What are the cheapest airlines flying from Dublin to St. Louis round-trip?

According to our current data, United Airlines (£657), and Aer Lingus (£737) offers the cheapest pricing from Dublin to St. Louis. United Airlines is priced at 25% lower than the current average price of a flight leaving 3 months from now.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 inches per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

What is the cheapest time of day to fly from DUB to STL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Dublin to St. Louis as you normally would.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Dublin 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.

£516+ Cheap Flights from Dublin to St. Louis

Cheap flight deals from Dublin to St. Louis

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Dublin to St. Louis
Explore the most affordable flight options available from Dublin to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 October 2026.

Fri 18/1211:30 -

2 stops18h 25m

Thu 7/113:55 -

2 stops14h 20m

Deal found 8/10£617

Thu 19/1111:30 -

2 stops16h 45m

Thu 26/1106:40 -

2 stops21h 35m

Deal found 5/10£618

Mon 2/1111:30 -

2 stops18h 35m

Mon 9/1106:40 -

2 stops21h 35m

Deal found 5/10£695

Fri 18/1211:30 -

2 stops18h 25m

Mon 4/113:20 -

2 stops14h 55m

Deal found 4/10£717

Sat 21/1111:30 -

2 stops18h 00m

Sat 28/1107:55 -

2 stops20h 20m

Deal found 7/10£739

Sat 14/1106:10 -

2 stops31h 35m

Tue 1/1206:30 -

2 stops51h 00m

Deal found 7/10£750

Thu 19/1105:10 -

2 stops22h 42m

Thu 26/1113:00 -

1 stop15h 20m

Deal found 5/10£787

Fri 13/1105:10 -

1 stop14h 35m

Mon 30/1111:29 -

1 stop16h 26m

Deal found 6/10£794

Sun 15/1105:10 -

1 stop14h 35m

Mon 30/1113:08 -

1 stop13h 02m

Deal found 7/10£797

Find flight deals from Dublin to St. Louis

Round-trip from	£617
One-way from	£516
Popular in	July
Cheapest in	April
Average price	£803

18/12-7/1
4 total stops
32h 45m total
Dublin to St. Louis

Search Deals

KLM
12/3-31/12
2 total stops
17h 05m total
Dublin to St. Louis

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£72 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£18 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DublinSt. Louis

DUB Dublin - STL Lambert-St Louis

DUBSTL

Dublin

Fri 12/3

05:45-16:50

2 stops17h 05m

Lambert-St Louis

Wed 31/12

00:00-07:00

Nonstop0h 00m

£516

Fastest return journey

DublinSt. Louis

DUB Dublin - STL Lambert-St Louis

DUBSTL

Dublin

Thu 11/3

09:55-20:49

1 stop16h 54m

Lambert-St Louis

Wed 31/12

00:00-07:00

Nonstop0h 00m

£524

DublinSt. Louis

DUB Dublin - STL Lambert-St Louis

DUBSTL

Dublin

Sat 13/3

09:55-23:39

1 stop19h 44m

Lambert-St Louis

Wed 31/12

00:00-07:00

Nonstop0h 00m

£562

DublinSt. Louis

DUB Dublin - STL Lambert-St Louis

DUBSTL

Dublin

Mon 26/10

16:35-07:35

2 stops44h 00m

Lambert-St Louis

Wed 31/12

00:00-07:00

Nonstop0h 00m

£578

DublinSt. Louis

DUB Dublin - STL Lambert-St Louis

DUBSTL

Dublin

Fri 18/12

11:30-23:55

2 stops18h 25m

Lambert-St Louis

Thu 7/1

13:55-10:15

2 stops14h 20m

£617

DublinSt. Louis

DUB Dublin - STL Lambert-St Louis

DUBSTL

Dublin

Thu 19/11

11:30-22:15

2 stops16h 45m

Lambert-St Louis

Thu 26/11

06:40-10:15

2 stops21h 35m

£621

DublinSt. Louis

DUB Dublin - STL Lambert-St Louis

DUBSTL

Dublin

Mon 2/11

11:30-00:05

2 stops18h 35m

Lambert-St Louis

Mon 9/11

06:40-10:15

2 stops21h 35m

£695

DublinSt. Louis

DUB Dublin - STL Lambert-St Louis

DUBSTL

Dublin

Fri 18/12

11:30-23:55

2 stops18h 25m

Lambert-St Louis

Mon 4/1

13:20-10:15

2 stops14h 55m

£717

DublinSt. Louis

DUB Dublin - STL Lambert-St Louis

DUBSTL

Dublin

Fri 18/12

11:30-23:55

2 stops18h 25m

Lambert-St Louis

Fri 8/1

06:35-10:15

2 stops21h 40m

£750

DublinSt. Louis

DUB Dublin - STL Lambert-St Louis

DUBSTL

Dublin

Fri 6/11

05:10-13:45

1 stop14h 35m

Lambert-St Louis

Thu 19/11

13:08-08:10

1 stop13h 02m

£797

Flights are sorted by cheapest return flights first.

Deals found on 8/10

Showing 1-10 of 14 resultsSorted by cheapest first

Best time to book a flight from Dublin to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Dublin with our price prediction graph.

DUB-STL

Estimated return 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 Dublin to St. Louis

What’s the top stopover airport for flights from Dublin to St. Louis?

London (LHR) – chosen by Cheapflights users on 50% of one-stop itineraries from Dublin to St. Louis on Cheapflights.

What’s the cheapest stopover airport for flights from Dublin to St. Louis?

London (LHR) is the most affordable one-stop option, with an average return flight price of £738.

What’s the fastest stopover option from Dublin to St. Louis?

Flights via Detroit (DTW) have the shortest average one-way travel time for one-stop routes: 11h 14m.

Which airport typically offers the quickest stopover for flights from Dublin to St. Louis?

Flights via Newark (EWR) offer the fastest connection on this route, with an average stopover time of 1h 30m.

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown with United Airlines and Aer Lingus from Dublin to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,317 reviews

Check prices

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

10,317 reviews

United Airlines

7.4

Good

10,317 reviews

Check prices

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

1,816 reviews

United Airlines

7.4

Good

10,317 reviews

Check prices

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 are the cheapest airlines flying from Dublin to St. Louis round-trip?
According to our current data, United Airlines (£657), and Aer Lingus (£737) offers the cheapest pricing from Dublin to St. Louis. United Airlines is priced at 25% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from Dublin to St. Louis that include hotel bookings?
Yes. In addition to deals on Dublin to St. Louis flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Dublin to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dublin to St. Louis.
Can I find deals for business class flights from Dublin to St. Louis?
Yes. Cheapflights offers flight deals from Dublin 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

Alternative routes

Complete your trip

Direct flights to United States

Flights by cabin class

Other flight options

Other flights from Dublin

Popular flights

St. Louis flight routes

Alternative routes for Dublin to St. Louis

Dublin to Kansas City flights

Top 2 airlines flying from Dublin to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest£657	Average£949	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Aer Lingus	Cheapest£737	Average£740	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights

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How does Cheapflights help users find flights from Dublin to St. Louis?

Cheapflights helps you search for flights from Dublin to St. Louis via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Dublin to St. Louis?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Dublin to St. Louis.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Dublin to St. Louis, users can toggle the no change fees filter when performing a flight search.

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

Yes! Start tracking prices for Dublin 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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Cheap flights from Dublin to St. Louis from £516

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Dublin to St. Louis

Cheapest flights from Dublin to St. LouisExplore the most affordable flight options available from Dublin to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 October 2026.

Explore the most affordable flight options available from Dublin to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 October 2026.

Best flights from Dublin to St. LouisDiscover carefully curated flight deals from Dublin to St. Louis that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 October 2026.

Discover carefully curated flight deals from Dublin to St. Louis that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 October 2026.

Last-minute flights from Dublin to St. LouisDiscover last-minute flight deals from Dublin to St. Louis. Data last updated 8 October 2026 and is based on user searches.

Discover last-minute flight deals from Dublin to St. Louis. Data last updated 8 October 2026 and is based on user searches.

One-way flights from Dublin to St. LouisSearch for one-way flight options from Dublin to St. Louis. Find affordable one-way fares based on user searches. Data last updated 8 October 2026.

Search for one-way flight options from Dublin to St. Louis. Find affordable one-way fares based on user searches. Data last updated 8 October 2026.

Find flight deals from Dublin to St. Louis

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Use the filters below to find and compare flights from Dublin to St. Louis that are best for you.

Best time to book a flight from Dublin to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Dublin with our price prediction graph.

Cheapflights Insights

What’s the top stopover airport for flights from Dublin to St. Louis?

London (LHR) – chosen by Cheapflights users on 50% of one-stop itineraries from Dublin to St. Louis on Cheapflights.

What’s the cheapest stopover airport for flights from Dublin to St. Louis?

London (LHR) is the most affordable one-stop option, with an average return flight price of £738.

What’s the fastest stopover option from Dublin to St. Louis?

Flights via Detroit (DTW) have the shortest average one-way travel time for one-stop routes: 11h 14m.

Which airport typically offers the quickest stopover for flights from Dublin to St. Louis?

Flights via Newark (EWR) offer the fastest connection on this route, with an average stopover time of 1h 30m.

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown with United Airlines and Aer Lingus from Dublin to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What are the cheapest airlines flying from Dublin to St. Louis round-trip?

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dublin to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to St. Louis by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from Dublin to St. Louis by cabin class

Find flights from Dublin to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Dublin and St. Louis flights

Browse other Dublin and St. Louis flight options. Last updated on 8 October 2026.

Other flights from Dublin

Browse through other flights departing from Dublin. Flights are based on user searches made on Cheapflights and were last updated on 8 October 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Other flights to St. Louis

Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 8 October 2026.

Top 2 airlines flying from Dublin to St. Louis

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How does Cheapflights help users find flights from Dublin to St. Louis?

Why should you use Cheapflights to find cheap flight tickets from Dublin to St. Louis?

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

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

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Cheapest flights from Dublin to St. Louis
Explore the most affordable flight options available from Dublin to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 October 2026.

Best flights from Dublin to St. Louis
Discover carefully curated flight deals from Dublin to St. Louis that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 October 2026.

Last-minute flights from Dublin to St. Louis
Discover last-minute flight deals from Dublin to St. Louis. Data last updated 8 October 2026 and is based on user searches.

One-way flights from Dublin to St. Louis
Search for one-way flight options from Dublin to St. Louis. Find affordable one-way fares based on user searches. Data last updated 8 October 2026.