Which airports can I use when flying from St. Louis to Shannon?

Flights from St. Louis to Shannon usually depart from Lambert-St Louis (STL) and arrive at Shannon (SNN).

What cabin classes can I book on flights from St. Louis to Shannon?

Two cabin classes are available on flights from St. Louis to Shannon: • Economy Class • Business Class

Which airports do connecting flights from St. Louis to Shannon pass through?

One-stop flights from St. Louis to Shannon most commonly connect through: • Chicago O'Hare Intl (ORD) - 87% of one-stop connections • Newark (EWR) - 11% of one-stop connections • Boston Logan Intl (BOS) - 2% of one-stop connections Chicago O'Hare Intl (ORD) handles the largest share of one-stop connections on this route.

Can I save money by using flexible dates for flights from St. Louis to Shannon?

Yes. Being flexible with your travel dates can save you up to 28% on the St. Louis to Shannon route. Tuesday is the cheapest departure day at $746 round-trip on average, while Monday is the most expensive at $1,027, a difference of $281. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

How long is a flight from St. Louis to Shannon?

A nonstop flight from St. Louis to Shannon takes 0h 00m, covering 3,824 miles.

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

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

How are flight prices from St. Louis to Shannon looking right now?

One-way fares from St. Louis to Shannon are currently lower than usual. Average one-way flight prices are about $585, which is 19% below the typical average for this route.

How much time can I save by choosing a different layover airport from St. Louis to Shannon?

Flying via Chicago O'Hare Intl (ORD) gives the shortest average 1-stop total travel time at 11h 26m, compared with 12h 06m via Newark (EWR) and 19h 34m via Boston Logan Intl (BOS).

What is the time difference between St. Louis and Shannon?

Shannon is 6 hours ahead of St. Louis (Irish Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Shannon Airport (SNN)?

Shannon Airport (SNN) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include: • Budget • Sixt • Europcar • Thrifty • Easirent

How much should I expect to pay for a St. Louis to Shannon flight?

Round-trip flights from St. Louis to Shannon range from $738 to $1,027, with an average of $880 over the past 12 months. Anything below $738 counts as a good deal.

What is the cheapest airline to fly from St. Louis to Shannon?

United Airlines ($619) and British Airways ($766) are the cheapest airlines to fly round-trip from St. Louis to Shannon according to KAYAK data over the last 5 days.

What is the most popular layover airport when flying from St. Louis to Shannon?

Chicago O'Hare Intl (ORD) is the most popular layover for the St. Louis to Shannon route. 87% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via ORD.

What is the cheapest layover airport when flying from St. Louis to Shannon?

Flights via Chicago O'Hare Intl (ORD) offer the most affordable fares, with an average round-trip price of $883. Based on KAYAK data over the past 3 months.

When flying from St. Louis to Shannon which airport offers the shortest layover?

Chicago O'Hare Intl (ORD) had the shortest average connection time for St. Louis to Shannon layovers at 392 minutes over the past 3 months.

$600 CHEAP FLIGHTS from St. Louis to Shannon (STL - SNN)

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$619

Typical prices: $738-$1,027

United Airlines

Sat 10/13Sat 10/20

STL - SNN • 1 stop

Cheapest one-way

$484

Typical prices: $434-$1,042

Multiple Airlines

Mon 3/12

STL - SNN • 2 stops

Nonstop flights

Not available

There are currently no direct flights between St. Louis and Shannon. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

December

Cheapest • 45% price drop

August

Most popular

Good to know

Top layover airports

Chicago O'Hare Intl (ORD)

Cheapest • Avg $883 (round-trip)

Newark (EWR)

Shortest trip • 12h 06m (one-way)

Insights

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We hope you love your trip to Shannon!

Flight Deals

Cheap Flights from St. Louis to Shannon (STL-SNN)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from St. Louis to Shannon

Tue, Oct 13 - Tue, Oct 20

9:30 am - 10:15 amSTL Lambert-St Louis-SNN Shannon

18h 45m1 stop Newark

12:30 pm - 9:09 pmSNN Shannon-STL Lambert-St Louis

14h 39m1 stop Newark

$619United Airlines

Tue, Oct 13 - Tue, Oct 20

11:35 am - 10:15 amSTL Lambert-St Louis-SNN Shannon

16h 40m2 stops Chicago O'Hare Intl Newark

12:30 pm - 11:44 pmSNN Shannon-STL Lambert-St Louis

17h 14m2 stops Newark Denver Intl

$624United Airlines

Tue, Oct 13 - Tue, Oct 20

8:35 am - 10:15 amSTL Lambert-St Louis-SNN Shannon

19h 40m2 stops Houston George Bush Intcntl Newark

12:30 pm - 9:09 pmSNN Shannon-STL Lambert-St Louis

14h 39m1 stop Newark

$624United Airlines

Tue, Oct 13 - Tue, Oct 20

1:29 pm - 10:15 amSTL Lambert-St Louis-SNN Shannon

14h 46m2 stops Chicago O'Hare Intl Newark

12:30 pm - 12:13 pmSNN Shannon-STL Lambert-St Louis

29h 43m3 stops Newark Houston George Bush Intcntl Chicago O'Hare Intl

$624United Airlines

Thu, Oct 1 - Wed, Oct 7

5:10 am - 10:15 amSTL Lambert-St Louis-SNN Shannon

47h 05m2 stops Denver Intl Newark

12:30 pm - 9:09 pmSNN Shannon-STL Lambert-St Louis

14h 39m1 stop Newark

$688United Airlines

Thu, Oct 1 - Wed, Oct 7

5:10 am - 10:15 amSTL Lambert-St Louis-SNN Shannon

47h 05m2 stops Denver Intl Newark

12:30 pm - 3:43 pmSNN Shannon-STL Lambert-St Louis

33h 13m2 stops Newark Chicago O'Hare Intl

$732United Airlines

Thu, Oct 8 - Thu, Oct 15

7:30 am - 10:15 amSTL Lambert-St Louis-SNN Shannon

20h 45m1 stop Newark

12:30 pm - 9:09 pmSNN Shannon-STL Lambert-St Louis

14h 39m1 stop Newark

$754United Airlines

Thu, Oct 8 - Thu, Oct 15

7:30 am - 10:15 amSTL Lambert-St Louis-SNN Shannon

20h 45m1 stop Newark

12:30 pm - 12:13 pmSNN Shannon-STL Lambert-St Louis

29h 43m2 stops Newark Chicago O'Hare Intl

$759United Airlines

Mon, Oct 26 - Mon, Nov 2

5:27 pm - 7:25 pmSTL Lambert-St Louis-SNN Shannon

20h 58m2 stops Chicago O'Hare Intl London Heathrow

8:05 pm - 9:57 pmSNN Shannon-STL Lambert-St Louis

31h 52m2 stops London Heathrow Charlotte Douglas

$766British Airways

Sat, Oct 3 - Sat, Oct 31

5:18 pm - 11:20 amSTL Lambert-St Louis-SNN Shannon

36h 02m2 stops Chicago O'Hare Intl London Heathrow

5:15 pm - 11:15 pmSNN Shannon-STL Lambert-St Louis

35h 00m2 stops London Heathrow Chicago O'Hare Intl

$828British Airways