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Idaho Falls

$160+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — IDA
Jul 10 — Jul 171
Fri 7/10
Fri 7/17
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 June 10, 2026.

This Alaska Airlines deal was found by Cheapflights users on 6/7. 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.
Sat 10/313:11 pm
MCI
-
IDA
1 stop8h 43m
Alaska Airlines
Wed 11/41:53 pm
IDA
-
MCI
1 stop9h 06m
Alaska Airlines
Deal found 6/7$319
This Alaska Airlines deal was found by Cheapflights users on 6/7. 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.
Sat 11/147:00 am
STL
-
IDA
1 stop9h 17m
Alaska Airlines
Wed 11/186:04 am
IDA
-
STL
1 stop7h 11m
Alaska Airlines
Deal found 6/7$319
This United Airlines deal was found by Cheapflights users on 6/9. 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 10/318:00 am
MCI
-
IDA
2 stops10h 22m
United Airlines
Wed 11/45:57 pm
IDA
-
MCI
1 stop4h 40m
United Airlines
Deal found 6/9$324
This Delta deal was found by Cheapflights users on 6/8. 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.
Tue 6/232:55 pm
MCI
-
IDA
1 stop4h 22m
Delta
Mon 6/297:00 pm
IDA
-
MCI
1 stop4h 18m
Delta
Deal found 6/8$344
This Delta deal was found by Cheapflights users on 6/7. 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 6/207:02 am
MCI
-
IDA
1 stop4h 41m
Delta
Mon 6/297:00 pm
IDA
-
MCI
1 stop4h 18m
Delta
Deal found 6/7$364
This United Airlines deal was found by Cheapflights users on 6/7. 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 7/155:10 am
STL
-
IDA
1 stop5h 40m
United Airlines
Wed 7/224:14 pm
IDA
-
STL
1 stop6h 43m
United Airlines
Deal found 6/7$365
This Travelocity deal was found by Cheapflights users on 6/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:00 am
MCI
-
IDA
1 stop9h 20m
Alaska Airlines
Wed 9/26:18 am
IDA
-
MCI
1 stop6h 34m
Alaska Airlines
Deal found 6/9$369
This Expedia deal was found by Cheapflights users on 6/8. 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 8/177:56 pm
STL
-
IDA
1 stop20h 41m
Alaska Airlines
Thu 8/203:57 pm
IDA
-
STL
1 stop24h 13m
Alaska Airlines
Deal found 6/8$369
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/96:00 am
MCI
-
IDA
1 stop4h 50m
United Airlines
Thu 7/164:14 pm
IDA
-
MCI
1 stop6h 11m
United Airlines
Deal found 6/9$386
This United Airlines deal was found by Cheapflights users on 6/5. 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 9/235:10 am
STL
-
IDA
1 stop5h 41m
United Airlines
Sat 9/265:51 pm
IDA
-
STL
1 stop4h 53m
United Airlines
Deal found 6/5$409
This United Airlines deal was found by Cheapflights users on 6/7. 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 11/146:30 am
STL
-
IDA
2 stops11h 52m
United Airlines
Wed 11/182:35 pm
IDA
-
STL
1 stop5h 24m
United Airlines
Deal found 6/7$414
This Alaska Airlines deal was found by Cheapflights users on 6/8. 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.
Fri 9/46:08 pm
STL
-
IDA
1 stop20h 16m
Alaska Airlines
Mon 9/73:57 pm
IDA
-
STL
1 stop24h 13m
Alaska Airlines
Deal found 6/8$419

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 June 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$319
(Alaska Airlines)

One-way from

$160
(Alaska Airlines)

Popular in

June

Cheapest in

August

Average price

$768
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. 10% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
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 June 10, 2026.
Use the filters below to find and compare flights from Missouri to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Sat 10/31

3:11 pm-10:54 pm

1 stop8h 43m

Idaho Falls Fanning Field

Wed 11/4

1:53 pm-11:59 pm

1 stop9h 06m

$319

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Fri 10/16

6:00 am-9:53 am

1 stop4h 53m

Idaho Falls Fanning Field

Mon 10/26

5:57 pm-11:37 pm

1 stop4h 40m

$319

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Sat 11/14

7:00 am-3:17 pm

1 stop9h 17m

Idaho Falls Fanning Field

Wed 11/18

6:04 am-2:15 pm

1 stop7h 11m

$319

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Tue 10/27

3:11 pm-10:54 pm

1 stop8h 43m

Idaho Falls Fanning Field

Sat 10/31

6:09 am-2:17 pm

1 stop7h 08m

$369

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Mon 8/17

7:56 pm-3:37 pm

1 stop20h 41m

Idaho Falls Fanning Field

Thu 8/20

3:57 pm-5:10 pm

1 stop24h 13m

$369

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Wed 7/15

5:10 am-9:50 am

1 stop5h 40m

Idaho Falls Fanning Field

Wed 7/22

4:14 pm-11:57 pm

1 stop6h 43m

$386

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Sat 6/20

7:02 am-10:43 am

1 stop4h 41m

Idaho Falls Fanning Field

Mon 6/29

11:25 am-5:06 pm

1 stop4h 41m

$389

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Sat 10/31

8:00 am-5:22 pm

2 stops10h 22m

Idaho Falls Fanning Field

Wed 11/4

5:57 pm-11:37 pm

1 stop4h 40m

$404

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Wed 9/23

5:10 am-9:51 am

1 stop5h 41m

Idaho Falls Fanning Field

Sat 9/26

5:51 pm-11:44 pm

1 stop4h 53m

$409

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Sun 6/28

7:58 pm-3:37 pm

1 stop20h 39m

Idaho Falls Fanning Field

Sat 7/4

7:15 am-7:01 pm

1 stop10h 46m

$424

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/8

Showing 1-10 of 39 resultsSorted by cheapest first
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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, August is the cheapest month in which you can book a flight from Missouri to Idaho Falls (average of $192). Flying from Missouri to Idaho Falls in May is currently the most expensive (average of $388). 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.

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

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 4h 41m. Airlines will cover a distance of 942 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, August is the cheapest month in which you can book a flight from Missouri to Idaho Falls (average of $192). Flying from Missouri to Idaho Falls in May is currently the most expensive (average of $388). 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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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 June 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$248Average$456FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$252Average$502FlexibilityNo cancel feeOn-time69%

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