$34 Cheap Flights from Quincy (UIN) to St. Louis (STL)

View $34 flight on Thu, Oct 16, 2025Opens in a new window

Popular airlines from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Quincy to St. Louis (UIN-STL)

Prices were available within the past 7 days and start at $34 for one-way flights and $78 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southern Airways Express
Sat, Oct 11 - Sun, Oct 12
UIN
Quincy
STL
St. Louis
$78 Roundtrip, found 3 hours ago
$78
Roundtrip
found 3 hours ago
Select Southern Airways Express flight, departing Sat, Oct 11 from Quincy to St. Louis, returning Sun, Oct 12, priced at $78 found 3 hours ago
Southern Airways Express
Wed, Oct 8 - Wed, Oct 15
UIN
Quincy
STL
St. Louis
$88 Roundtrip, found 3 hours ago
$88
Roundtrip
found 3 hours ago
Select Southern Airways Express flight, departing Wed, Oct 8 from Quincy to St. Louis, returning Wed, Oct 15, priced at $88 found 3 hours ago
Southern Airways Express
Sun, Oct 12 - Fri, Oct 31
UIN
Quincy
STL
St. Louis
$98 Roundtrip, found 2 days ago
$98
Roundtrip
found 2 days ago
Select Southern Airways Express flight, departing Sun, Oct 12 from Quincy to St. Louis, returning Fri, Oct 31, priced at $98 found 2 days ago
Southern Airways Express
Fri, Sep 26 - Fri, Oct 3
UIN
Quincy
STL
St. Louis
$108 Roundtrip, found 1 day ago
$108
Roundtrip
found 1 day ago
Select Southern Airways Express flight, departing Fri, Sep 26 from Quincy to St. Louis, returning Fri, Oct 3, priced at $108 found 1 day ago
Southern Airways Express
Tue, Sep 23 - Thu, Oct 9
UIN
Quincy
STL
St. Louis
$128 Roundtrip, found 1 day ago
$128
Roundtrip
found 1 day ago
Select Southern Airways Express flight, departing Tue, Sep 23 from Quincy to St. Louis, returning Thu, Oct 9, priced at $128 found 1 day ago
Southern Airways Express
Mon, Sep 29 - Fri, Oct 3
UIN
Quincy
STL
St. Louis
$133 Roundtrip, found 6 days ago
$133
Roundtrip
found 6 days ago
Select Southern Airways Express flight, departing Mon, Sep 29 from Quincy to St. Louis, returning Fri, Oct 3, priced at $133 found 6 days ago
Southern Airways Express
Tue, Sep 23 - Fri, Sep 26
UIN
Quincy
STL
St. Louis
$138 Roundtrip, found 1 day ago
$138
Roundtrip
found 1 day ago
Select Southern Airways Express flight, departing Tue, Sep 23 from Quincy to St. Louis, returning Fri, Sep 26, priced at $138 found 1 day ago
Contour Airlines
Tue, Nov 18 - Thu, Nov 27
UIN
Quincy
STL
St. Louis
$246 Roundtrip, found 4 days ago
$246
Roundtrip
found 4 days ago
Select Contour Airlines flight, departing Tue, Nov 18 from Quincy to St. Louis, returning Thu, Nov 27, priced at $246 found 4 days ago
Contour Airlines
Mon, Dec 8 - Fri, Dec 12
UIN
Quincy
STL
St. Louis
$283 Roundtrip, found 3 days ago
$283
Roundtrip
found 3 days ago
Select Contour Airlines flight, departing Mon, Dec 8 from Quincy to St. Louis, returning Fri, Dec 12, priced at $283 found 3 days ago
Contour Airlines
Thu, Dec 11 - Tue, Jan 13
UIN
Quincy
STL
St. Louis
$286 Roundtrip, found 1 day ago
$286
Roundtrip
found 1 day ago
Select Contour Airlines flight, departing Thu, Dec 11 from Quincy to St. Louis, returning Tue, Jan 13, priced at $286 found 1 day ago

Find the cheapest month to fly from Quincy (UIN) to St. Louis (STL)

March is typically the cheapest month to fly

From $68 - $138 per traveler.

Frequently asked questions

How much does a flight from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL) cost?
Snag a cheap one-way flight from $34 or cheap return flight from $78 from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from UIN to STL is October, when demand is low. Off-peak season is usually when you'll find cheap fares for travel between these airports.
Which airlines fly direct from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL)?
Hop on a nonstop flight with Southern Airways Express and journey straight from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL).
What is the cheapest airline that flies from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline that'll fly you from UIN to STL, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL)?
When departing from Quincy Regional-Baldwin Field Airport (UIN), you'll have your pick from an average of 2 daily direct flights to Lambert-St. Louis Intl. Airport (STL).
What are the most popular departure times for flights from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL)?
The 7 AM departures from UIN to STL see the highest demand. These flights can come with a higher price due to their popularity. If you want to save on your fare, book during off-peak hours.
What day of the week has the most flights from UIN to STL?
Friday has the most flights from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL). Consider jetting off on this day and you'll have a greater chance of finding a departure that fits your itinerary.
What is the earliest flight from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL)?
Quincy Regional-Baldwin Field Airport (UIN)'s earliest flight to Lambert-St. Louis Intl. Airport (STL) departs at approximately 7:50AM UTC-6. With a travel duration of 1h, you'll land at around 8:50AM UTC-6.
How long does it take to fly from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL)?
It takes around 1 hour to cover the 95 mi from UIN to STL.
What is the best time to fly from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL)?
Book a flight from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL) that takes off before 3 PM to reduce the risk of cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for St. Louis from Quincy Regional-Baldwin Field Airport (UIN)?
Lambert-St. Louis Intl. Airport (STL) is the only airport in St. Louis with direct flights from Quincy Regional-Baldwin Field Airport (UIN). Compare the options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Last-minute bookings from UIN to STL are usually more expensive. To lock in the lowest prices, start searching for flights ahead of time. That said, if you can play around with your travel dates, you may land a cheap ticket right before you leave.
Is it cheaper to book an UIN to STL flight and hotel package?
Opting for an UIN to STL flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our wide range of stays and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Quincy Regional-Baldwin Field Airport (UIN) to Lambert-St. Louis Intl. Airport (STL)?
It's generally possible to reschedule or cancel your UIN to STL flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

0
Origin airport
Quincy Regional-Baldwin Field
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Southern Airways Express
Roundtrip price
$72
Distance
93 mi

Book with confidence

Book with confidence

Quincy to St. Louis Flights

The cheapest times to fly from Quincy to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Quincy to St. Louis are during the month of October. You can find some of the cheapest flights from Quincy to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Quincy to St. Louis

Sunday is one of the best days to book for cheap flights from Quincy to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Quincy to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Quincy to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $34 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Quincy to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Quincy to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Quincy to St. Louis Flights

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