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Cheap flights from Dayton to St. Louis from $219

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Dayton to St. Louis departing on 8/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Dayton to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
11:26 am - 4:17 pm
DAY
-
STL
5h 51m
1 stop
Delta Logo
11:00 am - 5:45 pm
STL
-
DAY
5h 45m
1 stop
$281Delta
Sat, Aug 22 - Tue, Aug 25
American Airlines Logo
7:09 pm - 12:27 am
DAY
-
STL
6h 18m
1 stop
American Airlines Logo
5:01 am - 11:49 am
STL
-
DAY
5h 48m
1 stop
$289American Airlines
Fri, Sep 25 - Mon, Sep 28
Delta Logo
6:00 am - 11:56 am
DAY
-
STL
6h 56m
1 stop
Delta Logo
7:00 am - 2:17 pm
STL
-
DAY
6h 17m
1 stop
$290Delta
Sat, Aug 22 - Thu, Aug 27
Delta Logo
6:30 pm - 11:58 pm
DAY
-
STL
6h 28m
1 stop
Delta Logo
11:00 am - 5:45 pm
STL
-
DAY
5h 45m
1 stop
$299Delta
Mon, Aug 17 - Thu, Aug 27
United Airlines Logo
7:15 am - 12:11 pm
DAY
-
STL
5h 56m
1 stop
United Airlines Logo
6:54 pm - 11:59 pm
STL
-
DAY
4h 05m
1 stop
$304United Airlines
Sun, Aug 9 - Sat, Aug 15
Delta Logo
6:30 pm - 11:58 pm
DAY
-
STL
6h 28m
1 stop
Delta Logo
3:44 pm - 10:21 pm
STL
-
DAY
5h 37m
1 stop
$314Delta
Mon, Aug 17 - Sat, Aug 22
United Airlines Logo
6:11 pm - 10:01 pm
DAY
-
STL
4h 50m
1 stop
United Airlines Logo
6:54 pm - 11:59 pm
STL
-
DAY
4h 05m
1 stop
$324United Airlines
Fri, Aug 21 - Mon, Aug 24
Delta Logo
6:30 pm - 11:58 pm
DAY
-
STL
6h 28m
1 stop
Delta Logo
11:00 am - 5:45 pm
STL
-
DAY
5h 45m
1 stop
$329Delta
Fri, Aug 7 - Tue, Aug 11
Delta Logo
6:30 pm - 11:58 pm
DAY
-
STL
6h 28m
1 stop
Delta Logo
6:20 am - 10:21 pm
STL
-
DAY
15h 01m
2 stops
$335Delta
Mon, Aug 17 - Sat, Aug 22
Delta Logo
6:30 pm - 10:23 am
DAY
-
STL
16h 53m
2 stops
Delta Logo
9:15 am - 2:17 pm
STL
-
DAY
4h 02m
1 stop
$348Delta
Mon, Aug 17 - Tue, Aug 25

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United Airlines flights from Dayton to St. Louis

Our best United Airlines deals on Dayton to St. Louis flight tickets
United Airlines
Aug 9
DAY7:15 amDayton
5h 56m
1 stop
STL12:11 pmLambert-St Louis
Aug 15
STL6:54 pmLambert-St Louis
4h 05m
1 stop
DAY11:59 pmDayton
$304
United Airlines
Aug 21
DAY6:11 pmDayton
4h 50m
1 stop
STL10:01 pmLambert-St Louis
Aug 24
STL6:54 pmLambert-St Louis
4h 05m
1 stop
DAY11:59 pmDayton
$324
United Airlines
Dec 12
DAY6:00 pmDayton
4h 13m
1 stop
STL9:13 pmLambert-St Louis
Dec 15
STL7:04 pmLambert-St Louis
3h 40m
1 stop
DAY11:44 pmDayton
$351

American Airlines flights from Dayton to St. Louis

Our best American Airlines deals on Dayton to St. Louis flight tickets
American Airlines
Sep 25
DAY7:09 pmDayton
6h 18m
1 stop
STL12:27 amLambert-St Louis
Sep 28
STL5:01 amLambert-St Louis
5h 48m
1 stop
DAY11:49 amDayton
$289
American Airlines
Aug 10
DAY6:03 amDayton
4h 29m
1 stop
STL9:32 amLambert-St Louis
Aug 12
STL5:42 amLambert-St Louis
6h 32m
1 stop
DAY1:14 pmDayton
$609
American Airlines
Jul 26
DAY12:29 pmDayton
5h 44m
1 stop
STL5:13 pmLambert-St Louis
Jul 27
STL5:13 pmLambert-St Louis
5h 31m
1 stop
DAY11:44 pmDayton
$857

momondo 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, momondo users made 832,500 searches. Data last updated July 25, 2026.
Use the filters below to find and compare flights from Dayton to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Sat 8/22

11:26 am-4:17 pm

1 stop5h 51m

Lambert-St Louis

Tue 8/25

11:00 am-5:45 pm

1 stop5h 45m

$281

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Fri 9/25

7:09 pm-12:27 am

1 stop6h 18m

Lambert-St Louis

Mon 9/28

5:01 am-11:49 am

1 stop5h 48m

$289

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Sat 8/22

6:00 am-11:56 am

1 stop6h 56m

Lambert-St Louis

Thu 8/27

7:00 am-2:17 pm

1 stop6h 17m

$290

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Mon 8/17

6:30 pm-11:58 pm

1 stop6h 28m

Lambert-St Louis

Thu 8/27

11:00 am-5:45 pm

1 stop5h 45m

$299

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Sun 8/9

7:15 am-12:11 pm

1 stop5h 56m

Lambert-St Louis

Sat 8/15

6:54 pm-11:59 pm

1 stop4h 05m

$304

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Mon 8/17

6:30 pm-11:58 pm

1 stop6h 28m

Lambert-St Louis

Sat 8/22

3:44 pm-10:21 pm

1 stop5h 37m

$314
Quickest round-trip

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Fri 8/21

6:11 pm-10:01 pm

1 stop4h 50m

Lambert-St Louis

Mon 8/24

6:54 pm-11:59 pm

1 stop4h 05m

$324

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Fri 8/7

6:30 pm-11:58 pm

1 stop6h 28m

Lambert-St Louis

Tue 8/11

11:00 am-5:45 pm

1 stop5h 45m

$329

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Mon 8/17

6:30 pm-11:58 pm

1 stop6h 28m

Lambert-St Louis

Sat 8/22

6:20 am-10:21 pm

2 stops15h 01m

$335

DaytonSt. Louis

DAY - STL

DAYSTL

Dayton

Mon 8/17

6:30 pm-10:23 am

2 stops16h 53m

Lambert-St Louis

Tue 8/25

9:15 am-2:17 pm

1 stop4h 02m

$348

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Dayton to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, July is the cheapest month to fly from Dayton to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of November is another great option to travel to St. Louis, with average flight prices from Dayton averaging around $258.

When to book flights from Dayton to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Dayton to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Dayton to St. Louis (DAY to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Dayton to St. Louis

Fastest flight time

3h 57m

Direct flights

None
The fastest flight from Dayton to St. Louis takes 3h 57m
There are no direct flights from Dayton to St. Louis. There are no popular flight routes from Dayton to St. Louis.
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Frequently asked questions about flying from Dayton to St. Louis

  • How far is Dayton to Lambert-St Louis by plane?

    A flight from Dayton to Lambert-St Louis will travel around 330.7 mi. In terms of flight time, this usually takes a little over 3h 57m.

  • When did momondo last update prices for flights from Dayton Airport to Lambert-St Louis Airport?

    Prices for flights from Dayton Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Dayton Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Dayton Airport to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Dayton Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Dayton to St. Louis?

Best airlines flying from Dayton to St. Louis

Compare and see reviews for airlines that fly from Dayton to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $228Free CancellationRating
7.4
10,034 reviews
Search United Airlines flights
American AirlinesPriceFrom $238Free CancellationRating
7.1
11,847 reviews
Search American Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
Collinsville
St. Peters
Florissant
Maryland Heights
O'Fallon
Alton
Farmington
Clayton
Wentzville
Fenton
Festus
Eureka
Edwardsville
Litchfield
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Dayton to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Dayton to St. Louis for you.

Can I find flights from Dayton to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis from Dayton with this policy.

How can momondo help me find flights from Dayton to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Dayton. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Dayton to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Dayton. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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