$390 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 6/10. 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, 0 bags

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Cheap Flights from St. Louis to Ireland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin1 stop$662
Shannon
Shannon1 stop$708
Cork
Cork2 stops$855
Dublin
Dublin1 stop$662
Shannon
Shannon1 stop$708
Cork
Cork2 stops$855

Book Cheap St. Louis to Ireland Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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 round-trip flight deals from St. Louis to Ireland

Wed, Sep 9 - Tue, Sep 15
Multiple Airlines Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Multiple Airlines Logo
6:00 am - 1:25 pm
DUB
-
STL
13h 25m
1 stop
$662Multiple Airlines
Wed, Sep 9 - Tue, Sep 15
Multiple Airlines Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Multiple Airlines Logo
6:00 am - 1:25 pm
DUB
-
STL
13h 25m
1 stop
$664Multiple Airlines
Wed, Sep 9 - Tue, Sep 15
Multiple Airlines Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Multiple Airlines Logo
6:00 am - 1:25 pm
DUB
-
STL
13h 25m
1 stop
$667Multiple Airlines
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
United Airlines Logo
9:50 am - 12:13 pm
DUB
-
STL
32h 23m
2 stops
$683United Airlines
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
5:00 am - 7:45 am
STL
-
DUB
20h 45m
2 stops
United Airlines Logo
9:50 am - 12:13 pm
DUB
-
STL
32h 23m
2 stops
$687United Airlines
Sun, Aug 23 - Wed, Sep 9
Delta Logo
10:45 am - 2:40 pm
STL
-
ORK
21h 55m
2 stops
Delta Logo
6:15 am - 4:55 pm
ORK
-
STL
16h 40m
2 stops
$855Delta
Sun, Aug 23 - Wed, Sep 9
Lufthansa Logo
3:30 pm - 4:30 pm
STL
-
ORK
19h 00m
1 stop
Lufthansa Logo
5:05 pm - 11:00 pm
ORK
-
STL
35h 55m
2 stops
$938Lufthansa
Sun, Aug 23 - Wed, Sep 9
Lufthansa Logo
3:30 pm - 4:30 pm
STL
-
ORK
19h 00m
1 stop
Lufthansa Logo
5:05 pm - 9:22 pm
ORK
-
STL
58h 17m
2 stops
$964Lufthansa
Sun, Aug 23 - Wed, Sep 9
British Airways Logo
9:40 pm - 3:10 pm
STL
-
ORK
11h 30m
1 stop
British Airways Logo
11:25 am - 7:30 pm
ORK
-
STL
14h 05m
1 stop
$986British Airways
Sun, Aug 23 - Wed, Sep 9
British Airways Logo
9:40 pm - 7:50 pm
STL
-
ORK
16h 10m
1 stop
British Airways Logo
7:10 am - 6:58 pm
ORK
-
STL
17h 48m
2 stops
$996British Airways
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 $385 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $711 and $482 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 2 weeks before departure, which saves you about 68% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$390
Best time to beat the crowds but there is an average 2% increase in price.
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 travelers 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 round-trip 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 5 airlines serving 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.
7.9
DeltaOverall score based on 8468 reviews
7.8Entertainment
8.5Crew
7.2Food
8.1Boarding
7.9Comfort
Airline reviews

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

6.0 GoodSilvestre, Apr 2026
MCO - GRU
Read more Delta reviews

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

Some crew were unfriendly or in some cases just straight up rude.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

Satin first class and absolutely no snacks are offered. Surface was awful.

This was the smoothest flight I've ever taken with any airline, including Aer Lingus. Typically, there are moments when I feel afraid, but from take off (miraculously seamless!) to cruise, to landing this was a perfect flight. Thank you!

Poor. Plane left EWR late hence missed connecting flight in Dublin. No pro active info from flight staff on connection, only when probed a couple of lies on where we would dock, and on lilelyhood catching connecting flight. Lies as they will have known our EWR-DUB would be parked furthest away from the transit spit - lying it would be next to the AMS flight.

The seat area was way too compact. The person in front reclined, and the TV screen was right in my face. There was a metal box secured to the floor in my foot area, further limiting space. Food was OK. The last service was provided too late in the flight, so the crew was rushing at the end. The ticket counter in the Naples airport was extremely slow. The staff on the flight was friendly.

delayed flight stayed whole night at washington Dallas airport at seats , uncomfortable . i am senior citizen , very tired , worst travel.

I heard that the pilots were actually leprechauns, but I was not able to confirm. Can you please provide documentation if this is true?

The check in process at the front desk felt slow and it was frustrating that we could not check in online. Everything about the actual flight was great, including very kind flight attendants and a nice larger bathroom. Only thing is that it was very cold in the plane!

I flew economy class. Seats were very good and the crew was excellent

I had a great experience. I would definitely use them again

The pre-check (passport control) for all US flights from Dublin airport is brilliant, meaning these flights come into the domestic airport in the US - it was so quick and easy getting to my hotel once we landed. The plane itself was great, staff were lovely and food was fine.

I would like a refund for the extra cost the seat I paid for. An oversized person sat next to me and I couldn’t fit on my seat and had to move to another seat.

Boarding gate at LAX was too crowded—two gates next to one another

The flight was delayed about an hour for a maintenance specialist to approve the maintenance repair

This flight was delayed but it worked in my favor because my Atlanta to Dallas flight was delayed.

This was a hard flight. 3 delays out of OKC (1 on the Tarmac). Delay in Atlanta coming to Dallas. total travel time was the equivalent of driving from OKC to Atlanta.

Like: flights are on time, good boarding process Can improve: planes are old, improve entertainment and make space more comfortable

Had to wait for a gate for a long time, then waited on the run way for a long time before leaving. The actual flights part was good.

The airplane was an old model, the overhead didn’t have enough room for people’s items and made boarding and boarding disappointing and stressful. Crew allowed passengers to bring more than the permitted baggage sizes.

Flying in the United States with the major airlines has become so underwhelming. A 2-3hr flight in most other parts of the world with the major carriers of the area comes with newer, CLEANER aircraft and significantly better in flight service in terms of both staff attitude and a actual meal service.

On time departure and early arrival. Flight attendant very nice.

shittiest airline in the hemisphere. To improve - start thinking you're flying people, not cattle

Easy boarding, inflight refreshments came on time and comfortable seat

It was good that our flight left early. It was a nice smooth flight and landing.

All good……but luggage didn’t make it on the airplane. Had to wait 3 days. Was a bummer.

Small suitcase used for carryon the last time was refused by boarding crew this time. Appears to be at the discretion and mood of the person on the day. Flight was only half booked, there would have been no problem with space.

It was a problem because there was a delay where we sat before taking off from newark,then when landed in Toronto we sat on tarmac and they wouldn't let us out for a long period of time. When we finally were released to the airport in Toronto the attendant scanned our boarding pass that we were here for our connection to Brazil. We ran all the way to the gate and they said at the gate the door is shut so we can not let you on the plane. We explained that we were checked in by the attendant when we arrived at Toronto airport to go to Brazil and they should not have shut the door. We were ignored at the gate

Flight home was delayed multiple times, did not get home until 2am

the check-in lady at ORD was extremely rude and unprofessional. very disappointed as it was supposed to be a celebration for my wife's birthday and it really put a damper on things. if i wanted to be treated like trash, i would have flown Economy! (as opposed to business class)

My original flight was cancelled and then rebooked four hours later on a recovery flight, but I was checked in as stanby and had no seats so as a family of four we were concerned about not being seated altogether. Our flight then got delayed by another 1.5 hours and when seats were assigned at the gate, three of the four of us were together and we could get my wife closer, they offered no assistance.

I bought a ticket from Kayak. When I got to the airport, the was no ticket. I had to pay 5X to get to my destination. No response received from Kayak. I will NEVER use them again.

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

Information on your arrival and departure airports