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Missouri

$139+ Cheap flights from Idaho Falls (IDA) 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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — STL
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap flight deals from Idaho Falls to Missouri

Cheapest flights from Idaho Falls to Missouri
Explore the most affordable flight options available from Idaho Falls to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This Orbitz deal was found by Cheapflights users on 2/2. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:00 am
IDA
-
MCI
1 stop6h 29m
Alaska Airlines
Tue 4/76:15 am
MCI
-
IDA
1 stop11h 04m
Alaska Airlines
Deal found 2/2$278
This Delta deal was found by Cheapflights users on 2/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/306:55 pm
IDA
-
STL
1 stop4h 26m
Delta
Sat 4/47:15 am
STL
-
IDA
1 stop6h 12m
Delta
Deal found 2/1$279
This United Airlines deal was found by Cheapflights users on 2/3. 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 3/255:30 pm
IDA
-
MCI
1 stop4h 45m
United Airlines
Tue 3/316:00 am
MCI
-
IDA
1 stop4h 53m
United Airlines
Deal found 2/3$279
This United Airlines deal was found by Cheapflights users on 2/2. 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 4/35:20 pm
IDA
-
MCI
1 stop5h 06m
United Airlines
Wed 4/86:00 am
MCI
-
IDA
1 stop4h 53m
United Airlines
Deal found 2/2$294
This Delta deal was found by Cheapflights users on 2/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/306:55 pm
IDA
-
MCI
1 stop4h 51m
Delta
Sat 4/412:17 pm
MCI
-
IDA
2 stops6h 58m
Delta
Deal found 2/1$299
This Expedia deal was found by Cheapflights users on 2/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:00 am
IDA
-
STL
1 stop7h 51m
Alaska Airlines
Mon 4/67:00 am
STL
-
IDA
1 stop10h 19m
Alaska Airlines
Deal found 2/1$308
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/84:00 pm
IDA
-
MCI
1 stop22h 58m
Alaska Airlines
Thu 9/177:56 pm
MCI
-
IDA
1 stop20h 33m
Alaska Airlines
Deal found 2/1$309
This Delta deal was found by Cheapflights users on 2/2. 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 4/16:55 pm
IDA
-
MCI
1 stop4h 51m
Delta
Mon 4/66:40 am
MCI
-
IDA
1 stop6h 47m
Delta
Deal found 2/2$329
This United Airlines deal was found by Cheapflights users on 2/3. 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 2/185:33 pm
IDA
-
MCI
1 stop4h 44m
United Airlines
Sun 2/225:54 am
MCI
-
IDA
1 stop4h 54m
United Airlines
Deal found 2/3$333
This United Airlines deal was found by Cheapflights users on 2/3. 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.
Thu 6/46:03 pm
IDA
-
STL
1 stop4h 55m
United Airlines
Mon 6/85:15 am
STL
-
IDA
1 stop5h 40m
United Airlines
Deal found 2/3$337
This American Airlines deal was found by Cheapflights users on 2/3. 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 9/812:46 pm
IDA
-
MCI
1 stop7h 02m
American Airlines
Thu 9/175:46 am
MCI
-
IDA
1 stop7h 26m
American Airlines
Deal found 2/3$344
This Expedia deal was found by Cheapflights users on 2/4. 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.
Mon 8/246:15 am
IDA
-
MCI
1 stop7h 28m
Alaska Airlines
Fri 8/283:34 pm
MCI
-
IDA
1 stop8h 05m
Alaska Airlines
Deal found 2/4$349

Find flight deals from Idaho Falls to Missouri

Keep the following information in mind while searching for Idaho Falls to Missouri flight deals. Data was last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$278
(Orbitz)

One-way from

$139
(Expedia)

Popular in

January

Cheapest in

August

Average price

$421
Provider with most accurate pricing for Idaho Falls Fanning Field-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Lambert-St Louis flights.
Search Deals
From Idaho Falls Fanning Field to Missouri
Search Deals
One-way flight from Idaho Falls Fanning Field to Missouri
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho Falls 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 February 4, 2026.
Use the filters below to find and compare flights from Idaho Falls to Missouri that are best for you.

Fly from

Idaho Falls

Fly to

Missouri

Route

Depart

Return

Price

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Thu 4/2

6:00 am-1:29 pm

1 stop6h 29m

Kansas City

Tue 4/7

6:15 am-4:19 pm

1 stop11h 04m

$278

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Fri 4/3

4:59 pm-1:29 pm

1 stop19h 30m

Kansas City

Tue 4/7

6:15 am-4:19 pm

1 stop11h 04m

$278

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Mon 3/30

6:55 pm-12:21 am

1 stop4h 26m

Lambert-St Louis

Sat 4/4

7:15 am-12:27 pm

1 stop6h 12m

$279

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Wed 3/25

5:30 pm-11:15 pm

1 stop4h 45m

Kansas City

Tue 3/31

6:00 am-9:53 am

1 stop4h 53m

$279

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Mon 3/30

6:55 pm-12:46 am

1 stop4h 51m

Kansas City

Sat 4/4

2:40 pm-6:15 pm

1 stop4h 35m

$279

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Fri 4/3

5:20 pm-11:26 pm

1 stop5h 06m

Kansas City

Wed 4/8

6:00 am-9:53 am

1 stop4h 53m

$294

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Wed 4/1

6:00 am-2:51 pm

1 stop7h 51m

Lambert-St Louis

Mon 4/6

7:00 am-4:19 pm

1 stop10h 19m

$308

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Thu 4/2

6:55 pm-12:46 am

1 stop4h 51m

Kansas City

Mon 4/6

6:40 am-12:27 pm

1 stop6h 47m

$329

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Wed 2/18

5:33 pm-11:17 pm

1 stop4h 44m

Kansas City

Sun 2/22

5:54 am-9:48 am

1 stop4h 54m

$333

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Thu 6/4

6:03 pm-11:58 pm

1 stop4h 55m

Lambert-St Louis

Mon 6/8

5:15 am-9:55 am

1 stop5h 40m

$337

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 42 results
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Best time to book a flight from Idaho Falls to Missouri

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

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

Currently, March is the cheapest month in which you can book a flight from Idaho Falls to Missouri (average of $188). Flying from Idaho Falls to Missouri in December is currently the most expensive (average of $380). 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.

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 February 4, 2026.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Idaho Falls to Missouri have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,144 reviews

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,144 reviews
Delta
7.9
Good
8,144 reviews

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,236 reviews
Delta
7.9
Good
8,144 reviews

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,222 reviews
Delta
7.9
Good
8,144 reviews

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.2

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls to Missouri. 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 from for flights from Idaho Falls to Missouri?

    Most people fly from Idaho Falls Fanning Field (IDA) if they book a flight from Idaho Falls to Missouri. Idaho Falls Fanning Field is conveniently located just 3.8 mi from Idaho Falls’s city center.

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

    There are many flights that can get you from Idaho Falls to Missouri in 4h 45m. Fly via Alaska Airlines, United Airlines, or Delta to get the fastest option. Airlines will cover a distance of 942 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Most travelers choose Idaho Falls Fanning Field - Kansas City, Idaho Falls Fanning Field - Springfield-Branson or Idaho Falls Fanning Field - Lambert-St Louis when deciding on the best route from Idaho Falls to Missouri.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Idaho Falls to Missouri (average of $188). Flying from Idaho Falls to Missouri in December is currently the most expensive (average of $380). 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 Idaho Falls to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Idaho Falls to Missouri

Discover the top 3 airlines that operate flights from Idaho Falls 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 February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$346FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$326Average$384FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$354Average$568FlexibilityNo cancel feeOn-time69%

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