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Cheap flights from St. Louis to Ireland from $203

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Ireland departing on 4/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Ireland

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
12:01 pm - 10:15 am
STL
-
DUB
16h 14m
2 stops
British Airways Logo
7:35 am - 9:12 pm
DUB
-
STL
19h 37m
2 stops
$405British Airways
dom., feb. 1 - vie., feb. 13
British Airways Logo
12:27 pm - 10:15 am
STL
-
DUB
15h 48m
2 stops
British Airways Logo
1:30 pm - 7:30 pm
DUB
-
STL
12h 00m
1 stop
$406British Airways
mar., abr. 14 - mié., abr. 22
British Airways Logo
1:29 pm - 10:15 am
STL
-
DUB
14h 46m
2 stops
British Airways Logo
12:00 pm - 7:30 pm
DUB
-
STL
13h 30m
1 stop
$407British Airways
mar., abr. 14 - mié., abr. 22
United Airlines Logo
2:20 pm - 8:15 am
STL
-
DUB
11h 55m
1 stop
United Airlines Logo
9:50 am - 10:26 pm
DUB
-
STL
42h 36m
2 stops
$415United Airlines
lun., may. 4 - mar., may. 12
United Airlines Logo
7:45 am - 7:20 am
STL
-
DUB
17h 35m
2 stops
United Airlines Logo
9:50 am - 10:26 pm
DUB
-
STL
42h 36m
2 stops
$416United Airlines
lun., may. 4 - mar., may. 12
American Airlines Logo
11:59 am - 11:10 am
STL
-
ORK
17h 11m
2 stops
American Airlines Logo
7:40 am - 9:12 pm
ORK
-
STL
19h 32m
2 stops
$461American Airlines
vie., feb. 27 - vie., mar. 6
American Airlines Logo
6:36 pm - 4:45 pm
STL
-
SNN
16h 09m
2 stops
American Airlines Logo
2:45 pm - 11:29 am
SNN
-
STL
26h 44m
1 stop
$484American Airlines
jue., feb. 26 - jue., mar. 5
Multiple Airlines Logo
4:05 pm - 3:25 pm
STL
-
ORK
17h 20m
2 stops
Multiple Airlines Logo
7:40 am - 9:07 pm
ORK
-
STL
19h 27m
3 stops
$698Multiple Airlines
vie., feb. 27 - vie., mar. 6
Lufthansa Logo
3:30 pm - 4:30 pm
STL
-
ORK
19h 00m
1 stop
Lufthansa Logo
5:05 pm - 1:25 pm
ORK
-
STL
26h 20m
1 stop
$710Lufthansa
mié., jul. 8 - jue., jul. 23
Multiple Airlines Logo
10:00 am - 11:10 am
STL
-
ORK
20h 10m
3 stops
Multiple Airlines Logo
8:30 pm - 3:24 pm
ORK
-
STL
24h 54m
2 stops
$742Multiple Airlines
mié., mar. 25 - sáb., abr. 4

British Airways flights from St. Louis to Ireland

Our best British Airways deals on St. Louis to Ireland flight tickets
British Airways
Feb 1
STL12:01 pmLambert-St Louis
16h 14m
2 stops
DUB10:15 amDublin
Feb 13
DUB7:35 amDublin
19h 37m
2 stops
STL9:12 pmLambert-St Louis
$405
British Airways
Apr 14
STL12:27 pmLambert-St Louis
15h 48m
2 stops
DUB10:15 amDublin
Apr 22
DUB1:30 pmDublin
12h 00m
1 stop
STL7:30 pmLambert-St Louis
$406
British Airways
Apr 14
STL1:29 pmLambert-St Louis
14h 46m
2 stops
DUB10:15 amDublin
Apr 22
DUB12:00 pmDublin
13h 30m
1 stop
STL7:30 pmLambert-St Louis
$407

Lufthansa flights from St. Louis to Ireland

Our best Lufthansa deals on St. Louis to Ireland flight tickets
Lufthansa
Apr 14
STL8:30 amLambert-St Louis
16h 50m
1 stop
DUB7:20 amDublin
Apr 21
DUB9:50 amDublin
11h 34m
1 stop
STL3:24 pmLambert-St Louis
$423
Lufthansa
Feb 26
STL8:30 amLambert-St Louis
19h 50m
1 stop
DUB10:20 amDublin
Mar 1
DUB5:10 amDublin
14h 45m
1 stop
STL1:55 pmLambert-St Louis
$469
Lufthansa
Jan 15
STL11:22 amLambert-St Louis
14h 08m
1 stop
DUB7:30 amDublin
Jan 22
DUB5:00 amDublin
24h 59m
2 stops
STL11:59 pmLambert-St Louis
$483

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated enero 14, 2026.
Use the filters below to find and compare flights from St. Louis to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

dom. 2/1

12:01 pm-10:15 am

2 stops16h 14m

Dublin

vie. 2/13

7:35 am-9:12 pm

2 stops19h 37m

$405

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mar. 4/14

12:27 pm-10:15 am

2 stops15h 48m

Dublin

mié. 4/22

1:30 pm-7:30 pm

1 stop12h 00m

$406

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mar. 4/14

1:29 pm-10:15 am

2 stops14h 46m

Dublin

mié. 4/22

12:00 pm-7:30 pm

1 stop13h 30m

$407

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

lun. 5/4

2:20 pm-8:15 am

1 stop11h 55m

Dublin

mar. 5/12

9:50 am-10:26 pm

2 stops42h 36m

$415

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

lun. 5/4

7:45 am-7:20 am

2 stops17h 35m

Dublin

mar. 5/12

9:50 am-10:26 pm

2 stops42h 36m

$416

St. LouisCork

STL - ORK

STLORK

Lambert-St Louis

vie. 2/27

11:59 am-11:10 am

2 stops17h 11m

Cork

vie. 3/6

7:40 am-9:12 pm

2 stops19h 32m

$461

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

jue. 2/26

6:36 pm-4:45 pm

2 stops16h 09m

Shannon

jue. 3/5

2:45 pm-11:29 am

1 stop26h 44m

$484

St. LouisCork

STL - ORK

STLORK

Lambert-St Louis

vie. 2/27

4:05 pm-3:25 pm

2 stops17h 20m

Cork

vie. 3/6

7:40 am-9:07 pm

3 stops19h 27m

$698

St. LouisCork

STL - ORK

STLORK

Lambert-St Louis

mié. 7/8

3:30 pm-4:30 pm

1 stop19h 00m

Cork

jue. 7/23

5:05 pm-1:25 pm

1 stop26h 20m

$710

St. LouisCork

STL - ORK

STLORK

Lambert-St Louis

mié. 3/25

10:00 am-11:10 am

3 stops20h 10m

Cork

sáb. 4/4

8:30 pm-3:24 pm

2 stops24h 54m

$742

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ireland from

How to get the cheapest flight ticket from St. Louis to Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ireland?

In general, November is the cheapest month to fly from St. Louis to Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $563. If you aren’t able to travel to Ireland during the month of November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $639.

How far in advance should I book a flight to Ireland?

You are more likely to see cheaper flights to Ireland from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around $802 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from St. Louis for as low as $614 on momondo.

Can stopping save me money on St. Louis to Ireland flights?

You could potentially save up to 44% on your flight if you consider stops on a St. Louis to Ireland flight.

Cheap St. Louis to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Ireland

Fastest flight time

10h 59m

Direct flights

None
The fastest flight from St. Louis to Ireland takes 10h 59m
There are no direct flights from St. Louis to Ireland. There are no popular flight routes from St. Louis to Ireland.
Search flight deals

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Ireland?

    Prices for flights from Lambert-St Louis Airport to Ireland are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Ireland?

  • How old do you have to be to fly from Lambert-St Louis Airport to Ireland?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The travel and health documents required for your trip to Ireland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from St. Louis to Ireland

Compare and see reviews for airlines that fly from St. Louis to Ireland with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $412Free CancellationRating
7.7
1,437 reviews
Search KLM flights
Air CanadaPriceFrom $462Free CancellationRating
7.1
10,619 reviews
Search Air Canada flights
British AirwaysPriceFrom $463Free CancellationRating
6.7
7,671 reviews
Search British Airways flights
LufthansaPriceFrom $465Free CancellationRating
6.8
7,711 reviews
Search Lufthansa flights
United AirlinesPriceFrom $475Free CancellationRating
7.4
9,156 reviews
Search United Airlines flights
IberiaPriceFrom $482Free CancellationRating
7.0
3,086 reviews
Search Iberia flights
DeltaPriceFrom $483Free CancellationRating
7.9
8,040 reviews
Search Delta flights
American AirlinesPriceFrom $485Free CancellationRating
7.2
11,119 reviews
Search American Airlines flights
Aer LingusPriceFrom $714Free CancellationRating
7.2
1,435 reviews
Search Aer Lingus flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Ireland?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Ireland. momondo saves you time and could save you money on your trip.

Can I find flights from St. Louis to Ireland with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Ireland flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Ireland?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Ireland.

I’m not ready to book a flight from St. Louis to Ireland right now. Can momondo alert me if prices change?

Price alerts on flights to Ireland from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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