How long is the flight from St. Louis to Marion, Illinois?

For as low as $478, American Airlines can have you in Marion, Illinois from St. Louis in 26h 24m. The distance between St. Louis and Marion, Illinois is about 101 mi.

In terms of precipitation, rainfall in Marion, Illinois ranges from 3.1 - 4.9 inches per month. May is typically the wettest month, when rainfall can reach 4.9 in. September is typically the driest time to visit Marion, Illinois when rainfall is around 3.1 in.

If weather is an important factor for your trip to Marion, Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

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

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

Most accurate provider : When it comes to deals on St. Louis-Marion, Illinois flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Marion, Illinois flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Marion, Illinois flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Marion, Illinois flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Marion, Illinois flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

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

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

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

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

$478+ Cheap Flights from St. Louis to Marion, IL

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from St. Louis to Marion with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Marion

Cheapest

Best

Cheapest flights from St. Louis to Marion
Explore the most affordable flight options available from St. Louis to Marion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Fri 12/117:27 am -

1 stop26h 24m

Fri 12/185:00 am -

1 stop35h 49m

Deal found 10/27

$478

Sun 12/135:38 pm -

1 stop30h 58m

Sun 12/205:00 am -

1 stop27h 29m

Deal found 10/29

$518

Find flight deals from St. Louis to Marion

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$478 (American Airlines)

Provider with most accurate pricing for Lambert-St Louis-Marion Williamson County flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Marion Williamson County flights.

Search Deals

From Lambert-St Louis to Marion Williamson County

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMarion

STL Lambert-St Louis - MWA Marion Williamson County

STLMWA

Lambert-St Louis

Fri 12/11

7:27 am-9:51 am

1 stop26h 24m

Marion Williamson County

Fri 12/18

5:00 am-4:49 pm

1 stop35h 49m

$478

Quickest round-trip

St. LouisMarion

STL Lambert-St Louis - MWA Marion Williamson County

STLMWA

Lambert-St Louis

Sun 12/13

5:38 pm-12:36 am

1 stop30h 58m

Marion Williamson County

Sun 12/20

5:00 am-8:29 am

1 stop27h 29m

$518

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Sorted by cheapest first

Compare providers for flights from St. Louis to Marion

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Marion in October.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy2 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-Marion, Illinois flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Marion, Illinois flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Marion, Illinois flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Marion, Illinois flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Marion, Illinois flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to Marion from St. Louis with our price prediction graph.

STL-MWA

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.

Related info for your journey

How long is the flight from St. Louis to Marion, Illinois?
For as low as $478, American Airlines can have you in Marion, Illinois from St. Louis in 26h 24m. The distance between St. Louis and Marion, Illinois is about 101 mi.
Can I find deals for flights from St. Louis to Marion that include hotel bookings?
Yes. In addition to deals on St. Louis to Marion flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Marion?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Marion.
Can I find deals for business class flights from St. Louis to Marion?
Yes. Cheapflights offers flight deals from St. Louis to Marion by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Chester

Mount Vernon

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Flights by cabin class

Marion flight routes

Other flight options

Other flights from St. Louis

Popular flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$478+ Cheap flights from St. Louis to Marion, IL (STL - MWA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/11. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Marion with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to Marion

Cheapest flights from St. Louis to MarionExplore the most affordable flight options available from St. Louis to Marion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Explore the most affordable flight options available from St. Louis to Marion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Best flights from St. Louis to MarionDiscover carefully curated flight deals from St. Louis to Marion that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Discover carefully curated flight deals from St. Louis to Marion that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.

Find flight deals from St. Louis to Marion

Most accurate provider

Most trusted provider

Round-trip from

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Marion that are best for you.

Compare providers for flights from St. Louis to Marion

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Marion in October.

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

Have a flexible travel schedule? Discover the best time to fly to Marion from St. Louis with our price prediction graph.

Related info for your journey

How long is the flight from St. Louis to Marion, Illinois?

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

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

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

Traveling to a place near Marion?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Marion

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Marion by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from St. Louis to Marion by cabin class

Find flights from St. Louis to Marion, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Marion

Explore flights to Marion departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.

St. Louis and Marion flights

Browse other St. Louis and Marion flight options. Last updated on October 30, 2026.

Other flights from St. Louis

Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from St. Louis to Marion
Explore the most affordable flight options available from St. Louis to Marion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.

Best flights from St. Louis to Marion
Discover carefully curated flight deals from St. Louis to Marion that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.