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 41% 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 54m on average. Another popular route from Missouri to Idaho is flying from St. Louis to Boise, which will take roughly 5h 25m. Keep in mind that layovers or delays could extend your travel time.

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 November 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.

$123 Cheap Flights from Missouri to Idaho in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

10:52 am - 4:06 pmMCI-GEG

7h 14m1 stop

12:08 pm - 7:14 pmGEG-MCI

5h 06m1 stop

$138Frontier

Find Deal

Thu, Dec 4 - Thu, Dec 11

11:58 am - 5:02 pmMCI-GEG

7h 04m1 stop

12:08 pm - 7:14 pmGEG-MCI

5h 06m1 stop

$142Frontier

Find Deal

Sun, Dec 7 - Thu, Dec 11

6:15 pm - 9:54 pmMCI-SUN

4h 39m1 stop

7:30 am - 1:10 pmSUN-MCI

4h 40m1 stop

$241Delta

Find Deal

Sat, Apr 25 - Wed, Apr 29

6:40 am - 12:17 pmMCI-JAC

6h 37m1 stop

5:30 pm - 12:25 amJAC-MCI

5h 55m1 stop

$249Delta

Find Deal

Sat, Mar 28 - Tue, Mar 31

5:02 pm - 9:32 pmSGF-BOI

5h 30m1 stop

10:25 am - 4:21 pmBOI-SGF

4h 56m1 stop

$269United Airlines

Find Deal

Tue, Feb 24 - Tue, Mar 3

5:02 pm - 9:32 pmSGF-BOI

5h 30m1 stop

5:00 am - 2:45 pmBOI-SGF

8h 45m2 stops

$274United Airlines

Find Deal

Tue, Feb 24 - Tue, Mar 3

2:06 pm - 11:41 pmMCI-BOI

10h 35m1 stop

6:41 am - 1:25 pmBOI-MCI

5h 44m1 stop

$284American Airlines

Find Deal

Wed, Feb 18 - Wed, Feb 25

5:48 am - 12:30 pmMCI-SUN

7h 42m1 stop

1:30 pm - 10:10 pmSUN-MCI

7h 40m1 stop

$320American Airlines

Find Deal

Tue, Mar 24 - Sat, Mar 28

6:20 am - 9:35 amMCI-GEG

5h 15m1 stop

6:35 am - 5:20 pmGEG-MCI

8h 45m2 stops

$332Southwest

Find Deal

Tue, Dec 9 - Tue, Dec 16

3:35 pm - 11:40 pmMCI-BOI

9h 05m2 stops

6:30 am - 1:45 pmBOI-MCI

6h 15m1 stop

$384Southwest

Find Deal

Mon, Feb 9 - Thu, Feb 12

American Airlines flights from Missouri to Idaho

Our best American Airlines deals on Missouri to Idaho flight tickets

American Airlines

Feb 18

MCI2:06 pmKansas City

10h 35m

1 stop

BOI11:41 pmBoise Air Term. Gowen Fld

Feb 25

BOI6:41 amBoise Air Term. Gowen Fld

5h 44m

1 stop

MCI1:25 pmKansas City

$284

Find similar

American Airlines

Mar 24

MCI5:48 amKansas City

7h 42m

1 stop

SUN12:30 pmHailey Sun Valley-Friedman

Mar 28

SUN1:30 pmHailey Sun Valley-Friedman

7h 40m

1 stop

MCI10:10 pmKansas City

$320

Find similar

American Airlines

Dec 9

MCI7:00 amKansas City

7h 30m

1 stop

GEG12:30 pmSpokane

Dec 16

GEG5:17 amSpokane

6h 33m

1 stop

MCI1:50 pmKansas City

$327

Find similar

Southwest flights from Missouri to Idaho

Our best Southwest deals on Missouri to Idaho flight tickets

Southwest

Dec 9

MCI6:20 amKansas City

5h 15m

1 stop

GEG9:35 amSpokane

Dec 16

GEG6:35 amSpokane

8h 45m

2 stops

MCI5:20 pmKansas City

$332

Find similar

Southwest

Feb 9

MCI3:35 pmKansas City

9h 05m

2 stops

BOI11:40 pmBoise Air Term. Gowen Fld

Feb 12

BOI6:30 amBoise Air Term. Gowen Fld

6h 15m

1 stop

MCI1:45 pmKansas City

$384

Find similar

Southwest

Apr 14

MCI3:40 pmKansas City

8h 40m

2 stops

BOI11:20 pmBoise Air Term. Gowen Fld

Apr 21

BOI6:00 amBoise Air Term. Gowen Fld

8h 50m

2 stops

MCI3:50 pmKansas City

$387

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Thu 12/4

10:52 am-4:06 pm

1 stop7h 14m

Spokane

Thu 12/11

12:08 pm-7:14 pm

1 stop5h 06m

$138

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Sun 12/7

11:58 am-5:02 pm

1 stop7h 04m

Spokane

Thu 12/11

12:08 pm-7:14 pm

1 stop5h 06m

$142

Kansas CityHailey

MCI - SUN

MCISUN

Kansas City

Sat 4/25

6:15 pm-9:54 pm

1 stop4h 39m

Hailey Sun Valley-Friedman

Wed 4/29

7:30 am-1:10 pm

1 stop4h 40m

$241

Kansas CityJackson

MCI - JAC

MCIJAC

Kansas City

Sat 3/28

6:40 am-12:17 pm

1 stop6h 37m

Jackson Hole

Tue 3/31

5:30 pm-12:25 am

1 stop5h 55m

$249

SpringfieldBoise

SGF - BOI

SGFBOI

Springfield-Branson

Tue 2/24

5:02 pm-9:32 pm

1 stop5h 30m

Boise Air Term. Gowen Fld

Tue 3/3

10:25 am-4:21 pm

1 stop4h 56m

$269

SpringfieldBoise

SGF - BOI

SGFBOI

Springfield-Branson

Tue 2/24

5:02 pm-9:32 pm

1 stop5h 30m

Boise Air Term. Gowen Fld

Tue 3/3

5:00 am-2:45 pm

2 stops8h 45m

$274

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Wed 2/18

2:06 pm-11:41 pm

1 stop10h 35m

Boise Air Term. Gowen Fld

Wed 2/25

6:41 am-1:25 pm

1 stop5h 44m

$284

Kansas CityHailey

MCI - SUN

MCISUN

Kansas City

Tue 3/24

5:48 am-12:30 pm

1 stop7h 42m

Hailey Sun Valley-Friedman

Sat 3/28

1:30 pm-10:10 pm

1 stop7h 40m

$320

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Tue 12/9

6:20 am-9:35 am

1 stop5h 15m

Spokane

Tue 12/16

6:35 am-5:20 pm

2 stops8h 45m

$332

Kansas CityBoise

MCI - BOI

MCIBOI

Kansas City

Mon 2/9

3:35 pm-11:40 pm

2 stops9h 05m

Boise Air Term. Gowen Fld

Thu 2/12

6:30 am-1:45 pm

1 stop6h 15m

$384

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 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 $408 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 57% 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

Direct flights	None

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 November 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 8,004 reviews	Search Delta flights
American Airlines	PriceFrom $186	Free Cancellation	Rating 7.2 11,042 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $216	Free Cancellation	Rating 8.0 11,242 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $236	Free Cancellation	Rating 7.4 9,002 reviews	Search United Airlines flights
Southwest	PriceFrom $266	Free Cancellation	Rating 8.0 4,240 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.