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

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

How long is the flight from Missouri to Idaho?

Flight times from Missouri to Idaho vary, but if you’re flying out of Springfield and flying into Boise (one of the most popular routes), then the duration is 5h 05m on average. Another popular route from Missouri to Idaho is flying from Kansas City to Boise, which will take roughly 5h 11m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Idaho?

United Airlines, Delta and Southwest 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 46% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 5 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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 June 2026, there are 5 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.

$160 Cheap Flights from Missouri to Idaho in 2026

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Find the cheapest flights from Missouri to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:30 am - 11:22 am

MCI

BOI

6h 52m

1 stop

3:16 pm - 12:35 am

BOI

MCI

8h 19m

1 stop

$227American Airlines

Tue, Aug 25 - Tue, Sep 1

9:50 am - 4:49 pm

MCI

BOI

7h 59m

2 stops

3:16 pm - 12:35 am

BOI

MCI

8h 19m

1 stop

$232American Airlines

Tue, Aug 25 - Tue, Sep 1

1:45 pm - 12:30 pm

MCI

BOI

23h 45m

1 stop

1:24 pm - 1:00 pm

BOI

MCI

22h 36m

1 stop

$242Frontier

Wed, Jul 1 - Tue, Jul 7

7:15 am - 12:20 pm

MCI

GEG

7h 05m

1 stop

1:00 pm - 11:06 pm

GEG

MCI

8h 06m

1 stop

$249Delta

Tue, Sep 15 - Tue, Sep 22

1:45 pm - 12:29 pm

MCI

BOI

23h 44m

1 stop

1:24 pm - 1:00 pm

BOI

MCI

22h 36m

1 stop

$260Frontier

Wed, Jul 8 - Sun, Jul 12

7:00 am - 12:14 pm

MCI

GEG

7h 14m

1 stop

5:20 pm - 12:05 am

GEG

MCI

4h 45m

1 stop

$285Delta

Mon, Sep 21 - Wed, Sep 30

10:00 am - 9:14 pm

MCI

GEG

13h 14m

2 stops

3:54 pm - 11:30 pm

GEG

MCI

5h 36m

1 stop

$299United Airlines

Tue, Sep 15 - Tue, Sep 22

2:17 pm - 10:24 pm

MCI

BOI

9h 07m

1 stop

2:17 pm - 11:59 pm

BOI

MCI

8h 42m

1 stop

$317Alaska Airlines

Tue, Aug 18 - Wed, Aug 19

7:01 am - 3:17 pm

MCI

IDA

9h 16m

1 stop

1:53 pm - 11:59 pm

IDA

MCI

9h 06m

1 stop

$319Alaska Airlines

Sat, Nov 14 - Wed, Nov 18

4:40 pm - 10:40 pm

STL

BOI

7h 00m

1 stop

2:44 pm - 8:46 pm

BOI

STL

5h 02m

1 stop

$345United Airlines

Sat, Aug 29 - Sat, Sep 5

American Airlines flights from Missouri to Idaho

Our best American Airlines deals on Missouri to Idaho flight tickets

American Airlines

Aug 25

MCI5:30 amKansas City

6h 52m

1 stop

BOI11:22 amBoise Air Term. Gowen Fld

Sep 1

BOI3:16 pmBoise Air Term. Gowen Fld

8h 19m

1 stop

MCI12:35 amKansas City

$227

American Airlines

Aug 25

MCI9:50 amKansas City

7h 59m

2 stops

BOI4:49 pmBoise Air Term. Gowen Fld

Sep 1

BOI3:16 pmBoise Air Term. Gowen Fld

8h 19m

1 stop

MCI12:35 amKansas City

$232

American Airlines

Aug 25

MCI9:50 amKansas City

7h 59m

2 stops

BOI4:49 pmBoise Air Term. Gowen Fld

Sep 1

BOI1:55 pmBoise Air Term. Gowen Fld

9h 40m

2 stops

MCI12:35 amKansas City

$237

Frontier flights from Missouri to Idaho

Our best Frontier deals on Missouri to Idaho flight tickets

Frontier

Jul 1

MCI1:45 pmKansas City

23h 45m

1 stop

BOI12:30 pmBoise Air Term. Gowen Fld

Jul 7

BOI1:24 pmBoise Air Term. Gowen Fld

22h 36m

1 stop

MCI1:00 pmKansas City

$242

Frontier

Jul 8

MCI1:45 pmKansas City

23h 44m

1 stop

BOI12:29 pmBoise Air Term. Gowen Fld

Jul 12

BOI1:24 pmBoise Air Term. Gowen Fld

22h 36m

1 stop

MCI1:00 pmKansas City

$260

Frontier

Jul 1

STL8:08 pmLambert-St Louis

17h 22m

1 stop

BOI12:30 pmBoise Air Term. Gowen Fld

Jul 7

BOI1:24 pmBoise Air Term. Gowen Fld

4h 59m

1 stop

STL7:23 pmLambert-St Louis

$320

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Tue 8/25

5:30 am-11:22 am

1 stop6h 52m

Boise Air Term. Gowen Fld

Tue 9/1

3:16 pm-12:35 am

1 stop8h 19m

$227

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Tue 8/25

9:50 am-4:49 pm

2 stops7h 59m

Boise Air Term. Gowen Fld

Tue 9/1

3:16 pm-12:35 am

1 stop8h 19m

$232

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Wed 7/1

1:45 pm-12:30 pm

1 stop23h 45m

Boise Air Term. Gowen Fld

Tue 7/7

1:24 pm-1:00 pm

1 stop22h 36m

$242

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Tue 9/15

7:15 am-12:20 pm

1 stop7h 05m

Spokane

Tue 9/22

1:00 pm-11:06 pm

1 stop8h 06m

$249

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Wed 7/8

1:45 pm-12:29 pm

1 stop23h 44m

Boise Air Term. Gowen Fld

Sun 7/12

1:24 pm-1:00 pm

1 stop22h 36m

$260

Quickest round-trip

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Mon 9/21

7:00 am-12:14 pm

1 stop7h 14m

Spokane

Wed 9/30

5:20 pm-12:05 am

1 stop4h 45m

$285

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Tue 9/15

10:00 am-9:14 pm

2 stops13h 14m

Spokane

Tue 9/22

3:54 pm-11:30 pm

1 stop5h 36m

$299

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Tue 8/18

2:17 pm-10:24 pm

1 stop9h 07m

Boise Air Term. Gowen Fld

Wed 8/19

2:17 pm-11:59 pm

1 stop8h 42m

$317

Kansas CityIdaho Falls

MCI - IDA

MCIIDA

Kansas City

Sat 11/14

7:01 am-3:17 pm

1 stop9h 16m

Idaho Falls Fanning Field

Wed 11/18

1:53 pm-11:59 pm

1 stop9h 06m

$319

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sat 8/29

4:40 pm-10:40 pm

1 stop7h 00m

Boise Air Term. Gowen Fld

Sat 9/5

2:44 pm-8:46 pm

1 stop5h 02m

$345

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, June 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 $133. If you don’t want to visit Idaho in June, then you should wait until August to fly from Missouri, when ticket prices are also cheap, with an average price of $154.

Can stopping save me money on Missouri to Idaho flights?

You could potentially save up to 64% 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

Fastest flight time	4h 17m
Direct flights	None

The fastest flight from Missouri to Idaho takes 4h 17m

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

Search flight deals

Frequently asked questions about flying 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 June 2026, there are 5 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
Delta	PriceFrom $133	Free Cancellation	Rating 7.8 8,395 reviews	Search Delta flights
American Airlines	PriceFrom $186	Free Cancellation	Rating 7.1 11,641 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $232	Free Cancellation	Rating 7.9 12,464 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $252	Free Cancellation	Rating 7.4 9,774 reviews	Search United Airlines flights
Southwest	PriceFrom $266	Free Cancellation	Rating 8.0 4,256 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.