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Cheap flights from Missouri to Idaho Falls from $281

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 12/18. 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 Missouri to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
2:45 pm - 10:59 pm
MCI
-
IDA
9h 14m1 stop
Alaska Airlines Logo
6:58 pm - 1:50 pm
IDA
-
MCI
17h 52m1 stop
$289Alaska Airlines
Thu, Jan 8 - Thu, Jan 15
United Airlines Logo
11:29 am - 9:14 pm
MCI
-
IDA
10h 45m2 stops
United Airlines Logo
2:40 pm - 8:33 pm
IDA
-
MCI
4h 53m1 stop
$313United Airlines
Thu, Jan 8 - Thu, Jan 15
Alaska Airlines Logo
3:32 pm - 10:59 pm
MCI
-
IDA
8h 27m1 stop
Alaska Airlines Logo
6:58 pm - 1:50 pm
IDA
-
MCI
17h 52m1 stop
$364Alaska Airlines
Sat, Jan 31 - Wed, Feb 4
Alaska Airlines Logo
2:50 pm - 10:59 pm
STL
-
IDA
9h 09m1 stop
Alaska Airlines Logo
6:58 pm - 1:54 pm
IDA
-
STL
17h 56m1 stop
$371Alaska Airlines
Thu, Jan 22 - Mon, Jan 26
Alaska Airlines Logo
3:32 pm - 10:59 pm
MCI
-
IDA
8h 27m1 stop
Alaska Airlines Logo
9:00 am - 3:05 pm
IDA
-
MCI
29h 05m2 stops
$373Alaska Airlines
Sat, Jan 31 - Wed, Feb 4
United Airlines Logo
8:05 am - 3:31 pm
STL
-
IDA
8h 26m2 stops
United Airlines Logo
2:40 pm - 8:58 pm
IDA
-
STL
5h 18m1 stop
$376United Airlines
Thu, Jan 22 - Mon, Jan 26
Delta Logo
3:25 pm - 10:20 pm
STL
-
IDA
7h 55m2 stops
Delta Logo
6:59 pm - 8:52 am
IDA
-
STL
12h 53m2 stops
$381Delta
Mon, Mar 9 - Fri, Mar 13
Alaska Airlines Logo
2:50 pm - 10:59 pm
STL
-
IDA
9h 09m1 stop
Alaska Airlines Logo
6:58 pm - 1:54 pm
IDA
-
STL
17h 56m1 stop
$397Alaska Airlines
Wed, Feb 4 - Sat, Feb 7
Delta Logo
2:15 pm - 6:14 pm
STL
-
IDA
4h 59m1 stop
Delta Logo
6:50 pm - 12:36 am
IDA
-
STL
4h 46m1 stop
$405Delta
Mon, Apr 20 - Fri, Apr 24
Delta Logo
2:15 pm - 6:14 pm
STL
-
IDA
4h 59m1 stop
Delta Logo
1:05 pm - 11:01 pm
IDA
-
STL
8h 56m2 stops
$437Delta
Mon, Apr 20 - Fri, Apr 24

Delta flights from Missouri to Idaho Falls

Our best Delta deals on Missouri to Idaho Falls flight tickets
Delta
Jan 27
MCI6:30 amKansas City
7h 04m
1 stop
IDA12:34 pmIdaho Falls Fanning Field
Jan 30
IDA1:15 pmIdaho Falls Fanning Field
6h 24m
1 stop
MCI8:39 pmKansas City
$321
Find similar
Delta
Jan 27
MCI4:04 pmKansas City
7h 53m
2 stops
IDA10:57 pmIdaho Falls Fanning Field
Jan 30
IDA1:15 pmIdaho Falls Fanning Field
6h 24m
1 stop
MCI8:39 pmKansas City
$326
Find similar
Delta
Jan 27
MCI6:15 amKansas City
12h 36m
2 stops
IDA5:51 pmIdaho Falls Fanning Field
Jan 30
IDA1:15 pmIdaho Falls Fanning Field
9h 12m
2 stops
MCI11:27 pmKansas City
$360
Find similar

Alaska Airlines flights from Missouri to Idaho Falls

Our best Alaska Airlines deals on Missouri to Idaho Falls flight tickets
Alaska Airlines
Jan 8
MCI2:45 pmKansas City
9h 14m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
Jan 15
IDA6:58 pmIdaho Falls Fanning Field
17h 52m
1 stop
MCI1:50 pmKansas City
$289
Find similar
Alaska Airlines
Jan 31
MCI3:32 pmKansas City
8h 27m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
Feb 4
IDA9:00 amIdaho Falls Fanning Field
27h 50m
1 stop
MCI1:50 pmKansas City
$364
Find similar
Alaska Airlines
Jan 22
STL2:50 pmLambert-St Louis
9h 09m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
Jan 26
IDA6:58 pmIdaho Falls Fanning Field
17h 56m
1 stop
STL1:54 pmLambert-St Louis
$371
Find similar

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 December 11, 2025.
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

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Thu 1/8

2:45 pm-10:59 pm

1 stop9h 14m

Idaho Falls Fanning Field

Thu 1/15

6:58 pm-1:50 pm

1 stop17h 52m

$289

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Thu 1/8

11:29 am-9:14 pm

2 stops10h 45m

Idaho Falls Fanning Field

Thu 1/15

2:40 pm-8:33 pm

1 stop4h 53m

$313

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Sat 1/31

3:32 pm-10:59 pm

1 stop8h 27m

Idaho Falls Fanning Field

Wed 2/4

6:58 pm-1:50 pm

1 stop17h 52m

$364

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Thu 1/22

2:50 pm-10:59 pm

1 stop9h 09m

Idaho Falls Fanning Field

Mon 1/26

6:58 pm-1:54 pm

1 stop17h 56m

$371

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Sat 1/31

3:32 pm-10:59 pm

1 stop8h 27m

Idaho Falls Fanning Field

Wed 2/4

9:00 am-3:05 pm

2 stops29h 05m

$373

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Thu 1/22

8:05 am-3:31 pm

2 stops8h 26m

Idaho Falls Fanning Field

Mon 1/26

2:40 pm-8:58 pm

1 stop5h 18m

$376

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Mon 3/9

3:25 pm-10:20 pm

2 stops7h 55m

Idaho Falls Fanning Field

Fri 3/13

6:59 pm-8:52 am

2 stops12h 53m

$381

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Wed 2/4

2:50 pm-10:59 pm

1 stop9h 09m

Idaho Falls Fanning Field

Sat 2/7

6:58 pm-1:54 pm

1 stop17h 56m

$397

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Mon 4/20

2:15 pm-6:14 pm

1 stop4h 59m

Idaho Falls Fanning Field

Fri 4/24

6:50 pm-12:36 am

1 stop4h 46m

$405

St. LouisIdaho Falls

STL - IDA

STLIDA

Lambert-St Louis

Mon 4/20

2:15 pm-6:14 pm

1 stop4h 59m

Idaho Falls Fanning Field

Fri 4/24

1:05 pm-11:01 pm

2 stops8h 56m

$437

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 day to depart on your flight to Idaho Falls?

Our data shows that Tuesday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $605. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Monday is $787.

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

Our most recent data shows that the best time of day to fly to Idaho Falls is at noon. Flights from Missouri to Idaho Falls during this time can be as low as $651. Try not to purchase tickets in the afternoon because they tend to be around $685. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 59m

Direct flights

None
The fastest flight from Missouri to Idaho Falls takes 4h 59m
There are no direct flights from Missouri to Idaho Falls. There are no popular flight routes from Missouri to Idaho Falls.
Search flight deals

  • 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
DeltaPriceFrom $192Free CancellationRating
7.9
8,007 reviews
Search Delta flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
9,095 reviews
Search United Airlines 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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