$225+ Cheap flights from St. Louis (STL) to Ireland
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DUB
Sep 4 — Sep 111
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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Ireland
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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 August 5, 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 August 5, 2026.
This KAYAK deal was found by Cheapflights users on 8/1. 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.
Tue 9/88:55 am -
1 stop14h 15m
Tue 9/151:20 pm -
1 stop13h 00m
Deal found 8/1![Aer Lingus logo]()
$343
This KAYAK deal was found by Cheapflights users on 8/2. 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.
Tue 9/18:55 am -
1 stop14h 15m
Thu 9/101:20 pm -
1 stop13h 00m
Deal found 8/2![Aer Lingus logo]()
$372
This Ovago deal was found by Cheapflights users on 8/1. 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 9/78:55 am -
1 stop14h 15m
Wed 9/161:20 pm -
1 stop13h 00m
Deal found 8/1![Aer Lingus logo]()
$375
This KAYAK deal was found by Cheapflights users on 8/3. 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.
Wed 9/28:55 am -
1 stop14h 15m
Wed 9/91:20 pm -
1 stop13h 00m
Deal found 8/3![Aer Lingus logo]()
$382
This KAYAK deal was found by Cheapflights users on 8/1. 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.
Wed 10/284:05 pm -
1 stop32h 05m
Thu 11/191:00 pm -
1 stop32h 26m
Deal found 8/1![Aer Lingus logo]()
$388
This Gurufare deal was found by Cheapflights users on 8/1. 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.
Wed 10/284:05 pm -
1 stop32h 05m
Thu 11/121:00 pm -
1 stop32h 26m
Deal found 8/1![Aer Lingus logo]()
$390
This BusinessClass deal was found by Cheapflights users on 8/1. 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 10/284:05 pm -
1 stop32h 05m
Fri 11/131:00 pm -
1 stop32h 26m
Deal found 8/1![Aer Lingus logo]()
$391
This KAYAK deal was found by Cheapflights users on 8/2. 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.
Tue 9/18:55 am -
1 stop14h 15m
Tue 9/81:20 pm -
1 stop13h 00m
Deal found 8/2![Aer Lingus logo]()
$400
This KAYAK deal was found by Cheapflights users on 8/2. 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.
Wed 9/28:55 am -
1 stop14h 15m
Tue 9/81:20 pm -
1 stop13h 00m
Deal found 8/2![Aer Lingus logo]()
$421
This KLM deal was found by Cheapflights users on 8/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/172:18 pm -
2 stops14h 22m
Mon 11/235:40 am -
2 stops16h 54m
Deal found 8/1![KLM logo]()
$763
This Air France deal was found by Cheapflights users on 8/1. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/94:10 pm -
2 stops16h 30m
Sat 9/196:15 am -
2 stops16h 17m
Deal found 8/1![Multiple Airlines logo]()
$816
This Delta deal was found by Cheapflights users on 8/4. 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.
Wed 9/94:10 pm -
2 stops16h 30m
Sat 9/1910:50 am -
2 stops18h 52m
Deal found 8/4![Delta logo]()
$817
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 August 5, 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 August 5, 2026.
This Delta deal was found by Cheapflights users on 8/2. 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 11/96:00 am -
1 stop19h 45m
Wed 11/185:45 am -
2 stops18h 28m
Deal found 8/2![Delta logo]()
$702
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/81:00 pm -
1 stop15h 40m
Tue 9/159:20 am -
2 stops31h 56m
Deal found 8/3![United Airlines logo]()
$736
This KLM deal was found by Cheapflights users on 8/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/172:18 pm -
2 stops14h 22m
Mon 11/235:40 am -
2 stops16h 54m
Deal found 8/1![KLM logo]()
$763
This Air Canada deal was found by Cheapflights users on 8/5. 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 9/912:10 pm -
2 stops21h 00m
Sat 9/197:10 am -
3 stops21h 49m
Deal found 8/5![Air Canada logo]()
$1,040
This Delta deal was found by Cheapflights users on 8/4. 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 10/263:35 pm -
1 stop11h 20m
Wed 11/45:45 am -
2 stops21h 40m
Deal found 8/4![Delta logo]()
$722
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Thu 9/104:50 pm -
1 stop12h 20m
Wed 9/169:20 am -
2 stops32h 37m
Deal found 8/5![United Airlines logo]()
$790
This Mytrip deal was found by Cheapflights users on 8/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:55 am -
2 stops26h 25m
Sat 9/2610:25 am -
3 stops33h 00m
Deal found 8/4![Multiple Airlines logo]()
$1,733
This United Airlines deal was found by Cheapflights users on 8/1. 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 9/28:40 am -
1 stop16h 40m
Sat 9/129:20 am -
1 stop10h 40m
Deal found 8/1![United Airlines logo]()
$804
This Delta deal was found by Cheapflights users on 8/4. 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.
Wed 9/94:10 pm -
2 stops16h 30m
Sat 9/1910:50 am -
2 stops18h 52m
Deal found 8/4![Delta logo]()
$817
This United Airlines deal was found by Cheapflights users on 8/4. 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 9/294:50 pm -
1 stop11h 25m
Mon 10/512:30 pm -
1 stop14h 39m
Deal found 8/4![United Airlines logo]()
$818
This Delta deal was found by Cheapflights users on 8/3. 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.
Thu 10/86:47 am -
2 stops19h 08m
Tue 10/1311:10 am -
2 stops18h 11m
Deal found 8/3![Delta logo]()
$826
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Thu 9/1012:59 pm -
1 stop12h 31m
Thu 9/1712:30 pm -
1 stop14h 17m
Deal found 8/5![United Airlines logo]()
$829
This Delta deal was found by Cheapflights users on 8/4. 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.
Thu 9/106:40 am -
2 stops26h 00m
Sat 9/196:15 am -
2 stops32h 45m
Deal found 8/4![Delta logo]()
$857
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/91:36 pm -
2 stops14h 39m
Tue 9/229:30 am -
1 stop12h 08m
Deal found 7/31![United Airlines logo]()
$832
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Thu 9/249:30 am -
1 stop19h 40m
Mon 10/59:50 am -
2 stops32h 23m
Deal found 8/5![United Airlines logo]()
$843
This Delta deal was found by Cheapflights users on 8/2. 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 8/179:25 am -
2 stops23h 15m
Sun 8/235:15 pm -
2 stops29h 02m
Deal found 8/2![Delta logo]()
$946
This Delta deal was found by Cheapflights users on 8/2. 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.
Tue 8/1810:33 am -
2 stops22h 07m
Sun 8/235:15 pm -
2 stops30h 38m
Deal found 8/2![Delta logo]()
$946
This United Airlines deal was found by Cheapflights users on 8/4. 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 9/45:00 pm -
1 stop32h 30m
Sat 9/129:20 am -
1 stop10h 40m
Deal found 8/4![United Airlines logo]()
$866
Last-minute flights from St. Louis to IrelandDiscover last-minute flight deals from St. Louis to Ireland. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Ireland. Data last updated August 5, 2026 and is based on user searches.
This KAYAK deal was found by Cheapflights users on 8/2. 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.
Tue 9/18:55 am -
1 stop14h 15m
Thu 9/101:20 pm -
1 stop13h 00m
Deal found 8/2![Aer Lingus logo]()
$372
This KAYAK deal was found by Cheapflights users on 8/2. 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.
Tue 9/18:55 am -
1 stop14h 15m
Tue 9/81:20 pm -
1 stop13h 00m
Deal found 8/2![Aer Lingus logo]()
$400
This KAYAK deal was found by Cheapflights users on 8/2. 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.
Tue 9/18:55 am -
1 stop14h 15m
Sun 9/61:20 pm -
1 stop13h 02m
Deal found 8/2![Aer Lingus logo]()
$450
This KAYAK deal was found by Cheapflights users on 8/3. 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.
Wed 9/28:55 am -
1 stop14h 15m
Wed 9/91:20 pm -
1 stop13h 00m
Deal found 8/3![Aer Lingus logo]()
$382
This KAYAK deal was found by Cheapflights users on 8/2. 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.
Wed 9/28:55 am -
1 stop14h 15m
Tue 9/81:20 pm -
1 stop13h 00m
Deal found 8/2![Aer Lingus logo]()
$421
This Ovago deal was found by Cheapflights users on 8/1. 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 9/78:55 am -
1 stop14h 15m
Wed 9/161:20 pm -
1 stop13h 00m
Deal found 8/1![Aer Lingus logo]()
$375
This KAYAK deal was found by Cheapflights users on 8/2. 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.
Mon 9/78:55 am -
1 stop14h 15m
Mon 9/141:20 pm -
1 stop13h 00m
Deal found 8/2![Aer Lingus logo]()
$422
This KAYAK deal was found by Cheapflights users on 8/1. 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.
Tue 9/88:55 am -
1 stop14h 15m
Tue 9/151:20 pm -
1 stop13h 00m
Deal found 8/1![Aer Lingus logo]()
$343
This Air France deal was found by Cheapflights users on 8/1. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/94:10 pm -
2 stops16h 30m
Sat 9/196:15 am -
2 stops16h 17m
Deal found 8/1![Multiple Airlines logo]()
$816
This Delta deal was found by Cheapflights users on 8/4. 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.
Wed 9/94:10 pm -
2 stops16h 30m
Sat 9/1910:50 am -
2 stops18h 52m
Deal found 8/4![Delta logo]()
$817
This United Airlines deal was found by Cheapflights users on 8/4. 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 9/98:00 am -
1 stop17h 30m
Tue 9/2212:30 pm -
1 stop17h 08m
Deal found 8/4![United Airlines logo]()
$828
This United Airlines deal was found by Cheapflights users on 8/4. 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 9/294:50 pm -
1 stop11h 25m
Mon 10/512:30 pm -
1 stop14h 39m
Deal found 8/4![United Airlines logo]()
$818
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 August 5, 2026.
Search for one-way flight options from St. Louis to Ireland. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This KAYAK deal was found by Cheapflights users on 8/4. 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.
Mon 9/78:55 am -
1 stop14h 15m
Deal found 8/4![Aer Lingus logo]()
$225
This KAYAK deal was found by Cheapflights users on 8/3. 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 9/138:55 am -
1 stop14h 15m
Deal found 8/3![Aer Lingus logo]()
$248
This KAYAK deal was found by Cheapflights users on 8/2. 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.
Wed 11/184:05 pm -
1 stop31h 05m
Deal found 8/2![Aer Lingus logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Thu 10/1510:35 am -
3 stops48h 45m
Deal found 8/1![Multiple Airlines logo]()
$286
This KAYAK deal was found by Cheapflights users on 8/3. 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.
Thu 9/178:55 am -
1 stop14h 15m
Deal found 8/3![Aer Lingus logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Wed 11/1810:35 am -
3 stops52h 55m
Deal found 8/2![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Tue 10/67:20 pm -
3 stops56h 00m
Deal found 8/2![Multiple Airlines logo]()
$418
This Thrive Travel deal was found by Cheapflights users on 8/4. 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 Thrive Travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:59 pm -
2 stops16h 41m
Deal found 8/4![Lufthansa logo]()
$442
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 8/107:10 pm -
3 stops56h 20m
Deal found 8/4![Multiple Airlines logo]()
$455
This Delta deal was found by Cheapflights users on 8/3. 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.
Sun 9/136:00 am -
2 stops22h 45m
Deal found 8/3![Delta logo]()
$463
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/126:53 pm -
2 stops30h 52m
Deal found 8/3![United Airlines logo]()
$467
This Delta deal was found by Cheapflights users on 8/3. 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.
Sat 9/125:47 pm -
1 stop32h 08m
Deal found 8/3![Delta logo]()
$475
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 August 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $338 (KAYAK) |
One-way from | $225 (KAYAK) |
Popular in | December |
Cheapest in | September |
Average price | $606 |
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 2,558,603 searches. Data last updated August 5, 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 11/9
6:00 am-7:45 am
1 stop19h 45m
Dublin
Wed 11/18
5:45 am-6:13 pm
2 stops18h 28m
$702
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Mon 10/26
3:35 pm-7:55 am
1 stop11h 20m
Dublin
Wed 11/4
5:45 am-9:25 pm
2 stops21h 40m
$722
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Tue 9/8
1:00 pm-10:40 am
1 stop15h 40m
Dublin
Tue 9/15
9:20 am-11:16 am
2 stops31h 56m
$736
St. LouisCork
STL Lambert-St Louis - ORK Cork
STLORK
Lambert-St Louis
Tue 11/17
2:18 pm-10:40 am
2 stops14h 22m
Cork
Mon 11/23
5:40 am-4:34 pm
2 stops16h 54m
$763
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Thu 9/10
4:50 pm-11:10 am
1 stop12h 20m
Dublin
Wed 9/16
9:20 am-11:57 am
2 stops32h 37m
$790
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Wed 9/2
8:40 am-7:20 am
1 stop16h 40m
Dublin
Sat 9/12
9:20 am-2:00 pm
1 stop10h 40m
$804
St. LouisCork
STL Lambert-St Louis - ORK Cork
STLORK
Lambert-St Louis
Wed 9/9
4:10 pm-2:40 pm
2 stops16h 30m
Cork
Sat 9/19
10:50 am-11:42 pm
2 stops18h 52m
$817
Quickest round-trip
St. LouisShannon
STL Lambert-St Louis - SNN Shannon
STLSNN
Lambert-St Louis
Tue 9/29
4:50 pm-10:15 am
1 stop11h 25m
Shannon
Mon 10/5
12:30 pm-9:09 pm
1 stop14h 39m
$818
St. LouisDublin
STL Lambert-St Louis - DUB Dublin
STLDUB
Lambert-St Louis
Thu 10/8
6:47 am-7:55 am
2 stops19h 08m
Dublin
Tue 10/13
11:10 am-11:21 pm
2 stops18h 11m
$826
St. LouisShannon
STL Lambert-St Louis - SNN Shannon
STLSNN
Lambert-St Louis
Thu 9/10
12:59 pm-7:30 am
1 stop12h 31m
Shannon
Thu 9/17
12:30 pm-8:47 pm
1 stop14h 17m
$829
Showing 1-10 of 35 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-ORK
STL-SNN
STL-KIR
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-ORK
STL-SNN
STL-KIR
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 $449). Flying from St. Louis to Ireland in June is currently the most expensive (average of $1,254). 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 56 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 August 5, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAer Lingus 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.
Crew
8.5
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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.
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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 August 5, 2026.
Popular flight searches
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St. Louis to Ireland flights
Consider these flights traveling from St. Louis to Ireland.
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Consider these flights traveling to Ireland regions.
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 2,558,603 searches. Data last updated August 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$325 | Average$403 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$429 | Average$597 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$430 | Average$631 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$482 | Average$809 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$484 | Average$786 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$487 | Average$818 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$523 | Average$723 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$532 | Average$828 | FlexibilityNo cancel fee | On-time75% |