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 $194, however they can be found for as little as $38.

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+ Flights to St. Charles

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Flights to St. Charles in 2025

Popular in	December
Cheapest in	January
Average price	$350
Round-trip from	$181
One-way from	$60

Highest demand for flights based on searches. 8% potential increase in price ($31 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 July 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 July 31, 2025.

Fri 8/1510:00 amEWR - STL

1 stop4h 32mSpirit Airlines

Mon 8/182:30 pmSTL - EWR

1 stop5h 30mSpirit Airlines

Deal found 7/29$181

Fri 9/267:15 amLGA - STL

1 stop7h 10mSouthwest

Sun 9/286:20 amSTL - LGA

Nonstop2h 25mSouthwest

Deal found 7/30$207

Fri 9/129:48 pmEWR - STL

Nonstop2h 56mUnited Airlines

Sun 9/145:30 pmSTL - EWR

1 stop6h 00mUnited Airlines

Deal found 7/29$207

Wed 10/16:00 amJFK - STL

1 stop7h 21mDelta

Mon 10/64:10 pmSTL - JFK

Nonstop2h 47mDelta

Deal found 7/30$207

Wed 9/102:11 pmLGA - STL

1 stop8h 42mAmerican Airlines

Mon 9/1510:15 amSTL - LGA

Nonstop2h 28mAmerican Airlines

Deal found 7/30$212

Thu 8/146:35 amLGA - STL

1 stop7h 57mSpirit Airlines

Fri 8/152:30 pmSTL - LGA

1 stop19h 38mSpirit Airlines

Deal found 7/31$215

Thu 9/1811:59 amJFK - STL

1 stop4h 47mAmerican Airlines

Mon 9/228:23 amSTL - JFK

1 stop5h 07mAmerican Airlines

Deal found 7/29$216

Wed 8/279:20 amLGA - STL

Nonstop2h 50mDelta

Wed 9/33:10 pmSTL - LGA

Nonstop2h 33mDelta

Deal found 7/30$217

Fri 10/316:00 amEWR - STL

1 stop4h 37mDelta

Mon 11/35:15 pmSTL - EWR

1 stop6h 44mDelta

Deal found 7/29$217

Tue 8/1210:55 pmLGA - STL

1 stop11h 16mFrontier

Sat 8/162:52 pmSTL - LGA

1 stop7h 40mFrontier

Deal found 7/31$218

Thu 9/185:55 amEWR - STL

1 stop10h 09mFrontier

Sun 9/214:00 pmSTL - EWR

1 stop7h 34mFrontier

Deal found 7/31$218

Sat 8/309:00 amJFK - STL

1 stop5h 33mFrontier

Sat 9/64:58 pmSTL - JFK

1 stop11h 32mFrontier

Deal found 7/31$218

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 July 31, 2025.

Fri 8/1510:00 amEWR - STL

1 stop4h 32mSpirit Airlines

Mon 8/182:30 pmSTL - EWR

1 stop5h 30mSpirit Airlines

Deal found 7/29$181

Fri 9/267:15 amLGA - STL

1 stop7h 10mSouthwest

Sun 9/286:20 amSTL - LGA

Nonstop2h 25mSouthwest

Deal found 7/30$207

Fri 9/129:48 pmEWR - STL

Nonstop2h 56mUnited Airlines

Sun 9/145:30 pmSTL - EWR

1 stop6h 00mUnited Airlines

Deal found 7/29$207

Wed 10/12:55 pmJFK - STL

Nonstop2h 53mDelta

Sat 10/45:27 pmSTL - JFK

1 stop5h 12mDelta

Deal found 7/30$207

Wed 9/101:01 pmLGA - STL

Nonstop2h 43mAmerican Airlines

Sat 9/137:23 amSTL - LGA

1 stop7h 51mAmerican Airlines

Deal found 7/30$212

Tue 8/1210:55 pmLGA - STL

1 stop11h 16mFrontier

Sat 8/162:52 pmSTL - LGA

1 stop7h 40mFrontier

Deal found 7/31$218

Fri 9/510:56 pmLGA - STL

1 stop11h 10mMultiple Airlines

Sun 9/712:05 pmSTL - LGA

1 stop5h 59mMultiple Airlines

Deal found 7/29$219

Thu 8/146:35 amLGA - STL

1 stop7h 57mSpirit Airlines

Fri 8/152:30 pmSTL - LGA

1 stop19h 38mSpirit Airlines

Deal found 7/31$215

Thu 9/1811:59 amJFK - STL

1 stop4h 47mAmerican Airlines

Mon 9/228:23 amSTL - JFK

1 stop5h 07mAmerican Airlines

Deal found 7/29$216

Wed 8/279:20 amLGA - STL

Nonstop2h 50mDelta

Wed 9/33:10 pmSTL - LGA

Nonstop2h 33mDelta

Deal found 7/30$217

Thu 9/185:55 amEWR - STL

1 stop10h 09mFrontier

Mon 9/224:00 pmSTL - EWR

1 stop7h 34mFrontier

Deal found 7/30$218

Fri 10/318:05 amEWR - STL

1 stop7h 38mDelta

Tue 11/43:59 pmSTL - EWR

1 stop6h 57mDelta

Deal found 7/29$217

Last-minute flights to St. Charles
Discover last-minute flight deals to St. Charles. Data last updated July 31, 2025 and is based on user searches.

Tue 8/510:55 pmLGA - STL

1 stop11h 16mFrontier

Wed 8/67:29 pmSTL - LGA

1 stop25h 40mFrontier

Deal found 7/29$235

Tue 8/57:55 amLGA - STL

1 stop7h 20mSouthwest

Wed 8/67:35 pmSTL - LGA

Nonstop2h 25mSouthwest

Deal found 7/29$305

Tue 8/56:00 amEWR - STL

1 stop4h 41mDelta

Wed 8/610:46 amSTL - EWR

1 stop5h 08mDelta

Deal found 7/31$315

Tue 8/56:30 amLGA - STL

Nonstop2h 40mDelta

Sun 8/103:16 pmSTL - LGA

Nonstop2h 31mDelta

Deal found 7/29$333

Wed 8/66:15 amJFK - STL

1 stop4h 25mAmerican Airlines

Sat 8/91:15 pmSTL - JFK

1 stop5h 14mAmerican Airlines

Deal found 7/30$315

Thu 8/76:05 amEWR - STL

1 stop4h 47mSpirit Airlines

Thu 8/142:30 pmSTL - EWR

1 stop5h 30mSpirit Airlines

Deal found 7/29$197

Thu 8/75:59 amLGA - STL

1 stop4h 53mSpirit Airlines

Sat 8/93:34 pmSTL - LGA

1 stop6h 52mSpirit Airlines

Deal found 7/30$220

Thu 8/75:59 amEWR - STL

1 stop8h 35mFrontier

Sun 8/102:36 pmSTL - EWR

1 stop9h 02mFrontier

Deal found 7/29$228

Thu 8/79:00 amJFK - STL

1 stop5h 34mFrontier

Sat 8/303:02 pmSTL - JFK

1 stop8h 54mFrontier

Deal found 7/30$228

Thu 8/75:59 amLGA - STL

1 stop4h 53mMultiple Airlines

Mon 8/117:29 pmSTL - LGA

1 stop25h 40mMultiple Airlines

Deal found 7/29$248

Thu 8/76:57 amLGA - STL

Nonstop2h 46mAmerican Airlines

Tue 9/29:13 amSTL - LGA

Nonstop2h 30mAmerican Airlines

Deal found 7/30$294

Thu 8/76:15 amEWR - STL

3 stops13h 26mMultiple Airlines

Thu 8/142:30 pmSTL - EWR

1 stop5h 30mMultiple Airlines

Deal found 7/29$299

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 July 31, 2025.

Mon 8/2510:00 amEWR - STL

1 stop4h 32mSpirit Airlines

Deal found 7/29$60

Wed 9/109:48 pmEWR - STL

Nonstop2h 56mUnited Airlines

Deal found 7/29$99

Sat 8/305:55 amEWR - STL

1 stop8h 38mFrontier

Deal found 7/31$105

Tue 9/96:00 amEWR - STL

1 stop4h 32mDelta

Deal found 7/29$109

Sat 10/1110:59 amLGA - STL

1 stop7h 56mSpirit Airlines

Deal found 7/29$111

Sun 8/316:59 amJFK - STL

1 stop7h 08mFrontier

Deal found 7/29$113

Tue 9/25:45 amLGA - STL

1 stop8h 09mAmerican Airlines

Deal found 7/30$114

Wed 9/37:30 amJFK - STL

1 stop9h 22mAmerican Airlines

Deal found 7/30$114

Sat 10/118:46 pmLGA - STL

1 stop13h 06mFrontier

Deal found 7/30$115

Tue 9/27:00 pmEWR - STL

1 stop5h 05mAmerican Airlines

Deal found 7/31$119

Wed 8/271:30 pmJFK - STL

1 stop6h 37mDelta

Deal found 7/29$119

Thu 11/276:15 amLGA - STL

Nonstop2h 50mSouthwest

Deal found 7/30$121

Fly from

Route

Depart

Return

Price

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Fri 8/15

10:00 am-1:32 pm

1 stop4h 32m

Lambert-St Louis

Mon 8/18

2:30 pm-9:00 pm

1 stop5h 30m

$181

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Fri 9/26

7:15 am-1:25 pm

1 stop7h 10m

Lambert-St Louis

Sun 9/28

6:20 am-9:45 am

Nonstop2h 25m

$207

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Fri 9/12

9:48 pm-11:44 pm

Nonstop2h 56m

Lambert-St Louis

Sun 9/14

5:30 pm-12:30 am

1 stop6h 00m

$207

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Wed 10/1

2:55 pm-4:48 pm

Nonstop2h 53m

Lambert-St Louis

Sat 10/4

5:27 pm-11:39 pm

1 stop5h 12m

$207

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 9/10

1:01 pm-2:44 pm

Nonstop2h 43m

Lambert-St Louis

Sat 9/13

7:23 am-4:14 pm

1 stop7h 51m

$212

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Thu 8/14

6:35 am-1:32 pm

1 stop7h 57m

Lambert-St Louis

Fri 8/15

2:30 pm-11:08 am

1 stop19h 38m

$215

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Thu 9/18

11:59 am-3:46 pm

1 stop4h 47m

Lambert-St Louis

Mon 9/22

8:23 am-2:30 pm

1 stop5h 07m

$216

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 8/27

9:20 am-11:10 am

Nonstop2h 50m

Lambert-St Louis

Wed 9/3

3:10 pm-6:43 pm

Nonstop2h 33m

$217

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Fri 10/31

8:05 am-2:43 pm

1 stop7h 38m

Lambert-St Louis

Tue 11/4

3:59 pm-11:56 pm

1 stop6h 57m

$217

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Tue 8/12

10:55 pm-9:11 am

1 stop11h 16m

Lambert-St Louis

Sat 8/16

2:52 pm-11:32 pm

1 stop7h 40m

$218

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 33 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 56 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 12 hours 54 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 Saturday at noon, when prices are typically cheapest. Budget-minded travelers will want to avoid Sunday evenings, 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.

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

Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta 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.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Southwest

8.0

Very good

4,246 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Delta

8.0

Very good

7,981 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

United Airlines

7.4

Good

8,900 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 $194, however they can be found for as little as $38.
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 8/25. 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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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 July 31, 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 July 31, 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 July 31, 2025.

Cheapflights Fare Finder

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 July 25, 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

Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta 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.

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 July 31, 2025.