$343+ Cheap flights from St. Louis (STL) to Ireland
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DUB
Dec 12 — Dec 191
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Ireland with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from St. Louis to IrelandExplore the most affordable flight options available from St. Louis to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 12, 2026.
Explore the most affordable flight options available from St. Louis to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 12, 2026.
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/85:05 pm -
1 stop10h 50m
Tue 12/159:00 am -
2 stops35h 41m
Deal found 11/10![United Airlines logo]()
$738
This Justfly.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/811:05 am -
1 stop14h 25m
Tue 12/159:00 am -
1 stop12h 26m
Deal found 11/8![Multiple Airlines logo]()
$739
This United deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/288:05 am -
1 stop18h 05m
Wed 1/135:10 am -
1 stop14h 35m
Deal found 11/12![Multiple Airlines logo]()
$741
This Justfly.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:55 pm -
2 stops30h 15m
Tue 12/159:00 am -
2 stops35h 41m
Deal found 11/9![Air Canada logo]()
$746
This United Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:30 am -
1 stop19h 50m
Tue 12/159:00 am -
1 stop12h 26m
Deal found 11/8![United Airlines logo]()
$751
This Delta deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/286:00 am -
1 stop19h 45m
Wed 1/138:50 am -
2 stops20h 36m
Deal found 11/11![Delta logo]()
$753
This KAYAK deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/139:59 am -
1 stop13h 51m
Mon 12/212:00 pm -
1 stop25h 28m
Deal found 11/10![Aer Lingus logo]()
$987
This Ovago deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/189:50 am -
1 stop14h 00m
Wed 11/257:50 am -
2 stops18h 00m
Deal found 11/11![Multiple Airlines logo]()
$1,016
This Cheapflightsfares deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/181:58 pm -
2 stops20h 47m
Wed 11/257:50 am -
2 stops17h 18m
Deal found 11/11![British Airways logo]()
$1,030
This Ovago deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/139:59 am -
1 stop13h 51m
Mon 12/212:00 pm -
2 stops16h 16m
Deal found 11/10![Multiple Airlines logo]()
$1,039
This Air Canada deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:53 am -
3 stops18h 37m
Wed 11/257:50 am -
3 stops21h 34m
Deal found 11/11![Air Canada logo]()
$1,070
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/189:50 am -
1 stop14h 00m
Wed 11/252:00 pm -
1 stop25h 26m
Deal found 11/11![American Airlines logo]()
$1,090
Best flights from St. Louis to IrelandDiscover carefully curated flight deals from St. Louis to Ireland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 12, 2026.
Discover carefully curated flight deals from St. Louis to Ireland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 12, 2026.
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/205:34 pm -
2 stops31h 36m
Fri 3/268:00 am -
2 stops43h 12m
Deal found 11/9![United Airlines logo]()
$703
This United deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/286:04 am -
1 stop19h 26m
Wed 1/135:10 am -
1 stop14h 35m
Deal found 11/8![Multiple Airlines logo]()
$750
This Delta deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/76:05 pm -
2 stops18h 20m
Tue 12/155:45 am -
2 stops17h 35m
Deal found 11/8![Delta logo]()
$765
This British Airways deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/199:00 pm -
1 stop12h 10m
Fri 4/237:10 am -
2 stops18h 23m
Deal found 11/7![British Airways logo]()
$983
This United Airlines deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/288:25 am -
1 stop20h 15m
Fri 4/309:50 am -
1 stop11h 36m
Deal found 11/12![United Airlines logo]()
$713
This United deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/198:58 am -
1 stop17h 32m
Fri 3/265:10 am -
1 stop14h 35m
Deal found 11/12![Multiple Airlines logo]()
$757
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/275:05 pm -
1 stop33h 05m
Wed 3/310:40 am -
1 stop11h 39m
Deal found 11/10![United Airlines logo]()
$721
This United deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/188:58 am -
1 stop17h 32m
Fri 3/265:10 am -
1 stop14h 35m
Deal found 11/12![Multiple Airlines logo]()
$757
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1810:23 am -
2 stops17h 52m
Wed 4/2112:30 pm -
2 stops26h 07m
Deal found 11/11![United Airlines logo]()
$728
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/81:18 pm -
1 stop12h 52m
Tue 12/159:00 am -
2 stops33h 22m
Deal found 11/9![United Airlines logo]()
$738
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/149:23 am -
1 stop18h 22m
Sun 4/189:50 am -
2 stops42h 16m
Deal found 11/9![United Airlines logo]()
$749
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/219:52 am -
1 stop18h 03m
Sun 2/289:00 am -
1 stop12h 26m
Deal found 11/10![United Airlines logo]()
$758
This Justfly.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/164:05 pm -
2 stops13h 25m
Wed 12/237:50 am -
3 stops19h 32m
Deal found 11/11![Air Canada logo]()
$2,650
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/97:30 am -
2 stops20h 45m
Fri 4/1612:30 pm -
2 stops26h 07m
Deal found 11/11![United Airlines logo]()
$778
This BusinessClass deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/169:59 am -
1 stop13h 51m
Wed 12/232:00 pm -
2 stops25h 27m
Deal found 11/11![Multiple Airlines logo]()
$1,184
This Gurufare deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/275:40 pm -
1 stop30h 10m
Sun 1/38:05 pm -
2 stops32h 37m
Deal found 11/11![Multiple Airlines logo]()
$1,459
This British Airways deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:27 am -
2 stops29h 58m
Sun 12/205:30 pm -
2 stops35h 02m
Deal found 11/10![British Airways logo]()
$4,440
This British Airways deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/81:43 pm -
2 stops15h 47m
Mon 12/218:05 pm -
2 stops29h 47m
Deal found 11/10![British Airways logo]()
$4,440
Last-minute flights from St. Louis to IrelandDiscover last-minute flight deals from St. Louis to Ireland. Data last updated November 12, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Ireland. Data last updated November 12, 2026 and is based on user searches.
This Ovago deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/189:50 am -
1 stop14h 00m
Wed 11/257:50 am -
2 stops18h 00m
Deal found 11/11![Multiple Airlines logo]()
$1,016
This Cheapflightsfares deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/181:58 pm -
2 stops20h 47m
Wed 11/257:50 am -
2 stops17h 18m
Deal found 11/11![British Airways logo]()
$1,030
This Air Canada deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:53 am -
3 stops18h 37m
Wed 11/257:50 am -
3 stops21h 34m
Deal found 11/11![Air Canada logo]()
$1,070
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/189:50 am -
1 stop14h 00m
Wed 11/252:00 pm -
1 stop25h 26m
Deal found 11/11![American Airlines logo]()
$1,090
This United Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:30 am -
1 stop19h 50m
Tue 12/159:00 am -
1 stop12h 26m
Deal found 11/8![United Airlines logo]()
$751
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/85:05 pm -
1 stop10h 50m
Tue 12/159:00 am -
2 stops35h 41m
Deal found 11/10![United Airlines logo]()
$738
This Justfly.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/811:05 am -
1 stop14h 25m
Tue 12/159:00 am -
1 stop12h 26m
Deal found 11/8![Multiple Airlines logo]()
$739
This Justfly.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:55 pm -
2 stops30h 15m
Tue 12/159:00 am -
2 stops35h 41m
Deal found 11/9![Air Canada logo]()
$746
This KAYAK deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/139:59 am -
1 stop13h 51m
Mon 12/212:00 pm -
1 stop25h 28m
Deal found 11/10![Aer Lingus logo]()
$987
This Ovago deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/139:59 am -
1 stop13h 51m
Mon 12/212:00 pm -
2 stops16h 16m
Deal found 11/10![Multiple Airlines logo]()
$1,039
This United deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/288:05 am -
1 stop18h 05m
Wed 1/135:10 am -
1 stop14h 35m
Deal found 11/12![Multiple Airlines logo]()
$741
This Delta deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/286:00 am -
1 stop19h 45m
Wed 1/138:50 am -
2 stops20h 36m
Deal found 11/11![Delta logo]()
$753
One-way flights from St. Louis to IrelandSearch for one-way flight options from St. Louis to Ireland. Find affordable one-way fares based on user searches. Data last updated November 12, 2026.
Search for one-way flight options from St. Louis to Ireland. Find affordable one-way fares based on user searches. Data last updated November 12, 2026.
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/155:34 pm -
2 stops31h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![United Airlines logo]()
$343
This deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/159:25 pm -
1 stop14h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![British Airways logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1510:30 am -
3 stops52h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$433
This Ovago deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/154:05 pm -
1 stop32h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Aer Lingus logo]()
$453
Find flight deals from St. Louis to Ireland
Keep the following information in mind while searching for St. Louis to Ireland flight deals. Data was last updated November 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $686 (Expedia) |
One-way from | $343 (United Airlines) |
Popular in | June |
Cheapest in | September |
Average price | $815 |
Cheapflights 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, Cheapflights users made 7,457,451 searches. Data last updated November 12, 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
Cheapest round-trip
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Mon 3/15
5:34 pm-6:10 am
2 stops31h 36m
Dublin
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$343
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Mon 3/15
10:30 am-8:05 pm
3 stops52h 35m
Dublin
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$433
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Mon 3/15
4:05 pm-5:10 am
1 stop32h 05m
Dublin
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$453
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Sat 3/20
5:34 pm-6:10 am
2 stops31h 36m
Dublin
Fri 3/26
8:00 am-10:12 pm
2 stops43h 12m
$703
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Wed 4/28
8:25 am-10:40 am
1 stop20h 15m
Dublin
Fri 4/30
9:50 am-3:26 pm
1 stop11h 36m
$713
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Sat 2/27
5:05 pm-8:10 am
1 stop33h 05m
Dublin
Wed 3/3
10:40 am-4:19 pm
1 stop11h 39m
$721
St. LouisShannon
STL Lambert-St Louis - SNN Shannon
STLSNN
Lambert-St Louis
Sun 4/18
10:23 am-10:15 am
2 stops17h 52m
Shannon
Wed 4/21
12:30 pm-8:37 am
2 stops26h 07m
$728
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Tue 12/8
1:18 pm-8:10 am
1 stop12h 52m
Dublin
Tue 12/15
9:00 am-12:22 pm
2 stops33h 22m
$738
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Wed 4/14
9:23 am-9:45 am
1 stop18h 22m
Dublin
Sun 4/18
9:50 am-10:06 pm
2 stops42h 16m
$749
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Mon 12/28
6:04 am-7:30 am
1 stop19h 26m
Dublin
Wed 1/13
5:10 am-1:45 pm
1 stop14h 35m
$750
Showing 1-10 of 21 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Ireland
Have a flexible travel schedule? Discover the best time to fly to Ireland from St. Louis with our price prediction graph.
STL-DUB
STL-SNN
STL-ORK
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Ireland
STL-IE0
STL-DUB
STL-SNN
STL-ORK
What is the cheapest month to book a flight from St. Louis to Ireland?
Currently, September is the cheapest month in which you can book a flight from St. Louis to Ireland (average of $434). Flying from St. Louis to Ireland in June is currently the most expensive (average of $1,256). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How far ahead should I book a flight from St. Louis to Ireland?
To ensure you get the cheapest price possible for a flight from St. Louis to Ireland, you should look to book at least 52 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Reviews of airlines servicing Ireland
Get insights into the airlines that provide service to Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ireland. Reviews last updated November 12, 2026.
Get a feel of what it's like to fly with Delta,Aer Lingus, andUnited Airlines from St. Louis to Ireland by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Entertainment
7.8
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Crew
8.5
Comfort
7.8
Boarding
8.1
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for St. Louis to Ireland
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ireland by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Ireland by cabin class
Find flights from St. Louis to Ireland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Ireland flights
Browse other St. Louis and Ireland flight options. Last updated on November 12, 2026.
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St. Louis to Ireland flights
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Top 8 airlines flying from St. Louis to Ireland
Discover the top 8 airlines that operate flights from St. Louis to Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$325 | Average$402 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$429 | Average$625 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$430 | Average$637 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$474 | Average$768 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$482 | Average$857 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$484 | Average$940 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$485 | Average$847 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$538 | Average$911 | FlexibilityNo cancel fee | On-time75% |