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Cheap flights from Iowa to St. Louis from $70

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Iowa to St. Louis departing on 5/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Iowa to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:19 pm - 7:23 pm
OMA
-
STL
23h 04m
1 stop
Frontier Logo
8:08 pm - 7:24 pm
STL
-
OMA
23h 16m
1 stop
$191Frontier
Wed, May 6 - Mon, May 11
American Airlines Logo
5:00 am - 11:37 am
DSM
-
STL
6h 37m
1 stop
American Airlines Logo
8:03 pm - 11:49 pm
STL
-
DSM
3h 46m
1 stop
$205American Airlines
Wed, Apr 15 - Wed, Apr 15
Frontier Logo
8:19 pm - 7:23 pm
OMA
-
STL
23h 04m
1 stop
Frontier Logo
8:08 pm - 7:24 pm
STL
-
OMA
23h 16m
1 stop
$211Frontier
Thu, May 7 - Mon, May 11
Southwest Logo
6:55 am - 1:00 pm
DSM
-
STL
6h 05m
2 stops
Southwest Logo
3:55 pm - 10:10 pm
STL
-
DSM
6h 15m
1 stop
$215Southwest
Wed, Apr 15 - Wed, Apr 15
Frontier Logo
8:19 pm - 8:55 am
OMA
-
STL
12h 36m
2 stops
Frontier Logo
8:08 pm - 7:24 pm
STL
-
OMA
23h 16m
1 stop
$218Frontier
Tue, May 5 - Mon, May 11
United Airlines Logo
6:15 am - 12:47 pm
DSM
-
STL
6h 32m
1 stop
United Airlines Logo
5:28 pm - 11:24 pm
STL
-
DSM
5h 56m
1 stop
$219United Airlines
Sat, May 9 - Tue, May 12
Southwest Logo
6:55 am - 1:00 pm
DSM
-
STL
6h 05m
2 stops
Southwest Logo
3:10 pm - 10:10 pm
STL
-
DSM
7h 00m
2 stops
$221Southwest
Wed, Apr 15 - Wed, Apr 15
Frontier Logo
8:43 pm - 5:36 pm
OMA
-
STL
20h 53m
2 stops
Frontier Logo
8:08 pm - 7:24 pm
STL
-
OMA
23h 16m
1 stop
$224Frontier
Mon, May 4 - Mon, May 11
Southwest Logo
2:10 pm - 9:15 pm
DSM
-
STL
7h 05m
1 stop
Southwest Logo
8:35 am - 2:05 pm
STL
-
DSM
5h 30m
1 stop
$225Southwest
Sat, Apr 18 - Tue, Apr 21
Delta Logo
2:44 pm - 7:11 pm
DSM
-
STL
4h 27m
1 stop
Delta Logo
10:50 am - 5:02 pm
STL
-
DSM
6h 12m
1 stop
$239Delta
Sat, Apr 25 - Sat, May 2

Delta flights from Iowa to St. Louis

Our best Delta deals on Iowa to St. Louis flight tickets
Delta
Apr 25
DSM2:44 pmDes Moines
4h 27m
1 stop
STL7:11 pmLambert-St Louis
May 2
STL10:50 amLambert-St Louis
6h 12m
1 stop
DSM5:02 pmDes Moines
$239
Delta
Apr 25
DSM10:56 amDes Moines
9h 48m
2 stops
STL8:44 pmLambert-St Louis
May 2
STL10:50 amLambert-St Louis
6h 12m
1 stop
DSM5:02 pmDes Moines
$244
Delta
Apr 25
DSM10:56 amDes Moines
9h 48m
2 stops
STL8:44 pmLambert-St Louis
May 2
STL6:48 amLambert-St Louis
8h 53m
2 stops
DSM3:41 pmDes Moines
$249

Southwest flights from Iowa to St. Louis

Our best Southwest deals on Iowa to St. Louis flight tickets
Southwest
Apr 15
DSM6:55 amDes Moines
6h 05m
2 stops
STL1:00 pmLambert-St Louis
Apr 15
STL3:55 pmLambert-St Louis
6h 15m
1 stop
DSM10:10 pmDes Moines
$215
Southwest
Apr 15
DSM6:55 amDes Moines
6h 05m
2 stops
STL1:00 pmLambert-St Louis
Apr 15
STL3:10 pmLambert-St Louis
7h 00m
2 stops
DSM10:10 pmDes Moines
$221
Southwest
Apr 18
DSM2:10 pmDes Moines
7h 05m
1 stop
STL9:15 pmLambert-St Louis
Apr 21
STL8:35 amLambert-St Louis
5h 30m
1 stop
DSM2:05 pmDes Moines
$225

momondo Fare Finder

 
Customize your flight search to find flights from Iowa to St. Louis 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 March 31, 2026.
Use the filters below to find and compare flights from Iowa to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OmahaSt. Louis

OMA - STL

OMASTL

Omaha Eppley Airfield

Wed 5/6

8:19 pm-7:23 pm

1 stop23h 04m

Lambert-St Louis

Mon 5/11

8:08 pm-7:24 pm

1 stop23h 16m

$191
Quickest round-trip

Des MoinesSt. Louis

DSM - STL

DSMSTL

Des Moines

Wed 4/15

5:00 am-11:37 am

1 stop6h 37m

Lambert-St Louis

Wed 4/15

8:03 pm-11:49 pm

1 stop3h 46m

$205

OmahaSt. Louis

OMA - STL

OMASTL

Omaha Eppley Airfield

Thu 5/7

8:19 pm-7:23 pm

1 stop23h 04m

Lambert-St Louis

Mon 5/11

8:08 pm-7:24 pm

1 stop23h 16m

$211

Des MoinesSt. Louis

DSM - STL

DSMSTL

Des Moines

Wed 4/15

6:55 am-1:00 pm

2 stops6h 05m

Lambert-St Louis

Wed 4/15

3:55 pm-10:10 pm

1 stop6h 15m

$215

OmahaSt. Louis

OMA - STL

OMASTL

Omaha Eppley Airfield

Tue 5/5

8:19 pm-8:55 am

2 stops12h 36m

Lambert-St Louis

Mon 5/11

8:08 pm-7:24 pm

1 stop23h 16m

$218

Des MoinesSt. Louis

DSM - STL

DSMSTL

Des Moines

Sat 5/9

6:15 am-12:47 pm

1 stop6h 32m

Lambert-St Louis

Tue 5/12

5:28 pm-11:24 pm

1 stop5h 56m

$219

Des MoinesSt. Louis

DSM - STL

DSMSTL

Des Moines

Wed 4/15

6:55 am-1:00 pm

2 stops6h 05m

Lambert-St Louis

Wed 4/15

3:10 pm-10:10 pm

2 stops7h 00m

$221

OmahaSt. Louis

OMA - STL

OMASTL

Omaha Eppley Airfield

Mon 5/4

8:43 pm-5:36 pm

2 stops20h 53m

Lambert-St Louis

Mon 5/11

8:08 pm-7:24 pm

1 stop23h 16m

$224

Des MoinesSt. Louis

DSM - STL

DSMSTL

Des Moines

Sat 4/18

2:10 pm-9:15 pm

1 stop7h 05m

Lambert-St Louis

Tue 4/21

8:35 am-2:05 pm

1 stop5h 30m

$225

Des MoinesSt. Louis

DSM - STL

DSMSTL

Des Moines

Sat 4/25

2:44 pm-7:11 pm

1 stop4h 27m

Lambert-St Louis

Sat 5/2

10:50 am-5:02 pm

1 stop6h 12m

$239

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 St. Louis from

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

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 St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $350. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $418. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Iowa in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $364 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $396 per ticket.

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

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

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

There is only 1 cabin class available to choose from on Iowa to Lambert-St Louis 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 Iowa to St. Louis flights?

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

Cheap Iowa to St. Louis flight deals and tips

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

Best Price Found

$105

Fastest flight time

1h 15m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun

Airports in St. Louis

1 airport
The best flight deal from Iowa to St. Louis found on momondo in the last 72 hours is $105
The fastest flight from Iowa to St. Louis takes 1h 15m
Direct flights go from Iowa to St. Louis on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in St. Louis. From Iowa there are direct flights to Lambert-St Louis (STL).
Search flight deals

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

    Prices for flights from Iowa to Lambert-St Louis Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Iowa to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport 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 Lambert-St Louis Airport. 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 Iowa to St. Louis?

Best airlines flying from Iowa to St. Louis

Compare and see reviews for airlines that fly from Iowa to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $107Free CancellationRating
8.0
4,332 reviews
Search Southwest flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Clayton
Festus
Eureka
Edwardsville
Litchfield
Shrewsbury
Grafton

Why use momondo?

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

Finding the right flight to St. Louis from Iowa is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

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

Yes. All flights to St. Louis from Iowa on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 St. Louis from Iowa.

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

Yes momondo offers price alerts on flights to St. Louis from Iowa. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
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