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St. Louis

$51+ Cheap flights from Midway (MDW) 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
MDW — STL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Midway to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Midway (MDW) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$101
(Southwest)

One-way from

$51
(Southwest)

Popular in

November

Cheapest in

April

Average price

$192

Good round-trip deal

$196 or less

Good one-way deal

$118 or less
From Chicago Midway to Lambert-St Louis
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One-way flight from Chicago Midway to Lambert-St Louis
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Highest demand for flights based on searches. 20% potential increase in price ($100 potential increase over avg. RT price).
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Cheapest flight prices on average. 12% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Chicago Midway to Lambert-St Louis.
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Price to beat on a one-way flight from Chicago Midway to Lambert-St Louis.
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Find flight deals from Midway to St. Louis

Cheapest flights from Midway to St. Louis
Explore the most affordable flight options available from Midway to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Southwest deal was found by Cheapflights users on 9/11. 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.
Wed 11/511:25 amMDW - STL
Nonstop1h 10mSouthwest
Sat 11/86:25 amSTL - MDW
Nonstop1h 10mSouthwest
Deal found 9/11$101
This Southwest deal was found by Cheapflights users on 9/9. 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.
Sat 10/113:50 pmMDW - STL
Nonstop1h 10mSouthwest
Mon 10/135:40 amSTL - MDW
Nonstop1h 10mSouthwest
Deal found 9/9$117
This Southwest deal was found by Cheapflights users on 9/11. 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.
Wed 10/11:10 pmMDW - STL
Nonstop1h 15mSouthwest
Sat 10/45:55 pmSTL - MDW
Nonstop1h 10mSouthwest
Deal found 9/11$134
This Priceline deal was found by Cheapflights users on 9/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:20 amMDW - STL
1 stop8h 44mFrontier
Mon 9/294:00 pmSTL - MDW
1 stop7h 20mFrontier
Deal found 9/10$143
This Southwest deal was found by Cheapflights users on 9/8. 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.
Tue 10/145:55 pmMDW - STL
Nonstop1h 15mSouthwest
Wed 10/155:05 pmSTL - MDW
Nonstop1h 05mSouthwest
Deal found 9/8$144
This Southwest deal was found by Cheapflights users on 9/10. 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.
Mon 11/36:20 amMDW - STL
Nonstop1h 15mSouthwest
Wed 11/58:20 amSTL - MDW
1 stop6h 25mSouthwest
Deal found 9/10$149
This Frontier deal was found by Cheapflights users on 9/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/56:20 amMDW - STL
1 stop8h 44mFrontier
Mon 10/64:00 pmSTL - MDW
1 stop7h 41mFrontier
Deal found 9/10$152
This Frontier deal was found by Cheapflights users on 9/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:20 amMDW - STL
1 stop8h 44mFrontier
Mon 10/64:00 pmSTL - MDW
1 stop7h 41mFrontier
Deal found 9/11$153
This Frontier deal was found by Cheapflights users on 9/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:20 amMDW - STL
1 stop8h 44mFrontier
Thu 10/24:00 pmSTL - MDW
1 stop7h 41mFrontier
Deal found 9/11$154
This Southwest deal was found by Cheapflights users on 9/9. 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.
Thu 10/27:40 amMDW - STL
Nonstop1h 10mSouthwest
Mon 10/66:30 pmSTL - MDW
Nonstop1h 10mSouthwest
Deal found 9/9$157
This Southwest deal was found by Cheapflights users on 9/9. 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.
Tue 10/77:55 amMDW - STL
Nonstop1h 15mSouthwest
Fri 10/105:40 amSTL - MDW
Nonstop1h 10mSouthwest
Deal found 9/9$158

Cheapflights Fare Finder

 
Customize your flight search to find flights from Midway 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 September 11, 2025.
Use the filters below to find and compare flights from Chicago Midway Airport to St. Louis that are best for you.

Fly from

Midway

Fly to

St. Louis

Route

Depart

Return

Price

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Mon 11/3

6:20 am-7:35 am

Nonstop1h 15m

Lambert-St Louis

Wed 11/5

7:00 am-8:10 am

Nonstop1h 10m

$117

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Wed 10/1

1:10 pm-2:25 pm

Nonstop1h 15m

Lambert-St Louis

Sat 10/4

5:55 pm-7:05 pm

Nonstop1h 10m

$134

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Fri 10/3

9:48 am-8:37 pm

1 stop10h 49m

Lambert-St Louis

Mon 10/6

4:00 pm-11:41 pm

1 stop7h 41m

$154

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 10/2

7:40 am-8:50 am

Nonstop1h 10m

Lambert-St Louis

Mon 10/6

6:30 pm-7:40 pm

Nonstop1h 10m

$157

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Sat 10/11

8:15 am-2:40 pm

1 stop6h 25m

Lambert-St Louis

Mon 10/13

5:40 am-6:50 am

Nonstop1h 10m

$160

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Tue 10/21

9:20 am-2:32 pm

1 stop5h 12m

Lambert-St Louis

Fri 10/24

5:15 pm-10:14 pm

1 stop4h 59m

$177

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Sat 1/24

7:40 pm-8:55 pm

Nonstop1h 15m

$51

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Wed 10/1

1:10 pm-2:25 pm

Nonstop1h 15m

$66

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Wed 1/28

7:45 pm-9:00 pm

Nonstop1h 15m

$67

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 12/11

9:05 pm-10:20 pm

Nonstop1h 15m

$67

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 17 results
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The best insider tips for Chicago Midway Airport to St. Louis flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago Midway Airport to St. Louis trip
Airports
MDW

Use the Orange Line for a quick, affordable trip to MDW. It operates nearly 24 hours, reaching downtown in under 30 minutes.

Read more about MDWby Ramsey Qubein
STL

Take the MetroLink from STL for a convenient, cost-effective ride to downtown St. Louis in about 40 minutes.

Read more about STLby Taryn White
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on MDW

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Taryn White

Taryn White

Expert on STL

Taryn White

Taryn White

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Read more

Best time to book a flight from Midway to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Midway 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 Chicago Midway Airport to St. Louis

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

Find hourly flight availability from Midway 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 September 11, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 41% on flights from Chicago Midway Airport to St. Louis by exploring options for tickets in the evening.

What is the cheapest day to fly from Chicago Midway Airport to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Midway to St. Louis. Price data was last updated on September 7, 2025.

Travelers seeking maximum savings on their Chicago Midway Airport to St. Louis flight should consider departing on Thursday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 September 11, 2025.
See what other customers who have flown with Southwest from Chicago Midway Airport to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Midway 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 Chicago Midway?

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to St. Louis from Chicago Midway. Booking flights from Chicago Midway to Lambert-St Louis (STL) should be relatively easy as there are 3 daily inbound flights from Chicago Midway from 1 airline.

  • How long is the flight from Chicago Midway Airport to St. Louis?

    Airlines like Southwest and Frontier fly from Chicago Midway Airport to St. Louis in about 1h 15m. The time it takes to get you to your destination can typically vary by up to 9h 34m. The distance from Chicago Midway Airport to St. Louis is about 251 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Chicago Midway Airport to St. Louis round-trip?

    Currently priced at $77, Southwest will fly you from Chicago Midway Airport to St. Louis and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Southwest is currently priced 80% below the average price you’ll pay for this route.

  • What are the cheapest flights from Chicago Midway Airport to St. Louis?

    While on average a flight from Chicago Midway Airport to St. Louis is generally $261, our data shows the cheapest flight currently is $73. When looking at the most popular route, (Chicago Midway - Lambert-St Louis), you can expect to pay $101 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Midway 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 Chicago Midway Airport to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Chicago Midway Airport to St. Louis (average of $311). Flying from Chicago Midway Airport 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
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Midway to St. Louis

Discover the top airline that operate flights from Midway 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$77Average$328FlexibilityNo cancel feeOn-time63%

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