HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Missouri

$151+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — STL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho Falls 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.

Cheap 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 June 12, 2025.

Round-trip from

$330
(Alaska Airlines)

One-way from

$151
(Delta)

Popular in

October

Cheapest in

May

Average price

$500
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. 19% potential increase in price ($153 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find 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 June 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 8/276:13 amIDA - MCI
1 stop7h 29mAlaska Airlines
Sat 9/67:00 amMCI - IDA
1 stop9h 23mAlaska Airlines
Deal found 6/12$330
This Delta deal was found by Cheapflights users on 6/12. 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 8/276:52 pmIDA - MCI
1 stop4h 07mDelta
Sat 9/610:28 amMCI - IDA
2 stops8h 43mDelta
Deal found 6/12$335
This American Airlines deal was found by Cheapflights users on 6/11. 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 11/151:50 pmIDA - STL
1 stop7h 39mAmerican Airlines
Thu 11/205:26 amSTL - IDA
1 stop7h 53mAmerican Airlines
Deal found 6/11$361
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/16:52 pmIDA - STL
1 stop4h 46mDelta
Sat 8/95:00 pmSTL - IDA
1 stop6h 29mDelta
Deal found 6/9$385
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/45:00 amIDA - STL
1 stop6h 46mUnited Airlines
Sun 7/65:15 amSTL - IDA
1 stop5h 29mUnited Airlines
Deal found 6/10$431
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/14:13 pmIDA - MCI
1 stop6h 18mUnited Airlines
Fri 7/41:44 pmMCI - IDA
1 stop4h 41mUnited Airlines
Deal found 6/12$451
This Mytrip deal was found by Cheapflights users on 6/12. 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 8/39:47 amIDA - MCI
2 stops26h 50mMultiple Airlines
Sun 8/102:32 pmMCI - IDA
2 stops29h 01mMultiple Airlines
Deal found 6/12$457
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.
Mon 11/35:00 amIDA - SGF
1 stop14h 51mUnited Airlines
Sun 11/95:07 pmSGF - IDA
1 stop6h 45mUnited Airlines
Deal found 6/9$569

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 June 12, 2025.
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

Wed 8/27

6:13 am-2:42 pm

1 stop7h 29m

Kansas City

Sat 9/6

7:00 am-3:23 pm

1 stop9h 23m

$330

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Wed 8/27

6:52 pm-11:59 pm

1 stop4h 07m

Kansas City

Sat 9/6

10:28 am-6:11 pm

2 stops8h 43m

$335

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Sat 11/15

1:50 pm-10:29 pm

1 stop7h 39m

Lambert-St Louis

Thu 11/20

5:26 am-12:19 pm

1 stop7h 53m

$361

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Fri 8/1

6:52 pm-12:38 am

1 stop4h 46m

Lambert-St Louis

Sat 8/9

5:00 pm-10:29 pm

1 stop6h 29m

$385

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Fri 7/4

5:00 am-12:46 pm

1 stop6h 46m

Lambert-St Louis

Sun 7/6

5:15 am-9:44 am

1 stop5h 29m

$431

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Tue 7/1

4:13 pm-11:31 pm

1 stop6h 18m

Kansas City

Fri 7/4

1:44 pm-5:25 pm

1 stop4h 41m

$451

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Sun 8/3

9:47 am-1:37 pm

2 stops26h 50m

Kansas City

Sun 8/10

2:32 pm-6:33 pm

2 stops29h 01m

$457

Idaho FallsSpringfield

IDA - SGF

IDASGF

Idaho Falls Fanning Field

Mon 11/3

5:00 am-8:51 pm

1 stop14h 51m

Springfield-Branson

Sun 11/9

5:07 pm-10:52 pm

1 stop6h 45m

$569

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Thu 7/10

6:52 pm-12:21 am

1 stop4h 29m

$151

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Mon 7/7

6:52 pm-12:38 am

1 stop4h 46m

$310

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 14 results
1
2

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, August is the cheapest month in which you can book a flight from Idaho Falls to Missouri (average of $311). Flying from Idaho Falls to Missouri in March is currently the most expensive (average of $356). 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 IDA to MO?

Find hourly flight availability from Idaho Falls 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 June 12, 2025.

When flying from Idaho Falls to Missouri, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Missouri by month

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

In terms of precipitation, rainfall in Missouri ranges from 1.1 - 5.2 inches per month. May is typically the wettest month, when rainfall can reach 5.2 in. January is typically the driest time to visit Missouri when rainfall is around 1.1 in.

Temperature in Missouri by month

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

If weather is an important factor for your trip to Missouri, 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 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

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 June 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and United Airlines from Idaho Falls to Missouri to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    The cheapest airlines for a one-way flight from Idaho Falls to Missouri are Delta ($151), Alaska Airlines ($379), and United Airlines ($394).

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

    Most travelers choose Idaho Falls Fanning Field - Lambert-St Louis, Idaho Falls Fanning Field - Springfield-Branson or Idaho Falls Fanning Field - Kansas City 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, August is the cheapest month in which you can book a flight from Idaho Falls to Missouri (average of $311). Flying from Idaho Falls to Missouri in March is currently the most expensive (average of $356). 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 Falls to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
Boise to Seattle flights
Boise to Las Vegas flights
Boise to Los Angeles flights
Boise to Denver flights
Boise to O'Hare Intl flights
Spokane to Seattle flights
Boise to San Diego flights
Spokane to Los Angeles flights
Spokane to Denver flights
Spokane to O'Hare Intl flights
Boise to Dallas/Fort Worth flights
Spokane to Las Vegas flights
Spokane to Sky Harbor Intl flights
Boise to San Francisco flights
Boise to Santa Ana flights
Spokane to Dallas/Fort Worth flights
Boise to Sky Harbor Intl flights
Spokane to San Diego flights
Idaho Falls to Seattle flights
Boise to Minneapolis flights
Boise to Boston flights
Boise to John F Kennedy Intl flights
Spokane to San Francisco flights
Spokane to Salt Lake City flights
Boise to Nashville flights
Spokane to John F Kennedy Intl flights
Boise to Orlando flights
Boise to Sacramento flights
Boise to Miami flights
Boise to Honolulu flights
Boise to LaGuardia flights
Spokane to Newark flights
Boise to San Jose flights
Boise to Newark flights
Boise to Portland flights
Boise to Hobby flights
Spokane to Honolulu flights
Spokane to Boise flights
Jackson to Boston flights
Boise to Dulles Intl flights
Jackson to Seattle flights
Spokane to Ontario flights
Boise to Atlanta flights
Boise to Spokane flights
Spokane to Minneapolis flights
Boise to Ontario flights
Spokane to Orlando flights
Boise to Detroit flights
Jackson to Newark flights
Spokane to Nashville flights

Top 2 airlines flying from Idaho Falls to Missouri

Discover the top 2 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$496FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$350Average$590FlexibilityNo 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.