€277 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 22/2. 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, 0 bags

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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
Shannon1 stop€449
Dublin
Dublin1 stop€374
Shannon
Shannon1 stop€449

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

Thu, 4 Dec - Mon, 8 Dec
Austrian Airlines Logo
11:50 - 07:30STL-DUB
13h 40m1 stop
Austrian Airlines Logo
09:30 - 23:42DUB-STL
20h 12m1 stop
€374Austrian Airlines
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Fri, 5 Dec - Wed, 10 Dec
Lufthansa Logo
13:00 - 08:10STL-DUB
13h 10m1 stop
Lufthansa Logo
10:40 - 17:03DUB-STL
12h 23m1 stop
€375Lufthansa
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Tue, 5 May - Tue, 12 May
British Airways Logo
22:00 - 19:30STL-DUB
15h 30m1 stop
British Airways Logo
12:45 - 19:30DUB-STL
12h 45m1 stop
€392British Airways
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Fri, 5 Dec - Wed, 10 Dec
United Airlines Logo
15:19 - 08:10STL-DUB
10h 51m1 stop
United Airlines Logo
09:00 - 12:15DUB-STL
33h 15m2 stops
€395United Airlines
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Mon, 4 May - Mon, 11 May
British Airways Logo
07:50 - 09:40STL-DUB
19h 50m2 stops
British Airways Logo
20:55 - 19:30DUB-STL
28h 35m1 stop
€396British Airways
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Fri, 5 Dec - Wed, 10 Dec
United Airlines Logo
13:00 - 09:55STL-DUB
14h 55m2 stops
United Airlines Logo
09:00 - 21:58DUB-STL
42h 58m2 stops
€399United Airlines
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Fri, 5 Dec - Wed, 10 Dec
Multiple Airlines Logo
11:50 - 07:30STL-DUB
13h 40m1 stop
Multiple Airlines Logo
09:00 - 15:29DUB-STL
12h 29m1 stop
€404Multiple Airlines
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Tue, 5 May - Tue, 12 May
American Airlines Logo
22:00 - 20:35STL-SNN
16h 35m1 stop
American Airlines Logo
21:15 - 19:30SNN-STL
28h 15m1 stop
€449American Airlines
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Tue, 5 May - Tue, 12 May
American Airlines Logo
14:19 - 11:20STL-SNN
15h 01m2 stops
American Airlines Logo
21:15 - 19:30SNN-STL
28h 15m1 stop
€453American Airlines
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Fri, 8 May - Thu, 14 May
Multiple Airlines Logo
13:30 - 11:15STL-SNN
15h 45m2 stops
Multiple Airlines Logo
10:55 - 15:21SNN-STL
34h 26m2 stops
€599Multiple 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 €521 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is €1,113 and €921 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 15% 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 seasonNovember
Cheapest flight€277
Best time to beat the crowds (30% less expensive on average)
Most popular time to fly (4% more expensive 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 11047 reviews
6.9Entertainment
8.0Crew
6.4Food
7.2Comfort
7.5Boarding
Airline reviews

We were told the flight was delayed 5 times, then it was moved to the next day.

2.0 MediocreAnonymous, Nov 2025DCA - LAX
Read more American Airlines reviews

We were told the flight was delayed 5 times, then it was moved to the next day.

More choices on snacks. Built-in video screen to enjoy entertainment choices.

we landed at cmh ten minutes early but had to sit on tarmac for twenty minutes because a plane was at our gate despite the fact that 3 other gates were open.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

I have a gluten allergy so did have any food

I have a gluten allergy so didn't have any food

Loved the crew . Absolutely no complaints. Except for luggage lost

Everything was good The connects, with no blame to crew. Or pilots. I understand they are short staffed. Everything went well for me. I'll be using you guys again in May if not sooner.

this plane was really old, had exit row seats and tray was in arm of seat so super uncomfortable to use. another seat they could t even use the tray it was broke. seat i. front of me had duct tape on it cause seat was ripped open... this plane should either be updated or retired.

We were very rushed by a staff member at the gate when transferring from American Airlines to Fijian. Then the plane stayed put for ages anyhow! The plane was delayed and my bag sent to San Francisco instead of Fiji

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

Information on your arrival and departure airports

St. Louis (STL)