Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

€302 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 13/5. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Ireland

Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Best Ireland Flight Deals from St. Louis

Cheapest return prices found by our users on KAYAK in the last 72 hours

Dublin
Dublin1 stop€472
Shannon
Shannon1 stop€550
Milltown (Kerry)
Milltown (Kerry)2 stops€962

Cheap Flight Deals from St. Louis to Ireland (STL-IE0)

 
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.

Recent return flight deals from St. Louis to Ireland

Recommended return flight deals departing in the coming months from the most popular airlines that fly from St. Louis to Ireland.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
United Airlines Logo
13:30 - 07:45STL-DUB
12h 15m1 stop
United Airlines Logo
09:20 - 10:38DUB-STL
31h 18m2 stops
€472United Airlines
Find Deal
Mon, 11 Aug - Tue, 26 Aug
United Airlines Logo
07:30 - 07:45STL-DUB
18h 15m2 stops
United Airlines Logo
09:20 - 12:25DUB-STL
33h 05m2 stops
€476United Airlines
Find Deal
Mon, 11 Aug - Tue, 26 Aug
Air Canada Logo
13:30 - 07:45STL-DUB
12h 15m1 stop
Air Canada Logo
09:20 - 20:00DUB-STL
16h 40m1 stop
€484Air Canada
Find Deal
Mon, 11 Aug - Tue, 26 Aug
United Airlines Logo
13:30 - 07:45STL-DUB
12h 15m1 stop
United Airlines Logo
09:50 - 15:21DUB-STL
11h 31m1 stop
€489United Airlines
Find Deal
Mon, 11 Aug - Tue, 26 Aug
Air Canada Logo
16:00 - 08:15STL-DUB
10h 15m1 stop
Air Canada Logo
09:50 - 15:16DUB-STL
11h 26m1 stop
€557Air Canada
Find Deal
Tue, 12 Aug - Wed, 3 Sep
Iberia Logo
16:12 - 09:45STL-DUB
11h 33m1 stop
Iberia Logo
12:40 - 22:34DUB-STL
15h 54m1 stop
€579Iberia
Find Deal
Wed, 8 Oct - Wed, 15 Oct
Logo
07:25 - 07:20STL-DUB
17h 55m1 stop
Logo
09:20 - 19:57DUB-STL
16h 37m1 stop
€584
Find Deal
Tue, 2 Sep - Tue, 16 Sep
Logo
07:30 - 08:15STL-DUB
18h 45m1 stop
Logo
08:40 - 19:58DUB-STL
17h 18m2 stops
€633
Find Deal
Thu, 8 May - Thu, 15 May
Iberia Logo
12:27 - 09:45STL-DUB
15h 18m1 stop
Iberia Logo
13:45 - 23:49DUB-STL
16h 04m1 stop
€656Iberia
Find Deal
Mon, 28 Jul - Sun, 3 Aug
American Airlines Logo
19:30 - 15:50STL-SNN
14h 20m2 stops
American Airlines Logo
07:40 - 23:54SNN-STL
22h 14m2 stops
€838American Airlines
Find Deal
Fri, 16 May - Sat, 7 Jun

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 €580 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is €1,164 and €991 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 the flight from St. Louis to Ireland, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.
Find deals

Good to know

Low season

January

High season

September

Cheapest flight

€302
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly and prices are also 0% lower on average.
Flight from St. Louis to Shannon

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.

See more FAQs

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.
See more tips

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
7.5Boarding
8.0Crew
7.2Comfort
6.5Food
Airline reviews

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

2.0 MediocreScott, Apr 2025LGA - RDU
Read more American Airlines reviews

There were five broken seats on the plane. The crew was very rude in telling people they had to get off the plane and get a flight the next day. No call for volunteers, but telling people they had to get off. One woman was flying with her elderly mother and daughter and was told she had to leave or all three had to leave. Fortunately, a volunteer offered to stay. The situation was handled poorly.

The flight to Tokyo AA61 took off about two hours late, but then had to turn back. By that time the crew had to be replaced. Then they kept promising to take off in an hour, then in 3, then switch to the next day.

British Airways staff are very polite and willing to help.

Any sort of gluten free snack option would be nice

They lost my luggage and it didn’t get delivered until the next day.

Would have thought that they would gas up plane before everyone got on board

3 hours late. Not even water offered on a 2.25 hour flight.

I had a carry on and a personal bag. I put my personal item under my seat and on way to the seat I put my bag up. I usually close my eyes and rest as I was on call for last 36 hours. I heard very loud announcements that someone needs to identify their bag. Pretty sure it was not mine until the hostess pointed out my jacket details attached to the bag. I asked why she got my bag out. I got berated and did not want to create a scene. But this person needs to be talked to.

Everyone was nice. It was on time and the food was. Airplane food, but not horrible

Terrible. The flight was delayed two hours due to weather. Then when we got on the plane, the first pilot ended up timing out and we had to wait for a second pilot. Second pile came on board and we tax it out. Had to return back to the gate because of an unruly passenger. Then the copilot timed out. Had to wait for new copilot. Also had to wait for maintenance to check for fuel. Then found out the second pilot timed out and we had to wait for a third pilot. Was ready to go and then needed maintenance again for another issue. In the end, it was 2 o’clock in the morning when they announced that the flight couldn’t go because the third pilot and the second copilot had timed out.

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

Information on your arrival and departure airports

St. Louis (STL)

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.