Cheap flights from Dublin to St. Louis from €346
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Dublin to St. Louis departing on 22/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise 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 Dublin to St. Louis
Cheap return flights
Cheap one-way flights
KLM flights from Dublin to St. Louis
Our best KLM deals on Dublin to St. Louis flight tickets
Air Canada flights from Dublin to St. Louis
Our best Air Canada deals on Dublin to St. Louis flight tickets
See travel insights to St. Louis from
How to get the cheapest flight ticket from Dublin to St. Louis
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
What is the typical price of a round-trip flight between Dublin and St. Louis?
What is the cheapest month to fly to St. Louis?
The cheapest month to fly to St. Louis from Dublin is in August. Flight prices, which tend to average around €710, are often lower during this time because this is during the off-season. The month of February is another great option to travel to St. Louis, with average flight prices from Dublin averaging around €723.
What is the cheapest day to depart on your flight to St. Louis?
On average, the least expensive day to fly to St. Louis from Dublin is on a Thursday. momondo users have found tickets for Thursday departures for as low as €738. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Dublin to St. Louis for around €918.
What is the cheapest time of day to depart on your flight to St. Louis?
At midday is the cheapest time of day to fly from Dublin to St. Louis when you can find flight prices for as low as €690. Flying to St. Louis at midday is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive, with an average ticket price of €847.
How have Dublin to St. Louis flight prices changed over time?
As of June 2025, prices for Dublin to St. Louis flights are approximately 34% cheaper when compared to flights at the same time last year.
When to book flights from Dublin to St. Louis
Cheap Dublin to St. Louis (DUB to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Dublin to St. Louis
How far is Dublin to Lambert-St Louis by plane?
There are 6292.4 km between Dublin and Lambert-St Louis. Flights usually cover this in 12h 26m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Dublin Airport to Lambert-St Louis Airport?
Prices for flights from Dublin Airport to Lambert-St Louis Airport are updated daily.
How many operators does momondo search for flights from Dublin Airport to Lambert-St Louis Airport?
As of June 2025, there are 2 operators available to choose from for flights from Dublin Airport to Lambert-St Louis Airport.
How old do you have to be to fly from Dublin Airport to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Dublin Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Dublin to St. Louis?
Based on momondo bookings for flights between Dublin and St. Louis, the leading airline is Air Canada, making up 56% of the total bookings. Other popular airlines include American Airlines with 44%.
Best airlines flying from Dublin to St. Louis
Compare and see reviews for airlines that fly from Dublin to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom €128 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom €624 | Free Cancellation | Rating 7.1 9,549 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Dublin to St. Louis?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Dublin to St. Louis. momondo saves you time and could save you money on your trip.
Can I find flights from Dublin to St. Louis with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to St. Louis from Dublin with this policy.
How can momondo help me find flights from Dublin to St. Louis?
momondo provides multiple filters to help you find the best flight to St. Louis from Dublin. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Dublin to St. Louis right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Dublin to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.