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Cheap flights from Ireland to St. Louis

DUB — STL
18 Oct — 25 Oct1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Ireland to St. Louis

Popular in

July

Cheapest in

April

Average price

£867
Highest demand for flights based on searches. 11% potential increase in price (£83 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£19 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Reviews of airlines servicing St. Louis

Read through reviews of airlines operating flights from Ireland to St. Louis, such as United Airlines and Aer Lingus. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,227 reviews
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Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.7

Reviews

1 / 20
8.0
Excellent

Asha,Sept 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.
United Airlines
7.4
Good
10,227 reviews
United Airlines
7.4
Good
10,227 reviews
Check prices

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.7

Reviews

1 / 20
8.0
Excellent

Asha,Sept 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.
Aer Lingus
7.3
Good
1,767 reviews
United Airlines
7.4
Good
10,227 reviews
Check prices

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.7

Reviews

1 / 20
8.0
Excellent

Asha,Sept 2026

LGA - IAH

The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.

Related info for your journey

  • What airport do you fly into for flights to St. Louis from Ireland?

    If you book a flight to St. Louis from Ireland, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

  • Can I find deals for flights from Ireland to St. Louis that include hotel bookings?

    Yes. In addition to deals on Ireland to St. Louis flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Ireland to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to St. Louis.

  • Can I find deals for business class flights from Ireland to St. Louis?

    Yes. Cheapflights offers flight deals from Ireland to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Ireland to St. Louis

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£650Average£938FlexibilityNo cancel feeOn-time69%
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Aer LingusCheapest£729Average£732FlexibilityNo cancel feeOn-timeN/A
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Millions of users choose and trust Cheapflights to book the best flight deals from Ireland to St. Louis for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Ireland to St. Louis with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ireland to St. Louis flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Ireland to St. Louis become cheaper?

Yes! Start tracking prices for Ireland to St. Louis flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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