Cheap flights from St. Louis from $54

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 8/3. 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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1 adult, Economy, 0 bags

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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 June 13, 2026. In the last 7 days, momondo users made a total of 832,500 searches

Fly to

Route

Depart

Return

Price

Cheapest one-way

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 8/3

7:10 pm-8:43 pm

Nonstop3h 33m

$54

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 8/11

7:03 pm-8:36 pm

Nonstop3h 33m

$55

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 7/10

6:30 pm-10:05 pm

1 stop5h 35m

$95

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 8/7

8:50 pm-10:15 pm

Nonstop3h 25m

$100
Quickest one-way

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Tue 8/11

8:40 am-11:57 am

Nonstop2h 17m

$101

St. LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Wed 9/9

5:00 am-8:46 am

Nonstop2h 46m

$103

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Tue 8/4

10:20 am-4:30 pm

1 stop5h 10m

$111

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Wed 12/2

2:15 pm-6:30 pm

1 stop6h 15m

$135

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Sat 9/19

7:27 am-2:51 pm

1 stop9h 24m

$140

St. LouisNew York

STL - JFK

STLJFK

Lambert-St Louis

Tue 7/14

1:22 pm-7:48 pm

1 stop5h 26m

$157

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Find the cheapest flights from St. Louis

Cheap one-way flights from St. Louis

Enter your travel dates to find the best prices.
Frontier Logo
7:10 pm - 8:43 pm
STL
-
LAS
3h 33mnonstop
$54Frontier
Mon, Aug 3
Frontier Logo
7:03 pm - 8:36 pm
STL
-
LAS
3h 33mnonstop
$55Frontier
Tue, Aug 11
Southwest Logo
6:30 pm - 10:05 pm
STL
-
LAS
5h 35m
1 stop
$95Southwest
Fri, Jul 10
Southwest Logo
8:50 pm - 10:15 pm
STL
-
LAS
3h 25mnonstop
$100Southwest
Fri, Aug 7
United Airlines Logo
8:40 am - 11:57 am
STL
-
IAD
2h 17mnonstop
$101United Airlines
Tue, Aug 11
American Airlines Logo
5:00 am - 8:46 am
STL
-
MIA
2h 46mnonstop
$103American Airlines
Wed, Sep 9
United Airlines Logo
10:20 am - 4:30 pm
STL
-
IAD
5h 10m
1 stop
$111United Airlines
Tue, Aug 4
Delta Logo
2:15 pm - 6:30 pm
STL
-
SEA
6h 15m
1 stop
$135Delta
Wed, Dec 2
American Airlines Logo
7:27 am - 2:51 pm
STL
-
SEA
9h 24m
1 stop
$140American Airlines
Sat, Sep 19
Delta Logo
1:22 pm - 7:48 pm
STL
-
JFK
5h 26m
1 stop
$157Delta
Tue, Jul 14

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?

From Lambert-St Louis, you can take domestic flights to many cities. Searches reveal that momondo users prefer flights to Savannah, San Antonio, Fort Lauderdale, Tampa, and Chicago the most.

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

The cheapest city to fly to from St. Louis currently is Atlanta at $55. The next cheapest destinations are Jonesboro, Denver, Orlando, Chicago and Las Vegas.

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 American Airlines, Delta, and Southern / Mokulele. For example, American Airlines flights from St. Louis to Atlanta, start at $56, Delta flights from St. Louis to Denver cost around $56, and Southern / Mokulele flights from St. Louis to Quincy, Illinois are around $70.

What is the cheapest flight available from St. Louis?

Currently, the cheapest flight from St. Louis found by our users is for $55 to Atlanta. Prices will vary according to several factors such as the departure date and time, but on average you can expect to pay around $954 to travel from St. Louis to Atlanta.

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 72, 67 and 33 flights per day on average, respectively.

Which airlines can you fly with from St. Louis?

Airlines including American Airlines, Lufthansa and Delta 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 Salt Lake City, for which the starting price of a first class seat can be as low as $228.

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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