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St. Louis

$46+ Cheap flights from Irving, TX to St. Louis (STL)

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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — STL
Jan 2 — Jan 91
Fri 1/2
Fri 1/9
1 adult, Economy
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Cheapflights Tip: The best prices from Irving to Lambert-St Louis are usually found in August or July, booked 88 days in advance, depart on a Thursday or Sunday and return on a Thursday

Cheap flight deals from Irving to St. Louis

Cheapest flights from Irving to St. Louis
Explore the most affordable flight options available from Irving to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 3, 2025.

This Frontier deal was found by Cheapflights users on 12/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/162:09 pmDFW - STL
1 stop8h 24mFrontier
Tue 12/2310:10 pmSTL - DFW
1 stop7h 33mFrontier
Deal found 12/1$163
This Frontier deal was found by Cheapflights users on 12/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/162:09 pmDFW - STL
1 stop8h 24mFrontier
Sat 12/2010:10 pmSTL - DFW
1 stop7h 33mFrontier
Deal found 12/1$164
This Trip.com deal was found by Cheapflights users on 11/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:59 pmDFW - STL
1 stop7h 34mFrontier
Tue 1/65:11 pmSTL - DFW
1 stop20h 19mFrontier
Deal found 11/30$172
This Mytrip deal was found by Cheapflights users on 12/1. 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.
Tue 12/308:57 pmDFW - STL
1 stop25h 36mFrontier
Sun 1/410:10 pmSTL - DFW
1 stop18h 29mFrontier
Deal found 12/1$175
This Kiwi.com deal was found by Cheapflights users on 12/3. 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.
Wed 12/311:01 pmDFW - STL
1 stop20h 39mMultiple Airlines
Wed 1/77:43 pmSTL - DFW
1 stop17h 10mMultiple Airlines
Deal found 12/3$182
This Expedia deal was found by Cheapflights users on 12/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/139:00 pmDFW - STL
1 stop11h 59mFrontier
Mon 12/1510:47 amSTL - DFW
1 stop12h 07mFrontier
Deal found 12/1$183
This CheapOair deal was found by Cheapflights users on 12/2. 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.
Thu 12/119:00 pmDFW - STL
1 stop11h 59mFrontier
Wed 1/77:43 pmSTL - DFW
1 stop19h 31mFrontier
Deal found 12/2$184
This CheapOair deal was found by Cheapflights users on 12/2. 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.
Sun 12/1410:15 pmDFW - STL
1 stop13h 07mFrontier
Wed 12/177:43 pmSTL - DFW
1 stop28h 26mFrontier
Deal found 12/2$188
This Kiwi.com deal was found by Cheapflights users on 12/1. 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.
Sun 12/1410:38 pmDFW - STL
1 stop13h 34mFrontier
Thu 12/1810:42 amSTL - DFW
1 stop12h 17mFrontier
Deal found 12/1$189
This Kiwi.com deal was found by Cheapflights users on 12/2. 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.
Mon 12/1510:46 pmDFW - STL
2 stops35h 28mFrontier
Thu 12/1810:42 amSTL - DFW
1 stop12h 17mFrontier
Deal found 12/2$191
This American Airlines deal was found by Cheapflights users on 12/2. 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.
Wed 12/319:05 amDFW - STL
Nonstop1h 45mAmerican Airlines
Sat 1/36:44 pmSTL - DFW
Nonstop2h 00mAmerican Airlines
Deal found 12/2$192
This Kiwi.com deal was found by Cheapflights users on 12/1. 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.
Wed 12/179:45 amDFW - STL
2 stops12h 48mFrontier
Thu 12/1810:42 amSTL - DFW
1 stop12h 17mFrontier
Deal found 12/1$195

Find flight deals from Irving to St. Louis

Keep the following information in mind while searching for Irving to St. Louis flight deals. Data was last updated December 3, 2025.

Round-trip from

$147
(Kiwi.com)

One-way from

$46
(American Airlines)

Popular in

March

Cheapest in

August

Average price

$325
From Irving to Lambert-St Louis
Search Deals
One-way flight from Irving to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Irving 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, Cheapflights users made 2,558,603 searches. Data last updated December 3, 2025.
Use the filters below to find and compare flights from Irving to St. Louis that are best for you.

Fly from

Irving

Fly to

St. Louis

Route

Depart

Return

Price

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Thu 2/19

5:22 am-11:02 am

1 stop5h 40m

Lambert-St Louis

Sat 2/21

7:10 am-12:36 pm

1 stop5h 26m

$177

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Sun 12/14

10:15 am-8:59 am

1 stop22h 44m

Lambert-St Louis

Wed 12/17

7:43 pm-12:09 am

1 stop28h 26m

$188

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Fri 12/12

10:38 pm-10:14 am

1 stop11h 36m

Lambert-St Louis

Wed 12/17

3:30 pm-8:00 pm

1 stop28h 30m

$202

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Thu 1/1

9:05 am-10:50 am

Nonstop1h 45m

Lambert-St Louis

Thu 1/8

6:44 pm-11:30 pm

1 stop4h 46m

$216

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Fri 1/16

5:11 pm-10:00 pm

1 stop4h 49m

Lambert-St Louis

Sat 1/17

9:57 am-7:54 pm

2 stops9h 57m

$226

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Thu 1/22

5:19 am-12:29 pm

2 stops7h 10m

Lambert-St Louis

Fri 1/23

2:45 pm-8:45 pm

1 stop6h 00m

$226

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Thu 1/1

5:30 am-12:24 pm

1 stop6h 54m

Lambert-St Louis

Thu 1/8

7:10 am-12:44 pm

1 stop5h 34m

$232

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Sun 1/25

8:12 pm-9:21 am

1 stop13h 09m

Lambert-St Louis

Fri 1/30

1:03 pm-7:58 pm

1 stop6h 55m

$232

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Thu 12/18

10:47 pm-9:25 pm

1 stop22h 38m

Lambert-St Louis

Sun 12/21

10:10 pm-5:43 am

1 stop7h 33m

$233

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Sat 12/6

9:00 pm-8:59 am

1 stop11h 59m

Lambert-St Louis

Mon 12/15

12:07 pm-8:00 pm

1 stop7h 53m

$234

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Showing 1-10 of 21 results
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Best time to book a flight from Irving to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Irving 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 Irving to St. Louis

How far ahead should I book a flight from Irving to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Irving to St. Louis. Price data was last updated on November 28, 2025.

The price you pay for your flight from Irving to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 88 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Irving to St. Louis (average of $87). Flying from Irving to St. Louis in March is currently the most expensive (average of $197). 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 1RV to STL?

Find hourly flight availability from Irving to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 3, 2025.

It’s typically best to fly out from Irving to St. Louis in the evening. Doing so could potentially save you 14% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Irving to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Irving to St. Louis. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Irving to St. Louis flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated December 3, 2025.
Read through reviews of airlines operating flights from Irving to St. Louis, such as Southwest, American Airlines, and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,253 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

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
8.0
Very good
4,253 reviews
Southwest
8.0
Very good
4,253 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

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.
American Airlines
7.2
Good
11,045 reviews
Southwest
8.0
Very good
4,253 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

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.
Frontier
5.8
Fair
3,093 reviews
Southwest
8.0
Very good
4,253 reviews

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

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 Irving to St. Louis. 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 into for flights to St. Louis from Irving?

    For a flight from Irving to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 6 inbound flights from Irving per day. 3 airlines have flights to Lambert-St Louis from Irving on a regular basis.

  • How long is the flight from Irving to St. Louis?

    Departing from Irving to St. Louis will take you 1h 45m. The distance from Irving to St. Louis is about 550 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $49. However, be on the lookout for offers from Southwest and American Airlines, as they are both options that can get you from Irving to St. Louis for a low price.

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

    Before booking your flight to St. Louis from Irving, check out the most reliable airlines to get you to your destination on time: Frontier (90%), SkyWest Airlines (80%), Finnair( 75%).

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

    While on average a flight from Irving to St. Louis is generally $224, our data shows the cheapest flight currently is $40. When looking at the most popular route, (Dallas/Fort Worth - Lambert-St Louis), you can expect to pay $146 for that flight.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Irving to St. Louis (average of $87). Flying from Irving to St. Louis in March is currently the most expensive (average of $197). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Swansea
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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Top 3 airlines flying from Irving to St. Louis

Discover the top 3 airlines that operate flights from Irving to St. Louis. 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 December 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$81Average$179FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$176Average$379FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$315FlexibilityNo cancel feeOn-time63%

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