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Idaho Falls

$139+ 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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — IDA
Apr 29 — May 61
Tue 4/29
Tue 5/6
1 adult, Economy
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Cheap 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 April 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$351
(United Airlines)

One-way from

$139
(Trip.com)

Popular in

October

Cheapest in

January

Average price

$500
Provider with most accurate pricing for Kansas City-Idaho Falls Fanning Field flight deals.
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Provider most trusted by Cheapflights users for Kansas City-Idaho Falls Fanning Field flights.
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From Missouri to Idaho Falls Fanning Field
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One-way flight from Missouri to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 10% potential increase in price ($69 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find 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 April 24, 2025.

This United Airlines deal was found by Cheapflights users on 4/21. 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 6/255:20 pmMCI - IDA
1 stop6h 31mUnited Airlines
Wed 7/24:13 pmIDA - MCI
1 stop6h 18mUnited Airlines
Deal found 4/21$351
This Delta deal was found by Cheapflights users on 4/23. 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.
Fri 7/42:30 pmMCI - IDA
1 stop4h 42mDelta
Tue 7/87:00 pmIDA - MCI
1 stop4h 20mDelta
Deal found 4/23$394
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Sat 5/107:00 amSTL - IDA
1 stop6h 29mAmerican Airlines
Fri 5/161:02 pmIDA - STL
1 stop5h 27mAmerican Airlines
Deal found 4/22$473
This Delta deal was found by Cheapflights users on 4/21. 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.
Thu 6/52:15 pmSTL - IDA
2 stops9h 36mDelta
Mon 6/96:52 pmIDA - STL
1 stop4h 51mDelta
Deal found 4/21$523
This United Airlines deal was found by Cheapflights users on 4/22. 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 5/103:43 pmSTL - IDA
2 stops8h 02mUnited Airlines
Fri 5/162:40 pmIDA - STL
1 stop5h 21mUnited Airlines
Deal found 4/22$546
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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.
Wed 6/255:00 amMCI - IDA
2 stops11h 22mAlaska Airlines
Wed 7/24:03 pmIDA - MCI
2 stops23h 53mAlaska Airlines
Deal found 4/21$796
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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.
Wed 6/189:24 amSTL - IDA
2 stops14h 15mAlaska Airlines
Fri 6/276:15 amIDA - STL
2 stops24h 53mAlaska Airlines
Deal found 4/22$844

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 April 24, 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

Wed 6/25

5:20 pm-10:51 pm

1 stop6h 31m

Idaho Falls Fanning Field

Wed 7/2

4:13 pm-11:31 pm

1 stop6h 18m

$351

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Fri 7/4

2:30 pm-6:12 pm

1 stop4h 42m

Idaho Falls Fanning Field

Tue 7/8

7:00 pm-12:20 am

1 stop4h 20m

$394

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Sat 5/10

7:00 am-12:29 pm

1 stop6h 29m

Idaho Falls Fanning Field

Fri 5/16

1:02 pm-7:29 pm

1 stop5h 27m

$473

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Thu 6/5

2:15 pm-10:51 pm

2 stops9h 36m

Idaho Falls Fanning Field

Mon 6/9

6:52 pm-12:43 am

1 stop4h 51m

$523

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Sat 5/10

3:43 pm-10:45 pm

2 stops8h 02m

Idaho Falls Fanning Field

Fri 5/16

2:40 pm-9:01 pm

1 stop5h 21m

$546

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Wed 6/25

5:00 am-3:22 pm

2 stops11h 22m

Idaho Falls Fanning Field

Wed 7/2

4:03 pm-4:56 pm

2 stops23h 53m

$796

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Wed 6/18

9:24 am-10:39 pm

2 stops14h 15m

Idaho Falls Fanning Field

Fri 6/27

6:15 am-8:08 am

2 stops24h 53m

$844

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Wed 5/21

8:15 pm-5:06 pm

1 stop21h 51m

$139

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Sat 6/7

5:00 pm-10:55 pm

1 stop6h 55m

$164

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Wed 7/9

6:40 am-10:33 am

1 stop4h 53m

$176

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 17 results
1
2

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, October is the cheapest month in which you can book a flight from Missouri to Idaho Falls (average of $380). Flying from Missouri to Idaho Falls in July is currently the most expensive (average of $628). 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.

Rainfall in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho Falls ranges from 0.6 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Idaho Falls when rainfall is around 0.6 in.

Temperature in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. 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 Falls. Reviews last updated April 24, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and Hawaiian Airlines from Missouri to Idaho Falls. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,918 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,918 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,393 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,685 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $164. Hawaiian Airlines flights start at $229 while deals on United Airlines start at $259 one-way.

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

    The most popular route from Missouri to Idaho Falls is Lambert-St Louis - Idaho Falls Fanning Field. You may also consider Kansas City - 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, October is the cheapest month in which you can book a flight from Missouri to Idaho Falls (average of $380). Flying from Missouri to Idaho Falls in July is currently the most expensive (average of $628). 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 Missouri?

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

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Top 3 airlines flying from Missouri to Idaho Falls

Discover the top 3 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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$305Average$645FlexibilityNo cancel feeOn-time71%
DeltaCheapest$314Average$575FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$352Average$593FlexibilityNo cancel feeOn-time69%

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