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St. Louis

$259+ Cheap flights from Dayton to St. Louis (DAY - 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — STL
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from Dayton to St. Louis

Cheapest flights from Dayton to St. Louis
Explore the most affordable flight options available from Dayton to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This American Airlines deal was found by Cheapflights users on 1/20. 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.
Wed 2/46:00 am
DAY
-
STL
1 stop6h 41m
American Airlines
Sun 2/83:54 pm
STL
-
DAY
1 stop4h 14m
American Airlines
Deal found 1/20$259
This Delta deal was found by Cheapflights users on 1/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:44 pm
DAY
-
STL
1 stop5h 52m
Delta
Thu 3/126:00 am
STL
-
DAY
1 stop6h 49m
Delta
Deal found 1/21$318
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Wed 2/49:20 am
DAY
-
STL
1 stop4h 09m
United Airlines
Sun 2/88:05 am
STL
-
DAY
1 stop4h 18m
United Airlines
Deal found 1/19$319
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Tue 1/207:10 pm
DAY
-
STL
1 stop5h 02m
American Airlines
Thu 2/58:31 am
STL
-
DAY
1 stop6h 14m
American Airlines
Deal found 1/20$340
This United Airlines deal was found by Cheapflights users on 1/20. 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 3/79:14 am
DAY
-
STL
1 stop6h 29m
United Airlines
Sun 3/87:41 am
STL
-
DAY
1 stop4h 38m
United Airlines
Deal found 1/20$345
This United Airlines deal was found by Cheapflights users on 1/20. 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 6/119:00 am
DAY
-
STL
1 stop6h 18m
United Airlines
Sun 6/146:40 am
STL
-
DAY
1 stop5h 04m
United Airlines
Deal found 1/20$362
This United Airlines deal was found by Cheapflights users on 1/20. 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 1/249:05 am
DAY
-
STL
1 stop6h 23m
United Airlines
Wed 1/288:05 am
STL
-
DAY
1 stop4h 18m
United Airlines
Deal found 1/20$369
This American Airlines deal was found by Cheapflights users on 1/20. 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 3/75:47 am
DAY
-
STL
2 stops9h 03m
American Airlines
Sun 3/86:00 am
STL
-
DAY
1 stop5h 11m
American Airlines
Deal found 1/20$442
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Fri 7/311:39 am
DAY
-
STL
1 stop5h 47m
United Airlines
Sun 7/58:00 am
STL
-
DAY
1 stop3h 44m
United Airlines
Deal found 1/20$488
This United Airlines deal was found by Cheapflights users on 1/21. 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 3/58:34 am
DAY
-
STL
2 stops13h 33m
United Airlines
Thu 3/127:41 am
STL
-
DAY
1 stop4h 38m
United Airlines
Deal found 1/21$577
This American Airlines deal was found by Cheapflights users on 1/20. 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 2/611:13 am
DAY
-
STL
2 stops8h 01m
American Airlines
Sun 2/83:54 pm
STL
-
DAY
1 stop4h 14m
American Airlines
Deal found 1/20$604

Find flight deals from Dayton to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Dayton (DAY) 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 January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$259
(American Airlines)

Popular in

April

Cheapest in

July

Average price

$298
Provider with most accurate pricing for Dayton-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dayton-Lambert-St Louis flights.
Search Deals
From Dayton to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($145 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dayton 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 January 21, 2026.
Use the filters below to find and compare flights from Dayton to St. Louis that are best for you.

Fly from

Dayton

Fly to

St. Louis

Route

Depart

Return

Price

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Fri 2/6

7:10 pm-11:12 pm

1 stop5h 02m

Lambert-St Louis

Sun 2/8

3:37 pm-10:32 pm

1 stop5h 55m

$259

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Wed 2/4

6:00 am-11:41 am

1 stop6h 41m

Lambert-St Louis

Sun 2/8

3:54 pm-9:08 pm

1 stop4h 14m

$259

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Thu 3/5

6:44 pm-11:36 pm

1 stop5h 52m

Lambert-St Louis

Thu 3/12

6:00 am-1:49 pm

1 stop6h 49m

$318

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Wed 2/4

9:20 am-12:29 pm

1 stop4h 09m

Lambert-St Louis

Sun 2/8

8:05 am-1:23 pm

1 stop4h 18m

$319

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Sat 3/7

9:14 am-2:43 pm

1 stop6h 29m

Lambert-St Louis

Sun 3/8

7:41 am-1:19 pm

1 stop4h 38m

$345

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Thu 6/11

9:00 am-2:18 pm

1 stop6h 18m

Lambert-St Louis

Sun 6/14

6:40 am-12:44 pm

1 stop5h 04m

$362

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Sat 3/7

5:47 am-1:50 pm

2 stops9h 03m

Lambert-St Louis

Sun 3/8

6:00 am-12:11 pm

1 stop5h 11m

$442

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Fri 7/3

11:39 am-4:26 pm

1 stop5h 47m

Lambert-St Louis

Sun 7/5

8:00 am-12:44 pm

1 stop3h 44m

$488

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Thu 3/5

8:34 am-9:07 pm

2 stops13h 33m

Lambert-St Louis

Thu 3/12

7:41 am-1:19 pm

1 stop4h 38m

$577

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Compare providers for flights from Dayton 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 Dayton to St. Louis in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Dayton-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Dayton-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Dayton-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Dayton-St. Louis flights, Cheapflights users trust Expedia the most. Expedia 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 Dayton-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 Dayton to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Dayton 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 Dayton to St. Louis

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

Currently, October is the cheapest month in which you can book a flight from Dayton to St. Louis (average of $85). Flying from Dayton to St. Louis in November is currently the most expensive (average of $249). 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 Dayton 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 January 21, 2026.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Dayton to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,089 reviews

Food

7.2

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,089 reviews
Delta
7.9
Good
8,089 reviews

Food

7.2

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,191 reviews
Delta
7.9
Good
8,089 reviews

Food

7.2

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,174 reviews
Delta
7.9
Good
8,089 reviews

Food

7.2

Crew

8.5

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Dayton 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 Dayton to St. Louis?

    For as low as $319, American Airlines can have you in St. Louis from Dayton in 4h 09m. Dayton and St. Louis are separated by a distance of 338 mi. This flight may include one or multiple stops.

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

    According to our current data, Delta ($228), United Airlines ($228), and American Airlines ($233) offers the cheapest pricing from Dayton to St. Louis. These flights start at 35% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dayton 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 Dayton to St. Louis?

    Currently, October is the cheapest month in which you can book a flight from Dayton to St. Louis (average of $85). Flying from Dayton to St. Louis in November is currently the most expensive (average of $249). 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
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Dayton to St. Louis

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Top 3 airlines flying from Dayton to St. Louis

Discover the top 3 airlines that operate flights from Dayton 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$228Average$323FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$228Average$338FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$233Average$323FlexibilityNo cancel feeOn-time71%

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