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$99+ Cheap flights from Missouri to Boise (BOI)

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 12/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BOI
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find flight deals from Missouri to Boise

Cheapest flights from Missouri to Boise
Explore the most affordable flight options available from Missouri to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This Delta deal was found by Cheapflights users on 11/12. 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.
Wed 12/37:50 amMCI - BOI
1 stop6h 24mDelta
Sat 12/61:54 pmBOI - MCI
1 stop8h 28mDelta
Deal found 11/12$197
This Southwest deal was found by Cheapflights users on 11/12. 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.
Wed 12/35:35 amMCI - BOI
1 stop6h 50mSouthwest
Sat 12/66:00 amBOI - MCI
2 stops8h 25mSouthwest
Deal found 11/12$202
This Mytrip deal was found by Cheapflights users on 11/12. 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.
Fri 12/126:30 amMCI - BOI
1 stop10h 14mMultiple Airlines
Fri 12/1910:41 pmBOI - MCI
1 stop15h 11mMultiple Airlines
Deal found 11/12$219
This United Airlines deal was found by Cheapflights users on 11/12. 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.
Sat 12/136:00 amMCI - BOI
1 stop4h 59mUnited Airlines
Sat 1/102:37 pmBOI - MCI
1 stop4h 56mUnited Airlines
Deal found 11/12$241
This Kiwi.com deal was found by Cheapflights users on 11/11. 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 12/267:43 pmSTL - BOI
1 stop17h 16mFrontier
Thu 1/112:38 pmBOI - STL
1 stop20h 24mFrontier
Deal found 11/11$245
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Sun 11/237:57 pmSTL - BOI
1 stop25h 02mFrontier
Sun 11/3012:48 pmBOI - STL
1 stop20h 14mFrontier
Deal found 11/12$247
This Delta deal was found by Cheapflights users on 11/10. 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.
Wed 12/36:15 amSTL - BOI
2 stops13h 37mDelta
Tue 12/99:00 amBOI - STL
2 stops9h 10mDelta
Deal found 11/10$256
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Mon 12/227:00 amMCI - BOI
1 stop9h 44mMultiple Airlines
Thu 12/2512:38 pmBOI - MCI
2 stops20h 30mMultiple Airlines
Deal found 11/12$262
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Sat 12/2710:10 pmSTL - BOI
2 stops14h 33mFrontier
Thu 1/112:38 pmBOI - STL
1 stop20h 24mFrontier
Deal found 11/11$264
This Delta deal was found by Cheapflights users on 11/13. 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.
Fri 12/127:50 amMCI - BOI
1 stop9h 12mDelta
Mon 12/157:45 pmBOI - MCI
2 stops13h 15mDelta
Deal found 11/13$267
This Kiwi.com deal was found by Cheapflights users on 11/10. 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.
Wed 12/106:30 amMCI - BOI
2 stops30h 19mMultiple Airlines
Sun 12/1412:44 pmBOI - MCI
1 stop6h 06mMultiple Airlines
Deal found 11/10$276
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Sun 11/237:57 pmSTL - BOI
1 stop25h 02mMultiple Airlines
Sun 11/309:22 pmBOI - STL
2 stops48h 11mMultiple Airlines
Deal found 11/12$283

Cheap flight deals from Missouri to Boise

Keep the following information in mind while searching for Missouri to Boise flight deals. Data was last updated November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$172
(Expedia)

One-way from

$99
(Delta)

Popular in

February

Cheapest in

April

Average price

$411
Provider with most accurate pricing for Lambert-St Louis-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Boise Air Term. Gowen Fld flights.
Search Deals
From Missouri to Boise Air Term. Gowen Fld
Search Deals
One-way flight from Missouri to Boise Air Term. Gowen Fld
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Boise 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 November 13, 2025.
Use the filters below to find and compare flights from Missouri to Boise that are best for you.

Fly from

Missouri

Fly to

Boise

Route

Depart

Return

Price

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Thu 1/22

3:59 pm-11:58 pm

1 stop8h 59m

Boise Air Term. Gowen Fld

Sun 1/25

12:54 pm-7:51 pm

1 stop5h 57m

$172

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Fri 1/23

2:45 pm-11:01 pm

1 stop9h 16m

Boise Air Term. Gowen Fld

Sun 1/25

12:54 pm-7:51 pm

1 stop5h 57m

$172

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Fri 12/12

7:50 am-1:14 pm

1 stop6h 24m

Boise Air Term. Gowen Fld

Mon 12/15

1:54 pm-11:22 pm

1 stop8h 28m

$197

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Fri 1/9

6:50 am-10:40 am

1 stop4h 50m

Boise Air Term. Gowen Fld

Wed 1/14

11:20 am-7:05 pm

1 stop6h 45m

$197

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Wed 12/3

7:50 am-1:14 pm

1 stop6h 24m

Boise Air Term. Gowen Fld

Sat 12/6

1:54 pm-11:22 pm

1 stop8h 28m

$197

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Wed 12/3

5:35 am-11:25 am

1 stop6h 50m

Boise Air Term. Gowen Fld

Sat 12/6

6:00 am-3:25 pm

2 stops8h 25m

$202

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Sat 12/13

6:00 am-9:59 am

1 stop4h 59m

Boise Air Term. Gowen Fld

Sat 1/10

2:37 pm-8:33 pm

1 stop4h 56m

$241

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sun 11/23

7:57 pm-7:59 pm

1 stop25h 02m

Boise Air Term. Gowen Fld

Sun 11/30

12:48 pm-10:02 am

1 stop20h 14m

$247

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Wed 12/3

6:15 am-6:52 pm

2 stops13h 37m

Boise Air Term. Gowen Fld

Tue 12/9

9:00 am-7:10 pm

2 stops9h 10m

$256

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sat 12/27

10:10 pm-11:43 am

2 stops14h 33m

Boise Air Term. Gowen Fld

Thu 1/1

12:38 pm-10:02 am

1 stop20h 24m

$264

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 42 results
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Best time to book a flight from Missouri to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise 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 Boise

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

Currently, June is the cheapest month in which you can book a flight from Missouri to Boise (average of $133). Flying from Missouri to Boise in February is currently the most expensive (average of $289). 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 BOI?

Find hourly flight availability from Missouri to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 28% on flights from Missouri to Boise by exploring options for tickets at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Missouri to Boise. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Missouri to Boise flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday afternoons 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 Boise. 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 Boise from Missouri?

    Most people fly into Boise Air Term. Gowen Fld (BOI) if they book a flight to Boise from Missouri. Air Term. Gowen Fld is conveniently located just 3.3 mi from Boise’s city center.

  • How long is the flight from Missouri to Boise?

    Departing from Missouri to Boise will take you 4h 50m. Missouri and Boise are separated by a distance of 1148 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Missouri to Boise one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $99. However, be on the lookout for offers from Frontier and Alaska Airlines, as they are both options that can get you from Missouri to Boise for a low price.

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

    When deciding which route to take from Missouri to Boise consider Kansas City - Boise Air Term. Gowen Fld, Springfield-Branson - Boise Air Term. Gowen Fld or Lambert-St Louis - Boise Air Term. Gowen Fld as they are the most popular.

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

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

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

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

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

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

    Currently, June is the cheapest month in which you can book a flight from Missouri to Boise (average of $133). Flying from Missouri to Boise in February is currently the most expensive (average of $289). 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 Boise?

Book flights to Boise if you plan to visit one of these locations
Ontario
Meridian
Nampa
Caldwell
McCall

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Top 5 airlines flying from Missouri to Boise

Discover the top 5 airlines that operate flights from Missouri to Boise. 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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$182Average$360FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$186Average$436FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$216Average$393FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$266Average$450FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$267Average$463FlexibilityNo cancel feeOn-time69%

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