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STL - SNN

Find cheap flights from St. Louis to Shannon from $822

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Shannon departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mon 6/3
Mon 6/10

Search hundreds of travel sites at once for deals on flights to Shannon

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Shannon, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Shannon, as well as popular online travel agencies
In the last 7 days travelers have searched 43,369,418 times on KAYAK, and here is why:

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Bundle and saveSave money when you bundle your flight + hotel.

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Shannon that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
11:10 am - 7:30 amSTL-SNN
14h 20m1 stop
9:30 am - 2:53 pmSNN-STL
11h 23m1 stop
$822United Airlines
Find Deal
Wed, Sep 4 - Wed, Sep 11
11:10 am - 7:30 amSTL-SNN
14h 20m1 stop
9:30 am - 10:56 pmSNN-STL
19h 26m2 stops
$827United Airlines
Find Deal
Wed, Sep 4 - Wed, Sep 11
6:20 am - 10:30 amSTL-SNN
22h 10m2 stops
9:30 am - 12:49 pmSNN-STL
33h 19m2 stops
$910United Airlines
Find Deal
Mon, Jul 15 - Wed, Jul 31
5:31 pm - 7:30 amSTL-SNN
31h 59m1 stop
9:30 am - 3:41 pmSNN-STL
12h 11m1 stop
$993United Airlines
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Sat, Jun 8 - Wed, Jun 26
4:20 pm - 4:10 pmSTL-SNN
17h 50m2 stops
9:25 pm - 3:28 pmSNN-STL
24h 03m2 stops
$1,039American Airlines
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Mon, May 20 - Thu, May 30
5:32 pm - 7:30 amSTL-SNN
31h 58m2 stops
5:30 pm - 9:05 pmSNN-STL
33h 35m2 stops
$1,094
Find Deal
Sat, Aug 31 - Sat, Sep 7
5:20 pm - 7:30 amSTL-SNN
32h 10m1 stop
5:30 pm - 9:05 pmSNN-STL
33h 35m2 stops
$1,096
Find Deal
Sat, Aug 31 - Sat, Sep 7
6:00 am - 10:50 amSTL-SNN
22h 50m2 stops
12:50 pm - 9:17 pmSNN-STL
14h 27m2 stops
$1,202Delta
Find Deal
Mon, Jul 15 - Sat, Jul 27
4:20 pm - 4:10 pmSTL-SNN
17h 50m2 stops
7:40 am - 7:30 pmSNN-STL
17h 50m2 stops
$1,210American Airlines
Find Deal
Tue, May 14 - Tue, May 21
12:20 pm - 10:30 amSTL-SNN
16h 10m1 stop
12:30 pm - 9:54 pmSNN-STL
15h 24m1 stop
$1,967Lufthansa
Find Deal
Tue, May 14 - Tue, May 21

Good to know

Cheapest flight

$822
Flight from St. Louis to Shannon

When to book flights from St. Louis to Shannon

Are your dates flexible? Find out the best times to travel from St. Louis to Shannon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Shannon

  • What is the cheapest flight from St. Louis to Shannon?

    In the last 3 days, the lowest price for a flight from St. Louis to Shannon was $822 for a round-trip ticket.

  • Do I need a passport to fly between St. Louis and Shannon?

    Yes, you'll most likely have to show a valid passport before boarding the plane in St. Louis and on arrival in Shannon.

  • Which aircraft models fly most regularly from St. Louis to Shannon?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Shannon?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between St. Louis and Shannon, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Shannon, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Shannon are United Airlines and American Airlines. With an average price for the route of $1,123 and an overall rating of 7.3, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $877 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from St. Louis to Shannon?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Shannon.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Shannon?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Shannon from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Shannon?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Shannon with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and SNN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Shannon?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Shannon from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 3 airlines serving from St. Louis to Shannon

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Shannon. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Shannon? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
United AirlinesOverall score based on 11125 reviews
7.7Boarding
7.1Entertainment
7.2Comfort
8.1Crew
6.7Food
Airline reviews

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

2.0 Mediocretimothy, May 2024SBA - DEN
Read more about United Airlines reviews

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Food was terrible Not many options Stewards dont care Delay

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American cancelled our flight home. Zero option for hotel, alternative transportation and took 3 hours to find our bags so we could take a 3 hour UBER ride home on our dime. Never flying AA again.

They gave my seat away although it was a connecting flight with them and the flight was a bit delayed.

Flight was cancelled had to move to another gate late again no internet paid for the month and never can use it waste of money

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

WiFi connected but only let you go to the AA website, not even text messaging worked.

Too bad that first class seats do not recline significantly causing discomfort

I think the seats on some of their planes are uncomfortable. You can be ok on a short flight of two hours but no more than that. The delays, and also the refreshments on the plane were not enough.

Flight delayed over an over all day until it cancelled at 1:30am. Would not repeatedly delay that late. Offer hotel rooms and rebook early. Very difficult for families with small children

The Lufthansa part was wonderful. The short connection flight was not.

German crew were very kind. Food was okay but can be better, especially bread was not good, Garbage collection was very poor.

Awful Terrible staff poor communication Flight delayed for an hour with no apology or explanation and no help re missing connecting flight. Resulted in a 7 hour layover at Munich waiting for another connecting flight. Only 15 euros refreshment voucher given. Will not fly Lufthansa again

Both flights were late for what appeared to be the airline’s not having the planes ready. Arrived over 6 hours late.

It was a busy flight and all the crew were very helpful and gracious

Seats were not the most comfortable and food options weren’t great but overall but everything else was excellent

Check-in very easy and smooth. Plane and crew were nice. Seat open next to me created more space. Food was fair but plentiful. Lots of movies and I was able to sleep some on the way to Munich. Very tight connection, about an hour. Fast through passport control and a bit of a walk to last G terminal gate but I made my connection to Palma. Unfortunately, my luggage did not make it. It is now almost 24 hours since I anded and still NO luggage. I know it landed last night on another flight. Local delivery should be today to my hotel in Palma but nothing yet. I asked about the tight connection when I checked in and was assured they would get my luggage to the connecting flight. Very disappointing it missed my flight but more disappointing that it has taken so long to arrive. Failure on the airlines and service to get my luggage to date.

I wish the flight attendant was a little bit kinder

The food wasn’t great and it would be nice if the airlines showed documentaries about the countries we are flying into.

Disappointed everytime. The app doesn't load the boarding passes. They have lots of agent that seem to be busy doing nothing with a long line waiting to get paper boarding passes. Food choices are poor. Entertainment is less than entertaining.

St. Louis - Shannon Flights

Departure:

St. Louis (STL)United States

Destination:

Shannon (SNN)Ireland

Cabin classes:

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