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Cheap flights from Idaho Falls to Missouri from $133

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to Missouri departing on 2/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Idaho Falls to Missouri

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:20 pm - 10:27 pm
IDA
-
STL
48h 07m2 stops
Multiple Airlines Logo
10:11 pm - 3:31 pm
STL
-
IDA
18h 20m1 stop
$253Multiple Airlines
Mon, Feb 9 - Thu, Feb 19
Multiple Airlines Logo
10:31 pm - 5:46 pm
IDA
-
STL
18h 15m1 stop
Multiple Airlines Logo
10:11 pm - 3:30 pm
STL
-
IDA
18h 19m1 stop
$258Multiple Airlines
Fri, Feb 20 - Sun, Mar 1
Multiple Airlines Logo
9:20 pm - 2:46 pm
IDA
-
STL
40h 26m2 stops
Multiple Airlines Logo
9:32 pm - 2:19 pm
STL
-
IDA
17h 47m1 stop
$261Multiple Airlines
Mon, Jan 26 - Sun, Feb 1
United Airlines Logo
5:00 am - 10:52 am
IDA
-
MCI
4h 52m1 stop
United Airlines Logo
9:17 am - 1:31 pm
MCI
-
IDA
5h 14m1 stop
$321United Airlines
Thu, May 28 - Tue, Jun 2
United Airlines Logo
2:40 pm - 8:33 pm
IDA
-
MCI
4h 53m1 stop
United Airlines Logo
5:45 am - 9:56 am
MCI
-
IDA
5h 11m1 stop
$371United Airlines
Sun, Jan 18 - Sun, Jan 25
Alaska Airlines Logo
9:00 am - 3:05 pm
IDA
-
MCI
29h 05m2 stops
Alaska Airlines Logo
2:45 pm - 10:59 pm
MCI
-
IDA
9h 14m1 stop
$376Alaska Airlines
Sat, Jan 17 - Wed, Jan 21
Alaska Airlines Logo
4:08 pm - 4:16 pm
IDA
-
MCI
23h 08m1 stop
Alaska Airlines Logo
5:10 pm - 1:06 pm
MCI
-
IDA
20h 56m1 stop
$378Alaska Airlines
Thu, May 28 - Mon, Jun 1
United Airlines Logo
2:40 pm - 8:36 pm
IDA
-
SGF
4h 56m1 stop
United Airlines Logo
7:45 am - 3:31 pm
SGF
-
IDA
8h 46m2 stops
$379United Airlines
Sat, Jan 17 - Wed, Jan 21
Alaska Airlines Logo
6:58 pm - 1:43 pm
IDA
-
MCI
17h 45m1 stop
Alaska Airlines Logo
2:45 pm - 10:59 pm
MCI
-
IDA
9h 14m1 stop
$383Alaska Airlines
Sat, Jan 17 - Wed, Jan 21
United Airlines Logo
5:00 am - 10:52 am
IDA
-
MCI
4h 52m1 stop
United Airlines Logo
10:00 am - 9:08 pm
MCI
-
IDA
12h 08m2 stops
$404United Airlines
Thu, May 28 - Tue, Jun 2

Delta flights from Idaho Falls to Missouri

Our best Delta deals on Idaho Falls to Missouri flight tickets
Delta
Jan 20
IDA1:15 pmIdaho Falls Fanning Field
7h 23m
1 stop
STL9:38 pmLambert-St Louis
Jan 21
STL6:40 amLambert-St Louis
6h 54m
1 stop
IDA12:34 pmIdaho Falls Fanning Field
$353
Find similar
Delta
Jan 20
IDA1:15 pmIdaho Falls Fanning Field
7h 23m
1 stop
STL9:38 pmLambert-St Louis
Jan 21
STL3:31 pmLambert-St Louis
8h 26m
2 stops
IDA10:57 pmIdaho Falls Fanning Field
$358
Find similar
Delta
Jan 23
IDA1:15 pmIdaho Falls Fanning Field
7h 23m
1 stop
STL9:38 pmLambert-St Louis
Jan 27
STL6:40 amLambert-St Louis
6h 54m
1 stop
IDA12:34 pmIdaho Falls Fanning Field
$362
Find similar

Alaska Airlines flights from Idaho Falls to Missouri

Our best Alaska Airlines deals on Idaho Falls to Missouri flight tickets
Alaska Airlines
Apr 20
IDA6:00 amIdaho Falls Fanning Field
8h 24m
1 stop
STL3:24 pmLambert-St Louis
Apr 22
STL7:00 amLambert-St Louis
9h 31m
1 stop
IDA3:31 pmIdaho Falls Fanning Field
$371
Find similar
Alaska Airlines
Jan 17
IDA9:00 amIdaho Falls Fanning Field
29h 05m
2 stops
MCI3:05 pmKansas City
Jan 21
MCI2:45 pmKansas City
9h 14m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
$376
Find similar
Alaska Airlines
May 28
IDA4:08 pmIdaho Falls Fanning Field
23h 08m
1 stop
MCI4:16 pmKansas City
Jun 1
MCI5:10 pmKansas City
20h 56m
1 stop
IDA1:06 pmIdaho Falls Fanning Field
$378
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 23, 2025.
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

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Mon 2/9

9:20 pm-10:27 pm

2 stops48h 07m

Lambert-St Louis

Thu 2/19

10:11 pm-3:31 pm

1 stop18h 20m

$253

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Fri 2/20

10:31 pm-5:46 pm

1 stop18h 15m

Lambert-St Louis

Sun 3/1

10:11 pm-3:30 pm

1 stop18h 19m

$258

Idaho FallsSt. Louis

IDA - STL

IDASTL

Idaho Falls Fanning Field

Mon 1/26

9:20 pm-2:46 pm

2 stops40h 26m

Lambert-St Louis

Sun 2/1

9:32 pm-2:19 pm

1 stop17h 47m

$261

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Thu 5/28

5:00 am-10:52 am

1 stop4h 52m

Kansas City

Tue 6/2

9:17 am-1:31 pm

1 stop5h 14m

$321

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Sun 1/18

2:40 pm-8:33 pm

1 stop4h 53m

Kansas City

Sun 1/25

5:45 am-9:56 am

1 stop5h 11m

$371

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Sat 1/17

9:00 am-3:05 pm

2 stops29h 05m

Kansas City

Wed 1/21

2:45 pm-10:59 pm

1 stop9h 14m

$376

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Thu 5/28

4:08 pm-4:16 pm

1 stop23h 08m

Kansas City

Mon 6/1

5:10 pm-1:06 pm

1 stop20h 56m

$378

Idaho FallsSpringfield

IDA - SGF

IDASGF

Idaho Falls Fanning Field

Sat 1/17

2:40 pm-8:36 pm

1 stop4h 56m

Springfield-Branson

Wed 1/21

7:45 am-3:31 pm

2 stops8h 46m

$379

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Sat 1/17

6:58 pm-1:43 pm

1 stop17h 45m

Kansas City

Wed 1/21

2:45 pm-10:59 pm

1 stop9h 14m

$383

Idaho FallsKansas City

IDA - MCI

IDAMCI

Idaho Falls Fanning Field

Thu 5/28

5:00 am-10:52 am

1 stop4h 52m

Kansas City

Tue 6/2

10:00 am-9:08 pm

2 stops12h 08m

$404

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Missouri from

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

What is the cheapest month to fly to Missouri?

In general, February 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 $337. If you aren’t able to travel to Missouri during the month of February, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $384.

What is the cheapest day to depart on your flight to Missouri?

The cheapest day to depart from Idaho Falls to Missouri is on a Thursday when prices can be found for as low as $631. Flights from Idaho Falls to Missouri on a Monday will generally be more expensive and average around $811. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Missouri?

According to our data, the cheapest time of day to fly to Missouri is in the evening. momondo users have found flights departing from Idaho Falls to Missouri in the evening for as low as $548. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Missouri are more costly in the afternoon, with an average ticket price of $704. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You could potentially save up to 20% 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 17m

Direct flights

None
The fastest flight from Idaho Falls to Missouri takes 4h 17m
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?

  • 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
DeltaPriceFrom $258Free CancellationRating
7.9
8,014 reviews
Search Delta flights
American AirlinesPriceFrom $324Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
United AirlinesPriceFrom $380Free CancellationRating
7.4
9,105 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.

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