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 $280, however they can be found for as little as $37.

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).

$60+ Save on Flights to St. Charles

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Flights to St. Charles in 2025

Popular in	December
Cheapest in	January
Average price	$311
Round-trip from	$183
One-way from	$60

Highest demand for flights based on searches. 5% potential increase in price ($20 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 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 March 3, 2025.

Fri 4/46:00 amJFK - STL

1 stop18h 46mFrontier

Mon 4/74:57 pmSTL - JFK

1 stop6h 46mFrontier

Deal found 3/2$183

Thu 4/34:50 pmLGA - STL

1 stop6h 05mSouthwest

Mon 4/75:40 pmSTL - LGA

Nonstop2h 20mSouthwest

Deal found 3/3$187

Fri 4/411:30 amLGA - STL

1 stop13h 16mFrontier

Sun 4/64:57 pmSTL - LGA

1 stop16h 33mFrontier

Deal found 3/3$190

Sun 5/1110:00 pmLGA - STL

1 stop27h 06mMultiple Airlines

Tue 5/137:37 pmSTL - LGA

1 stop12h 23mMultiple Airlines

Deal found 3/2$191

Fri 4/46:59 pmLGA - STL

Nonstop2h 52mDelta

Mon 4/76:35 pmSTL - LGA

Nonstop2h 23mDelta

Deal found 3/3$197

Tue 4/19:00 amJFK - STL

1 stop5h 51mAmerican Airlines

Wed 4/235:00 amSTL - JFK

1 stop4h 30mAmerican Airlines

Deal found 3/2$197

Thu 4/1011:25 amLGA - STL

1 stop5h 22mUnited Airlines

Sat 4/129:39 amSTL - LGA

1 stop6h 36mUnited Airlines

Deal found 3/2$212

Wed 3/266:00 amJFK - STL

1 stop7h 00mDelta

Sat 3/294:29 pmSTL - JFK

1 stop7h 18mDelta

Deal found 3/3$217

Wed 3/269:30 amLGA - STL

Nonstop2h 53mAmerican Airlines

Sat 4/265:00 amSTL - LGA

1 stop4h 44mAmerican Airlines

Deal found 3/3$227

Thu 5/156:30 amLGA - STL

1 stop13h 02mSpirit Airlines

Sun 5/187:37 pmSTL - LGA

1 stop12h 23mSpirit Airlines

Deal found 3/2$255

Sun 3/166:00 amEWR - STL

2 stops11h 45mMultiple Airlines

Tue 3/185:38 pmSTL - EWR

1 stop16h 37mMultiple Airlines

Deal found 3/1$264

Thu 4/32:00 pmEWR - STL

Nonstop2h 48mUnited Airlines

Tue 4/84:44 pmSTL - EWR

Nonstop2h 27mUnited Airlines

Deal found 3/2$266

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 March 3, 2025.

Fri 4/46:00 amJFK - STL

1 stop18h 46mFrontier

Mon 4/74:57 pmSTL - JFK

1 stop6h 46mFrontier

Deal found 3/2$183

Thu 4/310:25 amLGA - STL

Nonstop2h 55mSouthwest

Mon 4/75:55 amSTL - LGA

1 stop4h 45mSouthwest

Deal found 3/3$187

Sun 5/1110:00 pmLGA - STL

1 stop27h 06mMultiple Airlines

Tue 5/137:37 pmSTL - LGA

1 stop12h 23mMultiple Airlines

Deal found 3/2$191

Fri 4/46:59 pmLGA - STL

Nonstop2h 52mDelta

Mon 4/76:35 pmSTL - LGA

Nonstop2h 23mDelta

Deal found 3/3$197

Tue 4/19:00 amJFK - STL

1 stop5h 51mAmerican Airlines

Wed 4/235:00 amSTL - JFK

1 stop4h 30mAmerican Airlines

Deal found 3/2$197

Thu 4/1011:25 amLGA - STL

1 stop5h 22mUnited Airlines

Sat 4/129:39 amSTL - LGA

1 stop6h 36mUnited Airlines

Deal found 3/2$212

Tue 3/186:00 amLGA - STL

1 stop11h 42mSpirit Airlines

Sun 3/236:47 pmSTL - LGA

2 stops23h 13mSpirit Airlines

Deal found 3/2$241

Fri 4/411:30 amLGA - STL

1 stop13h 16mFrontier

Sun 4/64:57 pmSTL - LGA

1 stop16h 33mFrontier

Deal found 3/3$190

Wed 3/266:00 amJFK - STL

1 stop7h 00mDelta

Sat 3/294:29 pmSTL - JFK

1 stop7h 18mDelta

Deal found 3/3$217

Wed 3/269:30 amLGA - STL

Nonstop2h 53mAmerican Airlines

Sat 4/265:00 amSTL - LGA

1 stop4h 44mAmerican Airlines

Deal found 3/3$227

Mon 3/318:07 pmJFK - STL

2 stops28h 52mAlaska Airlines

Wed 4/26:44 amSTL - JFK

1 stop22h 16mAlaska Airlines

Deal found 3/2$518

Sun 3/166:00 amEWR - STL

2 stops11h 45mMultiple Airlines

Tue 3/185:38 pmSTL - EWR

1 stop16h 37mMultiple Airlines

Deal found 3/1$264

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

Sat 3/85:59 pmLGA - STL

1 stop6h 50mFrontier

Mon 3/105:24 pmSTL - LGA

1 stop15h 36mFrontier

Deal found 3/1$244

Sat 3/81:02 pmEWR - STL

2 stops29h 39mMultiple Airlines

Mon 3/106:30 amSTL - EWR

2 stops31h 20mMultiple Airlines

Deal found 3/1$273

Sat 3/811:28 amLGA - STL

Nonstop2h 59mAmerican Airlines

Sat 3/86:32 pmSTL - LGA

1 stop4h 13mAmerican Airlines

Deal found 3/3$285

Sat 3/81:10 pmEWR - STL

1 stop5h 51mDelta

Tue 3/1110:30 amSTL - EWR

1 stop4h 15mDelta

Deal found 3/2$295

Sat 3/86:00 amJFK - STL

1 stop6h 46mDelta

Sat 3/84:40 pmSTL - JFK

1 stop7h 06mDelta

Deal found 3/3$295

Sat 3/83:25 pmLGA - STL

2 stops25h 17mMultiple Airlines

Mon 3/106:30 amSTL - LGA

2 stops35h 30mMultiple Airlines

Deal found 3/1$307

Mon 3/104:00 pmLGA - STL

Nonstop2h 51mDelta

Wed 3/123:36 pmSTL - LGA

Nonstop2h 28mDelta

Deal found 3/3$308

Wed 3/122:50 pmEWR - STL

Nonstop3h 02mUnited Airlines

Tue 3/185:33 pmSTL - EWR

Nonstop2h 26mUnited Airlines

Deal found 3/2$296

Wed 3/127:15 amLGA - STL

Nonstop2h 55mSouthwest

Sat 3/1510:00 pmSTL - LGA

1 stop10h 10mSouthwest

Deal found 3/1$302

Wed 3/1211:56 amLGA - STL

2 stops29h 46mSpirit Airlines

Sat 3/1510:24 amSTL - LGA

1 stop11h 35mSpirit Airlines

Deal found 3/1$375

Thu 3/137:59 amJFK - STL

1 stop10h 46mFrontier

Mon 3/176:55 pmSTL - JFK

1 stop10h 35mFrontier

Deal found 3/2$207

Thu 3/135:14 pmEWR - STL

1 stop7h 42mAmerican Airlines

Tue 3/184:26 pmSTL - EWR

1 stop4h 26mAmerican Airlines

Deal found 3/2$279

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 March 3, 2025.

Sat 5/109:00 amEWR - STL

1 stop10h 32mSpirit Airlines

Deal found 3/2$60

Wed 4/212:59 pmLGA - STL

Nonstop2h 50mDelta

Deal found 3/3$89

Thu 4/310:00 pmLGA - STL

1 stop26h 46mFrontier

Deal found 3/3$91

Mon 3/171:01 pmJFK - STL

1 stop11h 48mFrontier

Deal found 3/3$91

Thu 4/246:00 amLGA - STL

1 stop12h 15mSpirit Airlines

Deal found 3/2$92

Wed 4/911:25 amLGA - STL

1 stop5h 22mUnited Airlines

Deal found 3/3$94

Wed 3/266:00 amEWR - STL

1 stop7h 00mDelta

Deal found 3/2$99

Tue 5/278:05 amJFK - STL

1 stop7h 30mDelta

Deal found 3/3$99

Mon 3/1011:56 amLGA - STL

1 stop12h 53mMultiple Airlines

Deal found 3/2$106

Fri 5/26:45 pmLGA - STL

Nonstop2h 45mSouthwest

Deal found 3/2$109

Wed 3/197:20 pmEWR - STL

2 stops24h 21mMultiple Airlines

Deal found 3/2$114

Sat 3/158:04 amEWR - STL

1 stop5h 56mAmerican Airlines

Deal found 3/1$119

Find flights to St. Charles within your budget

Fly from

Route

Depart

Return

Price

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Fri 4/4

6:00 am-11:46 pm

1 stop18h 46m

Lambert-St Louis

Mon 4/7

4:57 pm-12:43 am

1 stop6h 46m

$183

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Thu 4/3

10:25 am-12:20 pm

Nonstop2h 55m

Lambert-St Louis

Mon 4/7

5:55 am-11:40 am

1 stop4h 45m

$187

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Fri 4/4

11:30 am-11:46 pm

1 stop13h 16m

Lambert-St Louis

Sun 4/6

4:57 pm-10:30 am

1 stop16h 33m

$190

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Sun 5/11

10:00 pm-12:06 am

1 stop27h 06m

Lambert-St Louis

Tue 5/13

7:37 pm-9:00 am

1 stop12h 23m

$191

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Fri 4/4

4:00 pm-5:49 pm

Nonstop2h 49m

Lambert-St Louis

Mon 4/7

6:35 pm-9:58 pm

Nonstop2h 23m

$197

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Tue 4/1

9:00 am-1:51 pm

1 stop5h 51m

Lambert-St Louis

Wed 4/23

5:00 am-10:30 am

1 stop4h 30m

$197

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Thu 4/10

11:25 am-3:47 pm

1 stop5h 22m

Lambert-St Louis

Sat 4/12

9:39 am-5:15 pm

1 stop6h 36m

$212

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Wed 3/26

6:00 am-12:00 pm

1 stop7h 00m

Lambert-St Louis

Sat 3/29

4:29 pm-12:47 am

1 stop7h 18m

$217

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 3/26

9:30 am-11:23 am

Nonstop2h 53m

Lambert-St Louis

Sat 4/26

5:00 am-10:44 am

1 stop4h 44m

$227

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Thu 5/15

6:30 am-6:32 pm

1 stop13h 02m

Lambert-St Louis

Sun 5/18

7:37 pm-9:00 am

1 stop12h 23m

$255

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 39 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.

Travel insights for flights to St. Charles

Get recent, data-driven insights about flights to St. Charles including ideal travel times, pricing trends, and more.

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

The best time to book flights to St. Charles is 52 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 30 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 Tuesday 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 Friday (19 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 $260

Delta

From $199

American Airlines

From $206

Southwest

From $220

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

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

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 Southwest, Alaska Airlines 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.

Southwest

8.1

Very good

4,333 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest

8.1

Very good

4,333 reviews

Southwest

8.1

Very good

4,333 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Alaska Airlines

8.0

Very good

9,710 reviews

Southwest

8.1

Very good

4,333 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta

8.0

Very good

8,068 reviews

Southwest

8.1

Very good

4,333 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines

7.4

Good

8,679 reviews

Southwest

8.1

Very good

4,333 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.1

Very good

4,333 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 $280, however they can be found for as little as $37.
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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$60+ 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 5/10. 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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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 March 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 March 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 March 3, 2025.

Find flights to St. Charles within your budget

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 March 3, 2025.

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.

Travel insights for flights to St. Charles

Get recent, data-driven insights about flights to St. Charles including ideal travel times, pricing trends, and more.

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 February 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.

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 Southwest, Alaska Airlines 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.

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 March 3, 2025.