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$112+ Cheap flights from Idaho to Missouri

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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — STL
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Idaho to Missouri

Keep the following information in mind while searching for Idaho to Missouri flight deals. Data was last updated February 20, 2025.

Round-trip from

$223
(Delta)

One-way from

$120
(Alaska Airlines)
From Idaho to Missouri
Search Deals
One-way flight from Idaho to Missouri
Search Deals

Find flight deals from Idaho to Missouri

Cheapest flights from Idaho to Missouri
Explore the most affordable flight options available from Idaho to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/42:05 pmBOI - MCI
1 stop7h 55mDelta
Mon 4/76:35 amMCI - BOI
1 stop7h 50mDelta
Deal found 2/20$223
This Delta deal was found by Cheapflights users on 2/19. 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.
Thu 4/35:59 pmBOI - STL
1 stop5h 29mDelta
Wed 4/96:00 amSTL - BOI
1 stop7h 44mDelta
Deal found 2/19$227
This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/31:23 pmBOI - SGF
1 stop6h 00mAmerican Airlines
Sat 5/105:27 amSGF - BOI
1 stop8h 02mAmerican Airlines
Deal found 2/19$264
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/141:55 pmGEG - MCI
1 stop7h 05mDelta
Tue 3/186:35 amMCI - GEG
1 stop6h 02mDelta
Deal found 2/20$305
This Delta deal was found by Cheapflights users on 2/19. 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.
Tue 4/152:15 pmGEG - STL
1 stop7h 19mDelta
Mon 4/217:15 pmSTL - GEG
1 stop6h 29mDelta
Deal found 2/19$307
This CheapOair deal was found by Cheapflights users on 2/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/131:31 pmBOI - MCI
1 stop20h 04mSpirit Airlines
Mon 3/1711:40 amMCI - BOI
1 stop25h 52mSpirit Airlines
Deal found 2/19$315
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/101:29 pmGEG - MCI
1 stop8h 30mAlaska Airlines
Thu 4/177:28 pmMCI - GEG
1 stop5h 35mAlaska Airlines
Deal found 2/20$326
This Southwest deal was found by Cheapflights users on 2/19. 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.
Thu 4/242:45 pmBOI - STL
2 stops8h 50mSouthwest
Mon 4/285:10 pmSTL - BOI
2 stops8h 40mSouthwest
Deal found 2/19$329
This Hawaiian Airlines deal was found by Cheapflights users on 2/20. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/272:47 pmBOI - STL
1 stop8h 12mHawaiian Airlines
Sun 3/306:44 amSTL - BOI
1 stop8h 08mHawaiian Airlines
Deal found 2/20$338
This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/261:54 pmBOI - STL
1 stop9h 04mAmerican Airlines
Sun 3/307:02 amSTL - BOI
1 stop6h 44mAmerican Airlines
Deal found 2/19$339
This Southwest deal was found by Cheapflights users on 2/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/144:15 pmGEG - MCI
1 stop6h 15mSouthwest
Fri 4/185:00 pmMCI - GEG
2 stops8h 00mSouthwest
Deal found 2/20$342
This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/71:36 pmBOI - MCI
1 stop6h 40mAmerican Airlines
Tue 3/117:20 amMCI - BOI
1 stop6h 56mAmerican Airlines
Deal found 2/19$344

Find flights from Idaho to Missouri within your budget

Customize your flight search to find flights from Idaho to Missouri 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 20, 2025.

Fly from

Idaho

Fly to

Missouri

Route

Depart

Return

Price

BoiseKansas City

BOI - MCI

BOIMCI

Boise Air Term. Gowen Fld

Fri 4/4

2:05 pm-11:00 pm

1 stop7h 55m

Kansas City

Mon 4/7

6:35 am-1:25 pm

1 stop7h 50m

$223

BoiseSt. Louis

BOI - STL

BOISTL

Boise Air Term. Gowen Fld

Thu 4/3

5:59 pm-12:28 am

1 stop5h 29m

Lambert-St Louis

Wed 4/9

6:00 am-12:44 pm

1 stop7h 44m

$227

BoiseSpringfield

BOI - SGF

BOISGF

Boise Air Term. Gowen Fld

Sat 5/3

1:23 pm-8:23 pm

1 stop6h 00m

Springfield-Branson

Sat 5/10

5:27 am-12:29 pm

1 stop8h 02m

$264

SpokaneKansas City

GEG - MCI

GEGMCI

Spokane

Fri 3/14

1:55 pm-11:00 pm

1 stop7h 05m

Kansas City

Tue 3/18

6:35 am-10:37 am

1 stop6h 02m

$305

SpokaneSt. Louis

GEG - STL

GEGSTL

Spokane

Tue 4/15

2:15 pm-11:34 pm

1 stop7h 19m

Lambert-St Louis

Mon 4/21

7:15 pm-11:44 pm

1 stop6h 29m

$307

BoiseKansas City

BOI - MCI

BOIMCI

Boise Air Term. Gowen Fld

Thu 3/13

1:31 pm-10:35 am

1 stop20h 04m

Kansas City

Mon 3/17

11:40 am-12:32 pm

1 stop25h 52m

$315

SpokaneKansas City

GEG - MCI

GEGMCI

Spokane

Thu 4/10

1:29 pm-11:59 pm

1 stop8h 30m

Kansas City

Thu 4/17

7:28 pm-11:03 pm

1 stop5h 35m

$326

BoiseSt. Louis

BOI - STL

BOISTL

Boise Air Term. Gowen Fld

Thu 4/24

2:45 pm-12:35 am

2 stops8h 50m

Lambert-St Louis

Mon 4/28

5:10 pm-12:50 am

2 stops8h 40m

$329

BoiseSt. Louis

BOI - STL

BOISTL

Boise Air Term. Gowen Fld

Thu 3/27

2:47 pm-11:59 pm

1 stop8h 12m

Lambert-St Louis

Sun 3/30

6:44 am-1:52 pm

1 stop8h 08m

$338

BoiseSt. Louis

BOI - STL

BOISTL

Boise Air Term. Gowen Fld

Wed 3/26

1:54 pm-11:58 pm

1 stop9h 04m

Lambert-St Louis

Sun 3/30

7:02 am-12:46 pm

1 stop6h 44m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 57 results
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Best time to book a flight from Idaho to Missouri

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

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

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

Currently, August is the cheapest month in which you can book a flight from Idaho to Missouri (average of $311). Flying from Idaho to Missouri 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 ID to MO?

Find hourly flight availability from Idaho to Missouri. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Missouri as you normally would.

Rainfall in Missouri by month

Plan your trip to Missouri by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Missouri ranges from 1.1 - 5.2 inches per month. May is typically the wettest month, when rainfall can reach 5.2 in. January is typically the driest time to visit Missouri when rainfall is around 1.1 in.

Temperature in Missouri by month

Plan your trip to Missouri by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Missouri, 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 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing Missouri

Get insights into the airlines that provide service to Missouri. 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 Missouri. Reviews last updated February 20, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from Idaho to Missouri by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

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

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

    The cheapest airlines for a one-way flight from Idaho to Missouri are Alaska Airlines ($120), American Airlines ($121), and Delta ($150).

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Idaho to Missouri (average of $311). Flying from Idaho to Missouri 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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Alternative routes for Idaho to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Idaho to Missouri

Discover the top 6 airlines that operate flights from Idaho to Missouri. 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 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$144Average$187FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$156Average$475FlexibilityNo cancel feeOn-time75%
DeltaCheapest$280Average$534FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$292Average$582FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$293Average$436FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$318Average$462FlexibilityNo cancel feeOn-time63%
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