Question 1

Why should I use momondo to find a flight deal to St. Louis?

Accepted Answer

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis.

Question 2

Can I find flights to St. Louis with flexible booking policies on momondo?

Accepted Answer

Flights to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

Question 3

How can momondo help me find flights to St. Louis?

Accepted Answer

Once all potential 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.

Question 4

I’m not ready to book a flight to St. Louis right now. Can momondo alert me if prices change?

Accepted Answer

Price alerts on flights to 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.

Question 5

Is there an alternative airport near St. Louis?

Accepted Answer

Belleville Airport, Marion Williamson County Airport or Springfield Capital Airport can be an alternative airport used for travel to St. Louis.

Question 6

Which airlines fly to St. Louis?

Accepted Answer

When flying to St. Louis from Ireland, momondo travellers will most often fly with that one popular airline: American Airlines. Depending on what airport in Ireland you fly from, you may be able to find flights with that popular airline.

Question 7

American Airlines Flights to St. Louis

Accepted Answer

American Airlines will jet to St. Louis around 31 times in an average week. Where you fly from will dictate what kind of deals you can get for American Airlines, but prices as low as €126 have been found from Dublin to St. Louis. American Airlines has scored 7.2/10 in momondo user reviews.

Question 8

How long does it take to fly to St. Louis?

Accepted Answer

If you’re flying from a popular airport in Ireland, such as Dublin or Cork, and flying into St. Louis, then you can expect flight times to average 11h 23m and , respectively.

Question 9

When did momondo last update prices for flights to Lambert-St Louis Airport?

Accepted Answer

Prices for flights to Lambert-St Louis Airport were last updated today.

Question 10

How many operators does momondo search for flights to Lambert-St Louis Airport?

Accepted Answer

The number of operators available for flights to Lambert-St Louis Airport is 1 as of December 2025.

Question 11

How old do you have to be to fly to Lambert-St Louis Airport?

Accepted Answer

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 to Lambert-St Louis Airport.

Question 12

What documentation or ID do you need to fly to Lambert-St Louis Airport?

Accepted Answer

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.

Question 13

What is the cheapest time of day to depart on your flight to St. Louis?

Accepted Answer

At midday is the cheapest time of day to fly from Ireland to St. Louis when you can find flight prices for as low as €680. 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 €835.

Question 14

What is the cheapest month to fly to St. Louis?

Accepted Answer

The cheapest month to fly to St. Louis from Ireland is in February. Flight prices, which tend to average around €683, are often lower during this time because this is during the off-season. The month of August is another great option to travel to St. Louis, with average flight prices from Ireland averaging around €700.

Question 15

What is the cheapest day to depart on your flight to St. Louis?

Accepted Answer

On average, the least expensive day to fly to St. Louis from Ireland is on a Thursday. momondo users have found tickets for Thursday departures for as low as €727. 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 Ireland to St. Louis for around €905.

CHEAPEST MONTH TO FLY TO ST. LOUIS FROM DUBLIN	February	18% cheaper	Flying from Dublin to St. Louis costs on average just €683 in February
MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM DUBLIN	May	16% more expensive	It costs about €967 for flights to St. Louis from Dublin in May
MOST POPULAR MONTH TO FLY TO ST. LOUIS FROM DUBLIN	September	466% more users visited	More momondo users searched in flights to St. Louis from Dublin in September than any other month

Best One-Way Price	€282
Best Round-Trip Price	€718
Fastest flight time	48h 16m
Popular in	May

€282 Cheap flights to St. Louis

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to St. Louis departing on 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frequently asked questions about flying to St. Louis

Is there an alternative airport near St. Louis?

How long does it take to fly to St. Louis?

When did momondo last update prices for flights to Lambert-St Louis Airport?

How many operators does momondo search for flights to Lambert-St Louis Airport?

How old do you have to be to fly to Lambert-St Louis Airport?

What documentation or ID do you need to fly to Lambert-St Louis Airport?

Why use momondo?

Why should I use momondo to find a flight deal to St. Louis?

Can I find flights to St. Louis with flexible booking policies on momondo?

How can momondo help me find flights to St. Louis?

I’m not ready to book a flight to St. Louis right now. Can momondo alert me if prices change?

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