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$439+ Cheap flights from Aguascalientes, Mexico (AGU) to St. Louis (STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
AGU — STL
Jan 4 — Jan 111
Sun 1/4
Sun 1/11
1 adult, Economy
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Cheap flight deals from Aguascalientes to St. Louis

Cheapest flights from Aguascalientes to St. Louis
Explore the most affordable flight options available from Aguascalientes to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 5, 2025.

This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1212:38 pmAGU - STL
2 stops33h 55mFrontier
Wed 12/314:27 pmSTL - AGU
2 stops45h 45mFrontier
Deal found 12/2$489
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/126:10 amAGU - STL
1 stop15h 48mUnited Airlines
Wed 12/316:30 amSTL - AGU
2 stops14h 01mUnited Airlines
Deal found 12/2$509
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:10 amAGU - STL
2 stops30h 05mUnited Airlines
Wed 12/101:35 pmSTL - AGU
2 stops22h 27mUnited Airlines
Deal found 12/2$591
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 12/31:40 pmAGU - STL
1 stop9h 07mAmerican Airlines
Wed 12/107:00 amSTL - AGU
1 stop15h 11mAmerican Airlines
Deal found 12/2$828
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:40 amAGU - STL
2 stops27h 49mMultiple Airlines
Wed 12/314:05 pmSTL - AGU
3 stops29h 52mMultiple Airlines
Deal found 12/2$2,289

Find flight deals from Aguascalientes to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Aguascalientes (AGU) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$439
(Gotogate)
Provider with most accurate pricing for Aguascalients-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Aguascalients-Lambert-St Louis flights.
Search Deals
From Aguascalients to Lambert-St Louis
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Aguascalientes 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 5, 2025.
Use the filters below to find and compare flights from Aguascalientes to St. Louis that are best for you.

Fly from

Aguascalientes

Fly to

St. Louis

Route

Depart

Return

Price

AguascalientesSt. Louis

AGU - STL

AGUSTL

Aguascalients

Sat 1/17

12:38 pm-6:51 am

2 stops42h 13m

Lambert-St Louis

Sat 1/24

3:46 pm-2:34 pm

2 stops22h 48m

$439

AguascalientesSt. Louis

AGU - STL

AGUSTL

Aguascalients

Thu 1/22

12:45 pm-12:29 pm

2 stops23h 44m

Lambert-St Louis

Mon 1/26

9:57 am-8:31 pm

2 stops10h 34m

$480

AguascalientesSt. Louis

AGU - STL

AGUSTL

Aguascalients

Sat 1/17

6:10 am-3:39 pm

1 stop9h 29m

Lambert-St Louis

Sat 1/24

4:42 pm-12:02 pm

1 stop19h 20m

$522

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Compare providers for flights from Aguascalientes to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Aguascalientes to St. Louis in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Aguascalientes-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Aguascalientes-St. Louis flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Aguascalientes-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Aguascalientes-St. Louis flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Aguascalientes-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

Related info for your journey

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

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

    A quick flight from Aguascalientes to St. Louis can take about 23h 44m. Frontier provides one of the quickest options available for as low as $480. The distance from Aguascalientes to St. Louis is about 1373 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Aguascalientes 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.

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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