What is the cheapest airline that flies from Idaho Falls Fanning Field to Missouri?

Delta, United Airlines, and Alaska Airlines are the most popular carriers operating from Idaho Falls Fanning Field to Missouri

What airlines fly to Missouri?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Missouri from Idaho Falls according to our data. United Airlines is the first choice among our users, with 79% of people opting to fly with this airline when traveling to Missouri. Keep in mind that there are 3 different airlines that fly to Missouri on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Idaho Falls Fanning Field Airport to Missouri?

Prices for flights from Idaho Falls Fanning Field Airport to Missouri are refreshed on a daily basis.

How many operators does momondo search for flights from Idaho Falls Fanning Field Airport to Missouri?

The number of operators available for flights from Idaho Falls Fanning Field Airport to Missouri is 3 as of February 2026.

How old do you have to be to fly from Idaho Falls Fanning Field Airport to Missouri?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho Falls Fanning Field Airport to Missouri.

What documentation or ID do you need to fly to Missouri?

The required travel and health documents for your Missouri trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Missouri. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$140 Cheap Flights from Idaho Falls to Missouri in 2026

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Find the cheapest flights from Idaho Falls to Missouri

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:55 pm - 12:21 am

IDA

STL

4h 26m

1 stop

2:12 pm - 6:15 pm

STL

IDA

5h 03m

1 stop

$279Delta

Sun, Mar 29 - Mon, Apr 6

5:30 pm - 11:15 pm

IDA

MCI

4h 45m

1 stop

6:00 am - 9:56 am

MCI

IDA

4h 56m

1 stop

$279United Airlines

Mon, Mar 9 - Sat, Mar 28

6:55 pm - 12:21 am

IDA

STL

4h 26m

1 stop

12:28 pm - 10:16 pm

STL

IDA

10h 48m

2 stops

$284Delta

Sun, Mar 29 - Tue, Apr 7

6:55 pm - 12:21 am

IDA

STL

4h 26m

1 stop

6:45 pm - 10:40 pm

STL

IDA

4h 55m

1 stop

$294Delta

Wed, Apr 8 - Mon, Apr 13

6:55 pm - 9:05 am

IDA

STL

13h 10m

2 stops

2:12 pm - 6:15 pm

STL

IDA

5h 03m

1 stop

$299Delta

Tue, Mar 31 - Mon, Apr 6

6:55 pm - 9:05 am

IDA

STL

13h 10m

2 stops

12:28 pm - 10:16 pm

STL

IDA

10h 48m

2 stops

$304Delta

Tue, Mar 31 - Tue, Apr 7

6:00 am - 2:51 pm

IDA

STL

7h 51m

1 stop

7:00 am - 3:29 pm

STL

IDA

9h 29m

1 stop

$337Alaska Airlines

Wed, Apr 15 - Wed, Apr 22

4:06 pm - 11:59 pm

IDA

MCI

6h 53m

1 stop

2:58 pm - 10:40 pm

MCI

IDA

8h 42m

1 stop

$398Alaska Airlines

Fri, Apr 24 - Mon, Apr 27

5:26 pm - 11:59 pm

IDA

MCI

5h 33m

1 stop

6:00 am - 9:55 am

MCI

IDA

4h 55m

1 stop

$421United Airlines

Sun, May 3 - Fri, May 8

1:43 pm - 8:46 pm

IDA

SGF

6h 03m

1 stop

7:08 am - 1:13 pm

SGF

IDA

7h 05m

1 stop

$727American Airlines

Thu, May 14 - Tue, May 19

Delta flights from Idaho Falls to Missouri

Our best Delta deals on Idaho Falls to Missouri flight tickets

Delta

Mar 29

IDA6:55 pmIdaho Falls Fanning Field

4h 26m

1 stop

STL12:21 amLambert-St Louis

Apr 6

STL2:12 pmLambert-St Louis

5h 03m

1 stop

IDA6:15 pmIdaho Falls Fanning Field

$279

Delta

Mar 29

IDA6:55 pmIdaho Falls Fanning Field

4h 26m

1 stop

STL12:21 amLambert-St Louis

Apr 7

STL12:28 pmLambert-St Louis

10h 48m

2 stops

IDA10:16 pmIdaho Falls Fanning Field

$284

Delta

Apr 8

IDA6:55 pmIdaho Falls Fanning Field

4h 26m

1 stop

STL12:21 amLambert-St Louis

Apr 13

STL6:45 pmLambert-St Louis

4h 55m

1 stop

IDA10:40 pmIdaho Falls Fanning Field

$294

Alaska Airlines flights from Idaho Falls to Missouri

Our best Alaska Airlines deals on Idaho Falls to Missouri flight tickets

Alaska Airlines

Apr 15

IDA6:00 amIdaho Falls Fanning Field

7h 51m

1 stop

STL2:51 pmLambert-St Louis

Apr 22

STL7:00 amLambert-St Louis

9h 29m

1 stop

IDA3:29 pmIdaho Falls Fanning Field

$337

Alaska Airlines

Apr 2

IDA6:00 amIdaho Falls Fanning Field

8h 20m

1 stop

STL3:20 pmLambert-St Louis

Apr 7

STL3:50 pmLambert-St Louis

8h 02m

1 stop

IDA10:52 pmIdaho Falls Fanning Field

$348

Alaska Airlines

Apr 24

IDA4:06 pmIdaho Falls Fanning Field

6h 53m

1 stop

MCI11:59 pmKansas City

Apr 27

MCI2:58 pmKansas City

8h 42m

1 stop

IDA10:40 pmIdaho Falls Fanning Field

$398

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Sun 3/29

6:55 pm-12:21 am

1 stop4h 26m

Lambert-St Louis

Mon 4/6

2:12 pm-6:15 pm

1 stop5h 03m

$279

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Mon 3/9

5:30 pm-11:15 pm

1 stop4h 45m

Kansas City

Sat 3/28

6:00 am-9:56 am

1 stop4h 56m

$279

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Sun 3/29

6:55 pm-12:21 am

1 stop4h 26m

Lambert-St Louis

Tue 4/7

12:28 pm-10:16 pm

2 stops10h 48m

$284

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Wed 4/8

6:55 pm-12:21 am

1 stop4h 26m

Lambert-St Louis

Mon 4/13

6:45 pm-10:40 pm

1 stop4h 55m

$294

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Tue 3/31

6:55 pm-9:05 am

2 stops13h 10m

Lambert-St Louis

Mon 4/6

2:12 pm-6:15 pm

1 stop5h 03m

$299

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Tue 3/31

6:55 pm-9:05 am

2 stops13h 10m

Lambert-St Louis

Tue 4/7

12:28 pm-10:16 pm

2 stops10h 48m

$304

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Wed 4/15

6:00 am-2:51 pm

1 stop7h 51m

Lambert-St Louis

Wed 4/22

7:00 am-3:29 pm

1 stop9h 29m

$337

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Fri 4/24

4:06 pm-11:59 pm

1 stop6h 53m

Kansas City

Mon 4/27

2:58 pm-10:40 pm

1 stop8h 42m

$398

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Sun 5/3

5:26 pm-11:59 pm

1 stop5h 33m

Kansas City

Fri 5/8

6:00 am-9:55 am

1 stop4h 55m

$421

Idaho FallsSpringfield

IDA - SGF

IDASGF

Idaho Falls Fanning Field

Thu 5/14

1:43 pm-8:46 pm

1 stop6h 03m

Springfield-Branson

Tue 5/19

7:08 am-1:13 pm

1 stop7h 05m

$727

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho Falls to Missouri

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Missouri?

In general, April is the cheapest month to fly from Idaho Falls to Missouri. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $326. If you aren’t able to travel to Missouri during the month of April, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $384.

Can stopping save me money on Idaho Falls to Missouri flights?

You could potentially save up to 10% on your flight if you consider stops on a Idaho Falls to Missouri flight.

Cheap Idaho Falls to Missouri flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho Falls to Missouri

Fastest flight time	4h 29m
Direct flights	None

The fastest flight from Idaho Falls to Missouri takes 4h 29m

There are no direct flights from Idaho Falls to Missouri. There are no popular flight routes from Idaho Falls to Missouri.

Search flight deals

When did momondo last update prices for flights from Idaho Falls Fanning Field Airport to Missouri?
Prices for flights from Idaho Falls Fanning Field Airport to Missouri are refreshed on a daily basis.
How many operators does momondo search for flights from Idaho Falls Fanning Field Airport to Missouri?
The number of operators available for flights from Idaho Falls Fanning Field Airport to Missouri is 3 as of February 2026.
How old do you have to be to fly from Idaho Falls Fanning Field Airport to Missouri?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho Falls Fanning Field Airport to Missouri.
What documentation or ID do you need to fly to Missouri?
The required travel and health documents for your Missouri trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Missouri. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Idaho Falls to Missouri

Compare and see reviews for airlines that fly from Idaho Falls to Missouri with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $258	Free Cancellation	Rating 7.9 8,208 reviews	Search Delta flights
American Airlines	PriceFrom $326	Free Cancellation	Rating 7.2 11,307 reviews	Search American Airlines flights
United Airlines	PriceFrom $354	Free Cancellation	Rating 7.4 9,315 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Idaho Falls to Missouri?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Missouri from Idaho Falls.

Can I find flights from Idaho Falls to Missouri with flexible booking policies on momondo?

All flight searches from Idaho Falls to Missouri on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Idaho Falls to Missouri?

Once all potential Idaho Falls to Missouri flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Idaho Falls to Missouri right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Idaho Falls to Missouri flights. All you need is a valid email address and we will do the rest; it is that quick and easy.