HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
USA

$53+ Cheap flights from St. Louis (STL) to the United States

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to USA with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to USA

Keep the following information in mind while searching for St. Louis to USA flight deals. Data was last updated junio 12, 2025.

Round-trip from

$134
(Cheapflightsfares)

One-way from

$53
(FlightHub)

Popular in

November

Cheapest in

April

Average price

$294

Good round-trip deal

$78 or less

Good one-way deal

$89 or less
From Lambert-St Louis to USA
Search Deals
One-way flight from Lambert-St Louis to USA
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to USA.
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to USA.
Search Deals

Find flight deals from St. Louis to USA

Cheapest flights from St. Louis to USA
Explore the most affordable flight options available from St. Louis to USA. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/3011:28 amSTL - MCO
1 stop7h 56mSpirit Airlines
mié. 7/239:00 amMCO - STL
Nonstop2h 29mSpirit Airlines
Deal found 6/10$134
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/911:24 amSTL - MCO
Nonstop2h 27mMultiple Airlines
mar. 7/2210:14 pmMCO - STL
Nonstop2h 33mMultiple Airlines
Deal found 6/12$137
This Priceline deal was found by Cheapflights users on 6/12. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/97:29 pmSTL - DEN
Nonstop2h 29mFrontier
mié. 7/166:00 amDEN - STL
Nonstop2h 11mFrontier
Deal found 6/12$139
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/55:40 pmSTL - MCO
Nonstop2h 43mFrontier
mar. 7/1510:14 pmMCO - STL
Nonstop2h 33mFrontier
Deal found 6/9$145
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/46:45 pmSTL - DEN
Nonstop2h 20mSouthwest
jue. 8/145:30 amDEN - STL
Nonstop2h 00mSouthwest
Deal found 6/10$157
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/2210:08 amSTL - DFW
Nonstop1h 49mAmerican Airlines
mié. 9/31:27 pmDFW - STL
Nonstop1h 42mAmerican Airlines
Deal found 6/12$159
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/228:44 amSTL - LAS
1 stop13h 22mSpirit Airlines
jue. 9/2510:55 pmLAS - STL
1 stop6h 54mSpirit Airlines
Deal found 6/12$163
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/58:44 amSTL - DFW
1 stop11h 48mMultiple Airlines
dom. 9/78:55 amDFW - STL
Nonstop1h 52mMultiple Airlines
Deal found 6/12$165
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/128:44 pmSTL - DFW
Nonstop1h 58mFrontier
jue. 6/195:30 pmDFW - STL
Nonstop1h 54mFrontier
Deal found 6/11$166
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/105:52 pmSTL - LAS
1 stop7h 44mFrontier
sáb. 10/1112:59 amLAS - STL
1 stop6h 08mFrontier
Deal found 6/9$171
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/188:44 amSTL - DFW
1 stop11h 48mSpirit Airlines
dom. 9/212:19 pmDFW - STL
1 stop17h 30mSpirit Airlines
Deal found 6/10$175
This American Airlines deal was found by Cheapflights users on 6/10. 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.
mar. 8/1212:20 pmSTL - DEN
1 stop6h 43mAmerican Airlines
sáb. 8/1611:59 pmDEN - STL
1 stop7h 07mAmerican Airlines
Deal found 6/10$182

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to USA 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 junio 12, 2025.
Use the filters below to find and compare flights from St. Louis to the United States that are best for you.

Fly from

St. Louis

Fly to

USA

Route

Depart

Return

Price

St. LouisOrlando

STL - MCO

STLMCO

Lambert-St Louis

lun. 6/30

11:28 am-8:24 pm

1 stop7h 56m

Orlando

mié. 7/23

9:00 am-10:29 am

Nonstop2h 29m

$134

St. LouisOrlando

STL - MCO

STLMCO

Lambert-St Louis

mié. 7/9

11:24 am-2:51 pm

Nonstop2h 27m

Orlando

mar. 7/22

10:14 pm-11:47 pm

Nonstop2h 33m

$137

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

mié. 7/9

7:29 pm-8:58 pm

Nonstop2h 29m

Denver Intl

mié. 7/16

6:00 am-9:11 am

Nonstop2h 11m

$139

St. LouisOrlando

STL - MCO

STLMCO

Lambert-St Louis

sáb. 7/5

5:40 pm-9:23 pm

Nonstop2h 43m

Orlando

mar. 7/15

10:14 pm-11:47 pm

Nonstop2h 33m

$145

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

lun. 8/4

6:45 pm-8:05 pm

Nonstop2h 20m

Denver Intl

jue. 8/14

5:30 am-8:30 am

Nonstop2h 00m

$157

St. LouisDallas

STL - DFW

STLDFW

Lambert-St Louis

vie. 8/22

10:08 am-11:57 am

Nonstop1h 49m

Dallas/Fort Worth

mié. 9/3

1:27 pm-3:09 pm

Nonstop1h 42m

$159

St. LouisDallas

STL - DFW

STLDFW

Lambert-St Louis

vie. 9/5

8:44 am-8:32 pm

1 stop11h 48m

Dallas/Fort Worth

dom. 9/7

8:55 am-10:47 am

Nonstop1h 52m

$165

St. LouisDallas

STL - DFW

STLDFW

Lambert-St Louis

dom. 6/29

8:44 pm-10:42 pm

Nonstop1h 58m

Dallas/Fort Worth

jue. 7/3

5:30 pm-7:24 pm

Nonstop1h 54m

$172

St. LouisDallas

STL - DFW

STLDFW

Lambert-St Louis

jue. 9/18

8:44 am-8:32 pm

1 stop11h 48m

Dallas/Fort Worth

dom. 9/21

2:19 pm-7:49 am

1 stop17h 30m

$175

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

mié. 7/23

11:24 am-11:37 pm

1 stop14h 13m

Las Vegas Harry Reid Intl

sáb. 7/26

12:20 am-9:52 am

1 stop7h 32m

$178

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from St. Louis to USA

Have a flexible travel schedule? Discover the best time to fly to USA 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 the United States

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to USA (average of $246). Flying from St. Louis to USA in March is currently the most expensive (average of $327). 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 US?

Find hourly flight availability from St. Louis to USA. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

When flying from St. Louis to USA, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from St. Louis to USA

Explore weekly flight availability from St. Louis to USA. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated junio 12, 2025.

The most flights from STL to US0 are scheduled on a Monday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 on average).

Rainfall in USA by month

Plan your trip to USA by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in USA ranges from 2.8 - 4.5 inches per month. July is typically the wettest month, when rainfall can reach 4.5 in. February is typically the driest time to visit USA when rainfall is around 2.8 in.

Temperature in USA by month

Plan your trip to USA by taking into account the average temperature totals by month.

If weather is an important factor for your trip to USA, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing USA

Get insights into the airlines that provide service to USA. 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 USA. Reviews last updated junio 12, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from St. Louis to USA. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Food

7.1

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to USA. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to United States?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to United States. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

  • How popular is this St. Louis to USA flight route?

    Flights from Lambert-St Louis to United States have been viewed 9 times in the past calendar month.

  • What are the cheapest airlines to fly from St. Louis to USA one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $53. Frontier flights start at $71 while deals on American Airlines start at $87 one-way.

  • What are the most popular routes from St. Louis to USA?

    The most popular flight routes from St. Louis to USA are Lambert-St Louis - Seattle/Tacoma Intl, Lambert-St Louis - New York LaGuardia and Lambert-St Louis - Las Vegas Harry Reid Intl.

  • What are the most reliable airlines from St. Louis to USA?

    Before booking your flight to USA from St. Louis, check out the most reliable airlines to get you to your destination on time: Japan Airlines (84%), Air Tahiti Nui (84%), Malaysia Airlines( 84%).

  • What are the cheapest flights from St. Louis to USA?

    Looking for the cheapest flight from St. Louis to USA? While on average our users pay $1,795, our data indicates the cheapest price to be $160. The most popular route (Lambert-St Louis - Seattle/Tacoma Intl), is priced around $179.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from St. Louis to USA (average of $246). Flying from St. Louis to USA in March is currently the most expensive (average of $327). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to USA

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Seattle flights
Kansas City to Seattle flights
St. Louis to Las Vegas flights
St. Louis to LaGuardia flights
Kansas City to Las Vegas flights
Kansas City to John F Kennedy Intl flights
St. Louis to Denver flights
St. Louis to Newark flights
Kansas City to LaGuardia flights
Kansas City to Newark flights
St. Louis to Miami flights
Kansas City to O'Hare Intl flights
St. Louis to John F Kennedy Intl flights
St. Louis to Boston flights
Kansas City to Boston flights
Kansas City to Denver flights
Kansas City to Miami flights
St. Louis to Orlando flights
St. Louis to Dallas/Fort Worth flights
Kansas City to Hobby flights
Kansas City to Dallas/Fort Worth flights
St. Louis to O'Hare Intl flights
Kansas City to Orlando flights
St. Louis to Los Angeles flights
Kansas City to Los Angeles flights
St. Louis to Hobby flights
Kansas City to Cancún flights
St. Louis to Minneapolis flights
Kansas City to Fort Lauderdale flights
St. Louis to Cancún flights
Kansas City to San Francisco flights
Kansas City to Dulles Intl flights
St. Louis to San Francisco flights
Kansas City to Sky Harbor Intl flights
Kansas City to George Bush Intcntl flights
Kansas City to Tampa flights
Kansas City to Atlanta flights
St. Louis to Dulles Intl flights
St. Louis to George Bush Intcntl flights
St. Louis to Atlanta flights
Kansas City to Portland flights
Springfield to Reno flights
Kansas City to Honolulu flights
St. Louis to Sky Harbor Intl flights
St. Louis to Honolulu flights
Kansas City to Baltimore flights
Kansas City to Minneapolis flights
Kansas City to San Diego flights
Kansas City to Midway flights
St. Louis to Fort Lauderdale flights

Top 10 airlines flying from St. Louis to USA

Discover the top 10 airlines that operate flights from St. Louis to USA. 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$45Average$188FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$56Average$233FlexibilityNo cancel feeOn-time65%
DeltaCheapest$94Average$336FlexibilityNo cancel feeOn-timeN/A
Allegiant AirCheapest$104Average$238FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$152Average$399FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$187Average$407FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$192Average$384FlexibilityNo cancel feeOn-time71%
Southern / MokuleleCheapest$193Average$226FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$236Average$469FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$241Average$415FlexibilityNo cancel feeOn-time85%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.