£320 Cheap Flights from St. Louis (STL) to Dublin (DUB)

View £320 flight on Wed, 12 Aug 2026Opens in a new window

Flight 1

Popular airlines from Lambert-St. Louis International Airport (STL) to Dublin Airport (DUB)

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Cheap Flights from St. Louis (STL) to Dublin (DUB)

Prices were available within the past 7 days and start at £320 for one-way flights and £601 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, 14 Sept - Wed, 23 Sept
STL
St. Louis
DUB
Dublin
£601 Return, found 2 days ago
£601
Return
found 2 days ago
Select Air Canada flight, departing Mon, 14 Sept from St. Louis to Dublin, returning Wed, 23 Sept, priced at £601 found 2 days ago
KLM
Mon, 14 Sept - Wed, 23 Sept
STL
St. Louis
DUB
Dublin
£603 Return, found 2 days ago
£603
Return
found 2 days ago
Select KLM flight, departing Mon, 14 Sept from St. Louis to Dublin, returning Wed, 23 Sept, priced at £603 found 2 days ago
Lufthansa
Mon, 14 Sept - Wed, 23 Sept
STL
St. Louis
DUB
Dublin
£604 Return, found 2 days ago
£604
Return
found 2 days ago
Select Lufthansa flight, departing Mon, 14 Sept from St. Louis to Dublin, returning Wed, 23 Sept, priced at £604 found 2 days ago
Air France
Mon, 14 Sept - Wed, 23 Sept
STL
St. Louis
DUB
Dublin
£605 Return, found 2 days ago
£605
Return
found 2 days ago
Select Air France flight, departing Mon, 14 Sept from St. Louis to Dublin, returning Wed, 23 Sept, priced at £605 found 2 days ago
Air France
Mon, 14 Sept - Wed, 23 Sept
STL
St. Louis
DUB
Dublin
£609 Return, found 2 days ago
£609
Return
found 2 days ago
Select Air France flight, departing Mon, 14 Sept from St. Louis to Dublin, returning Wed, 23 Sept, priced at £609 found 2 days ago
KLM
Mon, 14 Sept - Wed, 23 Sept
STL
St. Louis
DUB
Dublin
£610 Return, found 2 days ago
£610
Return
found 2 days ago
Select KLM flight, departing Mon, 14 Sept from St. Louis to Dublin, returning Wed, 23 Sept, priced at £610 found 2 days ago
KLM
Mon, 14 Sept - Wed, 23 Sept
STL
St. Louis
DUB
Dublin
£612 Return, found 2 days ago
£612
Return
found 2 days ago
Select KLM flight, departing Mon, 14 Sept from St. Louis to Dublin, returning Wed, 23 Sept, priced at £612 found 2 days ago
Lufthansa
Mon, 14 Sept - Wed, 23 Sept
STL
St. Louis
DUB
Dublin
£613 Return, found 2 days ago
£613
Return
found 2 days ago
Select Lufthansa flight, departing Mon, 14 Sept from St. Louis to Dublin, returning Wed, 23 Sept, priced at £613 found 2 days ago
Air Canada
Mon, 14 Sept - Wed, 23 Sept
STL
St. Louis
DUB
Dublin
£620 Return, found 2 days ago
£620
Return
found 2 days ago
Select Air Canada flight, departing Mon, 14 Sept from St. Louis to Dublin, returning Wed, 23 Sept, priced at £620 found 2 days ago
British Airways
Fri, 21 Aug - Wed, 26 Aug
STL
St. Louis
DUB
Dublin
£645 Return, found 11 hours ago
£645
Return
found 11 hours ago
Select British Airways flight, departing Fri, 21 Aug from St. Louis to Dublin, returning Wed, 26 Aug, priced at £645 found 11 hours ago

Find the cheapest month to fly from St. Louis (STL) to Dublin (DUB)

September is typically the cheapest month to fly

From £379 - £776 per traveller.

Frequently asked questions

What is the cheapest month to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB)?
January is typically the cheapest month to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB), with average return fares of approximately £430. This is about 26% lower than the average price throughout the year. January sees lower prices because it falls after the busy holiday travel season, when demand for flights tends to decrease. Other cheap months to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB) include February and December.
How do I find cheap flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB)?
To find a cheap flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB)?
Based on booking data from the past year, the cheapest months to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB) are typically January and February, with average return flights around £430. However, if you're looking for the most flight options and a livelier atmosphere, July is the most popular month for this route. While July might be pricier, you'll have plenty of choices for flight times and airlines.
How many flights per day from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB)?
There are approximately 73 connecting flights per day from Lambert-St. Louis Intl. (STL) to Dublin (DUB). Some common connection points include O'Hare Intl. (ORD), Pearson Intl. (YYZ), and Hartsfield-Jackson Atlanta Intl. (ATL).
What is the earliest flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from STL to DUB. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB)?
For flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) (STL) to Dublin (DUB), you'll typically find the most options on a Wednesday, with around 75 flights available. This gives you plenty of choices for your travel plans. Major airlines on this route include American Airlines, United Airlines, and Delta Air Lines. Flight schedules are consistent throughout the week, so you'll find a good selection of flights on other days too.
What are the most popular departure times for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB)?
The most popular departure times for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) (STL) to Dublin (DUB) are in the afternoon, from 12pm to 3pm. About 28% of passengers prefer this time. Many major carriers, including American Airlines, Air Canada and United Airlines, offer flights during this window. This timing works well because it allows you to have a productive morning before heading to the airport, and you'll typically arrive at your destination in the evening.
How long does it take to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB)?
Flights from STL to DUB with one stop typically take around 10 hours, covering approximately 3,912 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB)?
Select the "Business class" and "First class" filters when looking for STL to DUB flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB) flight with Expedia?
It's easy to earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB) at the last minute?
Typically, booking a last minute flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB) flight and hotel package?
Securing a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB)?
If you booked your St. Louis, MO (STL-Lambert-St. Louis Intl.) to Dublin (DUB) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Dublin
Airlines serving
Aer Lingus, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, Iberia, KLM, Lufthansa, United
Return price
£601
Distance
6259 km

Book with confidence

Compare flights from St. Louis to Dublin easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from St. Louis to Dublin. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Dublin in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Lambert-St. Louis Intl. to Dublin.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Lambert-St. Louis Intl. (STL) to Dublin (DUB)

The easiest way to view the best deals on flights from St. Louis to Dublin today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Lambert-St. Louis Intl. to Dublin start at just £601 and range up to £645.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near St. Louis and Dublin
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your St. Louis to Dublin flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Lambert-St. Louis Intl. to Dublin for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from St. Louis to Dublin easily and book with confidence

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