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$43+ 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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
mar. 10 — mar. 171
lun. 3/10
lun. 3/17
1 adult, Economy
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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 marzo 5, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$58
(Frontier)

One-way from

$43
(Kiwi.com)

Popular in

November

Cheapest in

September

Average price

$308

Good round-trip deal

$62 or less

Good one-way deal

$73 or less
Provider with most accurate pricing for Lambert-St Louis-New York (NYC) flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-New York (NYC) flights.
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From Lambert-St Louis to USA
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One-way flight from Lambert-St Louis to USA
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Highest demand for flights based on searches. 9% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Lambert-St Louis to USA.
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Price to beat on a one-way flight from Lambert-St Louis to USA.
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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 marzo 5, 2025.

This CheapOair deal was found by Cheapflights users on 3/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/26:51 pmSTL - DEN
Nonstop2h 31mFrontier
mié. 4/96:00 amDEN - STL
Nonstop2h 06mFrontier
Deal found 3/5$58
This CheapOair deal was found by Cheapflights users on 3/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/245:41 pmSTL - MCO
Nonstop2h 32mFrontier
mar. 4/2910:18 pmMCO - STL
Nonstop2h 46mFrontier
Deal found 3/5$100
This CheapOair deal was found by Cheapflights users on 3/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/206:47 pmSTL - MCO
1 stop11h 22mMultiple Airlines
mar. 3/2510:00 pmMCO - STL
Nonstop2h 49mMultiple Airlines
Deal found 3/4$105
This Cheapflightsfares deal was found by Cheapflights users on 3/4. 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. 4/101:06 pmSTL - LAS
Nonstop3h 45mFrontier
vie. 4/1112:22 pmLAS - STL
Nonstop3h 21mFrontier
Deal found 3/4$126
This Mytrip deal was found by Cheapflights users on 3/4. 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.
mar. 3/185:38 pmSTL - MCO
1 stop5h 21mSpirit Airlines
jue. 4/176:00 amMCO - STL
1 stop12h 15mSpirit Airlines
Deal found 3/4$132
This Priceline deal was found by Cheapflights users on 3/5. 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.
dom. 4/136:10 pmSTL - LAS
1 stop8h 49mMultiple Airlines
jue. 4/177:00 amLAS - STL
Nonstop3h 16mMultiple Airlines
Deal found 3/5$175
This United Airlines deal was found by Cheapflights users on 3/4. 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.
mar. 4/14:44 pmSTL - EWR
Nonstop2h 27mUnited Airlines
mié. 4/99:00 pmEWR - STL
Nonstop3h 15mUnited Airlines
Deal found 3/4$177
This Gotogate deal was found by Cheapflights users on 3/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/315:24 pmSTL - LGA
1 stop15h 43mFrontier
lun. 4/711:30 amLGA - STL
1 stop13h 16mFrontier
Deal found 3/4$179
This Southwest deal was found by Cheapflights users on 3/4. 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.
mié. 3/265:40 pmSTL - LGA
Nonstop2h 20mSouthwest
mar. 4/13:40 pmLGA - STL
1 stop4h 50mSouthwest
Deal found 3/4$187
This Southwest deal was found by Cheapflights users on 3/4. 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.
mar. 4/112:00 pmSTL - HOU
1 stop5h 55mSouthwest
mar. 4/86:10 pmHOU - STL
Nonstop2h 00mSouthwest
Deal found 3/4$187
This CheapOair deal was found by Cheapflights users on 3/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/287:03 pmSTL - HOU
1 stop24h 21mFrontier
sáb. 4/512:27 pmHOU - STL
1 stop23h 10mFrontier
Deal found 3/5$190
This United Airlines deal was found by Cheapflights users on 3/4. 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.
mié. 3/266:30 amSTL - LGA
1 stop5h 49mUnited Airlines
mar. 4/111:25 amLGA - STL
1 stop5h 22mUnited Airlines
Deal found 3/4$192

Find flights from St. Louis to USA within your budget

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 marzo 5, 2025.

Fly from

St. Louis

Fly to

USA

Route

Depart

Return

Price

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

mié. 4/2

6:51 pm-8:22 pm

Nonstop2h 31m

Denver Intl

mié. 4/9

6:00 am-9:06 am

Nonstop2h 06m

$58

St. LouisOrlando

STL - MCO

STLMCO

Lambert-St Louis

jue. 4/24

5:41 pm-9:13 pm

Nonstop2h 32m

Orlando

mar. 4/29

10:18 pm-12:04 am

Nonstop2h 46m

$100

St. LouisOrlando

STL - MCO

STLMCO

Lambert-St Louis

jue. 3/20

6:47 pm-7:09 am

1 stop11h 22m

Orlando

mar. 3/25

10:00 pm-11:49 pm

Nonstop2h 49m

$105

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

jue. 4/10

1:06 pm-2:51 pm

Nonstop3h 45m

Las Vegas Harry Reid Intl

vie. 4/11

12:22 pm-5:43 pm

Nonstop3h 21m

$126

St. LouisOrlando

STL - MCO

STLMCO

Lambert-St Louis

mar. 3/18

5:38 pm-11:59 pm

1 stop5h 21m

Orlando

jue. 4/17

6:00 am-5:15 pm

1 stop12h 15m

$132

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

jue. 3/27

8:05 pm-11:25 pm

Nonstop2h 20m

New York LaGuardia

lun. 3/31

6:50 pm-8:45 pm

Nonstop2h 55m

$177

St. LouisNewark

STL - EWR

STLEWR

Lambert-St Louis

mar. 4/1

4:44 pm-8:11 pm

Nonstop2h 27m

Newark

mié. 4/9

9:00 pm-11:15 pm

Nonstop3h 15m

$177

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

lun. 3/31

5:24 pm-10:07 am

1 stop15h 43m

New York LaGuardia

lun. 4/7

11:30 am-11:46 pm

1 stop13h 16m

$179

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

dom. 4/13

6:10 pm-12:59 am

1 stop8h 49m

Las Vegas Harry Reid Intl

dom. 4/20

7:00 am-12:16 pm

Nonstop3h 16m

$187

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

mar. 4/1

12:00 pm-5:55 pm

1 stop5h 55m

Houston Hobby

mar. 4/8

6:10 pm-8:10 pm

Nonstop2h 00m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/5

Showing 1-10 of 60 results
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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.

Travel insights for flights from St. Louis to USA

Get recent, data-driven insights about flights from St. Louis to USA including ideal travel times, pricing trends, and more.

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 $344). 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 marzo 5, 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.

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 marzo 5, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,321 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest
8.1
Very good
4,321 reviews
Southwest
8.1
Very good
4,321 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Alaska Airlines
8.0
Very good
9,711 reviews
Southwest
8.1
Very good
4,321 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta
8.0
Very good
8,044 reviews
Southwest
8.1
Very good
4,321 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Hawaiian Airlines
7.9
Good
2,318 reviews
Southwest
8.1
Very good
4,321 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines
7.4
Good
8,655 reviews
Southwest
8.1
Very good
4,321 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 14 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 Frontier, which is currently one of the cheapest options available, starting at $43. Spirit Airlines flights start at $64 while deals on Delta start at $89 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 - Las Vegas Harry Reid Intl and Lambert-St Louis - Orlando.

  • 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: Qatar Airways (84%), Japan Airlines (84%), Alaska 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 $1,099, our data indicates the cheapest price to be $163. The most popular route (Lambert-St Louis - Seattle/Tacoma Intl), is priced around $178.

  • 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 $344). 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

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Alternative routes for St. Louis to USA

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from St. Louis to USA

Discover the top 9 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 marzo 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$44Average$183FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$69Average$198FlexibilityNo cancel feeOn-time65%
DeltaCheapest$131Average$353FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$150Average$410FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$178Average$415FlexibilityNo cancel feeOn-time63%
Southern / MokuleleCheapest$186Average$244FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$192Average$395FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$217Average$493FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$236Average$491FlexibilityNo cancel feeOn-time75%
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