Cheap flights from Aguascalientes to St. Louis from $475

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 4/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:40 pm - 10:27 amAGU-STL
20h 47m2 stops
United Airlines Logo
3:15 pm - 11:33 amSTL-AGU
21h 18m2 stops
$475United Airlines
Find Deal
Thu, Apr 2 - Mon, Apr 6
United Airlines Logo
7:00 am - 9:42 amAGU-STL
25h 42m1 stop
United Airlines Logo
6:15 am - 7:27 pmSTL-AGU
14h 12m1 stop
$478United Airlines
Find Deal
Thu, Apr 2 - Mon, Apr 6
United Airlines Logo
12:40 pm - 10:06 pmAGU-STL
8h 26m1 stop
United Airlines Logo
4:17 pm - 7:27 pmSTL-AGU
28h 10m1 stop
$479United Airlines
Find Deal
Thu, Apr 2 - Mon, Apr 6

United Airlines flights from Aguascalientes to St. Louis

Our best United Airlines deals on Aguascalientes to St. Louis flight tickets
United Airlines
Apr 2
AGU12:40 pmAguascalients
20h 47m
2 stops
STL10:27 amLambert-St Louis
Apr 6
STL3:15 pmLambert-St Louis
21h 18m
2 stops
AGU11:33 amAguascalients
United Airlines
Apr 2
AGU7:00 amAguascalients
25h 42m
1 stop
STL9:42 amLambert-St Louis
Apr 6
STL6:15 amLambert-St Louis
14h 12m
1 stop
AGU7:27 pmAguascalients
United Airlines
Apr 2
AGU12:40 pmAguascalients
8h 26m
1 stop
STL10:06 pmLambert-St Louis
Apr 6
STL4:17 pmLambert-St Louis
28h 10m
1 stop
AGU7:27 pmAguascalients

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 November 6, 2025.
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

AguascalientesSt. Louis

AGU - STL

AGUSTL

Aguascalients

Thu 4/2

12:40 pm-10:27 am

2 stops20h 47m

Lambert-St Louis

Mon 4/6

3:15 pm-11:33 am

2 stops21h 18m

$475

AguascalientesSt. Louis

AGU - STL

AGUSTL

Aguascalients

Thu 4/2

7:00 am-9:42 am

1 stop25h 42m

Lambert-St Louis

Mon 4/6

6:15 am-7:27 pm

1 stop14h 12m

$478

AguascalientesSt. Louis

AGU - STL

AGUSTL

Aguascalients

Thu 4/2

12:40 pm-10:06 pm

1 stop8h 26m

Lambert-St Louis

Mon 4/6

4:17 pm-7:27 pm

1 stop28h 10m

$479

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

Direct flights

None
There are no direct flights from Aguascalientes to St. Louis. There are no popular flight routes 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 8h 26m.

  • 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.

  • 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
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
Litchfield
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.

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