Cheap flights from St. Louis (STL) to Shannon (SNN) from $1,124

This is the cheapest one-way flight price, found on 6/6. Prices may vary by date and flight preferences.
STL — SNN
Jun 13 — Jun 201

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 2023: compare St. Louis to Shannon flight prices with the expected peak season, weather and rainfall in Shannon.

Popular in

July

Cheapest in

October

Average price

$1,111

Round-trip from

$542
High demand for flights, 29% potential price rise
Best time to find cheap flights, 23% potential price drop
Average for round-trip flights in June 2023
From Lambert-St Louis to Shannon

STL - SNN

Price

$542 - $1,308

SNN

Temperature

42.8 - 60.8 °F

SNN

Rainfall

2.3 - 4.1 inches

Cheap flights from St. Louis to Shannon in June, July 2023

The best prices found for STL to SNN flights for June, July
Scroll through some of the best deals on flights from St. Louis to Shannon in 2023. Check back in a little while for more flight options.

St. Louis to Shannon 2023 flight deals

Cheap flights to Shannon from St. Louis found for this year
Scroll through some of the best deals on flights from St. Louis to Shannon in 2023. Check back in a little while for more flight options.

Cheap United Airlines flights from St. Louis to Shannon

Find some of the cheapest United Airlines flights traveling from St. Louis to Shannon. Come back soon if you're not finding the exact deal you're looking for.

Cheap Air Canada flights from St. Louis to Shannon

To aid your search, here are some of the cheapest Air Canada flights we've found from St. Louis to Shannon. Deals are refreshing constantly so come back soon for more options.

One-way flights to Shannon from St. Louis

The cheapest one-way flights from St. Louis to Shannon
Take a look at some of the best available options we've come across on one-way flights from St. Louis to Shannon. For those needing a return trip from St. Louis, there is a search form available above.

Find flights from St. Louis to Shannon within your budget

Use the slider to find flights from St. Louis to Shannon that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$1,124 - $4,402

Route

Depart

Return

Price

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 7/12

1 stop15h 25m

Shannon

Fri 7/28

1 stop12h 06m

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 7/12

2 stops19h 15m

Shannon

Fri 7/28

2 stops30h 37m

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 7/12

2 stops17h 35m

Shannon

Fri 7/28

3 stops19h 37m

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 8/26

2 stops35h 25m

Shannon

Thu 8/31

2 stops25h 31m

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 8/26

1 stop31h 55m

Shannon

Thu 8/31

2 stops17h 45m

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 8/26

2 stops35h 25m

Shannon

Thu 8/31

3 stops19h 37m

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 7/12

3 stops16h 05m

Shannon

Fri 7/28

3 stops19h 37m

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 8/26

1 stop10h 57m

Shannon

Thu 8/31

1 stop15h 38m

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 8/26

3 stops16h 05m

Shannon

Thu 8/31

3 stops19h 37m

Flights are sorted by cheapest first

Deals found on 6/6

Reviews of airlines servicing Shannon

Get a feel of what it's like to fly with United Airlines and Air Canada from St. Louis to Shannon by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.6
Good
1,572 reviews

Entertainment

7.1

Overall

7.6

Comfort

7.4

Boarding

7.8

Crew

8.2

Food

6.8

Reviews

1 / 10

Very prompt departure, and arrival right on time. Flight crews are very friendly. Plane is clean, seats are comfortable.

United Airlines
7.6
Good
1,572 reviews
United Airlines
7.6
Good
1,572 reviews

Entertainment

7.1

Overall

7.6

Comfort

7.4

Boarding

7.8

Crew

8.2

Food

6.8

Reviews

1 / 10

Very prompt departure, and arrival right on time. Flight crews are very friendly. Plane is clean, seats are comfortable.

Lufthansa
6.8
Okay
1,199 reviews
United Airlines
7.6
Good
1,572 reviews

Entertainment

7.1

Overall

7.6

Comfort

7.4

Boarding

7.8

Crew

8.2

Food

6.8

Reviews

1 / 10

Very prompt departure, and arrival right on time. Flight crews are very friendly. Plane is clean, seats are comfortable.

Air Canada
6.7
Okay
935 reviews
United Airlines
7.6
Good
1,572 reviews

Entertainment

7.1

Overall

7.6

Comfort

7.4

Boarding

7.8

Crew

8.2

Food

6.8

Reviews

1 / 10

Very prompt departure, and arrival right on time. Flight crews are very friendly. Plane is clean, seats are comfortable.

Related info for your journey

Useful info, stats and facts about St. Louis to Shannon flights.

Top 4 airlines flying from St. Louis to Shannon

The chart below displays the airlines Cheapflights users traveling from St. Louis to Shannon choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
American AirlinesCheapest$615Average$782FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
British AirwaysCheapest$754Average$1,419FlexibilityNo cancel feeOn-time70%COVID-19 safety
Search British Airways flights
United AirlinesCheapest$761Average$1,306FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
LufthansaCheapest$882Average$1,073FlexibilityNo cancel feeOn-time76%COVID-19 safety
Search Lufthansa flights
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