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, 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 $230, however they can be found for as little as $48.

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 5 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).

$63+ Flights to St. Charles

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Flights to St. Charles in 2025

Popular in	December
Cheapest in	January
Average price	$317
Round-trip from	$236
One-way from	$63

Highest demand for flights based on searches. 8% potential increase in price ($29 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 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 June 12, 2025.

Sun 7/135:59 amLGA - STL

1 stop4h 53mSpirit Airlines

Sat 7/1910:45 amSTL - LGA

1 stop11h 26mSpirit Airlines

Deal found 6/11$236

Tue 7/291:29 pmLGA - STL

Nonstop2h 49mDelta

Tue 8/59:16 amSTL - LGA

Nonstop2h 28mDelta

Deal found 6/10$237

Fri 7/115:23 pmEWR - STL

1 stop22h 16mSpirit Airlines

Sun 7/1310:47 amSTL - EWR

2 stops22h 43mSpirit Airlines

Deal found 6/11$237

Wed 7/210:00 pmLGA - STL

1 stop22h 24mMultiple Airlines

Wed 7/911:24 amSTL - LGA

1 stop10h 47mMultiple Airlines

Deal found 6/11$239

Tue 7/15:00 amEWR - STL

2 stops32h 10mMultiple Airlines

Mon 7/1410:47 amSTL - EWR

1 stop8h 13mMultiple Airlines

Deal found 6/11$239

Wed 7/1611:40 amJFK - STL

1 stop7h 13mAmerican Airlines

Mon 8/45:15 amSTL - JFK

1 stop7h 24mAmerican Airlines

Deal found 6/10$239

Fri 7/257:56 pmSWF - STL

1 stop19h 43mMultiple Airlines

Sun 7/2710:47 amSTL - SWF

2 stops31h 19mMultiple Airlines

Deal found 6/10$241

Thu 7/176:20 amJFK - STL

1 stop8h 14mFrontier

Sat 7/192:52 pmSTL - JFK

1 stop8h 50mFrontier

Deal found 6/10$241

Wed 8/138:00 amJFK - STL

1 stop5h 31mDelta

Tue 8/1911:02 amSTL - JFK

1 stop7h 33mDelta

Deal found 6/11$242

Fri 8/2911:00 amEWR - STL

1 stop27h 33mFrontier

Mon 9/11:26 pmSTL - EWR

1 stop19h 42mFrontier

Deal found 6/11$244

Wed 8/203:45 pmLGA - STL

Nonstop2h 45mSouthwest

Sun 8/246:20 amSTL - LGA

Nonstop2h 25mSouthwest

Deal found 6/10$245

Tue 6/172:11 pmLGA - STL

1 stop7h 19mAmerican Airlines

Mon 8/182:45 pmSTL - LGA

Nonstop2h 30mAmerican Airlines

Deal found 6/11$256

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 June 12, 2025.

Fri 7/115:59 amLGA - STL

1 stop4h 53mSpirit Airlines

Sun 7/1310:47 amSTL - LGA

1 stop7h 13mSpirit Airlines

Deal found 6/12$236

Tue 7/291:29 pmLGA - STL

Nonstop2h 49mDelta

Tue 8/59:16 amSTL - LGA

Nonstop2h 28mDelta

Deal found 6/10$237

Tue 7/15:00 amEWR - STL

2 stops32h 10mMultiple Airlines

Mon 7/1410:47 amSTL - EWR

1 stop8h 13mMultiple Airlines

Deal found 6/11$239

Wed 7/1611:40 amJFK - STL

1 stop7h 13mAmerican Airlines

Mon 8/45:15 amSTL - JFK

1 stop7h 24mAmerican Airlines

Deal found 6/10$239

Sat 7/127:45 amLGA - STL

Nonstop2h 40mSouthwest

Tue 7/298:00 pmSTL - LGA

Nonstop2h 25mSouthwest

Deal found 6/9$241

Thu 7/176:20 amJFK - STL

1 stop8h 14mFrontier

Sat 7/192:52 pmSTL - JFK

1 stop8h 50mFrontier

Deal found 6/10$241

Fri 7/49:00 amEWR - STL

Nonstop2h 47mUnited Airlines

Fri 7/45:20 pmSTL - EWR

Nonstop2h 35mUnited Airlines

Deal found 6/11$261

Sat 7/125:45 amEWR - STL

1 stop9h 54mSpirit Airlines

Sun 7/1310:47 amSTL - EWR

2 stops22h 43mSpirit Airlines

Deal found 6/12$237

Fri 7/257:56 pmSWF - STL

1 stop19h 43mMultiple Airlines

Sun 7/2710:47 amSTL - SWF

2 stops31h 19mMultiple Airlines

Deal found 6/10$241

Wed 8/136:00 amJFK - STL

1 stop4h 57mDelta

Wed 8/2011:02 amSTL - JFK

1 stop7h 33mDelta

Deal found 6/11$242

Fri 8/2911:00 amEWR - STL

1 stop27h 33mFrontier

Mon 9/11:26 pmSTL - EWR

1 stop19h 42mFrontier

Deal found 6/11$244

Tue 6/172:11 pmLGA - STL

1 stop7h 19mAmerican Airlines

Mon 8/182:45 pmSTL - LGA

Nonstop2h 30mAmerican Airlines

Deal found 6/11$256

Last-minute flights to St. Charles
Discover last-minute flight deals to St. Charles. Data last updated June 12, 2025 and is based on user searches.

Tue 6/177:10 pmLGA - STL

Nonstop2h 45mAmerican Airlines

Mon 8/186:01 amSTL - LGA

Nonstop2h 30mAmerican Airlines

Deal found 6/11$246

Tue 6/177:29 pmEWR - STL

1 stop5h 30mAmerican Airlines

Mon 8/186:26 amSTL - EWR

1 stop5h 10mAmerican Airlines

Deal found 6/11$266

Tue 6/176:59 amJFK - STL

1 stop17h 54mFrontier

Sat 6/212:52 pmSTL - JFK

1 stop8h 52mFrontier

Deal found 6/9$270

Tue 6/174:35 pmLGA - STL

1 stop5h 25mSouthwest

Mon 8/185:15 amSTL - LGA

1 stop7h 00mSouthwest

Deal found 6/11$286

Tue 6/1711:59 amJFK - STL

1 stop4h 55mAmerican Airlines

Mon 8/188:40 amSTL - JFK

1 stop4h 50mAmerican Airlines

Deal found 6/11$291

Tue 6/177:29 pmEWR - STL

Nonstop2h 56mUnited Airlines

Sat 6/217:00 amSTL - EWR

Nonstop2h 33mUnited Airlines

Deal found 6/9$295

Tue 6/172:11 pmLGA - STL

1 stop7h 19mAmerican Airlines

Mon 8/182:45 pmSTL - LGA

Nonstop2h 30mAmerican Airlines

Deal found 6/11$256

Wed 6/186:00 amEWR - STL

1 stop4h 43mDelta

Wed 6/256:00 amSTL - EWR

1 stop7h 24mDelta

Deal found 6/10$315

Thu 6/194:10 pmLGA - STL

Nonstop2h 55mDelta

Wed 6/256:00 amSTL - LGA

Nonstop2h 27mDelta

Deal found 6/10$333

Fri 6/2010:55 pmLGA - STL

1 stop11h 17mMultiple Airlines

Mon 6/237:13 pmSTL - LGA

1 stop15h 59mMultiple Airlines

Deal found 6/10$245

Fri 6/2011:00 amEWR - STL

1 stop7h 04mSpirit Airlines

Thu 6/266:36 pmSTL - EWR

1 stop22h 01mSpirit Airlines

Deal found 6/11$283

Fri 6/206:53 amEWR - STL

2 stops12h 48mMultiple Airlines

Thu 6/266:36 pmSTL - EWR

1 stop20h 24mMultiple Airlines

Deal found 6/11$312

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 June 12, 2025.

Thu 7/176:05 amEWR - STL

1 stop4h 47mSpirit Airlines

Deal found 6/10$63

Wed 9/39:48 pmEWR - STL

Nonstop2h 56mUnited Airlines

Deal found 6/10$99

Mon 8/117:56 pmSWF - STL

1 stop21h 35mMultiple Airlines

Deal found 6/11$106

Wed 8/271:30 pmEWR - STL

1 stop4h 26mAmerican Airlines

Deal found 6/12$109

Fri 7/255:59 amLGA - STL

1 stop4h 53mSpirit Airlines

Deal found 6/10$111

Wed 8/2010:50 pmLGA - STL

1 stop11h 21mFrontier

Deal found 6/12$113

Wed 9/1010:55 amLGA - STL

2 stops7h 55mSouthwest

Deal found 6/11$114

Sat 8/306:00 amJFK - STL

1 stop8h 33mFrontier

Deal found 6/12$116

Mon 8/116:30 amLGA - STL

Nonstop2h 36mDelta

Deal found 6/11$124

Sat 9/67:30 amJFK - STL

1 stop8h 54mAmerican Airlines

Deal found 6/12$124

Mon 8/114:00 pmLGA - STL

1 stop5h 18mAmerican Airlines

Deal found 6/12$134

Sat 8/238:00 amJFK - STL

1 stop7h 28mDelta

Deal found 6/10$134

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

Sun 7/13

5:59 am-9:52 am

1 stop4h 53m

Lambert-St Louis

Sat 7/19

10:45 am-11:11 pm

1 stop11h 26m

$236

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Tue 7/29

6:59 pm-8:57 pm

Nonstop2h 58m

Lambert-St Louis

Mon 8/4

9:16 am-12:44 pm

Nonstop2h 28m

$237

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Fri 7/11

5:23 pm-2:39 pm

1 stop22h 16m

Lambert-St Louis

Sun 7/13

10:47 am-10:30 am

2 stops22h 43m

$237

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 7/2

10:00 pm-7:24 pm

1 stop22h 24m

Lambert-St Louis

Wed 7/9

11:24 am-11:11 pm

1 stop10h 47m

$239

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Wed 7/16

11:40 am-5:53 pm

1 stop7h 13m

Lambert-St Louis

Mon 8/4

5:15 am-1:39 pm

1 stop7h 24m

$239

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Tue 7/1

5:00 am-12:10 pm

2 stops32h 10m

Lambert-St Louis

Mon 7/14

10:47 am-8:00 pm

1 stop8h 13m

$239

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Thu 7/17

6:20 am-1:34 pm

1 stop8h 14m

Lambert-St Louis

Sat 7/19

2:52 pm-12:42 am

1 stop8h 50m

$241

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Fri 7/25

7:56 pm-2:39 pm

1 stop19h 43m

Lambert-St Louis

Sun 7/27

10:47 am-7:06 pm

2 stops31h 19m

$241

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Wed 8/13

8:00 am-12:31 pm

1 stop5h 31m

Lambert-St Louis

Tue 8/19

11:02 am-7:35 pm

1 stop7h 33m

$242

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Fri 8/29

11:00 am-1:33 pm

1 stop27h 33m

Lambert-St Louis

Mon 9/1

1:26 pm-10:08 am

1 stop19h 42m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 36 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 86 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 6 hours 56 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 evenings, 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 Monday (21 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 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.

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

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Southwest

8.0

Very good

4,287 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

8.0

Very good

7,946 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,790 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $230, however they can be found for as little as $48.
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 5 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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$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 7/17. 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

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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 June 12, 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 June 12, 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 June 12, 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 June 12, 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 June 9, 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.

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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 June 12, 2025.