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Missouri

$194+ Cheap flights from Idaho Falls (IDA) to Missouri

IDA — STL
Oct 1 — Oct 81
Thu 10/1
Thu 10/8
1 adult, Economy
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Cheap flight deals from Idaho Falls to Missouri

Cheapest flights from Idaho Falls to Missouri

Mon 10/196:56 pm -
1 stop4h 48m
Fri 10/232:22 pm -
1 stop4h 54m
Deal found 8/30$329
Sat 12/54:03 pm -
1 stop6h 33m
Wed 12/93:34 pm -
1 stop8h 05m
Deal found 8/27$329
Thu 11/121:11 pm -
2 stops9h 13m
Sun 11/156:00 pm -
1 stop4h 59m
Deal found 8/30$334
Thu 10/84:05 pm -
1 stop6h 39m
Sun 10/116:00 am -
1 stop4h 53m
Deal found 8/29$347
Wed 11/1110:35 am -
2 stops10h 16m
Sun 11/155:45 am -
1 stop5h 08m
Deal found 8/30$349
Fri 10/96:56 pm -
1 stop4h 48m
Tue 10/137:45 am -
1 stop5h 37m
Deal found 8/27$354
Fri 9/254:05 pm -
1 stop6h 39m
Mon 9/284:39 pm -
1 stop5h 15m
Deal found 8/30$371
Sat 10/316:09 am -
1 stop8h 35m
Wed 11/47:00 am -
1 stop9h 18m
Deal found 8/31$374
Fri 9/255:51 pm -
1 stop4h 53m
Mon 9/286:00 am -
1 stop4h 53m
Deal found 8/31$381
Tue 11/1710:35 am -
1 stop5h 22m
Sun 11/228:50 am -
1 stop7h 48m
Deal found 8/31$384
Wed 9/92:25 pm -
1 stop5h 09m
Mon 9/1411:32 am -
1 stop4h 51m
Deal found 8/31$424
Wed 10/72:28 pm -
1 stop5h 16m
Sat 10/106:00 am -
2 stops10h 24m
Deal found 8/29$425

Find flight deals from Idaho Falls to Missouri

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(Delta)

One-way from

$194
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$480
Provider with most accurate pricing for Idaho Falls Fanning Field-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Lambert-St Louis flights.
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From Idaho Falls Fanning Field to Missouri
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One-way flight from Idaho Falls Fanning Field to Missouri
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($133 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Idaho Falls to Missouri that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Idaho FallsKansas City

IDA Idaho Falls Fanning Field - MCI Kansas City

IDAMCI

Idaho Falls Fanning Field

Sat 12/5

4:03 pm-11:36 pm

1 stop6h 33m

Kansas City

Wed 12/9

3:34 pm-10:39 pm

1 stop8h 05m

$329

Idaho FallsKansas City

IDA Idaho Falls Fanning Field - MCI Kansas City

IDAMCI

Idaho Falls Fanning Field

Wed 10/7

2:28 pm-8:44 pm

1 stop5h 16m

Kansas City

Sat 10/10

6:00 am-9:53 am

1 stop4h 53m

$329

Idaho FallsKansas City

IDA Idaho Falls Fanning Field - MCI Kansas City

IDAMCI

Idaho Falls Fanning Field

Wed 11/11

10:35 am-9:51 pm

2 stops10h 16m

Kansas City

Sun 11/15

5:45 am-9:53 am

1 stop5h 08m

$349

Idaho FallsSt. Louis

IDA Idaho Falls Fanning Field - STL Lambert-St Louis

IDASTL

Idaho Falls Fanning Field

Fri 9/25

4:05 pm-11:44 pm

1 stop6h 39m

Lambert-St Louis

Mon 9/28

4:39 pm-8:54 pm

1 stop5h 15m

$371

Idaho FallsSt. Louis

IDA Idaho Falls Fanning Field - STL Lambert-St Louis

IDASTL

Idaho Falls Fanning Field

Sat 10/31

6:09 am-3:44 pm

1 stop8h 35m

Lambert-St Louis

Wed 11/4

7:00 am-3:18 pm

1 stop9h 18m

$374
Quickest round-trip

Idaho FallsKansas City

IDA Idaho Falls Fanning Field - MCI Kansas City

IDAMCI

Idaho Falls Fanning Field

Fri 9/25

5:51 pm-11:44 pm

1 stop4h 53m

Kansas City

Mon 9/28

6:00 am-9:53 am

1 stop4h 53m

$381

Idaho FallsSt. Louis

IDA Idaho Falls Fanning Field - STL Lambert-St Louis

IDASTL

Idaho Falls Fanning Field

Tue 11/17

10:35 am-4:57 pm

1 stop5h 22m

Lambert-St Louis

Sun 11/22

5:00 am-3:38 pm

2 stops11h 38m

$401

Idaho FallsSpringfield

IDA Idaho Falls Fanning Field - SGF Springfield-Branson

IDASGF

Idaho Falls Fanning Field

Sat 11/14

10:35 am-4:21 pm

1 stop4h 46m

Springfield-Branson

Tue 11/17

7:35 am-3:38 pm

2 stops9h 03m

$424

Idaho FallsSt. Louis

IDA Idaho Falls Fanning Field - STL Lambert-St Louis

IDASTL

Idaho Falls Fanning Field

Thu 9/24

2:28 pm-8:36 pm

1 stop5h 08m

Lambert-St Louis

Sun 9/27

5:10 am-9:53 am

1 stop5h 43m

$434

Idaho FallsKansas City

IDA Idaho Falls Fanning Field - MCI Kansas City

IDAMCI

Idaho Falls Fanning Field

Thu 10/1

2:01 pm-11:59 pm

1 stop8h 58m

Kansas City

Wed 10/7

3:17 pm-10:59 pm

1 stop8h 42m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/27

Showing 1-10 of 30 resultsSorted by cheapest first
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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

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, June is the cheapest month in which you can book a flight from Idaho Falls to Missouri (average of $398). Flying from Idaho Falls to Missouri in January is currently the most expensive (average of $647). 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

See what other customers who have flown with Alaska Airlines,Delta, andUnited 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.
Alaska Airlines
7.9
Good
12,866 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Alaska Airlines
7.9
Good
12,866 reviews
Alaska Airlines
7.9
Good
12,866 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Delta
7.8
Good
8,544 reviews
Alaska Airlines
7.9
Good
12,866 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
United Airlines
7.4
Good
10,159 reviews
Alaska Airlines
7.9
Good
12,866 reviews

Crew

8.5

Boarding

8.1

Comfort

7.8

Food

7.0

Overall

7.9

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.

Related info for your journey

  • 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 5h 16m. Fly via Alaska Airlines or United Airlines 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 - Lambert-St Louis or Idaho Falls Fanning Field - Springfield-Branson 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, June is the cheapest month in which you can book a flight from Idaho Falls to Missouri (average of $398). Flying from Idaho Falls to Missouri in January is currently the most expensive (average of $647). 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

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Top 3 airlines flying from Idaho Falls to Missouri

AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$164Average$404FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$328Average$524FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$389Average$499FlexibilityNo cancel feeOn-time75%

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