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Idaho

$128+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BOI
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Round-trip from

$288
(Mytrip)

One-way from

$128
(Alaska Airlines)
From Missouri to Idaho
Search Deals
One-way flight from Missouri to Idaho
Search Deals

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 March 28, 2025.

This Mytrip deal was found by Cheapflights users on 3/27. 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 5/14:57 pmMCI - BOI
2 stops21h 00mSpirit Airlines
Mon 5/51:52 pmBOI - MCI
2 stops25h 10mSpirit Airlines
Deal found 3/27$288
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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 5/17:00 amMCI - BOI
1 stop6h 16mHawaiian Airlines
Mon 5/52:41 pmBOI - MCI
1 stop8h 18mHawaiian Airlines
Deal found 3/27$296
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 9/184:55 pmMCI - GEG
1 stop8h 16mAlaska Airlines
Mon 9/223:10 pmGEG - MCI
1 stop6h 49mAlaska Airlines
Deal found 3/27$306
This American Airlines deal was found by Cheapflights users on 3/27. 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 4/226:00 pmMCI - GEG
1 stop6h 59mAmerican Airlines
Sat 4/263:21 pmGEG - MCI
1 stop6h 15mAmerican Airlines
Deal found 3/27$307
This Delta deal was found by Cheapflights users on 3/27. 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 5/236:05 pmSTL - GEG
1 stop7h 10mDelta
Mon 5/264:56 pmGEG - STL
1 stop6h 03mDelta
Deal found 3/27$307
This Delta deal was found by Cheapflights users on 3/27. 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 5/410:00 amMCI - BOI
1 stop5h 35mDelta
Mon 5/55:59 pmBOI - MCI
1 stop5h 15mDelta
Deal found 3/27$316
This Delta deal was found by Cheapflights users on 3/27. 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 4/116:00 amSGF - BOI
1 stop7h 44mDelta
Tue 4/152:15 pmBOI - SGF
1 stop7h 01mDelta
Deal found 3/27$319
This American Airlines deal was found by Cheapflights users on 3/27. 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 6/185:29 pmSTL - GEG
1 stop7h 51mAmerican Airlines
Sat 7/51:39 pmGEG - STL
1 stop8h 10mAmerican Airlines
Deal found 3/27$327
This Delta deal was found by Cheapflights users on 3/27. 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 7/319:00 amMCI - GEG
1 stop6h 17mDelta
Mon 8/45:00 pmGEG - MCI
1 stop5h 20mDelta
Deal found 3/27$333
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 9/133:17 pmSTL - BOI
1 stop9h 42mAlaska Airlines
Sat 9/204:29 pmBOI - STL
1 stop6h 30mAlaska Airlines
Deal found 3/27$336
This American Airlines deal was found by Cheapflights users on 3/27. 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 6/115:00 amMCI - BOI
1 stop8h 44mAmerican Airlines
Wed 6/185:16 pmBOI - MCI
1 stop5h 18mAmerican Airlines
Deal found 3/27$346
This American Airlines deal was found by Cheapflights users on 3/27. 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 5/218:09 amSTL - BOI
1 stop6h 11mAmerican Airlines
Sun 5/251:50 pmBOI - STL
1 stop9h 08mAmerican Airlines
Deal found 3/27$347

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 March 28, 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

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Thu 5/1

4:57 pm-12:57 pm

2 stops21h 00m

Boise Air Term. Gowen Fld

Mon 5/5

1:52 pm-4:02 pm

2 stops25h 10m

$288

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Thu 5/1

7:00 am-12:16 pm

1 stop6h 16m

Boise Air Term. Gowen Fld

Mon 5/5

2:41 pm-11:59 pm

1 stop8h 18m

$296

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Thu 9/18

4:55 pm-11:11 pm

1 stop8h 16m

Spokane

Mon 9/22

3:10 pm-11:59 pm

1 stop6h 49m

$306

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Fri 5/16

6:05 pm-11:38 pm

1 stop7h 33m

Spokane

Sun 5/18

4:56 pm-12:20 am

1 stop5h 24m

$307

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Fri 5/23

6:05 pm-11:15 pm

1 stop7h 10m

Spokane

Mon 5/26

4:56 pm-12:59 am

1 stop6h 03m

$307

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Sun 5/4

10:00 am-2:35 pm

1 stop5h 35m

Boise Air Term. Gowen Fld

Mon 5/5

5:59 pm-12:14 am

1 stop5h 15m

$316

SpringfieldBoise

SGF - BOI

SGFBOI

Springfield-Branson

Fri 4/11

6:00 am-12:44 pm

1 stop7h 44m

Boise Air Term. Gowen Fld

Tue 4/15

2:15 pm-10:16 pm

1 stop7h 01m

$319

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Wed 6/18

5:29 pm-11:20 pm

1 stop7h 51m

Spokane

Sat 7/5

1:39 pm-11:49 pm

1 stop8h 10m

$327

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sat 9/13

3:17 pm-11:59 pm

1 stop9h 42m

Boise Air Term. Gowen Fld

Sat 9/20

4:29 pm-11:59 pm

1 stop6h 30m

$336

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Wed 6/11

5:00 am-12:44 pm

1 stop8h 44m

Boise Air Term. Gowen Fld

Wed 6/18

5:16 pm-11:34 pm

1 stop5h 18m

$346

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 55 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 $421). 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 March 28, 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 March 28, 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
4,274 reviews

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,274 reviews
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,897 reviews
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Hawaiian Airlines
7.9
Good
2,336 reviews
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,274 reviews

Entertainment

7.6

Overall

8.1

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 $128 on Alaska Airlines. Other airlines that offer cheap prices include Spirit Airlines from $140 and American Airlines from $198 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 $421). 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$139Average$233FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$196Average$508FlexibilityNo cancel feeOn-time71%
DeltaCheapest$252Average$477FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$569FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$302Average$494FlexibilityNo cancel feeOn-time63%
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