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Missouri

$100+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — STL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$198
(Hawaiian Airlines)

One-way from

$100
(American Airlines)

Popular in

February

Cheapest in

April

Average price

$406
From Idaho to Missouri
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One-way flight from Idaho to Missouri
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Highest demand for flights based on searches. 6% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 6/10. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/311:40 pmGEG - MCI
1 stop8h 19mHawaiian Airlines
Sat 9/64:55 pmMCI - GEG
1 stop8h 16mHawaiian Airlines
Deal found 6/10$198
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/205:06 amGEG - MCI
1 stop8h 55mAlaska Airlines
Mon 9/227:59 pmMCI - GEG
1 stop6h 00mAlaska Airlines
Deal found 6/10$199
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/265:15 amGEG - MCI
1 stop5h 25mUnited Airlines
Tue 8/265:15 pmMCI - GEG
1 stop5h 48mUnited Airlines
Deal found 6/11$239
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/106:00 amGEG - MCI
1 stop8h 59mAmerican Airlines
Sun 7/135:44 amMCI - GEG
1 stop8h 51mAmerican Airlines
Deal found 6/11$259
This Southwest deal was found by Cheapflights users on 6/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/56:15 amGEG - MCI
1 stop11h 35mSouthwest
Mon 8/115:55 pmMCI - GEG
1 stop7h 45mSouthwest
Deal found 6/11$264
This Delta deal was found by Cheapflights users on 6/9. 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.
Sat 9/273:00 pmBOI - MCI
1 stop6h 57mDelta
Mon 9/296:15 pmMCI - BOI
1 stop7h 02mDelta
Deal found 6/9$267
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/67:25 amBOI - MCI
2 stops7h 15mSouthwest
Sat 8/94:55 pmMCI - BOI
1 stop6h 15mSouthwest
Deal found 6/10$272
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/85:42 pmBOI - STL
1 stop5h 17mUnited Airlines
Tue 7/155:15 amSTL - BOI
1 stop5h 31mUnited Airlines
Deal found 6/10$279
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 8/195:05 pmGEG - STL
1 stop5h 33mDelta
Wed 8/278:46 amSTL - GEG
1 stop6h 30mDelta
Deal found 6/10$279
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/23:36 pmGEG - MCI
1 stop5h 40mDelta
Tue 7/86:04 pmMCI - GEG
1 stop7h 34mDelta
Deal found 6/11$279
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/196:15 amGEG - STL
1 stop8h 40mSouthwest
Tue 8/262:25 pmSTL - GEG
2 stops9h 40mSouthwest
Deal found 6/10$284
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/306:00 amBOI - STL
1 stop6h 29mDelta
Sun 8/317:35 amSTL - BOI
1 stop5h 20mDelta
Deal found 6/11$287

Cheapflights Fare Finder

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 June 12, 2025.
Use the filters below to find and compare flights from Idaho to Missouri that are best for you.

Fly from

Idaho

Fly to

Missouri

Route

Depart

Return

Price

SpokaneKansas City

GEG - MCI

GEGMCI

Spokane

Sun 8/31

1:40 pm-11:59 pm

1 stop8h 19m

Kansas City

Sat 9/6

4:55 pm-11:11 pm

1 stop8h 16m

$198

SpokaneKansas City

GEG - MCI

GEGMCI

Spokane

Sat 9/20

5:06 am-4:01 pm

1 stop8h 55m

Kansas City

Mon 9/22

7:59 pm-11:59 pm

1 stop6h 00m

$199

SpokaneKansas City

GEG - MCI

GEGMCI

Spokane

Tue 8/26

5:15 am-12:40 pm

1 stop5h 25m

Kansas City

Tue 8/26

5:15 pm-9:03 pm

1 stop5h 48m

$239

SpokaneKansas City

GEG - MCI

GEGMCI

Spokane

Thu 7/10

6:00 am-4:59 pm

1 stop8h 59m

Kansas City

Sun 7/13

5:44 am-12:35 pm

1 stop8h 51m

$259

SpokaneKansas City

GEG - MCI

GEGMCI

Spokane

Tue 8/5

6:15 am-7:50 pm

1 stop11h 35m

Kansas City

Mon 8/11

5:55 pm-11:40 pm

1 stop7h 45m

$264

BoiseKansas City

BOI - MCI

BOIMCI

Boise Air Term. Gowen Fld

Sat 9/27

3:00 pm-10:57 pm

1 stop6h 57m

Kansas City

Mon 9/29

6:15 pm-12:17 am

1 stop7h 02m

$267

BoiseKansas City

BOI - MCI

BOIMCI

Boise Air Term. Gowen Fld

Wed 8/6

7:25 am-3:40 pm

2 stops7h 15m

Kansas City

Sat 8/9

4:55 pm-10:10 pm

1 stop6h 15m

$272

BoiseSt. Louis

BOI - STL

BOISTL

Boise Air Term. Gowen Fld

Tue 7/8

5:42 pm-11:59 pm

1 stop5h 17m

Lambert-St Louis

Tue 7/15

5:15 am-9:46 am

1 stop5h 31m

$279

SpokaneSt. Louis

GEG - STL

GEGSTL

Spokane

Tue 8/19

5:05 pm-12:38 am

1 stop5h 33m

Lambert-St Louis

Tue 8/26

6:45 pm-10:30 pm

1 stop5h 45m

$279

SpokaneKansas City

GEG - MCI

GEGMCI

Spokane

Wed 7/2

3:36 pm-11:16 pm

1 stop5h 40m

Kansas City

Tue 7/8

6:04 pm-11:38 pm

1 stop7h 34m

$279

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 60 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.

Cheapflights Insights

Everything you need to know about your flight from Idaho to Missouri

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 June 12, 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 June 12, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 American Airlines ($100), Alaska Airlines ($105), and Southwest ($110).

  • 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$84Average$223FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$156Average$430FlexibilityNo cancel feeOn-time75%
DeltaCheapest$159Average$417FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$226Average$415FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$292Average$561FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$315Average$467FlexibilityNo cancel feeOn-time63%

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