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

Currently, August is the cheapest month in which you can book a flight to St. Charles . Flying to St. Charles in March will prove the most costly. There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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, Frontier 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 $287, however they can be found for as little as $58.

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).

$76+ Flights to St. Charles

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights to St. Charles with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Flights to St. Charles in 2025

Popular in	December
Cheapest in	January
Average price	$316
Round-trip from	$189
One-way from	$83

Highest demand for flights based on searches. 6% potential increase in price ($24 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

From New York to Lambert-St Louis

Search Deals

One-way flight from New York to St. Charles

Search Deals

Find flight deals to St. Charles

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 3, 2025.

Thu 5/16:00 amLGA - STL

1 stop12h 15mSpirit Airlines

Thu 5/810:10 amSTL - LGA

1 stop12h 14mSpirit Airlines

Deal found 4/2$189

Sat 5/36:59 amJFK - STL

1 stop18h 07mFrontier

Sun 5/45:45 pmSTL - JFK

1 stop15h 40mFrontier

Deal found 4/2$198

Tue 4/296:00 amLGA - STL

1 stop12h 15mMultiple Airlines

Tue 5/612:15 pmSTL - LGA

2 stops19h 45mMultiple Airlines

Deal found 4/1$199

Thu 5/110:00 pmLGA - STL

1 stop27h 14mFrontier

Mon 5/55:45 pmSTL - LGA

1 stop26h 14mFrontier

Deal found 4/1$200

Wed 5/77:20 amLGA - STL

Nonstop2h 45mSouthwest

Sat 5/107:25 pmSTL - LGA

Nonstop2h 25mSouthwest

Deal found 4/2$221

Fri 5/911:50 amSWF - STL

1 stop22h 25mMultiple Airlines

Sun 5/1110:10 amSTL - SWF

1 stop23h 50mMultiple Airlines

Deal found 4/2$222

Tue 5/610:19 amLGA - STL

1 stop6h 02mAmerican Airlines

Tue 5/66:00 pmSTL - LGA

Nonstop2h 25mAmerican Airlines

Deal found 4/1$224

Wed 4/306:30 amLGA - STL

Nonstop2h 45mDelta

Sat 5/38:30 amSTL - LGA

Nonstop2h 23mDelta

Deal found 4/1$237

Tue 5/66:00 amJFK - STL

1 stop6h 45mDelta

Tue 5/64:11 pmSTL - JFK

1 stop5h 19mDelta

Deal found 4/1$241

Tue 4/295:45 amEWR - STL

1 stop12h 30mSpirit Airlines

Sat 5/3110:10 amSTL - EWR

1 stop21h 57mSpirit Airlines

Deal found 4/1$251

Wed 4/3011:25 amLGA - STL

1 stop5h 22mUnited Airlines

Sat 5/35:29 pmSTL - LGA

1 stop4h 49mUnited Airlines

Deal found 4/1$252

Tue 4/225:45 amEWR - STL

1 stop12h 30mMultiple Airlines

Thu 4/249:50 amSTL - EWR

2 stops12h 07mMultiple Airlines

Deal found 4/2$252

Best flights to St. Charles
Discover carefully curated flight deals to St. Charles that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 3, 2025.

Thu 5/16:00 amLGA - STL

1 stop12h 15mSpirit Airlines

Thu 5/810:10 amSTL - LGA

1 stop12h 14mSpirit Airlines

Deal found 4/2$189

Sat 5/36:59 amJFK - STL

1 stop18h 07mFrontier

Sun 5/45:45 pmSTL - JFK

1 stop15h 40mFrontier

Deal found 4/2$198

Tue 4/296:00 amLGA - STL

1 stop12h 15mMultiple Airlines

Tue 5/612:15 pmSTL - LGA

2 stops19h 45mMultiple Airlines

Deal found 4/1$199

Wed 5/77:20 amLGA - STL

Nonstop2h 45mSouthwest

Sat 5/107:25 pmSTL - LGA

Nonstop2h 25mSouthwest

Deal found 4/2$221

Tue 5/610:19 amLGA - STL

1 stop6h 02mAmerican Airlines

Tue 5/66:00 pmSTL - LGA

Nonstop2h 25mAmerican Airlines

Deal found 4/1$224

Wed 4/306:30 amLGA - STL

Nonstop2h 45mDelta

Sat 5/38:30 amSTL - LGA

Nonstop2h 23mDelta

Deal found 4/1$237

Wed 4/3011:25 amLGA - STL

1 stop5h 22mUnited Airlines

Sat 5/35:29 pmSTL - LGA

1 stop4h 49mUnited Airlines

Deal found 4/1$252

Thu 5/111:41 amEWR - STL

1 stop24h 50mSun Country Air

Sun 5/48:00 amSTL - EWR

1 stop25h 44mSun Country Air

Deal found 4/2$275

Sat 5/1010:00 pmLGA - STL

1 stop27h 06mFrontier

Mon 5/125:45 pmSTL - LGA

1 stop26h 14mFrontier

Deal found 4/2$200

Sat 5/248:05 amJFK - STL

1 stop7h 30mSouthern / Mokulele

Sun 5/255:15 pmSTL - JFK

3 stops19h 41mSouthern / Mokulele

Deal found 4/2$419

Fri 5/911:50 amSWF - STL

1 stop22h 25mMultiple Airlines

Sun 5/1110:10 amSTL - SWF

1 stop23h 50mMultiple Airlines

Deal found 4/3$222

Tue 5/66:00 amJFK - STL

1 stop6h 45mDelta

Tue 5/64:11 pmSTL - JFK

1 stop5h 19mDelta

Deal found 4/1$241

Last-minute flights to St. Charles
Discover last-minute flight deals to St. Charles. Data last updated April 3, 2025 and is based on user searches.

Mon 4/711:30 amLGA - STL

1 stop13h 16mFrontier

Wed 4/94:57 pmSTL - LGA

1 stop16h 35mFrontier

Deal found 4/2$270

Mon 4/77:20 pmEWR - STL

2 stops24h 21mMultiple Airlines

Fri 4/259:50 amSTL - EWR

2 stops12h 07mMultiple Airlines

Deal found 4/2$325

Tue 4/86:59 pmLGA - STL

Nonstop2h 52mDelta

Tue 4/299:06 amSTL - LGA

Nonstop2h 23mDelta

Deal found 4/2$264

Tue 4/82:29 pmLGA - STL

1 stop4h 33mAmerican Airlines

Tue 4/2912:03 pmSTL - LGA

Nonstop2h 26mAmerican Airlines

Deal found 4/2$274

Tue 4/81:00 pmEWR - STL

1 stop4h 47mDelta

Tue 4/296:50 amSTL - EWR

1 stop4h 10mDelta

Deal found 4/2$284

Tue 4/86:29 pmJFK - STL

1 stop6h 00mDelta

Wed 4/234:11 pmSTL - JFK

1 stop5h 19mDelta

Deal found 4/2$284

Tue 4/85:52 amEWR - STL

1 stop7h 28mUnited Airlines

Tue 4/84:44 pmSTL - EWR

Nonstop2h 27mUnited Airlines

Deal found 4/2$285

Tue 4/86:29 amLGA - STL

1 stop6h 51mUnited Airlines

Tue 4/85:35 pmSTL - LGA

1 stop4h 43mUnited Airlines

Deal found 4/2$295

Wed 4/96:59 amJFK - STL

1 stop30h 17mFrontier

Fri 4/259:55 pmSTL - JFK

1 stop30h 35mFrontier

Deal found 4/2$220

Wed 4/98:59 amJFK - STL

1 stop6h 58mAmerican Airlines

Tue 5/65:12 amSTL - JFK

1 stop6h 52mAmerican Airlines

Deal found 4/2$273

Wed 4/96:10 amLGA - STL

1 stop6h 40mSouthwest

Sat 4/121:45 pmSTL - LGA

2 stops8h 05mSouthwest

Deal found 4/2$320

Wed 4/91:30 pmEWR - STL

1 stop6h 53mAmerican Airlines

Sun 4/135:00 amSTL - EWR

1 stop6h 40mAmerican Airlines

Deal found 4/2$418

One-way flights to St. Charles
Search for one-way flight options to St. Charles. Find affordable one-way fares based on user searches. Data last updated April 3, 2025.

Tue 4/295:45 amEWR - STL

1 stop12h 30mSpirit Airlines

Deal found 4/2$83

Thu 5/110:57 amLGA - STL

1 stop7h 18mSpirit Airlines

Deal found 4/2$94

Fri 5/96:59 amJFK - STL

1 stop15h 06mFrontier

Deal found 4/2$105

Sat 5/310:00 pmLGA - STL

1 stop27h 06mFrontier

Deal found 4/3$106

Wed 4/2310:15 pmEWR - STL

2 stops21h 26mMultiple Airlines

Deal found 4/2$106

Tue 5/64:30 pmLGA - STL

Nonstop2h 48mDelta

Deal found 4/3$111

Wed 5/2111:25 amLGA - STL

1 stop5h 22mUnited Airlines

Deal found 4/3$116

Sat 4/265:15 pmLGA - STL

2 stops19h 30mMultiple Airlines

Deal found 4/2$120

Tue 5/137:07 pmEWR - STL

1 stop5h 31mDelta

Deal found 4/3$121

Tue 7/88:35 amJFK - STL

1 stop4h 49mDelta

Deal found 4/3$121

Tue 6/177:29 pmEWR - STL

Nonstop2h 56mUnited Airlines

Deal found 4/2$123

Sat 5/36:30 amLGA - STL

2 stops8h 40mSouthwest

Deal found 4/3$126

Cheapflights Fare Finder

Use the filters below to find and compare flights to St. Charles that are best for you.

Fly from

Route

Depart

Return

Price

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Thu 5/1

6:00 am-5:15 pm

1 stop12h 15m

Lambert-St Louis

Thu 5/8

10:10 am-11:24 pm

1 stop12h 14m

$189

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Sat 5/3

6:59 am-12:06 am

1 stop18h 07m

Lambert-St Louis

Sun 5/4

5:45 pm-10:25 am

1 stop15h 40m

$198

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Tue 4/29

6:00 am-5:15 pm

1 stop12h 15m

Lambert-St Louis

Tue 5/6

12:15 pm-9:00 am

2 stops19h 45m

$199

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Thu 5/1

10:00 pm-12:14 am

1 stop27h 14m

Lambert-St Louis

Mon 5/5

5:45 pm-8:59 pm

1 stop26h 14m

$200

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 5/7

7:20 am-9:05 am

Nonstop2h 45m

Lambert-St Louis

Sat 5/10

7:25 pm-10:50 pm

Nonstop2h 25m

$221

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Fri 5/9

11:50 am-9:15 am

1 stop22h 25m

Lambert-St Louis

Sun 5/11

10:10 am-11:00 am

1 stop23h 50m

$222

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Tue 5/6

10:19 am-3:21 pm

1 stop6h 02m

Lambert-St Louis

Tue 5/6

6:00 pm-9:25 pm

Nonstop2h 25m

$224

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 4/30

6:30 am-8:15 am

Nonstop2h 45m

Lambert-St Louis

Sat 5/3

8:30 am-11:53 am

Nonstop2h 23m

$237

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Tue 5/6

6:00 am-11:45 am

1 stop6h 45m

Lambert-St Louis

Tue 5/6

4:11 pm-10:30 pm

1 stop5h 19m

$241

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Tue 4/29

5:45 am-5:15 pm

1 stop12h 30m

Lambert-St Louis

Sat 5/31

10:10 am-9:07 am

1 stop21h 57m

$251

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 42 results

...

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?

The best time to book flights to St. Charles is 61 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 8 hours 6 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?

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

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.

United Airlines

From $259

Delta

From $196

American Airlines

From $198

Southwest

From $206

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

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

Rainfall in St. Charles 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

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

Peruse reviews from past customers who have flown Alaska Airlines, Southwest and Delta to St. Charles to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,827 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,827 reviews

Alaska Airlines

8.0

Very good

9,827 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Southwest

8.0

Very good

4,274 reviews

Alaska Airlines

8.0

Very good

9,827 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

7,897 reviews

Alaska Airlines

8.0

Very good

9,827 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,619 reviews

Alaska Airlines

8.0

Very good

9,827 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,827 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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, Frontier 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 $287, however they can be found for as little as $58.
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

Browse thousands of different options on Cheapflights for your next trip

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$76+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights to St. Charles with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Flights to St. Charles in 2025

Find the latest flights to St. Charles in 2025, 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 3, 2025.

Popular in

Cheapest in

Average price

Round-trip from

One-way from

Find flight deals to St. Charles

Cheapest flights to St. CharlesExplore 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 3, 2025.

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 3, 2025.

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 3, 2025.

Use the filters below to find and compare flights to St. Charles that are best for you.

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.

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 March 28, 2025.

How long is the flight to St. Charles?

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 December 16, 2024.

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

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

Rainfall in St. Charles by month

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

Temperature in St. Charles by month

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

Reviews of airlines servicing St. Charles

Peruse reviews from past customers who have flown Alaska Airlines, Southwest and Delta to St. Charles to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

FAQs about flying to St. Charles

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

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

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

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

Does Lambert-St Louis have rental cars?

Are there hotels close to Lambert-St Louis?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Search flights to St. Charles by cabin class

Find flights to St. Charles, based on your preferred cabin class, be it economy, premium economy, business, or first class.

100% Free

Book with Flexibility

Travel Smart

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 3, 2025.