How long is the flight from Missouri to Idaho?

Flight times from Missouri to Idaho vary, but if you’re flying out of Kansas City and flying into Boise (one of the most popular routes), then the duration is 4h 37m on average. Another popular route from Missouri to Idaho is flying from Springfield to Boise, which will take roughly 5h 01m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Idaho?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Idaho from Missouri according to our data. United Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 6 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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

Frontier, Delta, and United Airlines are the most popular carriers operating from Missouri to Idaho

When did momondo last update prices for flights from Missouri to Idaho?

Prices for flights from Missouri to Idaho refresh daily.

How many operators does momondo search for flights from Missouri to Idaho?

As of August 2025, there are 6 operators available to choose from for flights from Missouri to Idaho.

How old do you have to be to fly from Missouri to Idaho?

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 Missouri to Idaho.

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

The required travel and health documents for your Idaho 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 Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$117 Cheap Flights from Missouri to Idaho in 2025

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Find the cheapest flights from Missouri to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

2:57 pm - 8:44 pmMCI-JAC

6h 47m1 stop

4:08 pm - 10:25 pmJAC-MCI

5h 17m1 stop

$229American Airlines

Find Deal

Sat, Sep 27 - Thu, Oct 2

7:55 pm - 10:58 amSTL-GEG

17h 03m1 stop

11:53 am - 9:06 amGEG-STL

19h 13m1 stop

$235Frontier

Find Deal

Sat, Sep 13 - Sun, Sep 21

6:40 am - 10:45 amMCI-JAC

5h 05m1 stop

7:30 am - 1:19 pmJAC-MCI

4h 49m1 stop

$237Delta

Find Deal

Fri, Sep 26 - Sat, Oct 4

6:00 am - 12:43 pmSTL-GEG

8h 43m1 stop

7:44 pm - 2:39 pmGEG-STL

16h 55m1 stop

$252Alaska Airlines

Find Deal

Wed, Aug 27 - Wed, Sep 3

7:40 am - 11:55 amSTL-GEG

6h 15m1 stop

2:23 pm - 11:09 pmGEG-STL

6h 46m1 stop

$253Delta

Find Deal

Sat, Sep 27 - Tue, Sep 30

4:50 pm - 10:30 pmSTL-GEG

7h 40m1 stop

6:15 am - 10:15 pmGEG-STL

14h 00m2 stops

$264Southwest

Find Deal

Tue, Sep 9 - Tue, Sep 16

6:55 am - 11:45 amMCI-BOI

5h 50m1 stop

5:10 am - 10:25 amBOI-MCI

4h 15m1 stop

$267Southwest

Find Deal

Tue, Sep 9 - Sat, Sep 20

6:30 pm - 12:19 amSTL-GEG

7h 49m1 stop

7:44 pm - 2:39 pmGEG-STL

16h 55m1 stop

$279Alaska Airlines

Find Deal

Fri, Sep 19 - Sun, Sep 21

5:15 am - 9:42 amSTL-BOI

5h 27m1 stop

5:00 am - 2:33 pmBOI-STL

8h 33m2 stops

$284United Airlines

Find Deal

Sun, Aug 24 - Tue, Aug 26

6:00 am - 9:42 amMCI-JAC

4h 42m1 stop

5:56 pm - 11:30 pmJAC-MCI

4h 34m1 stop

$299United Airlines

Find Deal

Sun, Sep 28 - Sat, Oct 4

Frontier flights from Missouri to Idaho

Our best Frontier deals on Missouri to Idaho flight tickets

Frontier

Sep 13

STL7:55 pmLambert-St Louis

17h 03m

1 stop

GEG10:58 amSpokane

Sep 21

GEG11:53 amSpokane

19h 13m

1 stop

STL9:06 amLambert-St Louis

$235

Find similar

Frontier

Aug 6

STL7:29 pmLambert-St Louis

17h 17m

1 stop

BOI11:46 amBoise Air Term. Gowen Fld

Aug 10

BOI12:36 pmBoise Air Term. Gowen Fld

19h 35m

1 stop

STL9:11 amLambert-St Louis

$237

Find similar

Frontier

Sep 18

STL7:55 pmLambert-St Louis

16h 42m

1 stop

BOI11:37 amBoise Air Term. Gowen Fld

Sep 26

BOI12:22 pmBoise Air Term. Gowen Fld

19h 44m

1 stop

STL9:06 amLambert-St Louis

$245

Find similar

American Airlines flights from Missouri to Idaho

Our best American Airlines deals on Missouri to Idaho flight tickets

American Airlines

Sep 27

MCI2:57 pmKansas City

6h 47m

1 stop

JAC8:44 pmJackson Hole

Oct 2

JAC4:08 pmJackson Hole

5h 17m

1 stop

MCI10:25 pmKansas City

$229

Find similar

American Airlines

Aug 16

MCI5:01 amKansas City

7h 17m

1 stop

JAC11:18 amJackson Hole

Aug 20

JAC4:11 pmJackson Hole

5h 37m

1 stop

MCI10:48 pmKansas City

$249

Find similar

American Airlines

Oct 18

MCI5:50 amKansas City

8h 54m

1 stop

BOI1:44 pmBoise Air Term. Gowen Fld

Oct 24

BOI5:20 pmBoise Air Term. Gowen Fld

5h 35m

1 stop

MCI11:55 pmKansas City

$273

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Kansas CityJackson

MCI - JAC

MCIJAC

Kansas City

Sat 9/27

2:57 pm-8:44 pm

1 stop6h 47m

Jackson Hole

Thu 10/2

4:08 pm-10:25 pm

1 stop5h 17m

$229

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Sat 9/13

7:55 pm-10:58 am

1 stop17h 03m

Spokane

Sun 9/21

11:53 am-9:06 am

1 stop19h 13m

$235

Kansas CityJackson

MCI - JAC

MCIJAC

Kansas City

Fri 9/26

6:40 am-10:45 am

1 stop5h 05m

Jackson Hole

Sat 10/4

7:30 am-1:19 pm

1 stop4h 49m

$237

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Wed 8/27

6:00 am-12:43 pm

1 stop8h 43m

Spokane

Wed 9/3

7:44 pm-2:39 pm

1 stop16h 55m

$252

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Sat 9/27

7:40 am-11:55 am

1 stop6h 15m

Spokane

Tue 9/30

2:23 pm-11:09 pm

1 stop6h 46m

$253

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Tue 9/9

4:50 pm-10:30 pm

1 stop7h 40m

Spokane

Tue 9/16

6:15 am-10:15 pm

2 stops14h 00m

$264

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Tue 9/9

6:55 am-11:45 am

1 stop5h 50m

Boise Air Term. Gowen Fld

Sat 9/20

5:10 am-10:25 am

1 stop4h 15m

$267

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Fri 9/19

6:30 pm-12:19 am

1 stop7h 49m

Spokane

Sun 9/21

7:44 pm-2:39 pm

1 stop16h 55m

$279

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sun 8/24

5:15 am-9:42 am

1 stop5h 27m

Boise Air Term. Gowen Fld

Tue 8/26

5:00 am-2:33 pm

2 stops8h 33m

$284

Kansas CityJackson

MCI - JAC

MCIJAC

Kansas City

Sun 9/28

6:00 am-9:42 am

1 stop4h 42m

Jackson Hole

Sat 10/4

5:56 pm-11:30 pm

1 stop4h 34m

$299

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 Missouri to Idaho

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

Other information

What is the cheapest month to fly to Idaho?

In general, April is the cheapest month to fly from Missouri to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $316. If you don’t want to visit Idaho in April, then you should wait until October to fly from Missouri, when ticket prices are also cheap, with an average price of $367.

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

Our data shows that Wednesday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $371. On the other hand, Sunday is the most expensive day to depart from Missouri because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $590.

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

According to our data, the cheapest time of day to fly to Idaho is at noon. momondo users have found flights departing from Missouri to Idaho at noon for as low as $435. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Idaho, so prices are often more expensive at around $489 per ticket.

How far in advance should I book a flight to Idaho?

You are more likely to see cheaper flights to Idaho from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $418 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Missouri for as low as $262 on momondo.

Can stopping save me money on Missouri to Idaho flights?

You could potentially save up to 75% on your flight if you consider stops on a Missouri to Idaho flight.

Cheap Missouri to Idaho flight deals and tips

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

Best Price Found	$117
Fastest flight time	4h 24m
Direct flights	None
Airports in Idaho	5 airports

The best one-way flight to Idaho from Missouri in the past 72 hours is $117. The best round-trip flight deal from Missouri to Idaho found on momondo in the last 72 hours is $229.

The fastest flight from Missouri to Idaho takes 4h 24m

There are no direct flights from Missouri to Idaho. Popular non-direct routes for this connection are Kansas City Airport - Hailey Sun Valley-Friedman Airport, Lambert-St Louis Airport - Boise Air Term. Gowen Fld Airport and Lambert-St Louis Airport - Spokane Airport.

There are 5 airports near Idaho: Idaho Falls Fanning Field (IDA), Spokane (GEG), Boise Air Term. Gowen Fld (BOI), Hailey Sun Valley-Friedman (SUN), Jackson Hole (JAC)

Search flight deals

When did momondo last update prices for flights from Missouri to Idaho?
Prices for flights from Missouri to Idaho refresh daily.
How many operators does momondo search for flights from Missouri to Idaho?
As of August 2025, there are 6 operators available to choose from for flights from Missouri to Idaho.
How old do you have to be to fly from Missouri to Idaho?
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 Missouri to Idaho.
What documentation or ID do you need to fly to Idaho?
The required travel and health documents for your Idaho 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 Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Missouri to Idaho

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

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $137	Free Cancellation	Rating 6.3 8,049 reviews	Search Spirit Airlines flights
American Airlines	PriceFrom $196	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $197	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Alaska Airlines	PriceFrom $216	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $236	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
Southwest	PriceFrom $290	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights

Why use momondo?

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

It is quick and easy to find Missouri to Idaho 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 that suits you.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Idaho from Missouri.

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

If you are simply researching potential flights to Idaho, momondo offers a useful price alert feature which will track prices for flights to Idaho from Missouri and alert you when they change.