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$229+ Cheap flights from St. Louis to Dayton (STL - DAY)

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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DAY
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from St. Louis to Dayton

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Dayton (DAY). 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 September 11, 2025.

Round-trip from

$229
(Delta)

Popular in

March

Cheapest in

April

Average price

$311
From Lambert-St Louis to Dayton
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from St. Louis to Dayton

Cheapest flights from St. Louis to Dayton
Explore the most affordable flight options available from St. Louis to Dayton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Delta deal was found by Cheapflights users on 9/10. 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 10/87:05 amSTL - DAY
1 stop6h 27mDelta
Wed 10/156:05 amDAY - STL
1 stop5h 21mDelta
Deal found 9/10$229
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/2511:10 amSTL - DAY
1 stop5h 02mUnited Airlines
Mon 9/297:21 amDAY - STL
1 stop6h 07mUnited Airlines
Deal found 9/10$239
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/33:23 pmSTL - DAY
1 stop3h 46mUnited Airlines
Sun 10/511:42 amDAY - STL
1 stop5h 02mUnited Airlines
Deal found 9/9$249
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/125:11 amSTL - DAY
1 stop5h 38mAmerican Airlines
Sat 10/1812:19 pmDAY - STL
1 stop4h 45mAmerican Airlines
Deal found 9/10$259
This Delta deal was found by Cheapflights users on 9/10. 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.
Sat 9/137:10 amSTL - DAY
1 stop4h 19mDelta
Thu 9/1811:15 amDAY - STL
1 stop5h 50mDelta
Deal found 9/10$279
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sun 11/1611:05 amSTL - DAY
1 stop5h 01mUnited Airlines
Sat 11/299:15 amDAY - STL
1 stop6h 10mUnited Airlines
Deal found 9/10$289
This American Airlines deal was found by Cheapflights users on 9/10. 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 9/246:10 amSTL - DAY
1 stop4h 18mAmerican Airlines
Sun 9/287:00 amDAY - STL
1 stop6h 23mAmerican Airlines
Deal found 9/10$299
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/266:30 amSTL - DAY
1 stop3h 37mUnited Airlines
Mon 9/299:00 amDAY - STL
1 stop6h 27mUnited Airlines
Deal found 9/9$328
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/97:16 amSTL - DAY
1 stop3h 39mAmerican Airlines
Thu 10/1612:19 pmDAY - STL
1 stop4h 45mAmerican Airlines
Deal found 9/10$343
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/85:00 amSTL - DAY
2 stops12h 59mUnited Airlines
Wed 10/159:00 amDAY - STL
1 stop6h 27mUnited Airlines
Deal found 9/10$391
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/910:57 amSTL - DAY
2 stops21h 33mMultiple Airlines
Thu 10/169:00 pmDAY - STL
1 stop21h 10mMultiple Airlines
Deal found 9/10$394

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Dayton 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 September 11, 2025.
Use the filters below to find and compare flights from St. Louis to Dayton that are best for you.

Fly from

St. Louis

Fly to

Dayton

Route

Depart

Return

Price

St. LouisDayton

STL - DAY

STLDAY

Lambert-St Louis

Wed 10/8

3:59 pm-10:44 pm

1 stop5h 45m

Dayton

Wed 10/15

11:09 am-2:43 pm

1 stop4h 34m

$229

St. LouisDayton

STL - DAY

STLDAY

Lambert-St Louis

Thu 9/25

11:10 am-5:12 pm

1 stop5h 02m

Dayton

Mon 9/29

7:21 am-12:28 pm

1 stop6h 07m

$239

St. LouisDayton

STL - DAY

STLDAY

Lambert-St Louis

Fri 10/3

3:23 pm-8:09 pm

1 stop3h 46m

Dayton

Sun 10/5

11:42 am-3:44 pm

1 stop5h 02m

$249

St. LouisDayton

STL - DAY

STLDAY

Lambert-St Louis

Sun 10/12

5:30 am-1:25 pm

1 stop6h 55m

Dayton

Sat 10/18

1:55 pm-7:30 pm

1 stop6h 35m

$278

St. LouisDayton

STL - DAY

STLDAY

Lambert-St Louis

Sun 11/16

11:05 am-5:06 pm

1 stop5h 01m

Dayton

Sat 11/29

9:15 am-2:25 pm

1 stop6h 10m

$289

St. LouisDayton

STL - DAY

STLDAY

Lambert-St Louis

Wed 9/24

6:10 am-11:28 am

1 stop4h 18m

Dayton

Sun 9/28

7:00 am-12:23 pm

1 stop6h 23m

$299

St. LouisDayton

STL - DAY

STLDAY

Lambert-St Louis

Thu 10/9

6:00 am-12:44 pm

1 stop5h 44m

Dayton

Thu 10/16

6:44 pm-11:41 pm

1 stop5h 57m

$328

St. LouisDayton

STL - DAY

STLDAY

Lambert-St Louis

Fri 9/26

6:30 am-11:07 am

1 stop3h 37m

Dayton

Mon 9/29

9:00 am-2:27 pm

1 stop6h 27m

$328

St. LouisDayton

STL - DAY

STLDAY

Lambert-St Louis

Thu 10/9

7:16 am-11:55 am

1 stop3h 39m

Dayton

Thu 10/16

12:19 pm-4:04 pm

1 stop4h 45m

$343

St. LouisDayton

STL - DAY

STLDAY

Lambert-St Louis

Wed 10/8

5:00 am-6:59 pm

2 stops12h 59m

Dayton

Wed 10/15

9:00 am-2:27 pm

1 stop6h 27m

$391

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 11 results
1
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Best time to book a flight from St. Louis to Dayton

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

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

Currently, August is the cheapest month in which you can book a flight from St. Louis to Dayton (average of $325). Flying from St. Louis to Dayton in March is currently the most expensive (average of $396). 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 STL to DAY?

Find hourly flight availability from St. Louis to Dayton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

A simple way to save on the total cost of your ticket is to fly from St. Louis to Dayton in the morning. If you’re flexible enough to do this you can expect to save up to 23% on your trip compared to booking a flight at noon.

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

Reviews of airlines servicing Dayton

Get insights into the airlines that provide service to Dayton. 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 Dayton. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from St. Louis to Dayton, 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
8,937 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,937 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

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

    Delta, United Airlines, and American Airlines can get you from St. Louis to Dayton in just under 5h 02m. Your travel time can differ by up to 1h 53m. There are 338 mi between St. Louis and Dayton. This flight may include one or multiple stops.

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

    According to our current data, United Airlines ($228), and American Airlines ($228) offers the cheapest pricing from St. Louis to Dayton. You may be able to fly from St. Louis to Dayton for 33% less than the average price by searching for these airlines.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Dayton (average of $325). Flying from St. Louis to Dayton in March is currently the most expensive (average of $396). 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 Dayton?

Book flights to Dayton if you plan to visit one of these locations
Troy
Springfield
Xenia
Miamisburg
Richmond

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Top 2 airlines flying from St. Louis to Dayton

Discover the top 2 airlines that operate flights from St. Louis to Dayton. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$322FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$228Average$319FlexibilityNo cancel feeOn-time71%

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