Cheap flights from St. Louis (STL) to Shannon (SNN)

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

How to find the cheapest flight from
St. Louis (STL) to Shannon (SNN)

All the information you need to plan the best STL to SNN flight in 2022: compare St. Louis to Shannon flight prices with the expected peak season, weather and rainfall in Shannon.
What is the cheapest day to fly round-trip from St. Louis to Shannon?

Leaving on a Sunday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 34% on the overall cost on flights from St. Louis to Shannon.

When is the cheapest time to fly from St. Louis to Shannon (STL - SNN)?

When flying from St. Louis to Shannon, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 13% versus a flight at noon.

Cheap flights from St. Louis to Shannon in July, August 2022

The best prices found for STL to SNN flights for July, August
5 Aug - 16 Aug
$1,258pp
STL
Lambert-St Louis
American Airlines
   
2 STOPS
SNN
Shannon
SNN
Shannon
American Airlines
   
2 STOPS
STL
Lambert-St Louis
4 Aug - 11 Aug
$1,323pp
STL
Lambert-St Louis
British Airways
   
2 STOPS
SNN
Shannon
SNN
Shannon
British Airways
   
2 STOPS
STL
Lambert-St Louis
4 Aug - 11 Aug
$1,325pp
STL
Lambert-St Louis
American Airlines
   
2 STOPS
SNN
Shannon
SNN
Shannon
American Airlines
   
2 STOPS
STL
Lambert-St Louis

Lambert-St Louis to Shannon 2022 flight deals

Cheap flights to Shannon from St. Louis found for this year
3 Oct - 11 Oct
$607pp
STL
Lambert-St Louis
United Airlines
 
1 STOP
SNN
Shannon
SNN
Shannon
United Airlines
 
1 STOP
STL
Lambert-St Louis
3 Oct - 11 Oct
$611pp
STL
Lambert-St Louis
United Airlines
   
2 STOPS
SNN
Shannon
SNN
Shannon
United Airlines
 
1 STOP
STL
Lambert-St Louis
3 Oct - 11 Oct
$622pp
STL
Lambert-St Louis
United Airlines
   
2 STOPS
SNN
Shannon
SNN
Shannon
United Airlines
   
2 STOPS
STL
Lambert-St Louis

Cheap United Airlines flights from St. Louis to Shannon

3 Oct - 11 Oct
$607pp
STL
Lambert-St Louis
United Airlines
 
1 STOP
SNN
Shannon
SNN
Shannon
United Airlines
 
1 STOP
STL
Lambert-St Louis
3 Oct - 11 Oct
$611pp
STL
Lambert-St Louis
United Airlines
   
2 STOPS
SNN
Shannon
SNN
Shannon
United Airlines
 
1 STOP
STL
Lambert-St Louis
3 Oct - 11 Oct
$622pp
STL
Lambert-St Louis
United Airlines
   
2 STOPS
SNN
Shannon
SNN
Shannon
United Airlines
   
2 STOPS
STL
Lambert-St Louis

Cheap British Airways flights from St. Louis to Shannon

9 Sep - 14 Sep
$803pp
STL
Lambert-St Louis
British Airways
   
2 STOPS
SNN
Shannon
SNN
Shannon
British Airways
   
2 STOPS
STL
Lambert-St Louis
4 Aug - 11 Aug
$1,323pp
STL
Lambert-St Louis
British Airways
   
2 STOPS
SNN
Shannon
SNN
Shannon
British Airways
   
2 STOPS
STL
Lambert-St Louis

One-way flights to Shannon from St. Louis

The cheapest one-way flights from St. Louis to Shannon
5:45 am - 6:05 am
United Airlines
1 Stop
18h 20m
STL - SNN
United Airlines
$706
United
12:00 pm - 6:05 am
United Airlines
1 Stop
12h 05m
STL - SNN
United Airlines
$3,035
United
12:19 pm - 6:05 am
United Airlines
2 Stops
35h 46m
STL - SNN
United Airlines
$621
United

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">Shannon</span> flights.

Flight FAQs

From St. Louis to Shannon

Which airlines flying from Lambert-St Louis to Shannon have flexible cancellations due to COVID-19?

Some of our airline partners flying from Lambert-St Louis to Shannon have new flexible policies in place due to COVID-19. United Airlines, American Airlines, and British Airways are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like United Airlines with this kind of flexibility.

Can I find flights from St. Louis to Shannon for under $700 on Cheapflights?

Yes, there are multiple flights from St. Louis to Shannon for under $700. The cheapest flight booked recently is on United Airlines for just $607, but on average you can expect to pay $1,292.

What are the cheapest airlines flying from St. Louis to Shannon round-trip?

According to our current data, United Airlines ($607), British Airways ($803), and American Airlines ($810) offers the cheapest pricing from St. Louis to Shannon. United Airlines is priced at 29% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest flights from St. Louis to Shannon?

On average you can expect to pay $2,132 for a flight from St. Louis to Shannon. The cheapest flight overall is $672 while the most popular route, (Lambert-St Louis - Shannon) is currently priced at $810.

What are the most popular airlines that fly from St. Louis to Shannon?

The most popular airlines flying from St. Louis to Shannon are American Airlines, British Airways and Delta. Something to consider prior to booking your flight.

COVID Restrictions

View COVID Travel Restrictions for Shannon, Ireland

Do I need a COVID test to fly to Shannon from St. Louis?

Information is based on travel restrictions from Lambert-St Louis to Shannon

Most visitors from Lambert-St Louis can enter Shannon without restrictions.

COVID-19 testing requirements
Visitors from Lambert-St Louis are not required to present a negative COVID-19 PCR test or antigen result upon entering Shannon.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Shannon.

Do I need a test to fly back to St. Louis from Shannon?

Returning to Lambert-St Louis from Shannon

COVID-19 testing requirements
Visitors from Shannon are not required to present a negative COVID-19 PCR test or antigen result upon entering Lambert-St Louis.

Quarantine requirements
Visitors from Shannon are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for Shannon, Ireland

Alternative routes for St. Louis to Shannon

See prices for flight routes from nearby airports that may be better suited for you.
Home Europe Ireland Shannon Cheap flights from St. Louis to Shannon