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$49+ Cheap flights from Iowa to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
DSM — STL
ago 5 — ago 121
ter 8/5
ter 8/12
1 adult, Economy
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Cheap flight deals from Iowa to St. Louis

Keep the following information in mind while searching for Iowa to St. Louis flight deals. Data was last updated julho 31, 2025.

Round-trip from

$97
(Southwest)

One-way from

$49
(Southwest)

Popular in

July

Cheapest in

August

Average price

$454

Good round-trip deal

$105 or less

Good one-way deal

$182 or less
From Iowa to Lambert-St Louis
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One-way flight from Iowa to Lambert-St Louis
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Highest demand for flights based on searches. 1% potential increase in price ($3 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Iowa to Lambert-St Louis.
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Price to beat on a one-way flight from Iowa to Lambert-St Louis.
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Find flight deals from Iowa to St. Louis

Cheapest flights from Iowa to St. Louis
Explore the most affordable flight options available from Iowa to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julho 31, 2025.

This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 8/278:25 amDSM - STL
Nonstop1h 05mSouthwest
qua 9/39:15 pmSTL - DSM
Nonstop1h 05mSouthwest
Deal found 7/28$97
This American Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 9/134:20 pmDSM - STL
1 stop4h 12mAmerican Airlines
sáb 9/203:59 pmSTL - DSM
1 stop7h 14mAmerican Airlines
Deal found 7/30$158
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 8/2711:35 amDSM - STL
1 stop4h 09mUnited Airlines
qua 9/36:35 amSTL - DSM
1 stop5h 39mUnited Airlines
Deal found 7/30$159
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 8/266:10 amOMA - STL
Nonstop1h 15mSouthwest
ter 9/28:45 pmSTL - OMA
Nonstop1h 15mSouthwest
Deal found 7/29$177
This FlightHub deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 10/153:30 pmDSM - STL
1 stop17h 37mFrontier
dom 10/197:52 pmSTL - DSM
1 stop24h 07mFrontier
Deal found 7/31$195
This Mytrip deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 8/37:51 pmOMA - STL
1 stop13h 20mFrontier
sáb 8/95:40 pmSTL - OMA
1 stop16h 36mFrontier
Deal found 7/28$197
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 8/275:44 amDSM - STL
1 stop6h 47mDelta
qua 9/36:40 amSTL - DSM
2 stops10h 32mDelta
Deal found 7/28$203
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 9/201:49 pmOMA - STL
1 stop6h 57mUnited Airlines
dom 9/218:20 amSTL - OMA
1 stop7h 35mUnited Airlines
Deal found 7/29$252
This American Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 8/96:16 amOMA - STL
1 stop5h 55mAmerican Airlines
qui 9/48:50 amSTL - OMA
1 stop6h 05mAmerican Airlines
Deal found 7/31$368
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 8/1410:53 amOMA - STL
1 stop5h 56mDelta
seg 8/185:30 pmSTL - OMA
1 stop5h 15mDelta
Deal found 7/30$391
This Mytrip deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 8/144:00 pmDSM - STL
2 stops21h 32mMultiple Airlines
seg 8/189:50 amSTL - DSM
2 stops7h 58mMultiple Airlines
Deal found 7/30$404
This American Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 10/236:15 pmLSE - STL
1 stop5h 39mAmerican Airlines
dom 10/267:54 pmSTL - LSE
1 stop3h 32mAmerican Airlines
Deal found 7/31$468

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated julho 31, 2025.
Use the filters below to find and compare flights from Iowa to St. Louis that are best for you.

Fly from

Iowa

Fly to

St. Louis

Route

Depart

Return

Price

Des MoinesSt. Louis

DSM - STL

DSMSTL

Des Moines

qua 8/27

8:25 am-9:30 am

Nonstop1h 05m

Lambert-St Louis

qua 9/3

9:15 pm-10:20 pm

Nonstop1h 05m

$97

Des MoinesSt. Louis

DSM - STL

DSMSTL

Des Moines

sáb 9/13

4:20 pm-8:32 pm

1 stop4h 12m

Lambert-St Louis

sáb 9/20

3:59 pm-11:13 pm

1 stop7h 14m

$158

Des MoinesSt. Louis

DSM - STL

DSMSTL

Des Moines

qua 8/27

11:35 am-3:44 pm

1 stop4h 09m

Lambert-St Louis

qua 9/3

6:35 am-12:14 pm

1 stop5h 39m

$159

OmahaSt. Louis

OMA - STL

OMASTL

Omaha Eppley Airfield

ter 8/26

6:10 am-7:25 am

Nonstop1h 15m

Lambert-St Louis

ter 9/2

8:45 pm-10:00 pm

Nonstop1h 15m

$177

Des MoinesSt. Louis

DSM - STL

DSMSTL

Des Moines

qua 10/15

3:30 pm-9:07 am

1 stop17h 37m

Lambert-St Louis

dom 10/19

7:52 pm-7:59 pm

1 stop24h 07m

$195

OmahaSt. Louis

OMA - STL

OMASTL

Omaha Eppley Airfield

dom 8/3

7:51 pm-9:11 am

1 stop13h 20m

Lambert-St Louis

sáb 8/9

5:40 pm-10:16 am

1 stop16h 36m

$197

Des MoinesSt. Louis

DSM - STL

DSMSTL

Des Moines

qua 8/27

5:44 am-12:31 pm

1 stop6h 47m

Lambert-St Louis

qua 9/3

6:40 am-5:12 pm

2 stops10h 32m

$203

OmahaSt. Louis

OMA - STL

OMASTL

Omaha Eppley Airfield

sáb 9/20

1:49 pm-8:46 pm

1 stop6h 57m

Lambert-St Louis

dom 9/21

8:20 am-3:55 pm

1 stop7h 35m

$252

OmahaSt. Louis

OMA - STL

OMASTL

Omaha Eppley Airfield

sáb 8/9

6:16 am-12:11 pm

1 stop5h 55m

Lambert-St Louis

qui 9/4

8:50 am-2:55 pm

1 stop6h 05m

$368

OmahaSt. Louis

OMA - STL

OMASTL

Omaha Eppley Airfield

qui 8/14

10:53 am-4:49 pm

1 stop5h 56m

Lambert-St Louis

seg 8/18

5:30 pm-10:45 pm

1 stop5h 15m

$391

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 28 results
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Best time to book a flight from Iowa to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Iowa with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Iowa to St. Louis

What is the cheapest month to book a flight from Iowa to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Iowa to St. Louis (average of $311). Flying from Iowa to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IA to STL?

Find hourly flight availability from Iowa to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julho 31, 2025.

When flying from Iowa to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated julho 31, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from Iowa to St. Louis to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Iowa to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Iowa?

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Iowa to St. Louis. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

  • How popular is this Iowa to St. Louis flight route?

    Within the past month, 30 users have taken a look at flights from Iowa to Lambert-St Louis.

  • What are the cheapest airlines to fly from Iowa to St. Louis one-way?

    $49 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $80 and $84, respectively.

  • What are the most popular routes from Iowa to St. Louis?

    The most popular flight routes from Iowa to St. Louis are Omaha Eppley Airfield - Lambert-St Louis, Des Moines - Lambert-St Louis and La Crosse - Lambert-St Louis.

  • What are the cheapest flights from Iowa to St. Louis?

    On average you can expect to pay $308 for a flight from Iowa to St. Louis. The cheapest flight overall is $93 while the most popular route, (Omaha Eppley Airfield - Lambert-St Louis) is currently priced at $187.

  • Can I find deals for flights from Iowa to St. Louis that include hotel bookings?

    Yes. In addition to deals on Iowa to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Iowa to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Iowa to St. Louis.

  • Can I find deals for business class flights from Iowa to St. Louis?

    Yes. Cheapflights offers flight deals from Iowa to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Iowa to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Iowa to St. Louis (average of $311). Flying from Iowa to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Festus
Farmington

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Alternative routes for Iowa to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Iowa to St. Louis

Discover the top 4 airlines that operate flights from Iowa to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julho 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Southern / MokuleleCheapest$61Average$85FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$97Average$309FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$218Average$368FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$218Average$298FlexibilityNo cancel feeOn-time71%

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