Cheap Flights from St Louis to Shannon

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Flight deals from St Louis to Shannon

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Shannon Airport? If you want to travel next month, return fares start from Rs290,895. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from St Louis to Shannon

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Shannon flights are currently cheapest in September.

St Louis to Shannon: Alternative routes

Compare routes from St Louis to Shannon below. You may find an airport to fly into that's cheaper, faster, or easier than Shannon.

St Louis to Shannon: Flight information

The things to know before you go.
Cheapest flight foundRs109,520
Cheapest month to flySeptember

Finding cheap flights from St Louis to Shannon: Frequently asked questions

The best price we found for a return flight from St Louis to Shannon is Rs198,826. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from St Louis to Shannon. But we found flights with one or more stops from Rs198,826.
As of April 2026, there are no flights flying from St Louis to Shannon.
The cheapest month to fly from St Louis to Shannon is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Shannon Airport on Sunday, 16 August 2026.
No airlines currently offer direct flights between St Louis Airport and Shannon Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Shannon but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Shannon is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, KLM offers the cheapest flight tickets to Shannon.

Travelling from Lambert-St. Louis International Airport (STL) to Shannon Airport (SNN): what you need to know

  • The timezone in Shannon is UTC+0, which is five hours ahead of St Louis.

  • Your STL to SNN flight won't wait if you're late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

  • You can expect bigger queues in popular months such as July. Arriving up to four hours in advance for an international flight and two hours for domestic departures is a good idea.

  • Think about adding a stopover when booking your ticket from Lambert-St. Louis International Airport to Shannon Airport. Just uncheck 'Direct flights only' to break up your trip, or enjoy a detour to a new and interesting place. Here are some options between STL and SNN:

    • O'Hare International Airport

    • Newark Liberty International Airport

    • Logan International Airport

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Shannon Airport (SNN)

  • Rs109,520 is the lowest price for a one-way Lambert-St. Louis International Airport to Shannon Airport flight. Return flights start at Rs198,826. These prices may change based on demand and availability.

  • Don't leave everything to the last minute. You're more likely to find cheap tickets from STL to SNN if you book early. Airlines often offer some great early bird deals.

  • If you're willing to be flexible with your travel dates, try using the 'Whole month' search function. It'll find the cheapest price across every month when searching for your flight from Lambert-St. Louis International Airport to Shannon Airport.

  • Save time searching for cheap flights from STL to SNN by setting up a Price Alert. You'll get an email or push notification on the app when a new low fare is offered.

  • Pick your ideal departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from Lambert-St. Louis International Airport to Shannon Airport.

Handy information about Lambert-St. Louis International Airport (STL)

  • The address for STL is 10701 Lambert International Blvd..

  • When it comes to the on-time performance of Lambert-St. Louis International Airport, data shows 78.04% of flights arrive within the scheduled timeframe.

  • Lambert-St. Louis International Airport is around 26 kilometres from central St Louis. If you're driving, ride-sharing or catching a cab from the centre, it'll take 20 minutes or so to arrive, depending on the traffic.

  • Planning to catch public transport? You can expect a journey time of around 35 minutes.

  • Searching for a convenient hotel close to STL? If you're boarding an early flight from Lambert-St. Louis International Airport to Shannon Airport, these accommodation options will have you moments from your departure lounge:

Arriving at Shannon Airport (SNN)

Getting from Shannon Airport (SNN) to central Shannon

  • Shannon Airport to the centre of Shannon has a drive time of around 5 minutes. It's approximately 5 kilometres away.

  • It takes around 10 minutes when travelling by public transport.

When to fly to Shannon Airport (SNN)

  • The quietest month for a flight from Lambert-St. Louis International Airport to Shannon Airport is April, while August is the most popular. Choose the ideal time to visit Shannon based on whether you prefer a more relaxed vibe or a faster pace.

  • The warmest month in Shannon is July, with the temperature ranging between 10ºC and 22ºC. Lock in your flights from Lambert-St. Louis International Airport to Shannon Airport in this month if you enjoy this type of weather.

  • Search for cheap tickets from STL to SNN in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 0ºC and 9ºC on average.

Explore more of Ireland

  • You've seen Shannon, now it's time to explore other corners of Ireland. Travel around 193 kilometres north-east to Dublin to check off its top attractions. From Guinness Storehouse to Trinity College Library and Dublin Castle, you'll have a packed itinerary ahead.

  • Around 97 kilometres south of Shannon, Cork is another essential stop in Ireland. Start your sightseeing at Blarney Castle, Fota Wildlife Park and Titanic Experience Cobh.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.