€351 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 5/11. 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
Dublin1 stop€374
Shannon
Shannon2 stops€503
Milltown (Kerry)
Milltown (Kerry)3 stops€1,777
Dublin
Dublin1 stop€374
Shannon
Shannon2 stops€503
Milltown (Kerry)
Milltown (Kerry)3 stops€1,777

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, 3 Dec - Wed, 24 Dec
KLM Logo
16:32 - 08:45STL-DUB
10h 13m1 stop
KLM Logo
09:45 - 16:28DUB-STL
12h 43m1 stop
€374KLM
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Wed, 3 Dec - Wed, 10 Dec
KLM Logo
16:32 - 08:45STL-DUB
10h 13m1 stop
KLM Logo
11:30 - 21:57DUB-STL
16h 27m2 stops
€377KLM
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Wed, 3 Dec - Thu, 11 Dec
Multiple Airlines Logo
16:32 - 08:45STL-DUB
10h 13m1 stop
Multiple Airlines Logo
06:00 - 17:10DUB-STL
17h 10m2 stops
€389Multiple Airlines
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Wed, 3 Dec - Thu, 11 Dec
Delta Logo
06:39 - 08:45STL-DUB
20h 06m2 stops
Delta Logo
08:45 - 23:42DUB-STL
20h 57m2 stops
€393Delta
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Wed, 3 Dec - Wed, 24 Dec
Delta Logo
06:39 - 08:45STL-DUB
20h 06m2 stops
Delta Logo
05:55 - 23:38DUB-STL
23h 43m2 stops
€394Delta
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Sat, 31 Jan - Thu, 12 Feb
Multiple Airlines Logo
18:06 - 07:10STL-DUB
31h 04m2 stops
Multiple Airlines Logo
09:20 - 15:29DUB-STL
36h 09m2 stops
€413Multiple Airlines
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Sat, 31 Jan - Thu, 12 Feb
United Airlines Logo
16:49 - 07:10STL-DUB
32h 21m2 stops
United Airlines Logo
10:40 - 16:02DUB-STL
11h 22m1 stop
€422United Airlines
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Fri, 5 Dec - Fri, 12 Dec
United Airlines Logo
08:00 - 08:10STL-DUB
18h 10m1 stop
United Airlines Logo
09:00 - 15:29DUB-STL
12h 29m1 stop
€424United Airlines
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Wed, 25 Mar - Sat, 4 Apr
American Airlines Logo
14:36 - 11:30STL-SNN
15h 54m2 stops
American Airlines Logo
07:40 - 19:02SNN-STL
17h 22m2 stops
€503American Airlines
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Fri, 27 Mar - Tue, 31 Mar
American Airlines Logo
09:28 - 06:20STL-SNN
15h 52m1 stop
American Airlines Logo
07:40 - 21:48SNN-STL
20h 08m2 stops
€769American Airlines
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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 November, when tickets cost €480 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is €1,114 and €929 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 25% 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 seasonFebruary
Cheapest flight€351
Best time to beat the crowds (14% 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 11029 reviews
6.4Food
8.0Crew
6.9Entertainment
7.2Comfort
7.5Boarding
Airline reviews

Disliked having to wait a little longer to disembark from the plan when we landed in London

10.0 ExcellentLESTER, Oct 2025JFK - LHR
Read more American Airlines reviews

Disliked having to wait a little longer to disembark from the plan when we landed in London

Typically flights with AA are good. The staff are pleasant, welcoming, and efficient.

A couple ladies from the crew were so rude and nasty. Thought they were mad at having to be there especially if you asked a question. This will make me think twice next time if I book a flight with you.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

Poor seat in rear of aircraft Food at Admiral’s Club Terminal D at DFW inedible

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Flight was delayed because of a bird strike. They had another plane available within 45 minutes.

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

Flight attendants on this flight were very attentive and friendly

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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