$209 Cheap Flights from Dubuque (DBQ) to St. Louis (STL)

View $209 flight on Wed, Dec 3, 2025Opens in a new window

Popular airlines from Dubuque, IA (DBQ-Dubuque Regional) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Dubuque to St. Louis (DBQ-STL)

Prices were available within the past 7 days and start at $209 for one-way flights and $404 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KEY LIME AIR DBA DENVER AIR CONNECTION
Tue, Nov 11 - Wed, Nov 12
DBQ
Dubuque
STL
St. Louis
$404 Roundtrip, found 13 hours ago
$404
Roundtrip
found 13 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Tue, Nov 11 from Dubuque to St. Louis, returning Wed, Nov 12, priced at $404 found 13 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Sat, Nov 8 - Wed, Nov 12
DBQ
Dubuque
STL
St. Louis
$411 Roundtrip, found 13 hours ago
$411
Roundtrip
found 13 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sat, Nov 8 from Dubuque to St. Louis, returning Wed, Nov 12, priced at $411 found 13 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Tue, Nov 11 - Wed, Nov 19
DBQ
Dubuque
STL
St. Louis
$415 Roundtrip, found 13 hours ago
$415
Roundtrip
found 13 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Tue, Nov 11 from Dubuque to St. Louis, returning Wed, Nov 19, priced at $415 found 13 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Tue, Nov 11 - Sat, Nov 15
DBQ
Dubuque
STL
St. Louis
$421 Roundtrip, found 13 hours ago
$421
Roundtrip
found 13 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Tue, Nov 11 from Dubuque to St. Louis, returning Sat, Nov 15, priced at $421 found 13 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Mon, Nov 10 - Tue, Nov 11
DBQ
Dubuque
STL
St. Louis
$425 Roundtrip, found 13 hours ago
$425
Roundtrip
found 13 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Mon, Nov 10 from Dubuque to St. Louis, returning Tue, Nov 11, priced at $425 found 13 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Sat, Nov 8 - Sat, Nov 15
DBQ
Dubuque
STL
St. Louis
$428 Roundtrip, found 13 hours ago
$428
Roundtrip
found 13 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sat, Nov 8 from Dubuque to St. Louis, returning Sat, Nov 15, priced at $428 found 13 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Sat, Nov 8 - Thu, Nov 13
DBQ
Dubuque
STL
St. Louis
$432 Roundtrip, found 13 hours ago
$432
Roundtrip
found 13 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Sat, Nov 8 from Dubuque to St. Louis, returning Thu, Nov 13, priced at $432 found 13 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Wed, Nov 12 - Mon, Nov 17
DBQ
Dubuque
STL
St. Louis
$434 Roundtrip, found 13 hours ago
$434
Roundtrip
found 13 hours ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Wed, Nov 12 from Dubuque to St. Louis, returning Mon, Nov 17, priced at $434 found 13 hours ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Wed, Nov 5 - Sat, Nov 15
DBQ
Dubuque
STL
St. Louis
$438 Roundtrip, found 1 day ago
$438
Roundtrip
found 1 day ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Wed, Nov 5 from Dubuque to St. Louis, returning Sat, Nov 15, priced at $438 found 1 day ago
KEY LIME AIR DBA DENVER AIR CONNECTION
Wed, Nov 12 - Sat, Nov 15
DBQ
Dubuque
STL
St. Louis
$441 Roundtrip, found 5 days ago
$441
Roundtrip
found 5 days ago
Select KEY LIME AIR DBA DENVER AIR CONNECTION flight, departing Wed, Nov 12 from Dubuque to St. Louis, returning Sat, Nov 15, priced at $441 found 5 days ago

Frequently asked questions

How much does a flight from Dubuque Regional Airport (DBQ) to Lambert-St. Louis Intl. Airport (STL) cost?
Snag a cheap one-way flight from $209 or cheap return flight from $404 from Dubuque Regional Airport (DBQ) 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 Dubuque Regional Airport (DBQ) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from DBQ to STL is November, when demand is low. Off-peak season is typically when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Dubuque Regional Airport (DBQ) to Lambert-St. Louis Intl. Airport (STL)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest DBQ to STL flight.
How many flights per day from Dubuque Regional Airport (DBQ) to Lambert-St. Louis Intl. Airport (STL)?
There are no daily nonstop flights from Dubuque Regional Airport (DBQ) to Lambert-St. Louis Intl. Airport (STL). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way in no time at all.
What day of the week has the most flights from DBQ to STL?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Dubuque Regional Airport (DBQ) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the Dubuque Regional Airport (DBQ) to Lambert-St. Louis Intl. Airport (STL) route, aim to fly before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**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.
Is it cheaper to buy a plane ticket from Dubuque Regional Airport (DBQ) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your plane ticket from DBQ to STL shortly before your getaway is generally more expensive. However, if you're flexible with your travel times and dates, you could land a cheap last-minute fare.
Is it cheaper to book a DBQ to STL flight and hotel package?
Opting for a DBQ to STL flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our impressive range of accommodations and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Dubuque Regional Airport (DBQ) to Lambert-St. Louis Intl. Airport (STL)?
Usually, it's possible to reschedule or cancel your DBQ to STL flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Dubuque Regional
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
$404
Distance
253 mi

Book with confidence

Dubuque to St. Louis Flights

The cheapest times to fly from Dubuque 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 Dubuque to St. Louis are during the month of November. You can find some of the cheapest flights from Dubuque to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Dubuque 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 Dubuque 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 Dubuque to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $209 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 Dubuque 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 Dubuque 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.

 

Dubuque to St. Louis Flights

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*Available to One Key members.