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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?
In general, August is the cheapest month to fly from Dublin to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $821. The month of February is another great option to travel to St. Louis, with average flight prices from Dublin averaging around $835.
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?
The straight-line distance from Dublin to Lambert-St Louis is 3909.9 mi. A reasonable flight in good conditions will take 10h 12m.
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 old do you have to be to fly from Dublin Airport to Lambert-St Louis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 required for your trip to Lambert-St Louis Airport 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 Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Dublin to St. Louis?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Dublin to St. Louis. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Dublin to St. Louis with flexible booking policies on momondo?
momondo does allow users to show only those flights to St. Louis from Dublin which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Dublin to St. Louis?
Once all potential Dublin to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Dublin to St. Louis right now. Can momondo alert me if prices change?
Price alerts on flights to St. Louis from Dublin 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.