$936 Cheap Flights from Knock (NOC) to St. Louis (STL)

View $936 flight on Sat, Aug 29, 2026Opens in a new window

Popular airlines from Knock (NOC-Ireland West) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Knock to St. Louis (NOC-STL)

Prices were available within the past 7 days and start at $936 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Knock (NOC) to St. Louis (STL)
Origin airport
Ireland West
Destination airport
Lambert-St. Louis Intl.
Distance
3801 mi

Knock to St. Louis Flights

The cheapest times to fly from Knock 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 Knock to St. Louis are during the month of . You can find some of the cheapest flights from Knock to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Knock 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 Knock 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 Knock to St. Louis in 2026. You can also book with separate airlines for your outbound and return journeys, from $936 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 Knock 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 Knock 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.

 

Frequently asked questions

How much does a flight from Ireland West Airport (NOC) to Lambert-St. Louis Intl. Airport (STL) cost?
Snag a cheap one-way flight from $936 or cheap return flight from Ireland West Airport (NOC) 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 offers on this route.
What is the cheapest month to fly from Ireland West Airport (NOC) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from NOC to STL is , when demand is low. Off-peak months are typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from Ireland West Airport (NOC) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from NOC to STL, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Ireland West Airport (NOC) to Lambert-St. Louis Intl. Airport (STL)?
You'll have to hop on a flight with a layover if you're traveling from Ireland West Airport (NOC) to Lambert-St. Louis Intl. Airport (STL). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from NOC to STL?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ireland West Airport (NOC) to Lambert-St. Louis Intl. Airport (STL)?
To touch down at Lambert-St. Louis Intl. Airport (STL) on schedule, select a flight that takes off from Ireland West Airport (NOC) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Ireland West Airport (NOC) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your ticket from NOC to STL right before your trip is generally more expensive. But if you're flexible with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a NOC to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a NOC to STL flight and hotel package with Expedia could result in significant savings. What's more, managing everything in one place will take the stress out of travel planning. Simply secure your flights and select from our extensive range of hotels, then tailor your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Ireland West Airport (NOC) to Lambert-St. Louis Intl. Airport (STL)?
Typically, you can cancel or modify your NOC to STL flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you'd like further details, go to our Customer Service portal.

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*Available to One Key members.