Cheap flights from St. Louis to Shannon from $527
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Shannon departing on 8/3. 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
United Airlines flights from St. Louis to Shannon, Clare
Our best United Airlines deals on St. Louis to Shannon, Clare flight tickets
British Airways flights from St. Louis to Shannon, Clare
Our best British Airways deals on St. Louis to Shannon, Clare flight tickets
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How to get the cheapest flight ticket from St. Louis to Shannon, Clare
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Shannon, Clare?
In general, December is the cheapest month to fly from St. Louis to Shannon, Clare. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $515. If you are unable to visit Shannon, Clare during the month of December, then departing from St. Louis during the month November is also very affordable. Most momondo users find prices during this month for around $518.
What is the cheapest day to depart on your flight to Shannon, Clare?
The cheapest day to depart from St. Louis to Shannon, Clare is on a Tuesday when prices can be found for as low as $718. The most expensive day to fly to Shannon, Clare is Saturday, with ticket prices averaging around $1,188.
When to book flights from St. Louis to Shannon, Clare
Cheap St. Louis to Shannon, Clare (STL to SNN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Shannon, Clare
How far is Lambert-St Louis to Shannon by plane?
The straight-line distance from Lambert-St Louis to Shannon is 3824.7 mi. By plane, this route typically takes 10h 10m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Shannon Airport?
Prices for flights from Lambert-St Louis Airport to Shannon Airport are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Shannon Airport?
The number of operators available for flights from Lambert-St Louis Airport to Shannon Airport is 2 as of June 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Shannon Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Shannon Airport.
What documentation or ID do you need to fly to Shannon Airport?
The travel and health documents you'll need for your trip to Shannon Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Shannon Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Shannon, Clare?
Based on momondo bookings for flights between St. Louis and Shannon, Clare, the leading airline is United Airlines, making up 72% of the total bookings. Other popular airlines include American Airlines with 28%.
Best airlines flying from St. Louis to Shannon, Clare
Compare and see reviews for airlines that fly from St. Louis to Shannon, Clare with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $518 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $709 | Free Cancellation | Rating 7.4 8,801 reviews |
Traveling to a place near Shannon?
Book flights to Shannon if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from St. Louis to Shannon?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Shannon. momondo saves you time and could save you money on your trip.
Can I find flights from St. Louis to Shannon with flexible booking policies on momondo?
Yes. All flights to Shannon from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from St. Louis to Shannon?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Shannon from St. Louis.
I’m not ready to book a flight from St. Louis to Shannon right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Shannon from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.