HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Missouri

$103+ Cheap flights from Idaho to Missouri

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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — STL
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho to Missouri with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Idaho to Missouri

Cheapest flights from Idaho to Missouri
Explore the most affordable flight options available from Idaho to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

This Frontier deal was found by Cheapflights users on 11/25. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/712:08 pmGEG - MCI
1 stop5h 42mFrontier
Thu 12/1110:52 amMCI - GEG
1 stop7h 14mFrontier
Deal found 11/25$207
This Delta deal was found by Cheapflights users on 11/23. 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 12/135:50 pmJAC - STL
1 stop6h 00mDelta
Wed 12/172:20 pmSTL - JAC
1 stop8h 09mDelta
Deal found 11/23$269
This Delta deal was found by Cheapflights users on 11/25. 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 12/133:13 pmBOI - STL
1 stop7h 14mDelta
Wed 12/178:05 pmSTL - BOI
1 stop5h 37mDelta
Deal found 11/25$297
This Alaska Airlines deal was found by Cheapflights users on 11/24. 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.
Tue 12/168:55 amBOI - MCI
1 stop7h 32mAlaska Airlines
Sun 12/216:00 amMCI - BOI
1 stop17h 26mAlaska Airlines
Deal found 11/24$305
This Frontier deal was found by Cheapflights users on 11/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2812:20 pmGEG - MCI
1 stop5h 13mFrontier
Thu 12/410:52 amMCI - GEG
1 stop7h 14mFrontier
Deal found 11/24$333
This Frontier deal was found by Cheapflights users on 11/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2812:20 pmGEG - MCI
1 stop5h 13mFrontier
Sun 12/711:58 amMCI - GEG
1 stop7h 04mFrontier
Deal found 11/24$337
This Mytrip deal was found by Cheapflights users on 11/25. 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.
Sun 12/79:13 pmGEG - MCI
1 stop15h 39mMultiple Airlines
Thu 12/116:30 amMCI - GEG
1 stop15h 53mMultiple Airlines
Deal found 11/25$340
This Expedia deal was found by Cheapflights users on 11/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:08 pmGEG - MCI
1 stop23h 45mMultiple Airlines
Mon 12/151:34 pmMCI - GEG
1 stop21h 03mMultiple Airlines
Deal found 11/26$349
This American Airlines deal was found by Cheapflights users on 11/26. 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.
Thu 12/117:00 amIDA - MCI
1 stop8h 48mAmerican Airlines
Mon 12/155:35 pmMCI - IDA
1 stop6h 01mAmerican Airlines
Deal found 11/26$381
This American Airlines deal was found by Cheapflights users on 11/25. 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 11/251:25 pmBOI - SGF
1 stop6h 21mAmerican Airlines
Sat 12/67:03 amSGF - BOI
1 stop6h 24mAmerican Airlines
Deal found 11/25$383
This United Airlines deal was found by Cheapflights users on 11/25. 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 12/25:25 amGEG - SGF
1 stop5h 08mUnited Airlines
Sat 12/65:08 pmSGF - GEG
1 stop5h 51mUnited Airlines
Deal found 11/25$383
This Alaska Airlines deal was found by Cheapflights users on 11/25. 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.
Tue 12/96:03 amBOI - MCI
1 stop10h 24mAlaska Airlines
Mon 12/151:34 pmMCI - BOI
1 stop7h 12mAlaska Airlines
Deal found 11/25$386

Cheap flight deals from Idaho to Missouri

Keep the following information in mind while searching for Idaho to Missouri flight deals. Data was last updated November 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$145
(Kiwi.com)

One-way from

$103
(Kiwi.com)

Popular in

January

Cheapest in

September

Average price

$497
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Lambert-St Louis flights.
Search Deals
From Idaho to Missouri
Search Deals
One-way flight from Idaho to Missouri
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($108 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Missouri 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 November 26, 2025.
Use the filters below to find and compare flights from Idaho to Missouri that are best for you.

Fly from

Idaho

Fly to

Missouri

Route

Depart

Return

Price

BoiseKansas City

BOI - MCI

BOIMCI

Boise Air Term. Gowen Fld

Mon 1/12

12:07 pm-7:41 pm

1 stop6h 34m

Kansas City

Sun 1/18

8:27 pm-1:25 pm

1 stop17h 58m

$145

SpokaneKansas City

GEG - MCI

GEGMCI

Spokane

Sun 2/8

12:03 pm-7:46 pm

1 stop5h 43m

Kansas City

Sat 2/14

8:46 pm-11:28 am

1 stop16h 42m

$164

SpokaneKansas City

GEG - MCI

GEGMCI

Spokane

Sun 12/7

12:08 pm-7:50 pm

1 stop5h 42m

Kansas City

Thu 12/11

10:52 am-4:06 pm

1 stop7h 14m

$207

BoiseKansas City

BOI - MCI

BOIMCI

Boise Air Term. Gowen Fld

Fri 1/9

12:07 pm-7:26 pm

1 stop6h 19m

Kansas City

Fri 1/16

8:27 pm-2:08 pm

2 stops42h 41m

$229

BoiseSt. Louis

BOI - STL

BOISTL

Boise Air Term. Gowen Fld

Sat 1/17

7:25 am-9:35 pm

2 stops13h 10m

Lambert-St Louis

Wed 1/21

6:40 am-4:17 pm

2 stops10h 37m

$256

SpokaneSt. Louis

GEG - STL

GEGSTL

Spokane

Tue 1/20

12:55 pm-11:37 pm

1 stop8h 42m

Lambert-St Louis

Mon 2/2

6:40 am-12:07 pm

1 stop7h 27m

$267

JacksonSt. Louis

JAC - STL

JACSTL

Jackson Hole

Sat 12/13

5:50 pm-12:50 am

1 stop6h 00m

Lambert-St Louis

Wed 12/17

2:20 pm-9:29 pm

1 stop8h 09m

$269

SpokaneKansas City

GEG - MCI

GEGMCI

Spokane

Wed 2/25

7:05 am-1:55 pm

1 stop28h 50m

Kansas City

Sat 3/21

7:00 am-12:13 am

1 stop19h 13m

$287

BoiseKansas City

BOI - MCI

BOIMCI

Boise Air Term. Gowen Fld

Tue 3/3

6:20 pm-11:59 pm

1 stop4h 39m

Kansas City

Wed 3/4

6:23 am-1:59 pm

1 stop8h 36m

$287

BoiseKansas City

BOI - MCI

BOIMCI

Boise Air Term. Gowen Fld

Fri 1/16

1:40 pm-11:23 pm

1 stop8h 43m

Kansas City

Sun 1/18

7:00 am-1:00 pm

1 stop7h 00m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/24

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Idaho to Missouri

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

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

Currently, April is the cheapest month in which you can book a flight from Idaho to Missouri (average of $113). Flying from Idaho to Missouri in November is currently the most expensive (average of $289). 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 ID to MO?

Find hourly flight availability from Idaho to Missouri. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 26, 2025.

It’s optimal to fly from Idaho to Missouri in the evening. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Idaho to Missouri?

Use this chart to determine the cheapest time to fly round-trip from Idaho to Missouri. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Idaho to Missouri flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Idaho to Missouri?

Reviews of airlines servicing Missouri

Get insights into the airlines that provide service to Missouri. 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 Missouri. Reviews last updated November 26, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Idaho to Missouri 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
11,363 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Alaska Airlines
8.0
Very good
11,363 reviews
Alaska Airlines
8.0
Very good
11,363 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Southwest
8.0
Very good
4,254 reviews
Alaska Airlines
8.0
Very good
11,363 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Delta
7.9
Good
8,003 reviews
Alaska Airlines
8.0
Very good
11,363 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
United Airlines
7.4
Good
9,050 reviews
Alaska Airlines
8.0
Very good
11,363 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
American Airlines
7.2
Good
11,037 reviews
Alaska Airlines
8.0
Very good
11,363 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.

Related info for your journey

Find useful and relevant information for your journey from Idaho to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Idaho to Missouri?

    Frontier, Delta, and United Airlines can get you from Idaho to Missouri in just under 5h 16m. Your travel time can differ by up to 7h 54m. The distance from Idaho to Missouri is about 1071 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Idaho to Missouri one-way?

    The cheapest airlines for a one-way flight from Idaho to Missouri are Alaska Airlines ($143), Delta ($148), and American Airlines ($149).

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Idaho to Missouri (average of $113). Flying from Idaho to Missouri in November is currently the most expensive (average of $289). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Fort Lauderdale flights
John F Kennedy Intl to Fort Lauderdale flights
Newark to Miami flights
John F Kennedy Intl to Miami flights
Los Angeles to John F Kennedy Intl flights
LaGuardia to Fort Lauderdale flights
LaGuardia to Miami flights
Dallas/Fort Worth to John F Kennedy Intl flights
John F Kennedy Intl to Los Angeles flights
Dallas/Fort Worth to LaGuardia flights
John F Kennedy Intl to Orlando flights
John F Kennedy Intl to Las Vegas flights
Dallas/Fort Worth to Newark flights
San Francisco to John F Kennedy Intl flights
John F Kennedy Intl to Dallas/Fort Worth flights
Newark to West Palm Beach flights
LaGuardia to Dallas/Fort Worth flights
Newark to Dallas/Fort Worth flights
Fort Lauderdale to Newark flights
Newark to Las Vegas flights
John F Kennedy Intl to West Palm Beach flights
Los Angeles to Newark flights
Newark to Orlando flights
John F Kennedy Intl to San Francisco flights
Seattle to Los Angeles flights
San Francisco to Newark flights
Dallas/Fort Worth to Las Vegas flights
Atlanta to John F Kennedy Intl flights
Orlando to John F Kennedy Intl flights
O'Hare Intl to Las Vegas flights
Los Angeles to Honolulu flights
Los Angeles to Seattle flights
Los Angeles to LaGuardia flights
Miami to John F Kennedy Intl flights
O'Hare Intl to John F Kennedy Intl flights
LaGuardia to Hobby flights
Atlanta to LaGuardia flights
Newark to Los Angeles flights
Fort Lauderdale to LaGuardia flights
Newark to Hobby flights
Hobby to John F Kennedy Intl flights
San Francisco to Las Vegas flights
Dulles Intl to Dallas/Fort Worth flights
LaGuardia to Orlando flights
Hobby to LaGuardia flights
Seattle to Las Vegas flights
Hobby to Newark flights
Miami to Newark flights
Newark to Tampa flights
Reagan-National to Miami flights

Top 5 airlines flying from Idaho to Missouri

Discover the top 5 airlines that operate flights from Idaho to Missouri. 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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$159Average$364FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$226Average$386FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$261Average$407FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$278Average$449FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$286Average$561FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.