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$35+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — STL
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
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 75 days in advance, depart on a Thursday or Monday and return on a Friday

Cheap 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 September 14, 2025.

Round-trip from

$114
(Gotogate)

One-way from

$35
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$262
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 ($50 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 14, 2025.

This Gotogate deal was found by Cheapflights users on 9/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/97:30 amDFW - STL
Nonstop1h 52mFrontier
Sun 10/127:52 pmSTL - DFW
1 stop13h 39mFrontier
Deal found 9/12$114
This Booking.com deal was found by Cheapflights users on 9/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/97:30 amDFW - STL
Nonstop1h 52mFrontier
Tue 10/217:52 pmSTL - DFW
1 stop28h 27mFrontier
Deal found 9/12$115
This Frontier deal was found by Cheapflights users on 9/14. 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.
Sat 11/110:25 pmDFW - STL
1 stop11h 42mFrontier
Sun 11/212:20 pmSTL - DFW
Nonstop1h 57mFrontier
Deal found 9/14$120
This Booking.com deal was found by Cheapflights users on 9/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/610:34 pmDFW - STL
1 stop15h 23mFrontier
Sun 11/912:10 pmSTL - DFW
Nonstop1h 57mFrontier
Deal found 9/12$121
This Trip.com deal was found by Cheapflights users on 9/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:54 amDFW - STL
1 stop11h 43mFrontier
Sun 10/510:39 amSTL - DFW
Nonstop1h 50mFrontier
Deal found 9/12$123
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Thu 10/167:30 amDFW - STL
Nonstop1h 52mFrontier
Sun 10/1910:17 amSTL - DFW
Nonstop1h 57mFrontier
Deal found 9/13$124
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/410:25 pmDFW - STL
1 stop10h 42mFrontier
Sun 11/912:10 pmSTL - DFW
Nonstop1h 57mFrontier
Deal found 9/12$127
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Thu 10/97:30 amDFW - STL
Nonstop1h 52mFrontier
Mon 10/137:52 pmSTL - DFW
1 stop13h 17mFrontier
Deal found 9/14$129
This Orbitz deal was found by Cheapflights users on 9/13. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/218:00 amDFW - STL
Nonstop1h 54mMultiple Airlines
Thu 9/2510:35 amSTL - DFW
1 stop7h 22mMultiple Airlines
Deal found 9/13$132
This Frontier deal was found by Cheapflights users on 9/14. 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.
Sat 10/118:00 amDFW - STL
1 stop7h 56mFrontier
Sun 10/1210:17 amSTL - DFW
Nonstop1h 57mFrontier
Deal found 9/14$134

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 September 14, 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

Wed 10/15

2:22 pm-9:07 am

1 stop18h 45m

Lambert-St Louis

Fri 10/24

6:42 pm-10:26 am

1 stop15h 44m

$155

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Fri 11/7

10:34 pm-9:07 am

2 stops10h 33m

Lambert-St Louis

Sun 11/9

12:10 pm-2:07 pm

Nonstop1h 57m

$155

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Fri 10/3

10:45 pm-9:06 am

2 stops10h 21m

Lambert-St Louis

Sun 10/5

10:39 am-12:29 pm

Nonstop1h 50m

$155

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Tue 10/28

7:45 am-9:07 am

1 stop25h 22m

Lambert-St Louis

Tue 11/4

7:45 pm-11:09 am

1 stop15h 24m

$157

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Sat 11/1

10:25 pm-10:07 am

1 stop11h 42m

Lambert-St Louis

Sun 11/2

12:20 pm-2:17 pm

Nonstop1h 57m

$157

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Thu 10/30

1:51 pm-3:57 pm

1 stop26h 06m

Lambert-St Louis

Sun 11/2

2:12 pm-7:57 am

1 stop17h 45m

$165

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Mon 10/13

9:36 pm-9:07 am

1 stop11h 31m

Lambert-St Louis

Fri 10/24

9:59 pm-5:43 am

1 stop7h 44m

$170

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Thu 11/6

5:35 am-9:07 am

1 stop27h 32m

Lambert-St Louis

Fri 11/7

9:07 pm-5:29 am

1 stop8h 22m

$176

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Thu 10/9

10:04 pm-11:49 pm

Nonstop1h 45m

Lambert-St Louis

Sat 10/11

7:00 am-8:58 am

Nonstop1h 58m

$179

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Tue 11/4

10:25 pm-9:07 am

1 stop10h 42m

Lambert-St Louis

Sat 11/8

7:45 pm-9:33 am

1 stop13h 48m

$180

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 19 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 September 12, 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 75 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 $311). Flying from Irving to St. Louis in March is currently the most expensive (average of $356). 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 September 14, 2025.

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

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 Thursday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Irving to St. Louis

Explore weekly flight availability from Irving to St. Louis. 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 September 14, 2025.

The most flights from 1RV to STL are scheduled on a Sunday (30 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (22 on average).

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 September 14, 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
4,245 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

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
8.0
Very good
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

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.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

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.
Frontier
5.8
Fair
3,173 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

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 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 27 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 18h 45m. The distance from Irving to St. Louis is about 550 mi.

  • 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 (100%), GOL (83%), Envoy Air( 71%).

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

    While on average a flight from Irving to St. Louis is generally $161, our data shows the cheapest flight currently is $65. When looking at the most popular route, (Dallas/Fort Worth - Lambert-St Louis), you can expect to pay $126 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 $311). Flying from Irving to St. Louis in March is currently the most expensive (average of $356). 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
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 September 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$76Average$179FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$177Average$316FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$177Average$383FlexibilityNo cancel feeOn-time71%

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