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Cheap flights from St. Louis to Ireland from $277

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 11/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Delta Logo
6:00 am - 7:45 amSTL-DUB
19h 45m1 stop
Delta Logo
10:45 am - 9:50 amDUB-STL
29h 05m2 stops
$425Delta
Find Deal
lun., dic. 1 - mar., dic. 16
Delta Logo
6:00 am - 7:45 amSTL-DUB
19h 45m1 stop
Delta Logo
9:45 am - 4:49 pmDUB-STL
13h 04m1 stop
$433Delta
Find Deal
lun., dic. 1 - mar., dic. 16
Delta Logo
4:30 pm - 8:45 amSTL-DUB
10h 15m1 stop
Delta Logo
10:45 am - 4:33 pmDUB-STL
11h 48m1 stop
$434Delta
Find Deal
dom., nov. 9 - mar., nov. 25
Air Canada Logo
8:05 am - 7:10 amSTL-DUB
41h 05m2 stops
Air Canada Logo
9:00 am - 10:58 pmDUB-STL
43h 58m2 stops
$462Air Canada
Find Deal
jue., ene. 8 - sáb., ene. 17
United Airlines Logo
3:14 pm - 10:20 amSTL-DUB
13h 06m2 stops
United Airlines Logo
9:00 am - 3:29 pmDUB-STL
12h 29m1 stop
$465United Airlines
Find Deal
lun., nov. 10 - mié., nov. 26
United Airlines Logo
11:20 am - 8:10 amSTL-DUB
14h 50m1 stop
United Airlines Logo
9:00 am - 3:29 pmDUB-STL
12h 29m1 stop
$468United Airlines
Find Deal
jue., ene. 8 - sáb., ene. 17
American Airlines Logo
2:54 pm - 3:25 pmSTL-ORK
18h 31m2 stops
American Airlines Logo
7:40 am - 7:29 pmORK-STL
17h 49m2 stops
$486American Airlines
Find Deal
mar., ene. 6 - mar., ene. 20
Lufthansa Logo
3:50 pm - 11:10 amSTL-DUB
13h 20m1 stop
Lufthansa Logo
5:10 pm - 1:55 pmDUB-STL
26h 45m1 stop
$504Lufthansa
Find Deal
vie., ene. 9 - mar., ene. 20
American Airlines Logo
9:33 am - 8:40 amSTL-DUB
17h 07m1 stop
American Airlines Logo
11:30 am - 11:08 pmDUB-STL
17h 38m1 stop
$508American Airlines
Find Deal
sáb., ene. 31 - jue., feb. 12
Air Canada Logo
8:00 am - 6:10 amSTL-DUB
17h 10m2 stops
Air Canada Logo
9:50 am - 3:24 pmDUB-STL
11h 34m1 stop
$578Air Canada
Find Deal
vie., mar. 27 - mar., mar. 31

Air Canada flights from St. Louis to Ireland

Our best Air Canada deals on St. Louis to Ireland flight tickets
Air Canada
Jan 8
STL8:05 amLambert-St Louis
41h 05m
2 stops
DUB7:10 amDublin
Jan 17
DUB9:00 amDublin
43h 58m
2 stops
STL10:58 pmLambert-St Louis
$462
Find similar
Air Canada
Mar 27
STL8:00 amLambert-St Louis
17h 10m
2 stops
DUB6:10 amDublin
Mar 31
DUB9:50 amDublin
11h 34m
1 stop
STL3:24 pmLambert-St Louis
$578
Find similar
Air Canada
Nov 9
STL4:05 pmLambert-St Louis
17h 35m
2 stops
DUB3:40 pmDublin
Nov 25
DUB10:00 amDublin
18h 45m
3 stops
STL10:45 pmLambert-St Louis
$678
Find similar

United Airlines flights from St. Louis to Ireland

Our best United Airlines deals on St. Louis to Ireland flight tickets
United Airlines
Nov 10
STL3:14 pmLambert-St Louis
13h 06m
2 stops
DUB10:20 amDublin
Nov 26
DUB9:00 amDublin
12h 29m
1 stop
STL3:29 pmLambert-St Louis
$465
Find similar
United Airlines
Jan 8
STL11:20 amLambert-St Louis
14h 50m
1 stop
DUB8:10 amDublin
Jan 17
DUB9:00 amDublin
12h 29m
1 stop
STL3:29 pmLambert-St Louis
$468
Find similar
United Airlines
Nov 10
STL3:14 pmLambert-St Louis
13h 06m
2 stops
DUB10:20 amDublin
Nov 26
DUB9:00 amDublin
16h 39m
2 stops
STL7:39 pmLambert-St Louis
$470
Find similar

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 octubre 30, 2025.
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

lun. 12/1

6:00 am-7:45 am

1 stop19h 45m

Dublin

mar. 12/16

10:45 am-9:50 am

2 stops29h 05m

$425

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

lun. 12/1

6:00 am-7:45 am

1 stop19h 45m

Dublin

mar. 12/16

9:45 am-4:49 pm

1 stop13h 04m

$433

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

dom. 11/9

4:30 pm-8:45 am

1 stop10h 15m

Dublin

mar. 11/25

10:45 am-4:33 pm

1 stop11h 48m

$434

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

jue. 1/8

8:05 am-7:10 am

2 stops41h 05m

Dublin

sáb. 1/17

9:00 am-10:58 pm

2 stops43h 58m

$462

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

lun. 11/10

3:14 pm-10:20 am

2 stops13h 06m

Dublin

mié. 11/26

9:00 am-3:29 pm

1 stop12h 29m

$465

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

jue. 1/8

11:20 am-8:10 am

1 stop14h 50m

Dublin

sáb. 1/17

9:00 am-3:29 pm

1 stop12h 29m

$468

St. LouisCork

STL - ORK

STLORK

Lambert-St Louis

mar. 1/6

2:54 pm-3:25 pm

2 stops18h 31m

Cork

mar. 1/20

7:40 am-7:29 pm

2 stops17h 49m

$486

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

vie. 1/9

3:50 pm-11:10 am

1 stop13h 20m

Dublin

mar. 1/20

5:10 pm-1:55 pm

1 stop26h 45m

$504

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

sáb. 1/31

9:33 am-8:40 am

1 stop17h 07m

Dublin

jue. 2/12

11:30 am-11:08 pm

1 stop17h 38m

$508

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

vie. 3/27

8:00 am-6:10 am

2 stops17h 10m

Dublin

mar. 3/31

9:50 am-3:24 pm

1 stop11h 34m

$578

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 $558. If you aren’t able to travel to Ireland during the month of November, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $702.

What is the cheapest day to depart on your flight to Ireland?

The cheapest day to depart on your flight to Ireland is on a Wednesday when prices can be found for as low as $865. This is often the case because there is less demand to fly during this day of the week. Flights from St. Louis to Ireland on a Saturday will generally be more expensive and average around $972. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ireland?

According to our data, the cheapest time of day to fly to Ireland is in the evening. momondo users have found flights departing from St. Louis to Ireland in the evening for as low as $556. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Ireland is at noon when prices are around $1,057.

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 $853 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 $622 on momondo.

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

You could potentially save up to 4% 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

Direct flights

None
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
1,406 reviews
Search KLM flights
Air CanadaPriceFrom $462Free CancellationRating
7.1
10,383 reviews
Search Air Canada flights
British AirwaysPriceFrom $463Free CancellationRating
6.7
7,487 reviews
Search British Airways flights
IberiaPriceFrom $482Free CancellationRating
7.0
3,004 reviews
Search Iberia flights
DeltaPriceFrom $483Free CancellationRating
7.9
7,998 reviews
Search Delta flights
United AirlinesPriceFrom $504Free CancellationRating
7.4
8,999 reviews
Search United Airlines flights
LufthansaPriceFrom $526Free CancellationRating
6.8
7,542 reviews
Search Lufthansa flights
American AirlinesPriceFrom $560Free CancellationRating
7.2
11,034 reviews
Search American Airlines flights
Aer LingusPriceFrom $736Free CancellationRating
7.2
1,365 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.

An easier way to manage your Ireland trip

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1 adult
sáb. 11/29
sáb. 12/6
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