$265 Cheap Flights from Querétaro (QRO) to St. Louis (STL)

View $265 flight on Sat, Sep 27, 2025Opens in a new window

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Cheap Flights from Querétaro to St. Louis (QRO-STL)

Prices were available within the past 7 days and start at $265 for one-way flights and $489 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, Oct 29 - Sat, Nov 15
QRO
Querétaro
STL
St. Louis
$489 Roundtrip, found 15 hours ago
$489
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Wed, Oct 29 from Querétaro to St. Louis, returning Sat, Nov 15, priced at $489 found 15 hours ago
Frontier Airlines
Wed, Oct 29 - Fri, Nov 14
QRO
Querétaro
STL
St. Louis
$510 Roundtrip, found 15 hours ago
$510
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Wed, Oct 29 from Querétaro to St. Louis, returning Fri, Nov 14, priced at $510 found 15 hours ago
American Airlines
Wed, Dec 17 - Thu, Jan 1
QRO
Querétaro
STL
St. Louis
$520 Roundtrip, found 11 hours ago
$520
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Wed, Dec 17 from Querétaro to St. Louis, returning Thu, Jan 1, priced at $520 found 11 hours ago
Aeromexico
Tue, Oct 21 - Mon, Nov 10
QRO
Querétaro
STL
St. Louis
$520 Roundtrip, found 15 hours ago
$520
Roundtrip
found 15 hours ago
Select Aeromexico flight, departing Tue, Oct 21 from Querétaro to St. Louis, returning Mon, Nov 10, priced at $520 found 15 hours ago
United
Wed, Dec 17 - Thu, Jan 1
QRO
Querétaro
STL
St. Louis
$520 Roundtrip, found 11 hours ago
$520
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Dec 17 from Querétaro to St. Louis, returning Thu, Jan 1, priced at $520 found 11 hours ago
United
Wed, Dec 17 - Thu, Jan 1
QRO
Querétaro
STL
St. Louis
$525 Roundtrip, found 11 hours ago
$525
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Dec 17 from Querétaro to St. Louis, returning Thu, Jan 1, priced at $525 found 11 hours ago
American Airlines
Wed, Dec 17 - Thu, Jan 1
QRO
Querétaro
STL
St. Louis
$530 Roundtrip, found 11 hours ago
$530
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Wed, Dec 17 from Querétaro to St. Louis, returning Thu, Jan 1, priced at $530 found 11 hours ago
United
Wed, Dec 17 - Thu, Jan 1
QRO
Querétaro
STL
St. Louis
$531 Roundtrip, found 11 hours ago
$531
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Dec 17 from Querétaro to St. Louis, returning Thu, Jan 1, priced at $531 found 11 hours ago
United
Wed, Oct 22 - Sun, Nov 9
QRO
Querétaro
STL
St. Louis
$534 Roundtrip, found 15 hours ago
$534
Roundtrip
found 15 hours ago
Select United flight, departing Wed, Oct 22 from Querétaro to St. Louis, returning Sun, Nov 9, priced at $534 found 15 hours ago
Delta
Sun, Nov 2 - Sun, Nov 16
QRO
Querétaro
STL
St. Louis
$580 Roundtrip, found 15 hours ago
$580
Roundtrip
found 15 hours ago
Select Delta flight, departing Sun, Nov 2 from Querétaro to St. Louis, returning Sun, Nov 16, priced at $580 found 15 hours ago

Frequently asked questions

How much does a flight from Queretaro Intl. Airport (QRO) to Lambert-St. Louis Intl. Airport (STL) cost?
Lock in a cheap one-way flight from $265 or cheap return flight from $489 from Queretaro Intl. Airport (QRO) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Queretaro Intl. Airport (QRO) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from QRO to STL is October, when demand is low. Off-peak season is typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from Queretaro Intl. Airport (QRO) to Lambert-St. Louis Intl. Airport (STL)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest QRO to STL flight.
How many flights per day from Queretaro Intl. Airport (QRO) to Lambert-St. Louis Intl. Airport (STL)?
Direct flights from Queretaro Intl. Airport (QRO) to Lambert-St. Louis Intl. Airport (STL) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from QRO to STL?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on a range of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Queretaro Intl. Airport (QRO) to Lambert-St. Louis Intl. Airport (STL)?
To arrive at Lambert-St. Louis Intl. Airport (STL) without delays, choose a flight that leaves Queretaro Intl. Airport (QRO) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Queretaro Intl. Airport (QRO) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Last-minute fares from QRO to STL are usually more expensive. To secure the cheapest rates, start searching for flights ahead of time. That being said, if you're flexible with your travel dates, it's possible to land a cheap fare right before you leave.
Is it cheaper to book a QRO to STL flight and hotel package?
You can save money by securing a QRO to STL flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've chosen your ideal flights and accommodations, you can add extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Queretaro Intl. Airport (QRO) to Lambert-St. Louis Intl. Airport (STL)?
Usually, it's possible to reschedule or cancel your QRO to STL flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
Querétaro Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Aeromexico, American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$488
Distance
1381 mi

Book with confidence

Book with confidence

Querétaro to St. Louis Flights

The cheapest times to fly from Querétaro to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Querétaro to St. Louis are during the month of October. You can find some of the cheapest flights from Querétaro to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Querétaro to St. Louis

Sunday is one of the best days to book for cheap flights from Querétaro to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Querétaro to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Querétaro to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $265 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Querétaro to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Querétaro to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Querétaro to St. Louis Flights

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*Available to One Key members.