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 $284, however they can be found for as little as $59.

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).

$85+ Flights to St. Charles

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Flights to St. Charles in 2025

Popular in	December
Cheapest in	January
Average price	$322
Round-trip from	$201
One-way from	$91

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. 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 24, 2025.

Thu 5/810:00 pmLGA - STL

1 stop27h 14mFrontier

Mon 5/125:45 pmSTL - LGA

1 stop26h 14mFrontier

Deal found 4/23$201

Fri 5/26:59 amJFK - STL

1 stop15h 06mFrontier

Sun 5/49:55 pmSTL - JFK

1 stop30h 35mFrontier

Deal found 4/23$201

Tue 5/1310:00 pmLGA - STL

1 stop27h 06mMultiple Airlines

Thu 5/1510:10 amSTL - LGA

1 stop12h 14mMultiple Airlines

Deal found 4/23$206

Wed 5/145:54 amLGA - STL

2 stops28h 21mSpirit Airlines

Sat 5/1710:10 amSTL - LGA

1 stop12h 14mSpirit Airlines

Deal found 4/23$212

Tue 5/208:53 amLGA - STL

Nonstop2h 50mAmerican Airlines

Tue 5/201:38 pmSTL - LGA

1 stop4h 33mAmerican Airlines

Deal found 4/23$214

Wed 6/186:15 amLGA - STL

Nonstop2h 35mSouthwest

Sat 6/217:05 pmSTL - LGA

Nonstop2h 25mSouthwest

Deal found 4/22$221

Wed 6/1811:25 amLGA - STL

1 stop5h 05mUnited Airlines

Sat 6/215:27 pmSTL - LGA

1 stop4h 55mUnited Airlines

Deal found 4/22$236

Wed 5/216:30 amLGA - STL

Nonstop2h 37mDelta

Wed 5/286:00 amSTL - LGA

Nonstop2h 28mDelta

Deal found 4/23$237

Wed 5/283:55 pmJFK - STL

1 stop8h 56mAmerican Airlines

Thu 5/295:00 amSTL - JFK

1 stop14h 00mAmerican Airlines

Deal found 4/22$238

Tue 6/246:00 amJFK - STL

1 stop4h 43mDelta

Wed 6/2510:48 amSTL - JFK

1 stop6h 17mDelta

Deal found 4/22$241

Fri 5/911:50 amSWF - STL

1 stop22h 25mMultiple Airlines

Sun 5/1110:10 amSTL - SWF

1 stop23h 50mMultiple Airlines

Deal found 4/23$259

Wed 5/145:55 amEWR - STL

2 stops28h 20mMultiple Airlines

Fri 5/1612:15 pmSTL - EWR

2 stops35h 14mMultiple Airlines

Deal found 4/23$259

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 24, 2025.

Thu 5/810:00 pmLGA - STL

1 stop27h 14mFrontier

Mon 5/125:45 pmSTL - LGA

1 stop26h 14mFrontier

Deal found 4/23$201

Tue 5/1310:00 pmLGA - STL

1 stop27h 06mMultiple Airlines

Thu 5/1510:10 amSTL - LGA

1 stop12h 14mMultiple Airlines

Deal found 4/23$206

Wed 5/145:54 amLGA - STL

2 stops28h 21mSpirit Airlines

Sat 5/1710:10 amSTL - LGA

1 stop12h 14mSpirit Airlines

Deal found 4/23$212

Tue 5/208:53 amLGA - STL

Nonstop2h 50mAmerican Airlines

Tue 5/201:38 pmSTL - LGA

1 stop4h 33mAmerican Airlines

Deal found 4/23$214

Wed 6/186:25 pmLGA - STL

Nonstop2h 50mSouthwest

Sat 6/217:05 pmSTL - LGA

Nonstop2h 25mSouthwest

Deal found 4/23$221

Wed 6/1811:25 amLGA - STL

1 stop5h 05mUnited Airlines

Sat 6/215:27 pmSTL - LGA

1 stop4h 55mUnited Airlines

Deal found 4/23$236

Wed 5/216:30 amLGA - STL

Nonstop2h 37mDelta

Wed 5/286:00 amSTL - LGA

Nonstop2h 28mDelta

Deal found 4/23$237

Thu 5/111:41 amEWR - STL

1 stop24h 50mSun Country Air

Sun 5/48:00 amSTL - EWR

1 stop25h 44mSun Country Air

Deal found 4/23$305

Fri 5/26:59 amJFK - STL

1 stop15h 06mFrontier

Mon 5/59:55 pmSTL - JFK

1 stop30h 35mFrontier

Deal found 4/23$201

Tue 6/246:00 amJFK - STL

1 stop4h 43mDelta

Wed 6/256:40 amSTL - JFK

1 stop4h 19mDelta

Deal found 4/23$241

Tue 5/273:55 pmJFK - STL

1 stop8h 56mAmerican Airlines

Fri 5/301:59 pmSTL - JFK

1 stop6h 56mAmerican Airlines

Deal found 4/22$249

Fri 5/911:50 amSWF - STL

1 stop22h 25mMultiple Airlines

Sun 5/1110:10 amSTL - SWF

1 stop23h 50mMultiple Airlines

Deal found 4/23$259

Last-minute flights to St. Charles
Discover last-minute flight deals to St. Charles. Data last updated April 24, 2025 and is based on user searches.

Mon 4/2811:25 amLGA - STL

1 stop5h 22mUnited Airlines

Wed 4/309:39 amSTL - LGA

1 stop5h 34mUnited Airlines

Deal found 4/23$323

Tue 4/297:00 amEWR - STL

1 stop6h 20mUnited Airlines

Tue 4/294:44 pmSTL - EWR

Nonstop2h 27mUnited Airlines

Deal found 4/23$285

Wed 4/306:10 pmLGA - STL

Nonstop2h 45mSouthwest

Sat 5/37:25 pmSTL - LGA

Nonstop2h 25mSouthwest

Deal found 4/22$275

Wed 4/306:30 amLGA - STL

Nonstop2h 45mDelta

Fri 5/26:08 amSTL - LGA

Nonstop2h 22mDelta

Deal found 4/23$308

Wed 4/306:00 amLGA - STL

1 stop6h 24mAmerican Airlines

Thu 5/16:13 amSTL - LGA

1 stop4h 03mAmerican Airlines

Deal found 4/23$328

Wed 4/307:10 amEWR - STL

1 stop5h 14mAmerican Airlines

Sat 5/31:48 pmSTL - EWR

1 stop5h 34mAmerican Airlines

Deal found 4/22$365

Thu 5/111:41 amEWR - STL

1 stop24h 50mSun Country Air

Sun 5/48:00 amSTL - EWR

1 stop25h 44mSun Country Air

Deal found 4/23$305

Thu 5/15:30 amEWR - STL

2 stops15h 40mMultiple Airlines

Sun 5/48:00 amSTL - EWR

1 stop25h 44mMultiple Airlines

Deal found 4/23$381

Fri 5/26:59 amJFK - STL

1 stop15h 06mFrontier

Mon 5/59:55 pmSTL - JFK

1 stop30h 35mFrontier

Deal found 4/23$201

Sat 5/310:00 pmLGA - STL

1 stop27h 06mMultiple Airlines

Sat 5/1010:10 amSTL - LGA

1 stop12h 14mMultiple Airlines

Deal found 4/23$248

Sat 5/37:59 amEWR - STL

1 stop4h 42mDelta

Tue 5/65:32 pmSTL - EWR

1 stop6h 24mDelta

Deal found 4/22$295

Sat 5/310:00 amJFK - STL

1 stop6h 06mDelta

Tue 5/65:37 pmSTL - JFK

1 stop4h 46mDelta

Deal found 4/22$295

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 24, 2025.

Wed 5/285:15 amEWR - STL

1 stop29h 00mSpirit Airlines

Deal found 4/23$91

Fri 5/911:50 amSWF - STL

1 stop22h 25mMultiple Airlines

Deal found 4/23$101

Thu 5/2910:55 pmLGA - STL

1 stop11h 14mFrontier

Deal found 4/23$105

Fri 5/96:59 amJFK - STL

1 stop15h 06mFrontier

Deal found 4/23$105

Tue 6/107:10 pmLGA - STL

Nonstop2h 45mAmerican Airlines

Deal found 4/23$111

Sat 5/247:29 pmEWR - STL

Nonstop2h 56mUnited Airlines

Deal found 4/23$111

Tue 5/272:00 pmEWR - STL

1 stop10h 51mAmerican Airlines

Deal found 4/23$114

Mon 5/263:55 pmJFK - STL

1 stop8h 56mAmerican Airlines

Deal found 4/23$114

Sat 5/247:59 pmLGA - STL

1 stop14h 16mSpirit Airlines

Deal found 4/23$116

Wed 5/215:55 amEWR - STL

2 stops30h 50mMultiple Airlines

Deal found 4/22$120

Sun 5/258:25 amLGA - STL

1 stop4h 55mUnited Airlines

Deal found 4/23$121

Tue 6/176:00 amJFK - STL

1 stop7h 35mDelta

Deal found 4/23$121

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 5/8

10:00 pm-12:14 am

1 stop27h 14m

Lambert-St Louis

Mon 5/12

5:45 pm-8:59 pm

1 stop26h 14m

$201

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Mon 5/5

6:59 am-12:06 am

1 stop18h 07m

Lambert-St Louis

Thu 5/8

9:55 pm-5:30 am

1 stop30h 35m

$201

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Tue 5/13

10:00 pm-12:06 am

1 stop27h 06m

Lambert-St Louis

Thu 5/15

10:10 am-11:24 pm

1 stop12h 14m

$206

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 5/14

5:54 am-9:15 am

2 stops28h 21m

Lambert-St Louis

Sat 5/17

10:10 am-11:24 pm

1 stop12h 14m

$212

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Tue 5/20

8:53 am-10:43 am

Nonstop2h 50m

Lambert-St Louis

Tue 5/20

1:38 pm-7:11 pm

1 stop4h 33m

$214

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 6/18

6:15 am-7:50 am

Nonstop2h 35m

Lambert-St Louis

Sat 6/21

7:05 pm-10:30 pm

Nonstop2h 25m

$221

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 6/18

11:25 am-3:30 pm

1 stop5h 05m

Lambert-St Louis

Sat 6/21

5:27 pm-11:22 pm

1 stop4h 55m

$236

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 5/21

6:30 am-8:07 am

Nonstop2h 37m

Lambert-St Louis

Wed 5/28

6:00 am-9:28 am

Nonstop2h 28m

$237

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Wed 5/28

3:55 pm-11:51 pm

1 stop8h 56m

Lambert-St Louis

Thu 5/29

5:00 am-8:00 pm

1 stop14h 00m

$238

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Tue 6/24

6:00 am-9:43 am

1 stop4h 43m

Lambert-St Louis

Wed 6/25

10:48 am-6:05 pm

1 stop6h 17m

$241

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 41 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 30 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 7 hours 53 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.

Weekly flight availability to St. Charles

The most flights from New York to St. Charles are scheduled on a Wednesday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 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.

United Airlines

From $259

Delta

From $197

American Airlines

From $198

Southwest

From $211

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

9,918 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Alaska Airlines

8.0

Very good

9,918 reviews

Alaska Airlines

8.0

Very good

9,918 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Southwest

8.0

Very good

4,286 reviews

Alaska Airlines

8.0

Very good

9,918 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Delta

8.0

Very good

7,920 reviews

Alaska Airlines

8.0

Very good

9,918 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

United Airlines

7.4

Good

8,685 reviews

Alaska Airlines

8.0

Very good

9,918 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,918 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 $284, however they can be found for as little as $59.
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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$85+ 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 5/28. 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 24, 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 24, 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 24, 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 24, 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 April 18, 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.

Weekly flight availability to St. Charles

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.

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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 24, 2025.