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Idaho Falls

$210+ Cheap flights from Missouri to Idaho Falls (IDA)

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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — IDA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Missouri to Idaho Falls

Cheapest flights from Missouri to Idaho Falls
Explore the most affordable flight options available from Missouri to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/16. 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.
Fri 12/195:03 pmSGF - IDA
1 stop5h 11mUnited Airlines
Wed 12/2410:45 amIDA - SGF
1 stop4h 37mUnited Airlines
Deal found 12/16$409
This deal was found by Cheapflights users on 12/16. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/229:10 amSGF - IDA
1 stop7h 12mUnited Airlines
Fri 12/265:00 amIDA - SGF
1 stop6h 47mUnited Airlines
Deal found 12/16$489
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:21 pmSGF - IDA
1 stop29h 19mAllegiant Air
Sun 1/46:21 pmIDA - SGF
1 stop15h 20mAllegiant Air
Deal found 12/16$583
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/315:07 pmMCI - IDA
1 stop6h 52mUnited Airlines
Sun 1/42:30 pmIDA - MCI
1 stop5h 00mUnited Airlines
Deal found 12/16$644
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/315:03 pmSGF - IDA
1 stop6h 56mUnited Airlines
Sun 1/42:30 pmIDA - SGF
2 stops47h 08mUnited Airlines
Deal found 12/16$881
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/169:02 amMCI - IDA
1 stop7h 22mUnited Airlines
Tue 12/2310:45 amIDA - MCI
1 stop4h 22mUnited Airlines
Deal found 12/15$936

Find flight deals from Missouri to Idaho Falls

Keep the following information in mind while searching for Missouri to Idaho Falls flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$292
(Alaska Airlines)

One-way from

$210
(Alaska Airlines)

Popular in

November

Cheapest in

January

Average price

$455
Provider with most accurate pricing for Lambert-St Louis-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Idaho Falls Fanning Field flights.
Search Deals
From Missouri to Idaho Falls Fanning Field
Search Deals
One-way flight from Missouri to Idaho Falls Fanning Field
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Idaho Falls 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 December 18, 2025.
Use the filters below to find and compare flights from Missouri to Idaho Falls that are best for you.

Fly from

Missouri

Fly to

Idaho Falls

Route

Depart

Return

Price

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Sat 1/24

3:32 pm-10:59 pm

1 stop8h 27m

Idaho Falls Fanning Field

Wed 1/28

9:00 am-1:50 pm

1 stop27h 50m

$292

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Fri 1/9

2:45 pm-6:18 pm

1 stop28h 33m

Idaho Falls Fanning Field

Tue 1/13

6:58 pm-1:50 pm

1 stop17h 52m

$323

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Sat 1/31

3:32 pm-10:59 pm

1 stop8h 27m

Idaho Falls Fanning Field

Wed 2/4

6:58 pm-1:50 pm

1 stop17h 52m

$323

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Fri 1/30

2:50 pm-10:59 pm

1 stop9h 09m

Idaho Falls Fanning Field

Sat 1/31

6:58 pm-1:54 pm

1 stop17h 56m

$342

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Mon 1/26

2:50 pm-10:59 pm

1 stop9h 09m

Idaho Falls Fanning Field

Thu 1/29

6:58 pm-1:54 pm

1 stop17h 56m

$353

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Wed 2/4

2:50 pm-10:59 pm

1 stop9h 09m

Idaho Falls Fanning Field

Sat 2/7

6:58 pm-1:54 pm

1 stop17h 56m

$357

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Sat 1/31

3:32 pm-10:59 pm

1 stop8h 27m

Idaho Falls Fanning Field

Sat 2/7

6:58 pm-3:05 pm

2 stops19h 07m

$363

SpringfieldIdaho Falls

SGF - IDA

SGFIDA

Springfield-Branson

Sat 2/14

9:03 am-1:30 pm

1 stop5h 27m

Idaho Falls Fanning Field

Wed 2/18

10:45 am-4:21 pm

1 stop4h 36m

$374

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Mon 3/9

6:04 pm-10:20 pm

1 stop5h 16m

Idaho Falls Fanning Field

Fri 3/13

6:59 pm-8:52 am

2 stops12h 53m

$393

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Fri 1/9

8:45 am-1:30 pm

1 stop5h 45m

Idaho Falls Fanning Field

Sun 1/11

2:40 pm-8:58 pm

1 stop5h 18m

$433

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 21 results
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Best time to book a flight from Missouri to Idaho Falls

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

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

Currently, March is the cheapest month in which you can book a flight from Missouri to Idaho Falls (average of $169). Flying from Missouri to Idaho Falls in November is currently the most expensive (average of $328). 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.

Related info for your journey

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

  • What airport do you fly into for flights to Idaho Falls from Missouri?

    Idaho Falls Fanning Field (IDA), located 3.8 mi from the city center, is the airport you fly into when you book flights from Missouri to Idaho Falls.

  • How long is the flight from Missouri to Idaho Falls?

    Departing from Missouri to Idaho Falls will take you 5h 16m. Airlines will cover a distance of 1171 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Missouri to Idaho Falls?

    The most popular route from Missouri to Idaho Falls is Kansas City - Idaho Falls Fanning Field. You may also consider Lambert-St Louis - Idaho Falls Fanning Field or Springfield-Branson - Idaho Falls Fanning Field.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Missouri to Idaho Falls (average of $169). Flying from Missouri to Idaho Falls in November is currently the most expensive (average of $328). 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

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

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Alternative routes for Missouri to Idaho Falls

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Top 2 airlines flying from Missouri to Idaho Falls

Discover the top 2 airlines that operate flights from Missouri to Idaho Falls. 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$192Average$427FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$236Average$584FlexibilityNo cancel feeOn-time69%

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