$151 Find Cheap Flights from Idaho Falls to Missouri

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho Falls to Missouri departing on 6/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Missouri

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to Missouri, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to Missouri, as well as popular online travel agencies
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Cheap Flights from Idaho Falls to Missouri

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
St. Louis
St. Louis1 stop$364
Kansas City
Kansas City1 stop$339
Springfield
Springfield1 stop$453
St. Louis
St. Louis1 stop$364
Kansas City
Kansas City1 stop$339
Springfield
Springfield1 stop$453

Book Cheap Idaho Falls to Missouri Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho Falls to Missouri that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Idaho Falls to Missouri

Thu, Aug 27 - Sun, Aug 30
Delta Logo
11:20 am - 5:23 pm
IDA
-
MCI
5h 03m
1 stop
Delta Logo
6:40 am - 10:39 am
MCI
-
IDA
4h 59m
1 stop
$339Delta
Thu, Aug 27 - Sun, Aug 30
Delta Logo
11:20 am - 5:23 pm
IDA
-
MCI
5h 03m
1 stop
Delta Logo
10:35 am - 10:14 pm
MCI
-
IDA
12h 39m
2 stops
$344Delta
Tue, May 26 - Tue, Jun 2
United Airlines Logo
4:10 pm - 11:57 pm
IDA
-
STL
6h 47m
1 stop
United Airlines Logo
5:10 am - 9:50 am
STL
-
IDA
5h 40m
1 stop
$379United Airlines
Tue, Sep 8 - Thu, Sep 17
Alaska Airlines Logo
6:18 am - 1:57 pm
IDA
-
MCI
6h 39m
1 stop
Alaska Airlines Logo
1:32 pm - 10:56 pm
MCI
-
IDA
10h 24m
1 stop
$379Alaska Airlines
Tue, Sep 8 - Thu, Sep 17
Alaska Airlines Logo
6:18 am - 1:57 pm
IDA
-
MCI
6h 39m
1 stop
Alaska Airlines Logo
2:51 pm - 1:06 pm
MCI
-
IDA
23h 15m
1 stop
$389Alaska Airlines
Tue, May 26 - Tue, Jun 2
United Airlines Logo
2:30 pm - 9:10 pm
IDA
-
STL
5h 40m
1 stop
United Airlines Logo
5:10 am - 9:50 am
STL
-
IDA
5h 40m
1 stop
$404United Airlines
Fri, May 29 - Thu, Jun 4
Multiple Airlines Logo
5:38 pm - 8:55 am
IDA
-
STL
14h 17m
2 stops
Multiple Airlines Logo
9:06 pm - 4:08 pm
STL
-
IDA
20h 02m
1 stop
$405Multiple Airlines
Sat, Jun 20 - Thu, Jun 25
Allegiant Air Logo
4:02 pm - 1:16 pm
IDA
-
SGF
20h 14m
1 stop
Allegiant Air Logo
2:06 pm - 3:08 pm
SGF
-
IDA
26h 02m
1 stop
$453Allegiant Air
Sat, Jun 20 - Fri, Jun 26
Allegiant Air Logo
4:02 pm - 1:16 pm
IDA
-
SGF
20h 14m
1 stop
Allegiant Air Logo
8:50 pm - 3:12 pm
SGF
-
IDA
19h 22m
1 stop
$471Allegiant Air
Fri, Jul 10 - Sun, Jul 12
Multiple Airlines Logo
9:47 am - 8:05 pm
IDA
-
SGF
9h 18m
1 stop
Multiple Airlines Logo
1:31 pm - 9:57 pm
SGF
-
IDA
33h 26m
2 stops
$613Multiple Airlines
Booking Insights

KAYAK's insights & trends for Idaho Falls to Missouri flights

Get data-powered insights and trends into flights from Idaho Falls to Missouri to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Idaho Falls to Missouri?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Idaho Falls to Missouri departing in May.

What is the cheapest month to fly from Idaho Falls to Missouri?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Idaho Falls to Missouri, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Idaho Falls to Missouri is March, when tickets cost $150 (return) on average. On the other hand, the most expensive months are January and December, when the average cost of round-trip tickets is $440 and $380 respectively.

Good to know

Low seasonFebruary
Cheapest flight$151
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Idaho Falls to St. Louis

FAQs - booking Missouri flights

  • How does KAYAK find such low prices on flights from Idaho Falls to Missouri?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Idaho Falls to Missouri.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho Falls to Missouri?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Idaho Falls to Missouri is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Idaho Falls to Missouri?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Idaho Falls to Missouri with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho Falls to Missouri?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Idaho Falls to Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Idaho Falls to Missouri

 
See real verified KAYAK customer reviews for airlines flying from Idaho Falls to Missouri. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Idaho Falls to Missouri? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12345 reviews
8.1Boarding
7.1Food
7.8Comfort
8.5Crew
7.0Entertainment
Airline reviews

Flight was cancelled which destroyed the rest of our journey.

2.0 MediocreWilliam, Apr 2026
BOI - SEA
Read more Alaska Airlines reviews

Flight was cancelled which destroyed the rest of our journey.

The ground crew was very good. They communicated clearly and continued updating. The flight crew was fine. The flight crew on the March 20th flight from MCI to Portland was excellent.

WOuld have liked coffee or pretzels but other than that, crew and pilot and flight were great. Seat was great, too.

The overhead storage was already packed full when I boarded (I fly peasant class), but the attendant played some Tetris and made a spot for my small suitcase. Thanks!

Snacks for our toddler could have been better, front the standpoint of variety but that’s not any different from other airlines.

Everything ran like it should. Staff was professional. Looking forward to flying with them again.

I fell asleep and missed my flight and they rescheduled me no problem. Staff was professional and the plane was clean. I was very happy with my experience.

I enjoyed the Starlink access but didn't have much time to use it. It also kept dropping me so I gave up. The food was very good though when I asked for a different "dessert" they didn't have anything. Chocolate Brownie Cookies are not suitable for everyone...maybe children. The flight staff were amazing - at least in First Class! My first time ever! The trip from Boise to San Diego was FAR better than going to Boise.

From Las Vegas to Boise all went well. However, our flight was delayed in Boise and I missed my connecting flight from Seattle to Pasco. Moreover, the last flight to Pasco was full and I was booked on the 11:30 flight Sunday and given a hotel accommodation. However, I was scheduled to deliver the Sunday morning service at my church and needed to arrive no later than 10:00. Therefore, I booked a Delta flight scheduled to arrive in Pasco at 23:09. My piece of luggage checked in Las Vegas arrived in Pasco earlier today. I waited at the airport for over an hour last night to speak with an Alaska agent to no avail. I went back after church this morning in search of my piece of luggage and it could not be located. After waiting for 40 minutes to speak to the agent authorized to take my claim, he announced that he was closing the counter to assist on the flight line but not before providing me with a telephone number that would help me with filing my claim. Before I was able to make the call (due to other factors) I received a call from Alaska agent informing me that my luggage had just arrived and I am now waiting for it to be delivered. I deliberately took the more complicated route home to ensure that I would be home in plenty of time to prepare for myself for the Sunday service and accommodate my relatives’ needs. I believe the airport is undermanned given the number of flights coming in and going out. It was fiasco last night with three flights waiting for luggage and another flight landing within minutes. Today’s problems stemmed from a lack of cross training and a serious amount of cargo/baggage going out and too few people scheduled to cover.

It was ok. First time flying with them to Boise Won’t do again

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

No screens or meal options. Freezing cold. Dirty seats. Left late.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Everything you need to know for your flight from Idaho Falls to Missouri

Information on your arrival and departure airports