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St. Louis

$309+ Cheap flights from Green Bay to St. Louis (GRB - STL)

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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — STL
May 4 — May 111
Mon 5/4
Mon 5/11
1 adult, Economy
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Cheap flight deals from Green Bay to St. Louis

Cheapest flights from Green Bay to St. Louis
Explore the most affordable flight options available from Green Bay to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 4, 2026.

This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/215:26 pm
GRB
-
STL
1 stop3h 50m
United Airlines
Mon 5/2510:20 am
STL
-
GRB
1 stop3h 40m
United Airlines
Deal found 3/31$309
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:51 pm
GRB
-
STL
2 stops8h 42m
American Airlines
Sat 9/128:07 pm
STL
-
GRB
1 stop3h 00m
American Airlines
Deal found 3/31$314
This American Airlines deal was found by Cheapflights users on 4/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/175:24 pm
GRB
-
STL
1 stop4h 53m
American Airlines
Sat 4/187:00 am
STL
-
GRB
2 stops9h 54m
American Airlines
Deal found 4/3$324
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/216:51 pm
GRB
-
STL
1 stop5h 03m
American Airlines
Sat 5/239:41 am
STL
-
GRB
2 stops8h 38m
American Airlines
Deal found 3/31$360
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/25:35 pm
GRB
-
STL
1 stop5h 44m
United Airlines
Wed 5/68:21 am
STL
-
GRB
1 stop5h 37m
United Airlines
Deal found 4/1$361
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/212:55 pm
GRB
-
STL
1 stop5h 35m
American Airlines
Mon 5/259:24 am
STL
-
GRB
2 stops8h 55m
American Airlines
Deal found 3/31$377
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:00 am
GRB
-
STL
1 stop5h 03m
American Airlines
Mon 4/66:00 am
STL
-
GRB
1 stop3h 27m
American Airlines
Deal found 3/31$379
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:30 pm
GRB
-
STL
1 stop4h 00m
United Airlines
Sat 9/51:18 pm
STL
-
GRB
1 stop3h 38m
United Airlines
Deal found 3/31$380
This American Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/305:40 am
GRB
-
STL
2 stops7h 42m
American Airlines
Mon 5/42:12 pm
STL
-
GRB
2 stops9h 19m
American Airlines
Deal found 3/30$383

Find flight deals from Green Bay to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Green Bay (GRB) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(United Airlines)

Popular in

May

Cheapest in

November

Average price

$281
Provider with most accurate pricing for Green Bay Austin-Straubel-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Green Bay Austin-Straubel-Lambert-St Louis flights.
Search Deals
From Green Bay Austin-Straubel to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Green Bay to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 4, 2026.
Use the filters below to find and compare flights from Green Bay to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Green BaySt. Louis

GRB - STL

GRBSTL

Green Bay Austin-Straubel

Thu 5/21

11:53 am-4:46 pm

1 stop4h 53m

Lambert-St Louis

Sun 5/24

6:45 am-10:31 am

1 stop3h 46m

$309
Quickest round-trip

Green BaySt. Louis

GRB - STL

GRBSTL

Green Bay Austin-Straubel

Thu 5/21

5:26 pm-9:16 pm

1 stop3h 50m

Lambert-St Louis

Mon 5/25

10:20 am-2:00 pm

1 stop3h 40m

$309

Green BaySt. Louis

GRB - STL

GRBSTL

Green Bay Austin-Straubel

Thu 4/30

7:00 am-1:05 pm

1 stop6h 05m

Lambert-St Louis

Mon 5/4

5:35 pm-9:59 pm

1 stop4h 24m

$309

Green BaySt. Louis

GRB - STL

GRBSTL

Green Bay Austin-Straubel

Thu 5/21

11:53 am-4:46 pm

1 stop4h 53m

Lambert-St Louis

Sat 5/23

5:36 pm-9:58 pm

1 stop4h 22m

$309

Green BaySt. Louis

GRB - STL

GRBSTL

Green Bay Austin-Straubel

Thu 4/30

7:00 am-1:05 pm

1 stop6h 05m

Lambert-St Louis

Sun 5/3

6:20 am-11:18 am

1 stop4h 58m

$309

Green BaySt. Louis

GRB - STL

GRBSTL

Green Bay Austin-Straubel

Fri 4/17

5:40 pm-9:13 pm

1 stop3h 33m

Lambert-St Louis

Sat 4/18

11:15 am-4:53 pm

1 stop5h 38m

$319

Green BaySt. Louis

GRB - STL

GRBSTL

Green Bay Austin-Straubel

Fri 4/17

4:22 pm-11:14 pm

1 stop6h 52m

Lambert-St Louis

Sat 4/18

6:48 am-10:26 am

1 stop3h 38m

$319

Green BaySt. Louis

GRB - STL

GRBSTL

Green Bay Austin-Straubel

Fri 4/17

5:24 pm-10:17 pm

1 stop4h 53m

Lambert-St Louis

Tue 4/21

7:00 am-5:00 pm

2 stops10h 00m

$324

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Sorted by cheapest first

Compare providers for flights from Green Bay to St. Louis

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 Green Bay to St. Louis in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 Green Bay-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Green Bay-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Green Bay-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Green Bay-St. Louis 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 Green Bay-St. Louis 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 Green Bay to St. Louis

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

Cheapflights Insights

Everything you need to know about your flight from Green Bay to St. Louis

What is the cheapest month to book a flight from Green Bay to St. Louis?

Currently, April is the cheapest month in which you can book a flight from Green Bay to St. Louis (average of $197). Flying from Green Bay to St. Louis in December is currently the most expensive (average of $288). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Green Bay to St. Louis?

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated April 4, 2026.
Read through reviews of airlines operating flights from Green Bay to St. Louis, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,541 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,541 reviews
United Airlines
7.4
Good
9,541 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.1
Good
11,556 reviews
United Airlines
7.4
Good
9,541 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Green Bay to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Green Bay to St. Louis?

    For as low as $309, Delta can have you in St. Louis from Green Bay in 3h 50m. The distance between Green Bay and St. Louis is about 412 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Green Bay to St. Louis round-trip?

    Flying on American Airlines is currently your cheapest option to St. Louis, with prices starting at $228. Another option worth looking into is United Airlines, starting at $248 round trip. American Airlines is currently priced 37% below the average price you’ll pay for this route.

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

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

  • How can I find direct flights from Green Bay to St. Louis?

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

  • Can I find deals for business class flights from Green Bay to St. Louis?

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

  • What is the cheapest month to book a flight from Green Bay to St. Louis?

    Currently, April is the cheapest month in which you can book a flight from Green Bay to St. Louis (average of $197). Flying from Green Bay to St. Louis in December is currently the most expensive (average of $288). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Green Bay to St. Louis

Discover the top 2 airlines that operate flights from Green Bay to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$228Average$288FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$248Average$411FlexibilityNo cancel feeOn-time69%

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