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

Frontier, Alaska Airlines, and American Airlines are the most popular carriers operating from Missouri to Idaho

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 39% 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.

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 45m on average. Another popular route from Missouri to Idaho is flying from Springfield to Boise, which will take roughly 5h 30m. Keep in mind that layovers or delays could extend your travel time.

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 December 2025, 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.

$93 Cheap Flights from Missouri to Idaho in 2025/26

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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.

8:23 pm - 11:17 am

MCI

BOI

15h 54m1 stop

2:19 pm - 7:42 pm

BOI

MCI

28h 23m1 stop

$167Frontier

Thu, Jan 8 - Thu, Jan 15

3:46 pm - 11:08 am

STL

GEG

21h 22m1 stop

8:58 pm - 8:50 pm

GEG

STL

21h 52m1 stop

$186Multiple Airlines

Wed, Jan 21 - Sun, Jan 25

6:30 am - 10:24 am

MCI

BOI

4h 54m1 stop

3:03 pm - 11:27 pm

BOI

MCI

7h 24m1 stop

$197Delta

Wed, Jan 21 - Wed, Jan 21

2:38 pm - 11:01 pm

MCI

BOI

9h 23m1 stop

5:40 am - 3:05 pm

BOI

MCI

8h 25m1 stop

$219Alaska Airlines

Sun, Jan 18 - Thu, Jan 22

2:53 pm - 7:06 pm

MCI

JAC

5h 13m1 stop

12:58 pm - 8:39 pm

JAC

MCI

6h 41m1 stop

$229Delta

Tue, Jan 20 - Sat, Jan 24

3:59 pm - 10:52 pm

MCI

GEG

8h 53m1 stop

5:00 am - 3:05 pm

GEG

MCI

8h 05m1 stop

$236Alaska Airlines

Thu, Jan 8 - Mon, Jan 12

1:56 pm - 6:49 pm

MCI

GEG

6h 53m1 stop

6:00 am - 4:47 pm

GEG

MCI

8h 47m1 stop

$237American Airlines

Wed, Jan 7 - Wed, Jan 14

8:00 am - 3:18 pm

MCI

JAC

8h 18m2 stops

1:41 pm - 11:30 pm

JAC

MCI

8h 49m2 stops

$239United Airlines

Tue, Jan 20 - Sat, Jan 24

2:16 pm - 8:25 pm

MCI

SUN

7h 09m1 stop

1:16 pm - 10:39 pm

SUN

MCI

8h 23m1 stop

$241American Airlines

Mon, Jan 5 - Thu, Jan 8

9:05 am - 7:16 pm

MCI

GEG

12h 11m2 stops

1:48 pm - 11:30 pm

GEG

MCI

7h 42m1 stop

$242United Airlines

Wed, Jan 7 - Wed, Jan 14

United Airlines flights from Missouri to Idaho

Our best United Airlines deals on Missouri to Idaho flight tickets

United Airlines

Jan 20

MCI8:00 amKansas City

8h 18m

2 stops

JAC3:18 pmJackson Hole

Jan 24

JAC1:41 pmJackson Hole

8h 49m

2 stops

MCI11:30 pmKansas City

$239

Find similar

United Airlines

Jan 7

MCI9:05 amKansas City

12h 11m

2 stops

GEG7:16 pmSpokane

Jan 14

GEG1:48 pmSpokane

7h 42m

1 stop

MCI11:30 pmKansas City

$242

Find similar

United Airlines

Dec 24

MCI5:07 pmKansas City

4h 45m

1 stop

JAC8:52 pmJackson Hole

Dec 29

JAC4:20 pmJackson Hole

5h 55m

1 stop

MCI11:15 pmKansas City

$269

Find similar

Frontier flights from Missouri to Idaho

Our best Frontier deals on Missouri to Idaho flight tickets

Frontier

Jan 8

MCI8:23 pmKansas City

15h 54m

1 stop

BOI11:17 amBoise Air Term. Gowen Fld

Jan 15

BOI2:19 pmBoise Air Term. Gowen Fld

28h 23m

1 stop

MCI7:42 pmKansas City

$167

Find similar

Frontier

Jan 8

MCI9:48 amKansas City

26h 29m

2 stops

BOI11:17 amBoise Air Term. Gowen Fld

Jan 15

BOI2:19 pmBoise Air Term. Gowen Fld

28h 23m

1 stop

MCI7:42 pmKansas City

$231

Find similar

Frontier

Dec 19

MCI8:45 pmKansas City

16h 14m

1 stop

BOI11:59 amBoise Air Term. Gowen Fld

Jan 26

BOI12:07 pmBoise Air Term. Gowen Fld

6h 44m

1 stop

MCI7:51 pmKansas City

$369

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Thu 1/8

8:23 pm-11:17 am

1 stop15h 54m

Boise Air Term. Gowen Fld

Thu 1/15

2:19 pm-7:42 pm

1 stop28h 23m

$167

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Wed 1/21

3:46 pm-11:08 am

1 stop21h 22m

Spokane

Sun 1/25

8:58 pm-8:50 pm

1 stop21h 52m

$186

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Wed 1/21

6:30 am-10:24 am

1 stop4h 54m

Boise Air Term. Gowen Fld

Wed 1/21

3:03 pm-11:27 pm

1 stop7h 24m

$197

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Sun 1/18

2:38 pm-11:01 pm

1 stop9h 23m

Boise Air Term. Gowen Fld

Thu 1/22

5:40 am-3:05 pm

1 stop8h 25m

$219

Kansas CityJackson

MCI - JAC

MCIJAC

Kansas City

Tue 1/20

2:53 pm-7:06 pm

1 stop5h 13m

Jackson Hole

Sat 1/24

12:58 pm-8:39 pm

1 stop6h 41m

$229

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Thu 1/8

3:59 pm-10:52 pm

1 stop8h 53m

Spokane

Mon 1/12

5:00 am-3:05 pm

1 stop8h 05m

$236

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Wed 1/7

1:56 pm-6:49 pm

1 stop6h 53m

Spokane

Wed 1/14

6:00 am-4:47 pm

1 stop8h 47m

$237

Kansas CityJackson

MCI - JAC

MCIJAC

Kansas City

Tue 1/20

8:00 am-3:18 pm

2 stops8h 18m

Jackson Hole

Sat 1/24

1:41 pm-11:30 pm

2 stops8h 49m

$239

Kansas CityHailey

MCI - SUN

MCISUN

Kansas City

Mon 1/5

2:16 pm-8:25 pm

1 stop7h 09m

Hailey Sun Valley-Friedman

Thu 1/8

1:16 pm-10:39 pm

1 stop8h 23m

$241

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Wed 1/7

9:05 am-7:16 pm

2 stops12h 11m

Spokane

Wed 1/14

1:48 pm-11:30 pm

1 stop7h 42m

$242

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, November 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 $358. If you don’t want to visit Idaho in November, then you should wait until September to fly from Missouri, when ticket prices are also cheap, with an average price of $382.

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 $425 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 $264 on momondo.

Can stopping save me money on Missouri to Idaho flights?

You could potentially save up to 68% 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 32m
Direct flights	None

The fastest flight from Missouri to Idaho takes 4h 32m

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

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 December 2025, 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 $182	Free Cancellation	Rating 7.9 8,008 reviews	Search Delta flights
American Airlines	PriceFrom $186	Free Cancellation	Rating 7.2 11,050 reviews	Search American Airlines flights
United Airlines	PriceFrom $236	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
Southwest	PriceFrom $266	Free Cancellation	Rating 7.9 4,253 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $288	Free Cancellation	Rating 8.0 11,432 reviews	Search Alaska Airlines 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.