$148 Cheap Flights from Quincy (UIN) to St. Louis (STL)

View $148 flight on Wed, May 27, 2026Opens 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 $148 for one-way flights and $296 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Contour Airlines
Wed, May 27 - Tue, Jun 2
UIN
Quincy
STL
St. Louis
$296 Roundtrip, just found
$296
Roundtrip
just found
Select Contour Airlines flight, departing Wed, May 27 from Quincy to St. Louis, returning Tue, Jun 2, priced at $296 just found
Contour Airlines
Thu, May 21 - Tue, May 26
UIN
Quincy
STL
St. Louis
$323 Roundtrip, found 1 day ago
$323
Roundtrip
found 1 day ago
Select Contour Airlines flight, departing Thu, May 21 from Quincy to St. Louis, returning Tue, May 26, priced at $323 found 1 day ago
Contour Airlines
Wed, May 27 - Tue, Jun 2
UIN
Quincy
STL
St. Louis
$329 Roundtrip, found 3 days ago
$329
Roundtrip
found 3 days ago
Select Contour Airlines flight, departing Wed, May 27 from Quincy to St. Louis, returning Tue, Jun 2, priced at $329 found 3 days ago
Contour Airlines
Wed, May 27 - Tue, Jun 2
UIN
Quincy
STL
St. Louis
$350 Roundtrip, found 3 days ago
$350
Roundtrip
found 3 days ago
Select Contour Airlines flight, departing Wed, May 27 from Quincy to St. Louis, returning Tue, Jun 2, priced at $350 found 3 days ago
Contour Airlines
Wed, May 27 - Tue, Jun 2
UIN
Quincy
STL
St. Louis
$356 Roundtrip, found 3 days ago
$356
Roundtrip
found 3 days ago
Select Contour Airlines flight, departing Wed, May 27 from Quincy to St. Louis, returning Tue, Jun 2, priced at $356 found 3 days ago
Contour Airlines
Wed, May 27 - Tue, Jun 2
UIN
Quincy
STL
St. Louis
$358 Roundtrip, just found
$358
Roundtrip
just found
Select Contour Airlines flight, departing Wed, May 27 from Quincy to St. Louis, returning Tue, Jun 2, priced at $358 just found
Contour Airlines
Wed, May 27 - Tue, Jun 2
UIN
Quincy
STL
St. Louis
$364 Roundtrip, just found
$364
Roundtrip
just found
Select Contour Airlines flight, departing Wed, May 27 from Quincy to St. Louis, returning Tue, Jun 2, priced at $364 just found
Contour Airlines
Wed, May 27 - Tue, Jun 2
UIN
Quincy
STL
St. Louis
$368 Roundtrip, just found
$368
Roundtrip
just found
Select Contour Airlines flight, departing Wed, May 27 from Quincy to St. Louis, returning Tue, Jun 2, priced at $368 just found
Contour Airlines
Wed, May 27 - Tue, Jun 2
UIN
Quincy
STL
St. Louis
$372 Roundtrip, found 5 days ago
$372
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Wed, May 27 from Quincy to St. Louis, returning Tue, Jun 2, priced at $372 found 5 days ago
Contour Airlines
Wed, May 27 - Tue, Jun 2
UIN
Quincy
STL
St. Louis
$377 Roundtrip, found 5 days ago
$377
Roundtrip
found 5 days ago
Select Contour Airlines flight, departing Wed, May 27 from Quincy to St. Louis, returning Tue, Jun 2, priced at $377 found 5 days ago

Frequently asked questions

How much does a flight from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
You can find cheap one-way flights and cheap return flights from $296 Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.) with Expedia. One-way flights usually range from $34 to $79, and return flights typically cost between $78 and $158. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The cheapest month to fly from UIN to STL is May when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Enter UIN to STL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best airline to fly with from Quincy, IL (UIN) to St. Louis, MO (STL) will differ from traveler to traveler. If you like to fly early, Southern Airways Express offers early morning flights. If price is the most important factor, Southern Airways Express typically offers the lowest fares. Contour Airlines offers the most daily flights from Quincy to St. Louis, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The earliest flight from Quincy Regional-Baldwin Field (UIN) to Lambert-St. Louis International Airport (STL) usually departs at around 7:50 AM, operated by Southern Airways Express. This flight allows you to arrive in St. Louis with plenty of time to explore the city. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The most popular departure times for flights from Quincy, IL (UIN) to St. Louis, MO (STL) are in the early morning, from 6am to 9am. About 38% of passengers prefer this time window. Southern Airways Express offers flights during this window. Many travelers choose this timing to make the most of their day in St. Louis.
How long does it take to fly from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
A nonstop flight from UIN to STL typically takes around 50 minutes, covering approximately 94 miles. Connecting flights on this route usually add 3 hours to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Select the "Business class" and "First class" filters when looking for UIN to STL flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for St. Louis from Quincy Regional-Baldwin Field (UIN)?
From Quincy Regional-Baldwin Field (UIN), you can fly typically into Lambert-St. Louis Intl. (STL) to reach St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.) St Louis Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals 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, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your Quincy, IL (UIN-Quincy Regional-Baldwin Field) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Quincy Regional-Baldwin Field
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
$296
Distance
93 mi

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 May. 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 2026. You can also book with separate airlines for your outbound and return journeys, from $148 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

*Flight schedules are subject to change.

*Available to One Key members.

 

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