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$120+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BOI
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Round-trip from

$240
(Hawaiian Airlines)

One-way from

$120
(Mytrip)
From Missouri to Idaho
Search Deals
One-way flight from Missouri to Idaho
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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 February 20, 2025.

This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/87:00 amMCI - BOI
1 stop7h 52mHawaiian Airlines
Wed 4/232:41 pmBOI - MCI
1 stop8h 18mHawaiian Airlines
Deal found 2/19$240
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/86:00 amMCI - BOI
1 stop4h 47mUnited Airlines
Wed 4/231:31 pmBOI - MCI
2 stops9h 13mUnited Airlines
Deal found 2/19$247
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.
Tue 5/65:27 amSGF - BOI
1 stop8h 02mAmerican Airlines
Tue 5/131:32 pmBOI - SGF
1 stop7h 55mAmerican Airlines
Deal found 2/19$264
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.
Mon 4/215:07 amMCI - BOI
1 stop8h 26mAmerican Airlines
Tue 5/67:05 amBOI - MCI
1 stop8h 17mAmerican Airlines
Deal found 2/19$270
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/65:45 amSGF - BOI
1 stop5h 09mUnited Airlines
Tue 5/135:25 pmBOI - SGF
1 stop5h 05mUnited Airlines
Deal found 2/19$289
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/26:44 amSTL - BOI
1 stop6h 48mAlaska Airlines
Sun 4/69:40 amBOI - STL
1 stop13h 19mAlaska Airlines
Deal found 2/19$303
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.
Wed 4/26:10 pmMCI - IDA
1 stop5h 23mDelta
Sat 4/53:30 pmIDA - MCI
1 stop4h 43mDelta
Deal found 2/19$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 4/226:40 amMCI - GEG
1 stop5h 54mDelta
Sat 4/2610:00 amGEG - MCI
1 stop5h 05mDelta
Deal found 2/19$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.
Sat 5/37:40 amSTL - JAC
1 stop5h 39mDelta
Wed 5/75:30 pmJAC - STL
1 stop6h 07mDelta
Deal found 2/19$305
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/39:40 amSTL - JAC
2 stops12h 37mUnited Airlines
Wed 5/72:35 pmJAC - STL
1 stop5h 26mUnited Airlines
Deal found 2/19$310
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.
Tue 3/113:48 pmSTL - GEG
1 stop7h 25mAmerican Airlines
Sat 3/153:30 pmGEG - STL
1 stop6h 28mAmerican Airlines
Deal found 2/19$317
This Mytrip deal was found by Cheapflights users on 2/18. 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.
Thu 3/65:28 pmMCI - BOI
2 stops20h 04mSpirit Airlines
Mon 3/101:31 pmBOI - MCI
1 stop20h 04mSpirit Airlines
Deal found 2/18$319

Find flights from Missouri to Idaho within your budget

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 February 20, 2025.

Fly from

Missouri

Fly to

Idaho

Route

Depart

Return

Price

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Tue 4/8

7:00 am-1:52 pm

1 stop7h 52m

Boise Air Term. Gowen Fld

Wed 4/23

2:41 pm-11:59 pm

1 stop8h 18m

$240

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Tue 4/8

6:00 am-9:47 am

1 stop4h 47m

Boise Air Term. Gowen Fld

Wed 4/23

1:31 pm-11:44 pm

2 stops9h 13m

$247

SpringfieldBoise

SGF - BOI

SGFBOI

Springfield-Branson

Tue 5/6

5:27 am-12:29 pm

1 stop8h 02m

Boise Air Term. Gowen Fld

Tue 5/13

1:32 pm-10:27 pm

1 stop7h 55m

$264

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Mon 4/21

5:07 am-12:33 pm

1 stop8h 26m

Boise Air Term. Gowen Fld

Tue 5/6

7:05 am-4:22 pm

1 stop8h 17m

$270

SpringfieldBoise

SGF - BOI

SGFBOI

Springfield-Branson

Tue 5/6

5:45 am-4:21 pm

2 stops11h 36m

Boise Air Term. Gowen Fld

Tue 5/13

5:25 pm-11:30 pm

1 stop5h 05m

$295

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Wed 4/2

6:44 am-12:32 pm

1 stop6h 48m

Boise Air Term. Gowen Fld

Sun 4/6

9:40 am-11:59 pm

1 stop13h 19m

$303

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Wed 4/2

6:10 pm-10:33 pm

1 stop5h 23m

Idaho Falls Fanning Field

Sat 4/5

3:30 pm-9:13 pm

1 stop4h 43m

$305

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Tue 4/22

6:40 am-10:34 am

1 stop5h 54m

Spokane

Sat 4/26

10:00 am-5:05 pm

1 stop5h 05m

$305

St. LouisJackson

STL - JAC

STLJAC

Lambert-St Louis

Sat 5/3

7:40 am-12:19 pm

1 stop5h 39m

Jackson Hole

Wed 5/7

5:30 pm-12:37 am

1 stop6h 07m

$305

St. LouisJackson

STL - JAC

STLJAC

Lambert-St Louis

Sat 5/3

9:40 am-9:17 pm

2 stops12h 37m

Jackson Hole

Wed 5/7

2:35 pm-9:01 pm

1 stop5h 26m

$310

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 56 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.

Travel insights for flights from Missouri to Idaho

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

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 $436). 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 February 20, 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 February 20, 2025.
See what other customers who have flown with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

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

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

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
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

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
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

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

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

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
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

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 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 $120 on Spirit Airlines. Other airlines that offer cheap prices include American Airlines from $121 and United Airlines from $126 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 $436). 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 5 airlines flying from Missouri to Idaho

Discover the top 5 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$137Average$233FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$196Average$509FlexibilityNo cancel feeOn-time71%
DeltaCheapest$258Average$496FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$587FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$302Average$466FlexibilityNo cancel feeOn-time63%
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