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Idaho

$115+ Cheap flights from Missouri to Idaho

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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BOI
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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Cheap flight deals from Missouri to Idaho

Keep the following information in mind while searching for Missouri to Idaho flight deals. Data was last updated April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$187
(CheapOair)

One-way from

$115
(Cheapflightsfares)

Popular in

December

Cheapest in

November

Average price

$362
Provider with most accurate pricing for Kansas City-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Kansas City-Boise Air Term. Gowen Fld flights.
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From Missouri to Idaho
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One-way flight from Missouri to Idaho
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High demand for flights, 5% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Missouri to Idaho

Cheapest flights from Missouri to Idaho
Explore the most affordable flight options available from Missouri to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

This CheapOair deal was found by Cheapflights users on 4/17. 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.
Wed 5/148:15 pmSTL - BOI
1 stop18h 22mFrontier
Sun 5/182:27 pmBOI - STL
1 stop17h 42mFrontier
Deal found 4/17$187
This Delta deal was found by Cheapflights users on 4/16. 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 8/306:40 amMCI - BOI
1 stop6h 33mDelta
Tue 9/95:40 amBOI - MCI
1 stop8h 19mDelta
Deal found 4/16$267
This American Airlines deal was found by Cheapflights users on 4/17. 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 8/306:14 amMCI - BOI
1 stop7h 22mAmerican Airlines
Sun 9/71:41 pmBOI - MCI
1 stop7h 39mAmerican Airlines
Deal found 4/17$276
This American Airlines deal was found by Cheapflights users on 4/17. 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 9/135:35 amSTL - BOI
1 stop7h 59mAmerican Airlines
Sat 9/201:40 pmBOI - STL
1 stop9h 07mAmerican Airlines
Deal found 4/17$287
This Delta deal was found by Cheapflights users on 4/17. 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 5/147:30 amSTL - BOI
2 stops12h 39mDelta
Sun 5/185:40 pmBOI - STL
1 stop6h 19mDelta
Deal found 4/17$296
This American Airlines deal was found by Cheapflights users on 4/16. 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 5/147:11 amMCI - GEG
1 stop7h 14mAmerican Airlines
Wed 5/213:18 pmGEG - MCI
1 stop6h 27mAmerican Airlines
Deal found 4/16$299
This American Airlines deal was found by Cheapflights users on 4/17. 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.
Sun 5/115:19 amSTL - GEG
1 stop9h 06mAmerican Airlines
Wed 5/141:22 pmGEG - STL
1 stop7h 23mAmerican Airlines
Deal found 4/17$299
This Delta deal was found by Cheapflights users on 4/16. 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 5/177:30 amSTL - GEG
2 stops11h 30mDelta
Wed 5/282:10 pmGEG - STL
1 stop7h 16mDelta
Deal found 4/16$302
This Southwest deal was found by Cheapflights users on 4/17. 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.
Sun 5/256:55 amMCI - BOI
1 stop4h 40mSouthwest
Thu 5/295:35 amBOI - MCI
1 stop5h 20mSouthwest
Deal found 4/17$302
This Delta deal was found by Cheapflights users on 4/16. 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.
Sun 6/295:45 amMCI - GEG
1 stop8h 14mDelta
Thu 7/35:45 amGEG - MCI
1 stop5h 38mDelta
Deal found 4/16$303
This Hawaiian Airlines deal was found by Cheapflights users on 4/16. 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 9/183:17 pmSTL - BOI
1 stop8h 28mHawaiian Airlines
Mon 9/226:35 amBOI - STL
1 stop6h 42mHawaiian Airlines
Deal found 4/16$306
This Southwest deal was found by Cheapflights users on 4/17. 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 9/85:55 amMCI - GEG
2 stops8h 40mSouthwest
Fri 9/1912:10 pmGEG - MCI
1 stop7h 55mSouthwest
Deal found 4/17$312

Cheapflights Fare Finder

Customize your flight search to find flights from Missouri to Idaho 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 April 17, 2025.
Use the filters below to find and compare flights from Missouri to Idaho that are best for you.

Fly from

Missouri

Fly to

Idaho

Route

Depart

Return

Price

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Wed 5/14

8:15 pm-1:37 pm

1 stop18h 22m

Boise Air Term. Gowen Fld

Sun 5/18

2:27 pm-9:09 am

1 stop17h 42m

$187

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Wed 5/7

5:35 pm-12:22 am

1 stop7h 47m

Boise Air Term. Gowen Fld

Sun 5/11

5:40 pm-12:20 am

1 stop5h 40m

$276

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Wed 5/28

5:20 am-9:46 am

1 stop5h 26m

Boise Air Term. Gowen Fld

Fri 6/6

7:07 pm-5:03 am

1 stop8h 56m

$287

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Wed 5/14

7:30 am-7:09 pm

2 stops12h 39m

Boise Air Term. Gowen Fld

Sun 5/18

5:40 pm-12:59 am

1 stop6h 19m

$296

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Wed 5/14

7:11 am-12:25 pm

1 stop7h 14m

Spokane

Wed 5/21

3:18 pm-11:45 pm

1 stop6h 27m

$299

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Sun 5/11

5:19 am-12:25 pm

1 stop9h 06m

Spokane

Wed 5/14

1:22 pm-10:45 pm

1 stop7h 23m

$299

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Sun 5/25

6:55 am-10:35 am

1 stop4h 40m

Boise Air Term. Gowen Fld

Thu 5/29

5:35 am-11:55 am

1 stop5h 20m

$302

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Sat 5/17

7:30 am-5:00 pm

2 stops11h 30m

Spokane

Wed 5/28

2:10 pm-11:26 pm

1 stop7h 16m

$302

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Sun 6/29

5:45 am-11:59 am

1 stop8h 14m

Spokane

Thu 7/3

5:45 am-1:23 pm

1 stop5h 38m

$303

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Mon 9/8

5:55 am-12:35 pm

2 stops8h 40m

Spokane

Fri 9/19

12:10 pm-10:05 pm

1 stop7h 55m

$312

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 60 results
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Best time to book a flight from Missouri to Idaho

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

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

Currently, October is the cheapest month in which you can book a flight from Missouri to Idaho (average of $314). Flying from Missouri to Idaho in June is currently the most expensive (average of $419). 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 ID?

Find hourly flight availability from Missouri to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2025.

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

Rainfall in Idaho by month

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

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

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

If weather is an important factor for your trip to Idaho, 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 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated April 17, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Missouri to Idaho have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,882 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,382 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

Find useful and relevant information for your journey from Missouri to Idaho. 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 Missouri to Idaho one-way?

    One-way options have recently been found by users for as low as $115 on Spirit Airlines. Other airlines that offer cheap prices include Delta from $134 and United Airlines from $173 one-way.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Missouri to Idaho (average of $314). Flying from Missouri to Idaho in June is currently the most expensive (average of $419). 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 Missouri to Idaho

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

Discover the top 6 airlines that operate flights from Missouri to Idaho. 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$137Average$220FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$171Average$499FlexibilityNo cancel feeOn-time71%
DeltaCheapest$252Average$479FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$552FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$288Average$348FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$298Average$481FlexibilityNo cancel feeOn-time63%

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