Latest deals
When to book
FAQs
Price Alerts

Cheap flights from Aguascalientes to St. Louis from $545

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Aguascalientes to St. Louis departing on 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Aguascalientes to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:25 am - 10:59 pmAGU  Aguascalients-STL Lambert-St Louis
15h 34m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
United Airlines Logo
8:00 am - 7:27 pmSTL  Lambert-St Louis-AGU Aguascalients
12h 27m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
$545United Airlines
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
6:25 am - 2:10 pmAGU  Aguascalients-STL Lambert-St Louis
6h 45m1 stop Houston George Bush Intcntl
United Airlines Logo
8:35 am - 7:27 pmSTL  Lambert-St Louis-AGU Aguascalients
11h 52m1 stop Houston George Bush Intcntl
$545United Airlines
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
6:25 am - 2:10 pmAGU  Aguascalients-STL Lambert-St Louis
6h 45m1 stop Houston George Bush Intcntl
United Airlines Logo
6:15 am - 11:59 amSTL  Lambert-St Louis-AGU Aguascalients
6h 44m1 stop Houston George Bush Intcntl
$545United Airlines
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
6:25 am - 9:21 pmAGU  Aguascalients-STL Lambert-St Louis
13h 56m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
United Airlines Logo
8:35 am - 7:27 pmSTL  Lambert-St Louis-AGU Aguascalients
11h 52m1 stop Houston George Bush Intcntl
$545United Airlines
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
6:25 am - 10:59 pmAGU  Aguascalients-STL Lambert-St Louis
15h 34m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
United Airlines Logo
6:15 am - 11:59 amSTL  Lambert-St Louis-AGU Aguascalients
6h 44m1 stop Houston George Bush Intcntl
$545United Airlines
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
6:25 am - 2:10 pmAGU  Aguascalients-STL Lambert-St Louis
6h 45m1 stop Houston George Bush Intcntl
United Airlines Logo
6:15 am - 11:59 amSTL  Lambert-St Louis-AGU Aguascalients
6h 44m1 stop Houston George Bush Intcntl
$546United Airlines
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
6:25 am - 10:59 pmAGU  Aguascalients-STL Lambert-St Louis
15h 34m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
United Airlines Logo
6:15 am - 11:59 amSTL  Lambert-St Louis-AGU Aguascalients
6h 44m1 stop Houston George Bush Intcntl
$546United Airlines
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
12:46 pm - 12:40 pmAGU  Aguascalients-STL Lambert-St Louis
23h 54m2 stops Houston George Bush Intcntl Newark
United Airlines Logo
3:15 pm - 12:05 pmSTL  Lambert-St Louis-AGU Aguascalients
20h 50m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
$565United Airlines
Thu, Jan 28 - Mon, Feb 1
United Airlines Logo
12:46 pm - 11:09 amAGU  Aguascalients-STL Lambert-St Louis
22h 23m2 stops Houston George Bush Intcntl Newark
United Airlines Logo
11:00 am - 8:31 pmSTL  Lambert-St Louis-AGU Aguascalients
9h 31m1 stop Houston George Bush Intcntl
$565United Airlines
Thu, Jan 28 - Mon, Feb 1
United Airlines Logo
6:25 am - 10:59 pmAGU  Aguascalients-STL Lambert-St Louis
15h 34m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
United Airlines Logo
8:00 am - 7:27 pmSTL  Lambert-St Louis-AGU Aguascalients
12h 27m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
$591United Airlines
Thu, Oct 1 - Mon, Oct 5

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

United Airlines flights from Aguascalientes to St. Louis

Our best United Airlines deals on Aguascalientes to St. Louis flight tickets
United Airlines
Oct 1
AGU6:25 amAguascalients
13h 56m
2 stops
STL9:21 pmLambert-St Louis
Oct 5
STL8:35 amLambert-St Louis
11h 52m
1 stop
AGU7:27 pmAguascalients
$545
United Airlines
Oct 1
AGU6:25 amAguascalients
15h 34m
2 stops
STL10:59 pmLambert-St Louis
Oct 5
STL6:15 amLambert-St Louis
6h 44m
1 stop
AGU11:59 amAguascalients
$546
United Airlines
Jan 28
AGU12:46 pmAguascalients
22h 23m
2 stops
STL11:09 amLambert-St Louis
Feb 1
STL11:00 amLambert-St Louis
9h 31m
1 stop
AGU8:31 pmAguascalients
$565

momondo 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, momondo users made 832,500 searches. Data last updated August 12, 2026.
Use the filters below to find and compare flights from Aguascalientes to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AguascalientesSt. Louis

AGU Aguascalients - STL Lambert-St Louis

AGUSTL

Aguascalients

Thu 10/1

6:25 am-10:59 pm

2 stops15h 34m

Lambert-St Louis

Mon 10/5

8:00 am-7:27 pm

2 stops12h 27m

$545

AguascalientesSt. Louis

AGU Aguascalients - STL Lambert-St Louis

AGUSTL

Aguascalients

Thu 10/1

6:25 am-2:10 pm

1 stop6h 45m

Lambert-St Louis

Mon 10/5

8:35 am-7:27 pm

1 stop11h 52m

$545
Quickest round-trip

AguascalientesSt. Louis

AGU Aguascalients - STL Lambert-St Louis

AGUSTL

Aguascalients

Thu 10/1

6:25 am-2:10 pm

1 stop6h 45m

Lambert-St Louis

Mon 10/5

6:15 am-11:59 am

1 stop6h 44m

$545

AguascalientesSt. Louis

AGU Aguascalients - STL Lambert-St Louis

AGUSTL

Aguascalients

Thu 10/1

6:25 am-9:21 pm

2 stops13h 56m

Lambert-St Louis

Mon 10/5

8:35 am-7:27 pm

1 stop11h 52m

$545

AguascalientesSt. Louis

AGU Aguascalients - STL Lambert-St Louis

AGUSTL

Aguascalients

Thu 10/1

6:25 am-10:59 pm

2 stops15h 34m

Lambert-St Louis

Mon 10/5

6:15 am-11:59 am

1 stop6h 44m

$545

AguascalientesSt. Louis

AGU Aguascalients - STL Lambert-St Louis

AGUSTL

Aguascalients

Thu 10/1

6:25 am-2:10 pm

1 stop6h 45m

Lambert-St Louis

Mon 10/5

6:15 am-11:59 am

1 stop6h 44m

$546

AguascalientesSt. Louis

AGU Aguascalients - STL Lambert-St Louis

AGUSTL

Aguascalients

Thu 10/1

6:25 am-10:59 pm

2 stops15h 34m

Lambert-St Louis

Mon 10/5

6:15 am-11:59 am

1 stop6h 44m

$546

AguascalientesSt. Louis

AGU Aguascalients - STL Lambert-St Louis

AGUSTL

Aguascalients

Thu 1/28

12:46 pm-12:40 pm

2 stops23h 54m

Lambert-St Louis

Mon 2/1

3:15 pm-12:05 pm

2 stops20h 50m

$565

AguascalientesSt. Louis

AGU Aguascalients - STL Lambert-St Louis

AGUSTL

Aguascalients

Thu 1/28

12:46 pm-11:09 am

2 stops22h 23m

Lambert-St Louis

Mon 2/1

11:00 am-8:31 pm

1 stop9h 31m

$565

AguascalientesSt. Louis

AGU Aguascalients - STL Lambert-St Louis

AGUSTL

Aguascalients

Thu 10/1

6:25 am-10:59 pm

2 stops15h 34m

Lambert-St Louis

Mon 10/5

8:00 am-7:27 pm

2 stops12h 27m

$591

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Aguascalientes to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Aguascalientes to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Aguascalientes to St. Louis (AGU to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Aguascalientes to St. Louis

Fastest flight time

13h 56m

Direct flights

None
The fastest flight from Aguascalientes to St. Louis takes 13h 56m
There are no direct flights from Aguascalientes to St. Louis. There are no popular flight routes from Aguascalientes to St. Louis.
Search flight deals

Frequently asked questions about flying from Aguascalientes to St. Louis

  • How far is Aguascalients to Lambert-St Louis by plane?

    The distance between Aguascalients and Lambert-St Louis is about 1359.5 mi. A reasonable flight in good conditions will take 13h 56m.

  • When did momondo last update prices for flights from Aguascalients Airport to Lambert-St Louis Airport?

    Prices for flights from Aguascalients Airport to Lambert-St Louis Airport are updated daily.

  • How old do you have to be to fly from Aguascalients Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Aguascalients Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Aguascalientes to St. Louis

  • How do I get Price Alerts for flights from Aguascalientes to St. Louis?

    Search flight deals from Aguascalientes to St. Louis. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Aguascalientes to St. Louis with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
St. Peters
Maryland Heights
Collinsville
Florissant
Alton
O'Fallon
Farmington
Clayton
Fenton
Festus
Wentzville
Eureka
Edwardsville
Litchfield
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Aguascalientes to St. Louis?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Aguascalientes.

Can I find flights from Aguascalientes to St. Louis with flexible booking policies on momondo?

momondo does allow users to show only those flights to St. Louis from Aguascalientes which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Aguascalientes to St. Louis?

momondo helps you find the best flight between Aguascalientes and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Aguascalientes to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Aguascalientes to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 9/11
Fri 9/18
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States