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$85+ Cheap flights from Missouri to Boston (BOS)

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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BOS
Mar 30 — Apr 61
Mon 3/30
Mon 4/6
1 adult, Economy
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Cheap flight deals from Missouri to Boston

Cheapest flights from Missouri to Boston
Explore the most affordable flight options available from Missouri to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 28, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 2/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/312:24 pm
MCI
-
BOS
1 stop10h 35m
Spirit Airlines
Wed 4/84:23 pm
BOS
-
MCI
1 stop8h 30m
Spirit Airlines
Deal found 2/24$195
This CheapOair deal was found by Cheapflights users on 2/24. 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.
Fri 4/1012:24 pm
MCI
-
BOS
1 stop10h 35m
Spirit Airlines
Mon 4/135:49 pm
BOS
-
MCI
1 stop18h 40m
Spirit Airlines
Deal found 2/24$228
This CheapOair deal was found by Cheapflights users on 2/24. 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.
Tue 3/2412:24 pm
MCI
-
BOS
1 stop26h 04m
Spirit Airlines
Tue 3/319:45 am
BOS
-
MCI
1 stop15h 08m
Spirit Airlines
Deal found 2/24$233
This CheapOair deal was found by Cheapflights users on 2/24. 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.
Thu 4/1612:15 pm
MCI
-
BOS
1 stop20h 50m
Spirit Airlines
Wed 4/227:43 pm
BOS
-
MCI
1 stop16h 26m
Spirit Airlines
Deal found 2/24$234
This Expedia deal was found by Cheapflights users on 2/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/64:31 pm
MCI
-
BOS
1 stop7h 55m
Multiple Airlines
Thu 4/94:23 pm
BOS
-
MCI
1 stop8h 30m
Multiple Airlines
Deal found 2/24$235
This CheapOair deal was found by Cheapflights users on 2/25. 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.
Thu 5/2812:15 pm
MCI
-
BOS
1 stop10h 44m
Spirit Airlines
Wed 6/35:40 am
BOS
-
MCI
1 stop30h 29m
Spirit Airlines
Deal found 2/25$247
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2912:15 pm
MCI
-
BOS
1 stop10h 44m
Spirit Airlines
Wed 6/35:40 am
BOS
-
MCI
1 stop30h 29m
Spirit Airlines
Deal found 2/24$259
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1412:15 pm
MCI
-
BOS
1 stop10h 44m
Multiple Airlines
Sat 5/1611:16 am
BOS
-
MCI
1 stop13h 41m
Multiple Airlines
Deal found 2/24$261
This American Airlines deal was found by Cheapflights users on 2/24. 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.
Wed 4/2910:13 am
COU
-
BOS
1 stop9h 59m
American Airlines
Mon 5/412:22 pm
BOS
-
COU
1 stop10h 08m
American Airlines
Deal found 2/24$265
This United Airlines deal was found by Cheapflights users on 2/27. 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.
Wed 4/13:23 pm
COU
-
BOS
1 stop5h 36m
United Airlines
Tue 4/74:23 pm
BOS
-
COU
1 stop6h 38m
United Airlines
Deal found 2/27$268
This American Airlines deal was found by Cheapflights users on 2/24. 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.
Fri 4/36:00 am
COU
-
BOS
1 stop8h 21m
American Airlines
Fri 4/1012:22 pm
BOS
-
COU
1 stop10h 08m
American Airlines
Deal found 2/24$279
This United Airlines deal was found by Cheapflights users on 2/27. 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.
Wed 3/258:54 am
JLN
-
BOS
1 stop7h 23m
United Airlines
Wed 4/86:00 am
BOS
-
JLN
1 stop8h 12m
United Airlines
Deal found 2/27$284

Find flight deals from Missouri to Boston

Keep the following information in mind while searching for Missouri to Boston flight deals. Data was last updated February 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$195
(Cheapflightsfares)

One-way from

$85
(Cheapflightsfares)

Popular in

February

Cheapest in

September

Average price

$476

Good round-trip deal

$429 or less

Good one-way deal

$194 or less
Provider with most accurate pricing for Lambert-St Louis-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Boston Logan Intl flights.
Search Deals
From Missouri to Boston Logan Intl
Search Deals
One-way flight from Missouri to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Missouri to Boston Logan Intl.
Search Deals
Price to beat on a one-way flight from Missouri to Boston Logan Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Boston 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 February 28, 2026.
Use the filters below to find and compare flights from Missouri to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ColumbiaBoston

COU - BOS

COUBOS

Columbia Regional

Wed 4/1

3:23 pm-9:59 pm

1 stop5h 36m

Boston Logan Intl

Tue 4/7

6:00 am-2:48 pm

2 stops9h 48m

$274

ColumbiaBoston

COU - BOS

COUBOS

Columbia Regional

Fri 4/10

10:16 am-9:12 pm

1 stop9h 56m

Boston Logan Intl

Sun 4/12

8:03 am-3:58 pm

1 stop8h 55m

$279

ColumbiaBoston

COU - BOS

COUBOS

Columbia Regional

Fri 4/10

8:00 am-7:06 pm

2 stops10h 06m

Boston Logan Intl

Sun 4/12

6:00 am-10:55 am

1 stop5h 55m

$296

ColumbiaBoston

COU - BOS

COUBOS

Columbia Regional

Wed 8/12

8:00 am-4:38 pm

2 stops7h 38m

Boston Logan Intl

Sat 8/15

7:10 am-2:29 pm

1 stop8h 19m

$297

ColumbiaBoston

COU - BOS

COUBOS

Columbia Regional

Fri 4/3

6:00 am-6:04 pm

1 stop11h 04m

Boston Logan Intl

Fri 4/10

7:40 pm-9:46 am

1 stop15h 06m

$309

ColumbiaBoston

COU - BOS

COUBOS

Columbia Regional

Wed 4/29

3:23 pm-11:59 pm

2 stops7h 36m

Boston Logan Intl

Mon 5/4

8:10 pm-12:33 am

1 stop5h 23m

$354

ColumbiaBoston

COU - BOS

COUBOS

Columbia Regional

Fri 5/22

6:00 am-5:33 pm

1 stop10h 33m

Boston Logan Intl

Mon 5/25

8:37 am-5:57 pm

1 stop10h 20m

$364

Kansas CityBoston

MCI - BOS

MCIBOS

Kansas City

Thu 4/30

7:32 pm-11:44 pm

Nonstop3h 12m

Boston Logan Intl

Mon 5/4

3:00 pm-10:21 pm

1 stop8h 21m

$369

ColumbiaBoston

COU - BOS

COUBOS

Columbia Regional

Fri 8/14

3:16 pm-11:08 pm

1 stop6h 52m

Boston Logan Intl

Mon 8/24

5:45 pm-12:30 am

2 stops7h 45m

$377

ColumbiaBoston

COU - BOS

COUBOS

Columbia Regional

Tue 3/24

11:15 am-9:41 pm

2 stops9h 26m

Boston Logan Intl

Mon 3/30

6:00 am-10:55 am

1 stop5h 55m

$379

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/26

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from Missouri to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Missouri 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 from Missouri to Boston

What is the cheapest month to book a flight from Missouri to Boston?

Currently, September is the cheapest month in which you can book a flight from Missouri to Boston (average of $177). Flying from Missouri to Boston in July is currently the most expensive (average of $266). 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 MO to BOS?

Find hourly flight availability from Missouri to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 28, 2026.

A simple way to save on the total cost of your ticket is to fly from Missouri to Boston in the evening. If you’re flexible enough to do this you can expect to save up to 54% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Missouri to Boston?

Use this chart to determine the cheapest time to fly round-trip from Missouri to Boston. Price data was last updated on February 21, 2026.

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

Related info for your journey

Find useful and relevant information for your journey from Missouri to Boston. 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 into for flights to Boston from Missouri?

    Located just 2.6 mi from the city center, Boston Logan Intl (BOS) is the airport most travelers will use when flying to Boston from Missouri.

  • How popular is this Missouri to Boston flight route?

    The Missouri to Boston Logan Intl flight path was viewed by 16 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Missouri to Boston?

    For as low as $274, United Airlines can have you in Boston from Missouri in 5h 36m. Airlines will cover a distance of 1136 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Missouri to Boston?

    When deciding which route to take from Missouri to Boston consider Kansas City - Boston Logan Intl, Lambert-St Louis - Boston Logan Intl or Springfield-Branson - Boston Logan Intl as they are the most popular.

  • What are the most reliable airlines from Missouri to Boston?

    No one likes to see their flight delayed. When booking a flight from Missouri to Boston consider choosing Republic Airways (90%), Southwest (81%) or Iberia (81%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Missouri to Boston?

    The cheapest flight price from Missouri to Boston is $175. On average you can expect to pay $895. The most popular route, (Kansas City - Boston Logan Intl), can usually be booked for $213.

  • Can I find deals for flights from Missouri to Boston that include hotel bookings?

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

  • How can I find direct flights from Missouri to Boston?

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

  • Can I find deals for business class flights from Missouri to Boston?

    Yes. Cheapflights offers flight deals from Missouri to Boston 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 Missouri to Boston?

    Currently, September is the cheapest month in which you can book a flight from Missouri to Boston (average of $177). Flying from Missouri to Boston in July is currently the most expensive (average of $266). 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

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Medford
Cambridge
Hampton Beach
Watertown
Seekonk
Brockton
Concord
Seabrook
Cranston
Lincoln
Smithfield
Warwick
Peabody
York Beach
Londonderry
Swansea
Old Orchard Beach
Quincy
Lowell
Chelsea

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Top 6 airlines flying from Missouri to Boston

Discover the top 6 airlines that operate flights from Missouri to Boston. 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 February 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$73Average$254FlexibilityNo cancel feeOn-time65%
FrontierCheapest$75Average$260FlexibilityNo cancel feeOn-time62%
DeltaCheapest$153Average$420FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$216Average$418FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$217Average$443FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$296Average$449FlexibilityNo cancel feeOn-time63%

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