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Idaho

$126+ 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 6/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BOI
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$267
(United Airlines)

One-way from

$126
(Trip.com)

Popular in

December

Cheapest in

November

Average price

$312
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, 6% 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 May 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 May 1, 2025.

This Delta deal was found by Cheapflights users on 4/30. 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 8/305:45 amMCI - BOI
1 stop7h 28mDelta
Tue 9/93:00 pmBOI - MCI
1 stop6h 57mDelta
Deal found 4/30$267
This CheapOair deal was found by Cheapflights users on 4/30. 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 5/218:15 pmSTL - BOI
1 stop16h 36mFrontier
Sun 5/2512:36 pmBOI - STL
1 stop19h 33mFrontier
Deal found 4/30$280
This Hawaiian Airlines deal was found by Cheapflights users on 4/30. 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.
Sat 9/133:35 pmSTL - BOI
1 stop8h 05mHawaiian Airlines
Sat 9/206:35 amBOI - STL
1 stop7h 04mHawaiian Airlines
Deal found 4/30$286
This Delta deal was found by Cheapflights users on 4/30. 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 5/287:30 amSTL - BOI
1 stop5h 24mDelta
Fri 6/611:59 pmBOI - STL
1 stop7h 57mDelta
Deal found 4/30$287
This Delta deal was found by Cheapflights users on 4/29. 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 8/166:40 amMCI - JAC
1 stop5h 04mDelta
Thu 8/216:55 pmJAC - MCI
1 stop4h 25mDelta
Deal found 4/29$289
This United Airlines deal was found by Cheapflights users on 4/29. 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 8/166:00 amMCI - JAC
2 stops8h 48mUnited Airlines
Thu 8/212:50 pmJAC - MCI
1 stop4h 52mUnited Airlines
Deal found 4/29$294
This American Airlines deal was found by Cheapflights users on 5/1. 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 5/165:27 amSGF - GEG
1 stop8h 58mAmerican Airlines
Sun 5/251:22 pmGEG - SGF
1 stop8h 32mAmerican Airlines
Deal found 5/1$294
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Sun 6/16:05 amMCI - BOI
1 stop4h 41mUnited Airlines
Sat 6/75:43 pmBOI - MCI
1 stop4h 46mUnited Airlines
Deal found 4/30$297
This Hawaiian Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 9/36:30 pmSTL - GEG
1 stop7h 29mHawaiian Airlines
Tue 9/93:08 pmGEG - STL
1 stop6h 51mHawaiian Airlines
Deal found 4/29$298
This Delta deal was found by Cheapflights users on 4/29. 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 7/168:50 amSTL - GEG
1 stop6h 27mDelta
Wed 7/306:50 amGEG - STL
1 stop7h 52mDelta
Deal found 4/29$299
This American Airlines deal was found by Cheapflights users on 5/1. 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 5/167:11 amMCI - GEG
1 stop7h 14mAmerican Airlines
Wed 5/211:22 pmGEG - MCI
1 stop7h 29mAmerican Airlines
Deal found 5/1$303
This Southwest deal was found by Cheapflights users on 4/29. 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 9/37:45 amSTL - GEG
2 stops9h 25mSouthwest
Tue 9/96:15 amGEG - STL
1 stop8h 40mSouthwest
Deal found 4/29$304

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 May 1, 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

Sat 8/30

5:45 am-12:13 pm

1 stop7h 28m

Boise Air Term. Gowen Fld

Tue 9/9

3:00 pm-10:57 pm

1 stop6h 57m

$267

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Wed 5/21

8:15 pm-11:51 am

1 stop16h 36m

Boise Air Term. Gowen Fld

Sun 5/25

12:36 pm-9:09 am

1 stop19h 33m

$280

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sat 9/13

3:35 pm-10:40 pm

1 stop8h 05m

Boise Air Term. Gowen Fld

Sat 9/20

6:35 am-2:39 pm

1 stop7h 04m

$286

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Wed 5/28

7:30 am-11:54 am

1 stop5h 24m

Boise Air Term. Gowen Fld

Fri 6/6

11:59 pm-8:56 am

1 stop7h 57m

$287

Kansas CityJackson

MCI - JAC

MCIJAC

Kansas City

Sat 8/16

6:40 am-10:44 am

1 stop5h 04m

Jackson Hole

Thu 8/21

6:55 pm-12:20 am

1 stop4h 25m

$289

Kansas CityJackson

MCI - JAC

MCIJAC

Kansas City

Sat 8/16

6:00 am-1:48 pm

2 stops8h 48m

Jackson Hole

Thu 8/21

2:50 pm-8:42 pm

1 stop4h 52m

$294

SpringfieldSpokane

SGF - GEG

SGFGEG

Springfield-Branson

Fri 5/16

5:27 am-12:25 pm

1 stop8h 58m

Spokane

Sun 5/25

1:22 pm-11:54 pm

1 stop8h 32m

$294

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Sun 6/1

6:05 am-9:46 am

1 stop4h 41m

Boise Air Term. Gowen Fld

Sat 6/7

5:43 pm-11:29 pm

1 stop4h 46m

$297

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Wed 7/16

8:50 am-1:17 pm

1 stop6h 27m

Spokane

Wed 7/30

6:50 am-4:42 pm

1 stop7h 52m

$299

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Fri 5/16

7:11 am-12:25 pm

1 stop7h 14m

Spokane

Wed 5/21

1:22 pm-10:51 pm

1 stop7h 29m

$303

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 59 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 $406). 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 May 1, 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 May 1, 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
9,972 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.1

Food

7.1

Comfort

7.9

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
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.1

Food

7.1

Comfort

7.9

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
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.1

Food

7.1

Comfort

7.9

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.1

Food

7.1

Comfort

7.9

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
2,409 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.1

Food

7.1

Comfort

7.9

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Boarding

8.1

Food

7.1

Comfort

7.9

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 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 $126 on Frontier. Other airlines that offer cheap prices include Delta from $134 and United Airlines from $149 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 $406). 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$137Average$226FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$171Average$487FlexibilityNo cancel feeOn-time71%
DeltaCheapest$252Average$470FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$554FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$288Average$348FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$298Average$477FlexibilityNo cancel feeOn-time63%

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