19m

Lambert-St Louis

Sat 5/9

6:15 am-9:49 am

Nonstop2h 34m

$304

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Sat 5/30

6:00 am-7:45 am

Nonstop2h 45m

Lambert-St Louis

Sat 6/6

8:00 pm-11:25 pm

Nonstop2h 25m

$315

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 5/6

7:15 pm-9:09 pm

Nonstop2h 54m

Lambert-St Louis

Wed 7/8

9:24 am-12:55 pm

Nonstop2h 31m

$316

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 6/24

6:30 am-8:09 am

Nonstop2h 39m

Lambert-St Louis

Thu 6/25

12:35 pm-4:09 pm

Nonstop2h 34m

$321

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Sun 7/5

6:00 am-9:32 am

1 stop4h 32m

Lambert-St Louis

Wed 7/8

9:24 am-3:24 pm

1 stop5h 00m

$323

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Sat 5/23

4:00 pm-9:38 pm

1 stop6h 38m

Lambert-St Louis

Sun 5/24

6:00 am-9:28 am

Nonstop2h 28m

$327

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Wed 6/24

7:56 pm-12:09 am

1 stop29h 13m

Lambert-St Louis

Wed 8/5

5:33 pm-9:38 am

2 stops15h 05m

$332

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Sat 5/30

6:29 am-11:54 am

1 stop6h 25m

Lambert-St Louis

Sat 6/6

4:00 pm-11:03 pm

1 stop6h 03m

$335

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Wed 4/29

9:59 pm-11:57 pm

Nonstop2h 58m

Lambert-St Louis

Tue 5/12

7:45 am-3:21 pm

1 stop6h 36m

$348

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 5/6

9:55 am-5:55 pm

2 stops9h 00m

Lambert-St Louis

Sat 5/9

6:10 am-11:20 pm

2 stops16h 10m

$350

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 60 resultsSorted by cheapest first
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2
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6

Best time to book a flight to St. Charles

Have a flexible travel schedule? Discover the best time to fly to St. Charles 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 to St. Charles

When is the best time to book a flight to St. Charles?

Use this chart to determine the optimal time to book a round-trip flight from New York to St. Charles. Price data was last updated on April 17, 2026.

The best time to book flights to St. Charles is 79 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

How long is the flight to St. Charles?

On average, a flight from New York to St. Charles takes 5 hours 46 minutes. Flights to St. Charles from other popular cities in USA will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to St. Charles?

Use this chart to determine the cheapest time to fly round-trip from New York to St. Charles. Price data was last updated on April 18, 2026.

Users looking for the lowest fares to St. Charles should consider flying on Saturday evenings, when prices are typically cheapest. Budget-minded travelers will want to avoid Sunday afternoons, when prices are usually at their highest.

Weekly flight availability to St. Charles

The most flights from New York to St. Charles are scheduled on a Friday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

What are the most popular airlines that fly to St. Charles?

The most popular airlines flying from New York to St. Charles are United Airlines, Delta and American Airlines.

Southwest
Southwest
From $77
American Airlines
American Airlines
From $91
Delta
Delta
From $60
Frontier
Frontier
From $56

What are the cheapest airlines that fly to St. Charles?

The cheapest airlines flying from New York to St. Charles are Delta, Southwest and American Airlines.

Rainfall in St. Charles by month

Plan your trip to St. Charles by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Charles ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Charles when rainfall is around 2.2 in.

Temperature in St. Charles by month

Plan your trip to St. Charles by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Charles, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Charles

Get insights into the airlines that provide service to St. Charles. 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. Charles. Reviews last updated April 19, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines to the United States. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,327 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,327 reviews
Southwest
8.0
Very good
4,327 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,422 reviews
Southwest
8.0
Very good
4,327 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,604 reviews
Southwest
8.0
Very good
4,327 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,619 reviews
Southwest
8.0
Very good
4,327 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
2,986 reviews
Southwest
8.0
Very good
4,327 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

FAQs about flying to St. Charles

  • Can I find cheaper flights to St. Charles if I am willing to have layovers?

    Yes, flights with layovers are often cheaper than direct flights. Keep an eye out for flight deals to St. Charles on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to St. Charles?

    Based on reviews from Cheapflights users, Spirit Airlines is rated the highest out of the airlines that fly to St. Charles.

  • How much is a round-trip flight to St. Charles?

    A round-trip flight to St. Charles will typically cost around $61, however they can be found for as little as $61.

  • Where does the fastest flight to St. Charles depart from?

    For those looking to save time traveling to St. Charles, Kansas City offers the quickest one-way flight (1 hour 0 minutes).

  • Does Lambert-St Louis have rental cars?

    Yes. Those touching down at Lambert-St Louis can take advantage of the rental car services offered upon their arrival.

  • Are there hotels close to Lambert-St Louis?

    Yes. Lambert-St Louis has hotels nearby for those requiring accommodations. Hampton Inn St. Louis-Airport is the closest property to Lambert-St Louis (0.0 mi away from Lambert-St Louis).

See more FAQs

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