Cheap flights from Pennsylvania to St. Louis from $54
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Pennsylvania to St. Louis departing on 3/4. 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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How to get the cheapest flight ticket from Pennsylvania 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 cheapest month to fly to St. Louis?
In general, June is the cheapest month to fly from Pennsylvania to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $201. The month of July is another great option to travel to St. Louis, with average flight prices from Pennsylvania averaging around $201.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $226. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $338. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from Pennsylvania at noon is the least expensive time of day to depart. momondo users have found prices as low as $244 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $348 per ticket.
What is the cheapest Pennsylvania to Lambert-St Louis flight route?
Fly from Philadelphia to Lambert-St Louis for the best Pennsylvania - Lambert-St Louis flight prices
How far in advance should I book a flight to St. Louis?
The best time to book a flight to St. Louis from Pennsylvania is 48 days out, which is when prices tend to be around $330. In the past 72 hours, momondo users found flights from Pennsylvania to St. Louis for as low as $143.
What cabin class options are available on Pennsylvania to Lambert-St Louis flights?
There are 3 cabin classes available to choose from on Pennsylvania to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Pennsylvania to Lambert-St Louis?
Frontier, Spirit Airlines, and Southwest are the most popular carriers operating from Pennsylvania to Lambert-St Louis
What airlines fly to St. Louis?
American Airlines, Frontier and Southwest are the top three most popular airlines that fly to St. Louis from Pennsylvania according to our data. American Airlines is the first choice among our users, with 72% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
How many flights depart from Pennsylvania to St. Louis on average per day?
As of January 2025, there are 31 flights per day flying from Pennsylvania to St. Louis. The most common time of day flights depart is 7:00PM, with 61% of flights taking off in the evening.
How many flights depart from Pennsylvania to St. Louis on average per week?
As of January 2025, there are 222 flights per week flying from Pennsylvania to St. Louis. The most common day of the week flights depart is Fri, with 18% of flights taking off on this day.
Cheap Pennsylvania to St. Louis flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Pennsylvania to St. Louis
When did momondo last update prices for flights from Pennsylvania to Lambert-St Louis Airport?
Prices for flights from Pennsylvania to Lambert-St Louis Airport refresh daily.
How many operators does momondo search for flights from Pennsylvania to Lambert-St Louis Airport?
As of January 2025, there are 6 operators available to choose from for flights from Pennsylvania to Lambert-St Louis Airport.
How old do you have to be to fly from Pennsylvania to Lambert-St Louis Airport?
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 Pennsylvania to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Pennsylvania to St. Louis?
Based on momondo bookings for flights between Pennsylvania and St. Louis, the leading plane model is Boeing 737-700 Passenger/BBJ1 (winglets), making up 18.27% of the total bookings. Other popular models include Airbus A319 with 15.38%, Boeing 737 MAX 8 with 13.11%, and Boeing 737-800 Passenger/BBJ2 (winglets) with 11.45%.
Best airlines flying from Pennsylvania to St. Louis
Compare and see reviews for airlines that fly from Pennsylvania to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $52 | Free Cancellation | Rating 6.0 3,429 reviews | |||
| PriceFrom $140 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $169 | Free Cancellation | Rating 6.3 8,075 reviews | |||
| PriceFrom $196 | Free Cancellation | Rating 7.4 8,944 reviews | |||
| PriceFrom $200 | Free Cancellation | Rating 8.0 8,501 reviews | |||
| PriceFrom $246 | Free Cancellation | Rating 8.1 4,650 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Pennsylvania to St. Louis?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Pennsylvania to St. Louis. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Pennsylvania to St. Louis with flexible booking policies on momondo?
momondo does allow users to show only those flights to St. Louis from Pennsylvania which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Pennsylvania to St. Louis?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Pennsylvania.
I’m not ready to book a flight from Pennsylvania to St. Louis right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to St. Louis from Pennsylvania. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.