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St. Charles

$128+ Cheap flights from Boston (BOS) to St. Charles, MO

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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — STL
nov. 26 — dic. 31
mar. 11/26
mar. 12/3
1 adult, Economy
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The best prices from Boston Logan Intl to St. Charles are usually found in February or September, booked 63 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

Cheap flight deals from Boston to St. Charles

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to St. Charles (CH5). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 21, 2024.

Popular in

March

Cheapest in

February

Round-trip from

$226
(Delta)

One-way from

$128
(Delta)
High demand for flights, 11% potential price rise
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Best time to find cheap flights, 16% potential price drop
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From Boston Logan Intl to St. Charles
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One-way flight from Boston Logan Intl to St. Charles
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Find flight deals from Boston to St. Charles

Cheapest flights from Boston to St. Charles
Explore the most affordable flight options available from Boston to St. Charles. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 21, 2024.

This Delta deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/115:10 amBOS - STL
1 stop5h 25mDelta
lun. 12/167:15 amSTL - BOS
1 stop5h 50mDelta
Deal found 11/19$226
This Mytrip deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/1110:34 amBOS - STL
3 stops31h 11mMultiple Airlines
sáb. 12/144:26 pmSTL - BOS
1 stop7h 12mMultiple Airlines
Deal found 11/20$232
This CheapOair deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/196:00 amBOS - STL
1 stop27h 47mFrontier
dom. 12/298:40 pmSTL - BOS
1 stop13h 15mFrontier
Deal found 11/21$233
This FlightHub deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/310:29 amBOS - STL
1 stop6h 57mSpirit Airlines
dom. 12/84:26 pmSTL - BOS
1 stop15h 48mSpirit Airlines
Deal found 11/20$255
This United Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/45:45 amBOS - STL
1 stop5h 31mUnited Airlines
mié. 12/1111:20 amSTL - BOS
1 stop4h 56mUnited Airlines
Deal found 11/20$296
This American Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/162:26 pmBOS - STL
1 stop8h 39mAmerican Airlines
mar. 1/141:30 pmSTL - BOS
Nonstop2h 40mAmerican Airlines
Deal found 11/20$325
This Southwest deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/108:00 amBOS - STL
Nonstop3h 10mSouthwest
jue. 12/198:25 pmSTL - BOS
Nonstop2h 30mSouthwest
Deal found 11/19$344

Find flights from Boston to St. Charles within your budget

Customize your flight search to find flights from Boston to St. Charles that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,629,791 searches. Data last updated noviembre 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

mié. 12/11

5:10 am-9:35 am

1 stop5h 25m

Lambert-St Louis

lun. 12/16

7:15 am-2:05 pm

1 stop5h 50m

$226

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

lun. 1/13

6:31 am-10:47 am

1 stop5h 16m

Lambert-St Louis

mar. 1/14

1:02 pm-8:46 pm

2 stops6h 44m

$231

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

mié. 12/11

10:34 am-4:45 pm

3 stops31h 11m

Lambert-St Louis

sáb. 12/14

4:26 pm-12:38 am

1 stop7h 12m

$232

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

jue. 12/19

6:00 am-8:47 am

1 stop27h 47m

Lambert-St Louis

dom. 12/29

8:40 pm-10:55 am

1 stop13h 15m

$233

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

lun. 2/3

6:30 pm-2:43 pm

2 stops21h 13m

Lambert-St Louis

dom. 2/9

3:48 pm-11:32 pm

1 stop6h 44m

$240

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

vie. 1/17

10:38 am-1:00 pm

Nonstop3h 22m

Lambert-St Louis

vie. 1/17

3:10 pm-11:44 pm

1 stop7h 34m

$262

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

mar. 12/10

8:00 am-10:10 am

Nonstop3h 10m

Lambert-St Louis

jue. 12/19

8:25 pm-11:55 pm

Nonstop2h 30m

$344

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

mar. 12/24

5:00 pm-9:43 pm

1 stop5h 43m

$128

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

mié. 1/8

5:00 am-11:45 am

3 stops31h 45m

$132

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

vie. 12/6

9:10 pm-3:21 pm

2 stops19h 11m

$134

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 15 results
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Best time to book a flight from Boston to St. Charles

Have a flexible travel schedule? Discover the best time to fly to St. Charles from Boston 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 from Boston to St. Charles

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

How far ahead should I book a flight from Boston to St. Charles?

Use this chart to determine the optimal time to book a round-trip flight from Boston to St. Charles. Price data was last updated on November 15, 2024.

To ensure you get the cheapest price possible for a flight from Boston to St. Charles, you should look to book at least 63 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Boston to St. Charles?

Currently, September is the cheapest month in which you can book a flight from Boston to St. Charles (average of $308). Flying from Boston to St. Charles in March is currently the most expensive (average of $357). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to CH5?

Find hourly flight availability from Boston to St. Charles. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 21, 2024.

When flying from Boston to St. Charles, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Boston to St. Charles?

Use this chart to determine the cheapest time to fly round-trip from Boston to St. Charles. Price data was last updated on June 16, 2024.

Travelers seeking maximum savings on their Boston to St. Charles flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Boston to St. Charles

Explore weekly flight availability from Boston to St. Charles. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated noviembre 21, 2024.

The most flights from BOS to CH5 are scheduled on a Monday (6 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in St. Charles by month

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

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

Get insights into the airlines that provide service to St. Charles. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Charles. Reviews last updated noviembre 21, 2024.
Peruse reviews from past customers who have flown with Delta, United Airlines and Frontier from Boston 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
5,015 reviews

Entertainment

7.7

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,015 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,458 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,759 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,173 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,015 reviews

Entertainment

7.7

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

Find useful and relevant information for your journey from Boston to St. Charles. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to St. Charles?

    Boston Logan Intl (BOS) is the airport you will fly out of if you book a flight from Boston to St. Charles. You should not have trouble finding flights to St. Charles from Logan Intl; the airport handles an average of 4 outbound flights to St. Charles per day. You should also have plenty of airline options to choose from since 6 airlines have flights from the Boston airport to St. Charles. It is only a 2.6 mi journey to Logan Intl (BOS) from Boston’s city center.

  • How popular is this Boston to St. Charles flight route?

    The Boston Logan Intl to St. Charles flight path was viewed by 3 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from Boston to St. Charles one-way?

    The cheapest airlines for a one-way flight from Boston to St. Charles are Delta ($128), Spirit Airlines ($134), and Frontier ($135).

  • What are the most reliable airlines from Boston to St. Charles?

    No one likes to see their flight delayed. When booking a flight from Boston to St. Charles consider choosing Republic Airways (100%), Qatar Airways (93%) or American Airlines (92%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Boston to St. Charles?

    Looking at all options, your cheapest flight can be booked for $159. While the most popular route (Boston Logan Intl - Lambert-St Louis) can be booked for $151 on average our data indicates $354 when flying from Boston to St. Charles.

  • Can I find deals for flights from Boston to St. Charles that include hotel bookings?

    Yes. In addition to deals on Boston to St. Charles flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to St. Charles?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to St. Charles.

  • Can I find deals for business class flights from Boston to St. Charles?

    Yes. Cheapflights offers flight deals from Boston to St. Charles by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to St. Charles?

    Currently, September is the cheapest month in which you can book a flight from Boston to St. Charles (average of $308). Flying from Boston to St. Charles in March is currently the most expensive (average of $357). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 6 airlines flying from Boston to St. Charles

Discover the top 6 airlines that operate flights from Boston to St. Charles. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,629,791 searches. Data last updated noviembre 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$208FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$144Average$270FlexibilityNo cancel feeOn-time65%
DeltaCheapest$196Average$379FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$257Average$463FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$257Average$540FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$308Average$433FlexibilityNo cancel feeOn-time63%
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