Cheap flights from St. Louis to Ireland from $312
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Ireland departing on 2/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Round-trip
1 adult
Economy
0 bags
Deals available from 900+ travel sites.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from St. Louis to Ireland
Cheap round-trip flights
These are some of the best round-trip flight deals from St. Louis to Ireland that have been recently found on momondo from popular airlines, departing in the coming months.
Cheap one-way flights
Flying one-way? These are some of the best deals recently discovered on momondo for flights from St. Louis to Ireland.
Cheap last minute flights
Planning a quick getaway from St. Louis to Ireland? These are the last-minute flight deals available now.
Cheap direct flights
If you prefer a non-stop journey, check out our latest direct flight deals to Ireland, so you can enjoy a seamless trip without layovers.
Cheap bus & train deals from St. Louis to Ireland
Find recent round-trip train or bus tickets from St. Louis to Ireland.
All round-trip flight deals from St. Louis to Ireland
The cheapest plane tickets from St. Louis to Ireland found on KAYAK recently.
Air Canada flights from St. Louis to Ireland
Our best Air Canada deals on St. Louis to Ireland flight tickets
Air Canada![Air Canada]()
Feb 3![Air Canada]()
Feb 12
STL2:55 pmLambert-St Louis
34h 15m
2 stops
DUB7:10 amDublin
DUB9:00 amDublin
12h 06m
1 stop
STL3:06 pmLambert-St Louis
Air Canada![Air Canada]()
Feb 3![Air Canada]()
Feb 12
STL2:55 pmLambert-St Louis
34h 15m
2 stops
DUB7:10 amDublin
DUB9:00 amDublin
12h 06m
1 stop
STL3:06 pmLambert-St Louis
Delta flights from St. Louis to Ireland
Our best Delta deals on St. Louis to Ireland flight tickets
Delta![Delta]()
Mar 9![Delta]()
Mar 20
STL6:00 amLambert-St Louis
22h 45m
1 stop
DUB9:45 amDublin
DUB12:00 pmDublin
26h 14m
1 stop
STL9:14 amLambert-St Louis
Delta![Delta]()
Mar 6![Delta]()
Mar 13
STL7:15 amLambert-St Louis
18h 50m
2 stops
DUB8:05 amDublin
DUB12:00 pmDublin
26h 14m
1 stop
STL9:14 amLambert-St Louis
See travel insights to Ireland from
How to get the cheapest flight ticket from St. Louis to Ireland
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
Prices
Airlines
What is the cheapest month to fly to Ireland?
In general, November is the cheapest month to fly from St. Louis to Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $597. If you aren’t able to travel to Ireland during the month of November, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $605.
What is the cheapest day to depart on your flight to Ireland?
The cheapest day to depart on your flight to Ireland is on a Wednesday when prices can be found for as low as $865. This is often the case because there is less demand to fly during this day of the week. Flights from St. Louis to Ireland on a Saturday will generally be more expensive and average around $972. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Ireland?
According to our data, the cheapest time of day to fly to Ireland is in the evening. momondo users have found flights departing from St. Louis to Ireland in the evening for as low as $556. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Ireland is at noon when prices are around $1,057.
How far in advance should I book a flight to Ireland?
You are more likely to see cheaper flights to Ireland from St. Louis when booking 4 weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around $910 when searching 4 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from St. Louis for as low as $811 on momondo.
What is the cheapest airline that flies from Lambert-St Louis to Ireland?
Lufthansa, Iberia, and British Airways are the most popular carriers operating from Lambert-St Louis to Ireland
What airlines fly to Ireland?
American Airlines, United Airlines and Air Canada are the top three most popular airlines that fly to Ireland from St. Louis according to our data. American Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 9 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.
Cheap St. Louis to Ireland flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Ireland
When did momondo last update prices for flights from Lambert-St Louis Airport to Ireland?
Prices for flights from Lambert-St Louis Airport to Ireland are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Ireland?
The number of operators available for flights from Lambert-St Louis Airport to Ireland is 9 as of January 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Ireland?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Ireland.
What documentation or ID do you need to fly to Ireland?
The travel and health documents required for your trip to Ireland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from St. Louis to Ireland
Compare and see reviews for airlines that fly from St. Louis to Ireland with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $491 | Free Cancellation | Rating 7.4 8,985 reviews | |||
| PriceFrom $491 | Free Cancellation | Rating 7.0 2,646 reviews | |||
| PriceFrom $492 | Free Cancellation | Rating 7.0 8,635 reviews | |||
| PriceFrom $499 | Free Cancellation | Rating 6.6 6,834 reviews | |||
| PriceFrom $533 | Free Cancellation | Rating 7.8 1,341 reviews | |||
| PriceFrom $544 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $560 | Free Cancellation | Rating 6.7 7,111 reviews | |||
| PriceFrom $563 | Free Cancellation | Rating 8.0 8,521 reviews | |||
| PriceFrom $768 | Free Cancellation | Rating 7.1 1,082 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from St. Louis to Ireland?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Ireland. momondo saves you time and could save you money on your trip.
Can I find flights from St. Louis to Ireland with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for St. Louis to Ireland flights to just show those with flexible booking policies.
How can momondo help me find flights from St. Louis to Ireland?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Ireland.
I’m not ready to book a flight from St. Louis to Ireland right now. Can momondo alert me if prices change?
Price alerts on flights to Ireland from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.
Get notified when prices go down
Daily price changes in your inbox - only with Price Alerts.
From?
To?
Email me momondo's favorite deals
By creating a price alert you accept our terms of use and privacy policy.
Find better results for your trip to Ireland
Popular cities in Ireland
Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom $254
Flights to Shannonfrom $396
Flights to Corkfrom $462
Flights to Knockfrom $703
Flights to Donegalfrom $551
Flights to Milltown (Kerry)from $508