Cheap flights from St. Louis from $29

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis departing on 1/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Find flights from St. Louis within your budget

 
Find flights departing from St. Louis that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on December 20, 2025. In the last 7 days, momondo users made a total of 832,500 searches

Fly to

Route

Depart

Return

Price

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Sat 1/17

3:43 pm-5:20 pm

Nonstop2h 37m

$29

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Mon 1/12

7:43 pm-9:15 pm

Nonstop2h 32m

$39

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Mon 1/19

7:36 pm-9:08 pm

Nonstop2h 32m

$40

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Fri 1/16

7:27 pm-8:59 pm

Nonstop2h 32m

$43

St. LouisOrlando

STL - MCO

STLMCO

Lambert-St Louis

Sun 1/18

12:05 pm-6:40 pm

1 stop5h 35m

$79

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Mon 1/26

3:37 pm-11:51 pm

1 stop10h 14m

$79

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Mon 3/16

5:29 pm-11:53 pm

1 stop8h 24m

$89

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Tue 2/17

5:35 pm-9:01 pm

Nonstop2h 26m

$121

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Sat 1/10

5:45 pm-9:05 pm

Nonstop2h 20m

$126

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Tue 3/17

8:30 am-2:18 pm

1 stop4h 48m

$131

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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Cheap one-way flights from St. Louis

Enter your travel dates to find the best prices.
Frontier Logo
3:43 pm - 5:20 pm
STL
-
DEN
2h 37mnonstop
$29Frontier
Sat, Jan 17
Frontier Logo
7:43 pm - 9:15 pm
STL
-
DEN
2h 32mnonstop
$39Frontier
Mon, Jan 12
Frontier Logo
7:36 pm - 9:08 pm
STL
-
DEN
2h 32mnonstop
$40Frontier
Mon, Jan 19
Frontier Logo
7:27 pm - 8:59 pm
STL
-
DEN
2h 32mnonstop
$43Frontier
Fri, Jan 16
Southwest Logo
12:05 pm - 6:40 pm
STL
-
MCO
5h 35m1 stop
$79Southwest
Sun, Jan 18
American Airlines Logo
3:37 pm - 11:51 pm
STL
-
SEA
10h 14m1 stop
$79American Airlines
Mon, Jan 26
Delta Logo
5:29 pm - 11:53 pm
STL
-
SEA
8h 24m1 stop
$89Delta
Mon, Mar 16
Delta Logo
5:35 pm - 9:01 pm
STL
-
LGA
2h 26mnonstop
$121Delta
Tue, Feb 17
Southwest Logo
5:45 pm - 9:05 pm
STL
-
LGA
2h 20mnonstop
$126Southwest
Sat, Jan 10
United Airlines Logo
8:30 am - 2:18 pm
STL
-
LGA
4h 48m1 stop
$131United Airlines
Tue, Mar 17

Flights from St. Louis - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to help you craft the best travel plan.

What are the most popular domestic flights out of Lambert-St Louis?

According to searches, the most popular destinations for domestic flights from Lambert-St Louis among momondo users are Chicago, Fort Lauderdale, Los Angeles, San Antonio and Tampa.

What are the cheapest cities to fly to from St. Louis?

The cheapest city to fly to from St. Louis currently is Orlando at $38. The next cheapest destinations are Tampa, Fort Lauderdale, Las Vegas, Denver and Atlanta.

Frequently asked questions regarding flights from St. Louis

Which airlines are currently offering the cheapest flights from St. Louis?

Our data suggests that currently, the cheapest flights from St. Louis are being offered by Delta, Southern / Mokulele, and American Airlines. For example, Delta flights from St. Louis to Detroit Metropolitan Wayne County Airport, start at $41, Southern / Mokulele flights from St. Louis to Burlington, Iowa cost around $49, and American Airlines flights from St. Louis to Denver are around $50.

What is the cheapest flight available from St. Louis?

Currently, the cheapest flight from St. Louis found by our users is for $38 to Orlando Airport. Prices will vary according to several factors such as the departure date and time, but on average you can expect to pay around $203 to travel from St. Louis to Orlando Airport.

Which destinations have the most frequent flights from St. Louis?

Chicago, Chicago O'Hare Intl Airport and Dallas/Fort Worth Airport are currently the destinations served most frequently from St. Louis, with 41, 40 and 19 flights per day on average, respectively.

Which airlines can you fly with from St. Louis?

Airlines including American Airlines, Delta and Lufthansa frequently fly from St. Louis. You can view other airlines by performing a quick search in the form above.

What is the cheapest first class flight from St. Louis?

If you are looking for a cheap first class flight, consider flights to Denver, for which the starting price of a first class seat can be as low as $537.

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

Prices for flights from Lambert-St Louis Airport were last updated today.

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

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport.

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

The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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