€239 Find Cheap Flights from St. Louis to Ireland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Ireland departing on 19/10. 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
1 adult, Economy

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Flight Deals

Best Ireland Flight Deals from St. Louis

Cheapest return prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin2 stops€436
Shannon
Shannon1 stop€639
Dublin
Dublin2 stops€436
Shannon
Shannon1 stop€639

Cheap Flights from St. Louis to Ireland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from St. Louis to Ireland 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 for you by selecting your travel dates on KAYAK.

Recent return flight deals from St. Louis to Ireland

Wed, 11 Feb - Wed, 18 Feb
United Airlines Logo
06:45 - 07:30STL-DUB
18h 45m2 stops
United Airlines Logo
09:00 - 16:40DUB-STL
37h 40m2 stops
€436United Airlines
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Mon, 9 Feb - Wed, 18 Feb
Air Canada Logo
15:15 - 07:10STL-DUB
33h 55m2 stops
Air Canada Logo
09:00 - 14:18DUB-STL
35h 18m2 stops
€437Air Canada
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Tue, 21 Oct - Wed, 5 Nov
Logo
16:05 - 08:15STL-DUB
10h 10m1 stop
Logo
05:10 - 13:55DUB-STL
14h 45m1 stop
€449
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Sun, 28 Dec - Fri, 9 Jan
Logo
08:05 - 07:10STL-DUB
17h 05m2 stops
Logo
05:10 - 13:55DUB-STL
14h 45m1 stop
€450
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Tue, 10 Feb - Tue, 17 Feb
British Airways Logo
18:21 - 14:20STL-DUB
13h 59m2 stops
British Airways Logo
10:55 - 21:44DUB-STL
16h 49m2 stops
€464British Airways
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Tue, 25 Nov - Tue, 2 Dec
Lufthansa Logo
12:31 - 08:10STL-DUB
13h 39m1 stop
Lufthansa Logo
17:10 - 13:55DUB-STL
26h 45m1 stop
€476Lufthansa
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Wed, 26 Nov - Tue, 2 Dec
Lufthansa Logo
18:43 - 16:35STL-DUB
15h 52m2 stops
Lufthansa Logo
17:10 - 13:55DUB-STL
26h 45m1 stop
€487Lufthansa
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Sun, 8 Feb - Thu, 19 Feb
Iberia Logo
14:40 - 08:55STL-DUB
36h 15m2 stops
Iberia Logo
09:40 - 20:18DUB-STL
40h 38m2 stops
€488Iberia
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Sun, 8 Feb - Sat, 21 Feb
Iberia Logo
14:40 - 08:55STL-DUB
36h 15m2 stops
Iberia Logo
11:30 - 20:18DUB-STL
14h 48m1 stop
€517Iberia
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Tue, 25 Nov - Tue, 2 Dec
British Airways Logo
14:17 - 09:35STL-DUB
13h 18m2 stops
British Airways Logo
08:50 - 19:27DUB-STL
16h 37m2 stops
€552British Airways
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Booking Insights

KAYAK's insights & trends for St. Louis to Ireland flights

Get data-powered insights and trends into flights from St. Louis to Ireland to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest month to fly from St. Louis to Ireland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Ireland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Ireland is February, when tickets cost €598 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is €1,100 and €930 respectively.

How far in advance should I book a flight from St. Louis to Ireland?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Ireland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from St. Louis to Ireland, you should book around 3 weeks before departure, which saves you about 29% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

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Good to know

Low seasonJanuary
Cheapest flight€239
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly and prices are also 0% lower on average.
Flight from St. Louis to Dublin

FAQs - booking Ireland flights

  • Can I get assistance with my luggage while at STL?

    If you have heavy luggage and need assistance in getting through the airport, STL is equipped with baggage carts that you can take advantage of to help you get through the airport. These baggage carts are found in terminals 1 and 2. Note that charges may apply.

  • What family services does STL offer?

    STL offers great family services that parents and guardians traveling with kids can utilize. The features an interactive kids’ play area located in terminals located near Gate3 where kids can expend some energy before boarding their flights. You can also have access to family restrooms found throughout the airport concourses and terminals.

  • Where can I get assistance at Ireland airports?

    DUB, ORK and SNN feature information desks where you can get particular information or any assistance that you need while at the airports. At DUB, you will find them in the Arrivals area terminal 1, while at ORK, they are located on the landside and at SNN near the front entrance.

  • Can I freshen up at Ireland airports?

    ORK doesn’t have any shower facilities, while DUB and SNN are equipped with excellent shower amenities that passengers can utilize on their arrival to freshen up. These shower facilities are located in the airport lounges.

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

    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 Ireland.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from St. Louis to Ireland with an airline and back with another airline.

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

    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 from St. Louis to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Ireland

  • If you are flying from St Louis to Ireland through St Louis Lambert International Airport (STL), ensure that you arrive at the airport at least 3 hours before your scheduled flight departure. This is to give you enough time to check in, go through security checks and arrive at your boarding gate on time. Nonetheless, if you are self-driving to the airport, it gives you ample time to park your car.
  • Dublin Airport (DUB) is the main airport in Ireland, serving major international and domestic flights. However, you can also land at Shannon Airport (SNN) or Cork Airport (ORK). ORK and DUB serve as the main hub of Ryanair and Aer Lingus airlines, while SNN serves as the hub of Aer Lingus.
  • Upon your arrival at any of the airports in Ireland, you will find car rental agencies like Budget, Sixt, Dollar, Europcar, Avis and Enterprise. At DUB, the rental agencies are found in terminals 1 and 2, while at SNN, they are found across the baggage claim. On the other hand, at ORK, these car rental companies are found at the Arrivals Hall.
  • There are no multiple flight options when flying from St Louis to Ireland. Passengers can only opt for multiple connecting flight services as this is a long flight duration. Delta Airlines, United Airlines and Air Canada are some of the carriers frequently operating along this route, offering two-stop flight options with layovers at Vancouver (YYZ), Washington Dulles (IAD), Newark Liberty (EWR), Atlanta (ATL) and Frankfurt (FRA) Airports.
  • The military USO Lounge at the STL offers a comfortable place for you and your family to wait for your flight if you are an active duty US military member. The lounge offers services such as sleeping areas with bunks and beds, showers, bathrooms, toiletries, children's play area, luggage storage, charging stations, assistance with local information and travel plans and snacks and beverages. They are located in terminals 1 and 2.

Reviews of the top airline flying from St. Louis to Ireland

 
Need help choosing which airline to fly with from St. Louis to Ireland? 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.
7.2
American AirlinesOverall score based on 10000 reviews
6.9Entertainment
7.2Comfort
7.5Boarding
6.5Food
8.0Crew
Airline reviews

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

6.0 GoodMitchell, Aug 2025CMH - ORD
Read more American Airlines reviews

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

Food was ok, but not as good as I have had before on AA.

No issues. They did change our gate FOUR times in about 30 minutes which was mildly annoying but the flight was fine.

Great flight. No issues at all. I still think boarding could be more efficient but otherwise, a good experience.

Pretty good. The food was just mediocre, the boarding and crew were good.

The comfort of the seats was great, the crew eased my child’s anxieties and the fact that I had full cans of my beverage choice was great.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

Sat on the ground in Cincinnati for 50 minutes before deplaning

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Everything you need to know for your flight from St. Louis to Ireland

Information on your arrival and departure airports

St. Louis (STL)

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