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St. Louis

$184+ Cheap flights from Dayton to St. Louis (DAY - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
DAY — STL
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap 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 August 14, 2025.

Round-trip from

$219
(Delta)

One-way from

$184
(American Airlines)

Popular in

April

Cheapest in

July

Average price

$298
From Dayton to Lambert-St Louis
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One-way flight from Dayton to Lambert-St Louis
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Highest demand for flights based on searches. 26% potential increase in price ($134 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 August 14, 2025.

This Delta deal was found by Cheapflights users on 8/12. 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.
Wed 8/274:30 pmDAY - STL
1 stop6h 32mDelta
Sun 8/315:11 pmSTL - DAY
1 stop5h 45mDelta
Deal found 8/12$219
This Delta deal was found by Cheapflights users on 8/11. 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.
Fri 9/54:30 pmDAY - STL
1 stop6h 32mDelta
Wed 9/105:11 pmSTL - DAY
1 stop5h 12mDelta
Deal found 8/11$229
This United Airlines deal was found by Cheapflights users on 8/13. 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 8/2811:42 amDAY - STL
1 stop5h 02mUnited Airlines
Mon 9/16:35 amSTL - DAY
1 stop5h 39mUnited Airlines
Deal found 8/13$239
This American Airlines deal was found by Cheapflights users on 8/13. 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 8/226:00 amDAY - STL
1 stop7h 35mAmerican Airlines
Sun 8/246:00 amSTL - DAY
1 stop5h 02mAmerican Airlines
Deal found 8/13$269
This Delta deal was found by Cheapflights users on 8/11. 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.
Wed 9/311:11 amDAY - STL
1 stop4h 26mDelta
Tue 9/95:11 pmSTL - DAY
1 stop21h 19mDelta
Deal found 8/11$286
This American Airlines deal was found by Cheapflights users on 8/11. 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 9/25:20 pmDAY - STL
1 stop5h 57mAmerican Airlines
Sun 9/145:18 amSTL - DAY
1 stop5h 54mAmerican Airlines
Deal found 8/11$289
This Delta deal was found by Cheapflights users on 8/12. 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.
Mon 9/156:37 pmDAY - STL
1 stop5h 47mDelta
Wed 9/179:19 amSTL - DAY
1 stop5h 32mDelta
Deal found 8/12$297
This United Airlines deal was found by Cheapflights users on 8/11. 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 8/272:00 pmDAY - STL
1 stop4h 52mUnited Airlines
Sun 8/316:35 amSTL - DAY
1 stop3h 32mUnited Airlines
Deal found 8/11$299
This Delta deal was found by Cheapflights users on 8/12. 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.
Tue 9/166:37 pmDAY - STL
1 stop4h 23mDelta
Thu 9/187:10 amSTL - DAY
1 stop4h 19mDelta
Deal found 8/12$332
This American Airlines deal was found by Cheapflights users on 8/11. 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.
Mon 9/85:01 pmDAY - STL
1 stop4h 24mAmerican Airlines
Tue 9/93:59 pmSTL - DAY
1 stop6h 38mAmerican Airlines
Deal found 8/11$357
This American Airlines deal was found by Cheapflights users on 8/11. 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.
Mon 9/85:01 pmDAY - STL
1 stop4h 24mAmerican Airlines
Fri 9/124:55 pmSTL - DAY
1 stop5h 07mAmerican Airlines
Deal found 8/11$368
This American Airlines deal was found by Cheapflights users on 8/11. 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.
Sun 9/77:00 amDAY - STL
1 stop6h 23mAmerican Airlines
Sat 9/135:18 amSTL - DAY
1 stop5h 54mAmerican Airlines
Deal found 8/11$372

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 August 14, 2025.
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

Wed 8/27

4:30 pm-10:02 pm

1 stop6h 32m

Lambert-St Louis

Sun 8/31

5:11 pm-11:56 pm

1 stop5h 45m

$219

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Wed 10/1

9:26 am-1:09 pm

1 stop4h 43m

Lambert-St Louis

Sun 10/5

4:58 pm-11:02 pm

1 stop5h 04m

$229

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Fri 9/5

4:30 pm-10:02 pm

1 stop6h 32m

Lambert-St Louis

Sat 9/13

7:10 am-12:29 pm

1 stop4h 19m

$229

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Fri 9/19

5:16 pm-11:07 pm

1 stop6h 51m

Lambert-St Louis

Mon 9/22

4:55 pm-11:02 pm

1 stop5h 07m

$229

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Sat 9/6

4:30 pm-10:02 pm

1 stop6h 32m

Lambert-St Louis

Mon 9/15

3:36 pm-11:07 pm

1 stop6h 31m

$229

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Wed 9/3

11:11 am-4:06 pm

1 stop5h 55m

Lambert-St Louis

Fri 9/12

6:01 am-12:26 pm

1 stop5h 25m

$229

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Fri 9/5

4:30 pm-10:02 pm

1 stop6h 32m

Lambert-St Louis

Mon 9/15

3:36 pm-11:07 pm

1 stop6h 31m

$229

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Thu 9/4

6:00 am-9:15 am

1 stop4h 15m

Lambert-St Louis

Mon 9/15

6:01 am-12:29 pm

1 stop5h 28m

$229

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Fri 9/19

6:37 pm-11:24 pm

1 stop5h 47m

Lambert-St Louis

Mon 9/22

5:11 pm-11:07 pm

1 stop4h 56m

$229

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Wed 9/3

11:11 am-2:37 pm

1 stop4h 26m

Lambert-St Louis

Sat 9/13

6:01 am-12:29 pm

1 stop5h 28m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 18 results
1
2

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, August is the cheapest month in which you can book a flight from Dayton to St. Louis (average of $311). Flying from Dayton to St. Louis in March is currently the most expensive (average of $356). 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.

What is the cheapest time of day to fly from DAY to STL?

Find hourly flight availability from Dayton to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

A simple way to save on the total cost of your ticket is to fly from Dayton to St. Louis in the morning. If you’re flexible enough to do this you can expect to save up to 41% on your trip compared to booking a flight at noon.

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 August 14, 2025.
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
8.0
Very good
7,980 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    According to our current data, United Airlines ($222), American Airlines ($228), and Delta ($228) offers the cheapest pricing from Dayton to St. Louis. These flights start at 39% 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, August is the cheapest month in which you can book a flight from Dayton to St. Louis (average of $311). Flying from Dayton to St. Louis in March is currently the most expensive (average of $356). 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
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Farmington
Festus

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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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$222Average$373FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$228Average$340FlexibilityNo cancel feeOn-time71%
DeltaCheapest$228Average$323FlexibilityNo cancel feeOn-timeN/A

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