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Idaho

$117+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BOI
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
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 julio 31, 2025.

Round-trip from

$229
(American Airlines)

One-way from

$117
(FlightHub)

Popular in

July

Cheapest in

November

Average price

$466
From Missouri to Idaho
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One-way flight from Missouri to Idaho
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Highest demand for flights based on searches. 2% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 31, 2025.

This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/272:57 pmMCI - JAC
1 stop6h 47mAmerican Airlines
jue. 10/24:08 pmJAC - MCI
1 stop5h 17mAmerican Airlines
Deal found 7/29$229
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/137:55 pmSTL - GEG
1 stop17h 03mFrontier
dom. 9/2111:53 amGEG - STL
1 stop19h 13mFrontier
Deal found 7/30$235
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/67:29 pmSTL - BOI
1 stop17h 17mFrontier
dom. 8/1012:36 pmBOI - STL
1 stop19h 35mFrontier
Deal found 7/30$237
This Delta deal was found by Cheapflights users on 7/29. 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.
vie. 9/266:40 amMCI - JAC
1 stop5h 05mDelta
jue. 10/211:40 amJAC - MCI
1 stop4h 28mDelta
Deal found 7/29$237
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/276:00 amSTL - GEG
1 stop8h 43mAlaska Airlines
mié. 9/37:44 pmGEG - STL
1 stop16h 55mAlaska Airlines
Deal found 7/30$252
This Delta deal was found by Cheapflights users on 7/30. 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.
sáb. 9/277:40 amSTL - GEG
1 stop6h 15mDelta
mar. 9/302:23 pmGEG - STL
1 stop6h 46mDelta
Deal found 7/30$253
This Southwest deal was found by Cheapflights users on 7/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/94:50 pmSTL - GEG
1 stop7h 40mSouthwest
mar. 9/166:15 amGEG - STL
2 stops14h 00mSouthwest
Deal found 7/30$264
This Mytrip deal was found by Cheapflights users on 7/31. 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.
dom. 9/72:55 pmMCI - GEG
1 stop7h 21mMultiple Airlines
jue. 9/189:06 pmGEG - MCI
1 stop14h 54mMultiple Airlines
Deal found 7/31$267
This Southwest deal was found by Cheapflights users on 7/31. 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.
mar. 9/96:55 amMCI - BOI
1 stop5h 50mSouthwest
sáb. 9/205:10 amBOI - MCI
1 stop4h 15mSouthwest
Deal found 7/31$267
This American Airlines deal was found by Cheapflights users on 7/31. 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.
sáb. 8/302:51 pmMCI - BOI
1 stop6h 19mAmerican Airlines
lun. 9/81:57 pmBOI - MCI
1 stop5h 46mAmerican Airlines
Deal found 7/31$273
This Hawaiian Airlines deal was found by Cheapflights users on 7/30. 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.
sáb. 9/133:35 pmSTL - BOI
1 stop9h 33mHawaiian Airlines
sáb. 9/206:35 amBOI - STL
1 stop7h 04mHawaiian Airlines
Deal found 7/30$278
This Hawaiian Airlines deal was found by Cheapflights users on 7/31. 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.
lun. 9/87:00 amMCI - BOI
1 stop9h 00mHawaiian Airlines
lun. 9/154:34 pmBOI - MCI
1 stop6h 25mHawaiian Airlines
Deal found 7/31$278

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 julio 31, 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 CityJackson

MCI - JAC

MCIJAC

Kansas City

sáb. 9/27

2:57 pm-8:44 pm

1 stop6h 47m

Jackson Hole

jue. 10/2

4:08 pm-10:25 pm

1 stop5h 17m

$229

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

sáb. 9/13

7:55 pm-10:58 am

1 stop17h 03m

Spokane

dom. 9/21

11:53 am-9:06 am

1 stop19h 13m

$235

Kansas CityJackson

MCI - JAC

MCIJAC

Kansas City

vie. 9/26

6:40 am-10:45 am

1 stop5h 05m

Jackson Hole

jue. 10/2

11:40 am-5:08 pm

1 stop4h 28m

$237

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

jue. 9/18

7:55 pm-11:37 am

1 stop16h 42m

Boise Air Term. Gowen Fld

vie. 9/26

12:22 pm-9:06 am

1 stop19h 44m

$245

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

mié. 8/27

6:00 am-12:43 pm

1 stop8h 43m

Spokane

mié. 9/3

7:44 pm-2:39 pm

1 stop16h 55m

$252

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

sáb. 9/27

7:40 am-11:55 am

1 stop6h 15m

Spokane

mar. 9/30

2:23 pm-11:09 pm

1 stop6h 46m

$253

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

mar. 9/9

4:50 pm-10:30 pm

1 stop7h 40m

Spokane

mar. 9/16

6:15 am-10:15 pm

2 stops14h 00m

$264

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

dom. 9/7

2:55 pm-8:16 pm

1 stop7h 21m

Spokane

jue. 9/18

9:06 pm-2:00 pm

1 stop14h 54m

$267

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

mar. 9/9

6:55 am-11:45 am

1 stop5h 50m

Boise Air Term. Gowen Fld

sáb. 9/20

5:10 am-10:25 am

1 stop4h 15m

$267

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

sáb. 8/30

2:51 pm-8:10 pm

1 stop6h 19m

Boise Air Term. Gowen Fld

lun. 9/8

1:57 pm-8:43 pm

1 stop5h 46m

$273

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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 $398). 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 julio 31, 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.

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 julio 31, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Missouri to Idaho by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 $117 on Frontier. Other airlines that offer cheap prices include United Airlines from $132 and American Airlines from $134 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 $398). 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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$137Average$177FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$196Average$495FlexibilityNo cancel feeOn-time71%
DeltaCheapest$197Average$422FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$216Average$390FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$236Average$529FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$290Average$429FlexibilityNo cancel feeOn-time63%

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