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Cheap flights from St. Louis to Iowa from $39

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Iowa departing on 11/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Iowa

Cheap round-trip flights

Southwest Logo
9:50 am - 11:00 amSTL-DSM
1h 10mnonstop
Southwest Logo
5:35 am - 6:45 amDSM-STL
1h 10mnonstop
$77Southwest
Find Deal
Thu, Oct 16 - Mon, Oct 20
Southwest Logo
1:55 pm - 3:05 pmSTL-DSM
1h 10mnonstop
Southwest Logo
6:15 pm - 7:25 pmDSM-STL
1h 10mnonstop
$124Southwest
Find Deal
Sat, Oct 18 - Mon, Oct 20
Frontier Logo
7:52 pm - 1:52 pmSTL-DSM
18h 00m1 stop
Frontier Logo
2:37 pm - 9:07 amDSM-STL
18h 30m1 stop
$152Frontier
Find Deal
Tue, Oct 14 - Fri, Oct 17
Frontier Logo
7:52 pm - 8:04 pmSTL-OMA
24h 12m1 stop
Frontier Logo
8:59 pm - 9:07 amOMA-STL
12h 08m1 stop
$154Frontier
Find Deal
Fri, Oct 10 - Sun, Oct 12
American Airlines Logo
2:15 pm - 8:11 pmSTL-DSM
5h 56m1 stop
American Airlines Logo
6:12 pm - 11:18 pmDSM-STL
5h 06m1 stop
$159American Airlines
Find Deal
Tue, Oct 21 - Tue, Oct 28
American Airlines Logo
8:04 pm - 12:02 amSTL-DSM
3h 58m1 stop
American Airlines Logo
6:22 pm - 11:58 pmDSM-STL
5h 36m1 stop
$174American Airlines
Find Deal
Tue, Oct 14 - Sat, Oct 18
Delta Logo
11:21 am - 5:44 pmSTL-DSM
6h 23m1 stop
Delta Logo
5:32 pm - 11:24 pmDSM-STL
5h 52m1 stop
$177Delta
Find Deal
Tue, Oct 14 - Mon, Oct 20
Delta Logo
6:00 am - 1:28 pmSTL-DSM
7h 28m1 stop
Delta Logo
11:06 am - 3:31 pmDSM-STL
4h 25m1 stop
$184Delta
Find Deal
Wed, Oct 15 - Sat, Oct 18
United Airlines Logo
6:30 am - 10:32 amSTL-DSM
4h 02m1 stop
United Airlines Logo
6:30 am - 12:28 pmDSM-STL
5h 58m1 stop
$217United Airlines
Find Deal
Tue, Oct 14 - Thu, Oct 16
United Airlines Logo
9:20 am - 1:49 pmSTL-FOD
4h 29m1 stop
United Airlines Logo
2:35 pm - 9:37 pmFOD-STL
7h 02m1 stop
$219United Airlines
Find Deal
Tue, Oct 7 - Sat, Oct 11

Frontier flights from St. Louis to Iowa

Our best Frontier deals on St. Louis to Iowa flight tickets
Frontier
Oct 14
STL7:52 pmLambert-St Louis
18h 00m
1 stop
DSM1:52 pmDes Moines
Oct 17
DSM2:37 pmDes Moines
18h 30m
1 stop
STL9:07 amLambert-St Louis
$152
Find similar
Frontier
Oct 10
STL7:52 pmLambert-St Louis
24h 12m
1 stop
OMA8:04 pmOmaha Eppley Airfield
Oct 12
OMA8:59 pmOmaha Eppley Airfield
12h 08m
1 stop
STL9:07 amLambert-St Louis
$154
Find similar
Frontier
Oct 11
STL4:33 pmLambert-St Louis
15h 15m
1 stop
OMA7:48 amOmaha Eppley Airfield
Oct 12
OMA8:59 pmOmaha Eppley Airfield
12h 08m
1 stop
STL9:07 amLambert-St Louis
$156
Find similar

American Airlines flights from St. Louis to Iowa

Our best American Airlines deals on St. Louis to Iowa flight tickets
American Airlines
Oct 21
STL2:15 pmLambert-St Louis
5h 56m
1 stop
DSM8:11 pmDes Moines
Oct 28
DSM6:12 pmDes Moines
5h 06m
1 stop
STL11:18 pmLambert-St Louis
$159
Find similar
American Airlines
Oct 14
STL8:04 pmLambert-St Louis
3h 58m
1 stop
DSM12:02 amDes Moines
Oct 18
DSM6:22 pmDes Moines
5h 36m
1 stop
STL11:58 pmLambert-St Louis
$174
Find similar
American Airlines
Oct 18
STL8:49 amLambert-St Louis
6h 14m
1 stop
DSM3:03 pmDes Moines
Oct 20
DSM6:07 pmDes Moines
14h 02m
1 stop
STL8:09 amLambert-St Louis
$253
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Iowa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 24, 2025.
Use the filters below to find and compare flights from St. Louis to Iowa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisDes Moines

STL - DSM

STLDSM

Lambert-St Louis

Thu 10/16

9:50 am-11:00 am

Nonstop1h 10m

Des Moines

Mon 10/20

5:35 am-6:45 am

Nonstop1h 10m

$77

St. LouisDes Moines

STL - DSM

STLDSM

Lambert-St Louis

Sat 10/18

1:55 pm-3:05 pm

Nonstop1h 10m

Des Moines

Mon 10/20

6:15 pm-7:25 pm

Nonstop1h 10m

$124

St. LouisDes Moines

STL - DSM

STLDSM

Lambert-St Louis

Tue 10/14

7:52 pm-1:52 pm

1 stop18h 00m

Des Moines

Fri 10/17

2:37 pm-9:07 am

1 stop18h 30m

$152

St. LouisOmaha

STL - OMA

STLOMA

Lambert-St Louis

Fri 10/10

7:52 pm-8:04 pm

1 stop24h 12m

Omaha Eppley Airfield

Sun 10/12

8:59 pm-9:07 am

1 stop12h 08m

$154

St. LouisDes Moines

STL - DSM

STLDSM

Lambert-St Louis

Tue 10/21

2:15 pm-8:11 pm

1 stop5h 56m

Des Moines

Tue 10/28

6:12 pm-11:18 pm

1 stop5h 06m

$159

St. LouisDes Moines

STL - DSM

STLDSM

Lambert-St Louis

Tue 10/14

8:04 pm-12:02 am

1 stop3h 58m

Des Moines

Sat 10/18

6:22 pm-11:58 pm

1 stop5h 36m

$174

St. LouisDes Moines

STL - DSM

STLDSM

Lambert-St Louis

Tue 10/14

11:21 am-5:44 pm

1 stop6h 23m

Des Moines

Mon 10/20

5:32 pm-11:24 pm

1 stop5h 52m

$177

St. LouisDes Moines

STL - DSM

STLDSM

Lambert-St Louis

Wed 10/15

6:00 am-1:28 pm

1 stop7h 28m

Des Moines

Sat 10/18

11:06 am-3:31 pm

1 stop4h 25m

$184

St. LouisDes Moines

STL - DSM

STLDSM

Lambert-St Louis

Tue 10/14

6:30 am-10:32 am

1 stop4h 02m

Des Moines

Thu 10/16

6:30 am-12:28 pm

1 stop5h 58m

$217

St. LouisFort Dodge

STL - FOD

STLFOD

Lambert-St Louis

Tue 10/7

9:20 am-1:49 pm

1 stop4h 29m

Fort Dodge

Sat 10/11

2:35 pm-9:37 pm

1 stop7h 02m

$219

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Iowa from

How to get the cheapest flight ticket from St. Louis to Iowa

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

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

The cheapest day to depart from St. Louis to Iowa is on a Saturday when prices can be found for as low as $309. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $492. These prices are subject to change though, so be sure to set up a Price Alert for flights to Iowa.

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

Our most recent data shows that the best time of day to fly to Iowa is in the evening. Flights from St. Louis to Iowa during this time can be as low as $127. Try not to purchase tickets in the morning because they tend to be around $456. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Lambert-St Louis to Iowa flight route?

Fly from Lambert-St Louis to Des Moines for the best Lambert-St Louis - Iowa flight prices

What cabin class options are available on Lambert-St Louis to Iowa flights?

There is only 1 cabin class available to choose from on Lambert-St Louis to Iowa flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Iowa flights?

No. A direct flight is the cheapest option for a flight between St. Louis to Iowa.

Cheap St. Louis to Iowa flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Iowa

Best Price Found

$164

Fastest flight time

1h 05m

Direct flights

Every day

Airports in Iowa

2 airports
The best one-way flight to Iowa from St. Louis in the past 72 hours is $164. The best round-trip flight deal from St. Louis to Iowa found on momondo in the last 72 hours is $632.
The fastest flight from St. Louis to Iowa takes 1h 05m
Direct flights go from St. Louis to Iowa every day.
There are 2 airports near Iowa: Omaha Eppley Airfield (OMA), Des Moines (DSM)
Search flight deals

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Iowa?

    Prices for flights from Lambert-St Louis Airport to Iowa refresh daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Iowa?

  • How old do you have to be to fly from Lambert-St Louis Airport to Iowa?

    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 Lambert-St Louis Airport to Iowa.

  • What documentation or ID do you need to fly to Iowa?

    The travel and health documents you'll need for your trip to Iowa may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Iowa. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from St. Louis to Iowa?

Best airlines flying from St. Louis to Iowa

Compare and see reviews for airlines that fly from St. Louis to Iowa with momondo
Airline
Rating
Free Cancellation
Price
Southern / MokulelePriceFrom $52Free CancellationRating
6.3
25 reviews
Search Southern / Mokulele flights
SouthwestPriceFrom $97Free CancellationRating
8.0
4,244 reviews
Search Southwest flights
American AirlinesPriceFrom $142Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Iowa?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Iowa. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to Iowa with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Iowa from St. Louis with this policy.

How can momondo help me find flights from St. Louis to Iowa?

Once all potential St. Louis to Iowa flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of St. Louis to Iowa flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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