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Cheap flights from Missouri to Idaho Falls from $148

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Idaho Falls departing on 8/7. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Missouri to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
7:00 am - 10:50 am
MCI
-
IDA
4h 50m
1 stop
Delta Logo
6:00 am - 2:08 pm
IDA
-
MCI
7h 08m
1 stop
$319Delta
Mon, Aug 10 - Tue, Aug 18
Alaska Airlines Logo
6:08 pm - 1:24 pm
STL
-
IDA
20h 16m
1 stop
Alaska Airlines Logo
3:57 pm - 5:10 pm
IDA
-
STL
24h 13m
1 stop
$319Alaska Airlines
Tue, Sep 15 - Mon, Sep 21
Delta Logo
3:03 pm - 6:20 pm
MCI
-
IDA
4h 17m
1 stop
Delta Logo
11:35 am - 11:58 pm
IDA
-
MCI
11h 23m
2 stops
$324Delta
Sat, Aug 22 - Sat, Aug 29
Delta Logo
2:15 pm - 6:14 pm
STL
-
IDA
4h 59m
1 stop
Delta Logo
6:45 pm - 8:12 am
IDA
-
STL
12h 27m
2 stops
$324Delta
Tue, Oct 6 - Sun, Oct 11
Delta Logo
12:18 pm - 6:20 pm
MCI
-
IDA
7h 02m
2 stops
Delta Logo
11:35 am - 11:58 pm
IDA
-
MCI
11h 23m
2 stops
$329Delta
Sat, Aug 22 - Sat, Aug 29
Alaska Airlines Logo
2:53 pm - 1:24 pm
MCI
-
IDA
23h 31m
1 stop
Alaska Airlines Logo
3:57 pm - 12:38 pm
IDA
-
MCI
19h 41m
1 stop
$344Alaska Airlines
Mon, Sep 14 - Sat, Sep 19
United Airlines Logo
5:10 am - 9:50 am
STL
-
IDA
5h 40m
1 stop
United Airlines Logo
5:54 pm - 11:57 pm
IDA
-
STL
5h 03m
1 stop
$345United Airlines
Tue, Jul 28 - Tue, Aug 4
United Airlines Logo
6:00 am - 9:51 am
MCI
-
IDA
4h 51m
1 stop
United Airlines Logo
4:04 pm - 11:30 pm
IDA
-
MCI
6h 26m
1 stop
$399United Airlines
Sat, Aug 29 - Wed, Sep 2
American Airlines Logo
7:27 am - 1:28 pm
STL
-
IDA
7h 01m
1 stop
American Airlines Logo
1:58 pm - 10:20 am
IDA
-
STL
19h 22m
1 stop
$436American Airlines
Tue, Sep 15 - Mon, Sep 21
American Airlines Logo
2:26 pm - 9:20 pm
SGF
-
IDA
7h 54m
1 stop
American Airlines Logo
2:20 pm - 9:29 pm
IDA
-
SGF
6h 09m
1 stop
$526American Airlines
Wed, Aug 12 - Wed, Aug 19

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Delta flights from Missouri to Idaho Falls

Our best Delta deals on Missouri to Idaho Falls flight tickets
Delta
Aug 10
MCI7:00 amKansas City
4h 50m
1 stop
IDA10:50 amIdaho Falls Fanning Field
Aug 17
IDA7:00 pmIdaho Falls Fanning Field
4h 13m
1 stop
MCI12:13 amKansas City
$319
Delta
Aug 22
MCI3:03 pmKansas City
4h 17m
1 stop
IDA6:20 pmIdaho Falls Fanning Field
Aug 29
IDA11:35 amIdaho Falls Fanning Field
11h 23m
2 stops
MCI11:58 pmKansas City
$324
Delta
Aug 22
MCI12:18 pmKansas City
7h 02m
2 stops
IDA6:20 pmIdaho Falls Fanning Field
Aug 29
IDA11:35 amIdaho Falls Fanning Field
11h 23m
2 stops
MCI11:58 pmKansas City
$329

Alaska Airlines flights from Missouri to Idaho Falls

Our best Alaska Airlines deals on Missouri to Idaho Falls flight tickets
Alaska Airlines
Sep 15
STL6:08 pmLambert-St Louis
20h 16m
1 stop
IDA1:24 pmIdaho Falls Fanning Field
Sep 21
IDA3:57 pmIdaho Falls Fanning Field
24h 13m
1 stop
STL5:10 pmLambert-St Louis
$319
Alaska Airlines
Sep 14
MCI2:53 pmKansas City
23h 31m
1 stop
IDA1:24 pmIdaho Falls Fanning Field
Sep 19
IDA3:57 pmIdaho Falls Fanning Field
19h 41m
1 stop
MCI12:38 pmKansas City
$344
Alaska Airlines
Sep 4
MCI2:48 pmKansas City
23h 36m
1 stop
IDA1:24 pmIdaho Falls Fanning Field
Sep 9
IDA3:57 pmIdaho Falls Fanning Field
19h 41m
1 stop
MCI12:38 pmKansas City
$418

momondo 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, momondo users made 832,500 searches. Data last updated June 29, 2026.
Use the filters below to find and compare flights from Missouri to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Mon 8/10

7:00 am-10:50 am

1 stop4h 50m

Idaho Falls Fanning Field

Tue 8/18

6:00 am-2:08 pm

1 stop7h 08m

$319

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Tue 9/15

6:08 pm-1:24 pm

1 stop20h 16m

Idaho Falls Fanning Field

Mon 9/21

3:57 pm-5:10 pm

1 stop24h 13m

$319

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Sat 8/22

3:03 pm-6:20 pm

1 stop4h 17m

Idaho Falls Fanning Field

Sat 8/29

11:35 am-11:58 pm

2 stops11h 23m

$324

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Tue 10/6

2:15 pm-6:14 pm

1 stop4h 59m

Idaho Falls Fanning Field

Sun 10/11

6:45 pm-8:12 am

2 stops12h 27m

$324

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Sat 8/22

12:18 pm-6:20 pm

2 stops7h 02m

Idaho Falls Fanning Field

Sat 8/29

11:35 am-11:58 pm

2 stops11h 23m

$329

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Mon 9/14

2:53 pm-1:24 pm

1 stop23h 31m

Idaho Falls Fanning Field

Sat 9/19

3:57 pm-12:38 pm

1 stop19h 41m

$344
Quickest round-trip

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Tue 7/28

5:10 am-9:50 am

1 stop5h 40m

Idaho Falls Fanning Field

Tue 8/4

5:54 pm-11:57 pm

1 stop5h 03m

$345

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Sat 8/29

6:00 am-9:51 am

1 stop4h 51m

Idaho Falls Fanning Field

Wed 9/2

4:04 pm-11:30 pm

1 stop6h 26m

$399

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Tue 9/15

7:27 am-1:28 pm

1 stop7h 01m

Idaho Falls Fanning Field

Mon 9/21

1:58 pm-10:20 am

1 stop19h 22m

$436

SpringfieldIdaho Falls

SGF - IDA

SGFIDA

Springfield-Branson

Wed 8/12

2:26 pm-9:20 pm

1 stop7h 54m

Idaho Falls Fanning Field

Wed 8/19

2:20 pm-9:29 pm

1 stop6h 09m

$526

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 Idaho Falls from

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

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 Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of August, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $252.

Cheap Missouri to Idaho Falls flight deals and tips

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

Fastest flight time

4h 50m

Direct flights

None
The fastest flight from Missouri to Idaho Falls takes 4h 50m
There are no direct flights from Missouri to Idaho Falls. There are no popular flight routes from Missouri to Idaho Falls.
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Frequently asked questions about flying from Missouri to Idaho Falls

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

    Prices for flights from Missouri to Idaho Falls Fanning Field Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Missouri to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The travel and health documents you'll need for your trip to Idaho Falls Fanning Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Missouri to Idaho Falls

Compare and see reviews for airlines that fly from Missouri to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $278Free CancellationRating
7.4
9,894 reviews
Search United Airlines flights
DeltaPriceFrom $313Free CancellationRating
7.8
8,449 reviews
Search Delta flights

Traveling to a place near Idaho Falls?

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

Why use momondo?

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

It is quick and easy to find Missouri to Idaho Falls flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Idaho Falls that suits you.

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

Yes. momondo allows you to filter the results for Missouri to Idaho Falls flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Idaho Falls from Missouri. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Missouri to Idaho Falls now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Idaho Falls and let you know when they change.

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