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St. Charles

$145+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — STL
dic. 24 — dic. 311
mar. 12/24
mar. 12/31
1 adult, Economy
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The best prices from Boston Logan Intl to St. Charles are usually found in September or February, 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 diciembre 19, 2024.

Round-trip from

$201
(CheapOair)

One-way from

$145
(Gotogate)

Popular in

March

Cheapest in

September

Average price

$451
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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High demand for flights, 3% potential price rise
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Best time to find cheap flights, 1% potential price drop
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Average for round-trip flights in December 2024
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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 diciembre 19, 2024.

This Gotogate deal was found by Cheapflights users on 12/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/316:00 amBOS - STL
1 stop18h 28mFrontier
mar. 1/75:05 pmSTL - BOS
1 stop6h 25mFrontier
Deal found 12/18$217
This American Airlines deal was found by Cheapflights users on 12/18. 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.
mar. 12/316:25 amBOS - STL
Nonstop3h 17mAmerican Airlines
mar. 1/79:25 amSTL - BOS
Nonstop2h 40mAmerican Airlines
Deal found 12/18$361
This Delta deal was found by Cheapflights users on 12/18. 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.
mar. 12/3112:20 pmBOS - STL
1 stop5h 39mDelta
vie. 1/37:15 amSTL - BOS
1 stop5h 49mDelta
Deal found 12/18$389
This United Airlines deal was found by Cheapflights users on 12/18. 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.
mar. 12/312:10 pmBOS - STL
1 stop7h 13mUnited Airlines
mar. 1/76:30 amSTL - BOS
2 stops9h 42mUnited Airlines
Deal found 12/18$399
This Southwest deal was found by Cheapflights users on 12/18. 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. 12/3112:20 pmBOS - STL
2 stops8h 05mSouthwest
mar. 1/77:50 amSTL - BOS
2 stops8h 10mSouthwest
Deal found 12/18$430
This Mytrip deal was found by Cheapflights users on 12/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/258:30 pmBOS - STL
2 stops19h 51mSpirit Airlines
jue. 1/234:28 pmSTL - BOS
1 stop17h 08mSpirit Airlines
Deal found 12/19$484
This FlightHub deal was found by Cheapflights users on 12/18. 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.
jue. 12/265:00 amBOS - STL
1 stop11h 21mMultiple Airlines
lun. 1/67:43 amSTL - BOS
1 stop16h 01mMultiple Airlines
Deal found 12/18$530
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/266:59 pmBOS - STL
2 stops30h 00mAlaska Airlines
jue. 1/302:49 pmSTL - BOS
2 stops23h 40mAlaska Airlines
Deal found 12/18$919

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 2,558,603 searches. Data last updated diciembre 19, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

dom. 1/12

6:00 am-11:27 pm

1 stop18h 27m

Lambert-St Louis

jue. 1/16

4:28 pm-10:36 am

1 stop17h 08m

$201

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

jue. 1/9

5:45 am-2:43 pm

1 stop9h 58m

Lambert-St Louis

dom. 1/12

4:28 pm-2:45 pm

2 stops21h 17m

$215

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

mar. 12/31

6:00 am-11:28 pm

1 stop18h 28m

Lambert-St Louis

mar. 1/7

5:05 pm-12:30 am

1 stop6h 25m

$217

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

jue. 1/16

5:20 am-9:36 am

1 stop5h 16m

Lambert-St Louis

lun. 1/20

1:35 pm-7:26 pm

1 stop4h 51m

$236

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

lun. 1/13

5:45 am-3:38 pm

2 stops10h 53m

Lambert-St Louis

jue. 1/16

7:00 am-3:41 pm

1 stop7h 41m

$316

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

lun. 1/13

6:55 am-9:10 am

Nonstop3h 15m

Lambert-St Louis

jue. 1/16

5:35 am-3:00 pm

1 stop8h 25m

$352

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

vie. 1/17

6:30 am-8:54 am

Nonstop3h 24m

Lambert-St Louis

dom. 1/19

1:30 pm-5:10 pm

Nonstop2h 40m

$353

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

jue. 3/6

7:00 am-2:25 pm

1 stop32h 25m

Lambert-St Louis

mar. 3/11

7:00 am-3:23 pm

2 stops31h 23m

$477

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

dom. 3/9

6:00 am-11:49 pm

1 stop18h 49m

$145

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

sáb. 1/11

5:30 pm-2:43 pm

2 stops22h 13m

$146

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 16 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 December 13, 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, August is the cheapest month in which you can book a flight from Boston to St. Charles (average of $311). Flying from Boston to St. Charles in March is currently the most expensive (average of $356). 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 diciembre 19, 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.

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 diciembre 19, 2024.
Peruse reviews from past customers who have flown with Spirit Airlines, Frontier and Delta 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
4,836 reviews

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,836 reviews
Southwest
8.1
Very good
4,836 reviews

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,552 reviews
Southwest
8.1
Very good
4,836 reviews

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,600 reviews
Southwest
8.1
Very good
4,836 reviews

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,048 reviews
Southwest
8.1
Very good
4,836 reviews

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,836 reviews

Crew

8.7

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 2 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 5 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 Frontier ($145), Spirit Airlines ($146), and American Airlines ($152).

  • 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%), American Airlines (91%) or Southwest (89%) 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 $162. While the most popular route (Boston Logan Intl - Lambert-St Louis) can be booked for $147 on average our data indicates $377 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, August is the cheapest month in which you can book a flight from Boston to St. Charles (average of $311). Flying from Boston to St. Charles in March is currently the most expensive (average of $356). 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 2,558,603 searches. Data last updated diciembre 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$107Average$186FlexibilityNo cancel feeOn-time65%
FrontierCheapest$118Average$203FlexibilityNo cancel feeOn-time62%
DeltaCheapest$196Average$373FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$256Average$532FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$257Average$471FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$308Average$440FlexibilityNo cancel feeOn-time63%
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