$138 Cheap Flights from St. Louis (STL) to Quincy (UIN)

View $138 flight on Wed, Apr 29, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $138 for one-way flights and $439 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Apr 23 - Thu, Apr 30
STL
St. Louis
UIN
Quincy
$439 Roundtrip, found 8 hours ago
$439
Roundtrip
found 8 hours ago
Select United flight, departing Thu, Apr 23 from St. Louis to Quincy, returning Thu, Apr 30, priced at $439 found 8 hours ago
American Airlines
Thu, Apr 23 - Thu, Apr 30
STL
St. Louis
UIN
Quincy
$474 Roundtrip, found 8 hours ago
$474
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, Apr 23 from St. Louis to Quincy, returning Thu, Apr 30, priced at $474 found 8 hours ago
American Airlines
Thu, Apr 23 - Thu, Apr 30
STL
St. Louis
UIN
Quincy
$509 Roundtrip, found 8 hours ago
$509
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, Apr 23 from St. Louis to Quincy, returning Thu, Apr 30, priced at $509 found 8 hours ago
American Airlines
Thu, Apr 23 - Thu, Apr 30
STL
St. Louis
UIN
Quincy
$519 Roundtrip, found 8 hours ago
$519
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, Apr 23 from St. Louis to Quincy, returning Thu, Apr 30, priced at $519 found 8 hours ago
United
Thu, Apr 23 - Thu, Apr 30
STL
St. Louis
UIN
Quincy
$528 Roundtrip, found 8 hours ago
$528
Roundtrip
found 8 hours ago
Select United flight, departing Thu, Apr 23 from St. Louis to Quincy, returning Thu, Apr 30, priced at $528 found 8 hours ago
United
Thu, Apr 23 - Thu, Apr 30
STL
St. Louis
UIN
Quincy
$545 Roundtrip, found 8 hours ago
$545
Roundtrip
found 8 hours ago
Select United flight, departing Thu, Apr 23 from St. Louis to Quincy, returning Thu, Apr 30, priced at $545 found 8 hours ago
American Airlines
Thu, Apr 23 - Thu, Apr 30
STL
St. Louis
UIN
Quincy
$562 Roundtrip, found 8 hours ago
$562
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, Apr 23 from St. Louis to Quincy, returning Thu, Apr 30, priced at $562 found 8 hours ago
American Airlines
Thu, Apr 23 - Thu, Apr 30
STL
St. Louis
UIN
Quincy
$563 Roundtrip, found 8 hours ago
$563
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, Apr 23 from St. Louis to Quincy, returning Thu, Apr 30, priced at $563 found 8 hours ago
American Airlines
Thu, Apr 23 - Thu, Apr 30
STL
St. Louis
UIN
Quincy
$569 Roundtrip, found 8 hours ago
$569
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, Apr 23 from St. Louis to Quincy, returning Thu, Apr 30, priced at $569 found 8 hours ago
United
Thu, Apr 23 - Thu, Apr 30
STL
St. Louis
UIN
Quincy
$577 Roundtrip, found 8 hours ago
$577
Roundtrip
found 8 hours ago
Select United flight, departing Thu, Apr 23 from St. Louis to Quincy, returning Thu, Apr 30, priced at $577 found 8 hours ago

Alternative airports near Quincy

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Quincy Regional-Baldwin Field UIN. Cheapest and Closest option available. Average driving time to city center is 18 minutes. Flights from $439
UIN
Quincy Regional-Baldwin Field
CheapestClosest
Average driving time to city center18 min
Flights from $439

Frequently asked questions

How much does a flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field) cost?
You can find cheap one-way flights from $138 and cheap return flights from $439 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field) with Expedia. One-way flights typically cost between $39 and $79, and return flights often range between $88 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 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field) 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 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field)?
The cheapest month to fly from STL to UIN is April 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 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field)?
Enter STL to UIN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field)?
Southern Airways Express is one of the cheapest airlines offering nonstop flights from Lambert-St. Louis Intl. (STL) to Quincy Regional-Baldwin Field (UIN), with round-trip tickets starting from around $88. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field)?
To find a cheap flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field), 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 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field)?
The best airline to fly with from St. Louis, MO (STL) to Quincy, IL (UIN) 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. United offers the most daily flights from St. Louis to Quincy, 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 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field)?
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 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field)?
The earliest flight from St. Louis, MO (STL) to Quincy, IL (UIN) typically departs at around 9:20 AM, operated by Southern Airways Express. This service operates year-round, making it convenient for your travel plans. 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 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field)?
The most popular departure times for flights from St. Louis (STL) to Quincy (UIN) are in the early afternoon, from 12pm to 3pm. About 58% of passengers prefer this time window. Southern Airways Express is a major carrier offering flights during this window. This timing is favored as it allows you to travel during the day and arrive in Quincy in the afternoon.
How long does it take to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field)?
Flying nonstop from STL to UIN takes around 50 minutes, with the route covering approximately 94 miles. Flights with a layover typically take 8 hours 40 minutes longer than direct options. 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 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field)?
Select the "Business class" and "First class" filters when looking for STL to UIN 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 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field) flight with Expedia?
It's easy to earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field) 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 Quincy from Lambert-St. Louis Intl. (STL)?
If you're planning to travel to Quincy from Lambert-St. Louis Intl. (STL), you can fly typically into Quincy Regional-Baldwin Field (UIN) 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 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field) at the last minute?
Typically, booking a last minute flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field) 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 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field) flight and hotel package?
Securing a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field) flight and hotel package 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 St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field)?
If you booked your St. Louis, MO (STL-Lambert-St. Louis Intl.) to Quincy, IL (UIN-Quincy Regional-Baldwin Field) 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
Lambert-St. Louis Intl.
Destination airport
Quincy Regional-Baldwin Field
Roundtrip price
$304
Distance
93 mi

Book with confidence

St. Louis to Quincy Flights

The cheapest times to fly from St. Louis to Quincy

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 St. Louis to Quincy are during the month of April. You can find some of the cheapest flights from St. Louis to Quincy with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Quincy: 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 St. Louis to Quincy

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 St. Louis to Quincy in 2026. You can also book with separate airlines for your outbound and return journeys, from $138 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 St. Louis to Quincy 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 St. Louis to Quincy 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.

 

St. Louis to Quincy Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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