$63 Find Cheap Flights from St. Louis to Maryland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Maryland departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Maryland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Maryland, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Maryland, as well as popular online travel agencies
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Cheap Flights from St. Louis to Maryland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Washington, D.C.
Baltimore1 stop$121
Salisbury
Salisbury1 stop$462
Washington, D.C.
Baltimore1 stop$121
Salisbury
Salisbury1 stop$462

Book Cheap St. Louis to Maryland Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Maryland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Maryland

Tue, May 26 - Mon, Jun 1
Frontier Logo
6:33 pm - 7:43 am
STL
-
BWI
12h 10m
1 stop
Frontier Logo
9:23 pm - 5:33 pm
BWI
-
STL
21h 10m
1 stop
$121Frontier
Tue, Jun 16 - Mon, Jun 22
Frontier Logo
6:31 pm - 7:35 am
STL
-
BWI
12h 04m
1 stop
Frontier Logo
9:32 pm - 5:30 pm
BWI
-
STL
20h 58m
1 stop
$124Frontier
Sat, May 9 - Mon, May 11
Multiple Airlines Logo
8:08 pm - 5:37 am
STL
-
PHL
8h 29m
1 stop
Multiple Airlines Logo
8:44 pm - 5:33 pm
PHL
-
STL
21h 49m
2 stops
$170Multiple Airlines
Tue, May 26 - Tue, Jun 23
American Airlines Logo
6:00 am - 12:38 pm
STL
-
DCA
5h 38m
1 stop
American Airlines Logo
8:40 am - 10:12 am
DCA
-
STL
2h 32mnonstop
$247American Airlines
Thu, May 21 - Tue, May 26
Southwest Logo
7:35 am - 3:00 pm
STL
-
DCA
6h 25m
1 stop
Southwest Logo
5:50 pm - 10:35 pm
DCA
-
STL
5h 45m
1 stop
$248Southwest
Tue, May 19 - Sat, May 23
Southwest Logo
8:05 am - 11:05 am
STL
-
DCA
2h 00mnonstop
Southwest Logo
8:00 am - 9:20 am
DCA
-
STL
2h 20mnonstop
$251Southwest
Tue, May 19 - Mon, May 25
United Airlines Logo
9:21 am - 3:58 pm
STL
-
IAD
5h 37m
1 stop
United Airlines Logo
9:00 am - 10:27 am
IAD
-
STL
2h 27mnonstop
$253United Airlines
Thu, Jun 25 - Mon, Jun 29
American Airlines Logo
5:08 am - 8:28 am
STL
-
DCA
2h 20mnonstop
American Airlines Logo
8:00 pm - 9:29 pm
DCA
-
STL
2h 29mnonstop
$255American Airlines
Tue, Jun 9 - Sun, Jun 14
Multiple Airlines Logo
6:31 pm - 10:22 am
STL
-
IAD
14h 51m
1 stop
Multiple Airlines Logo
3:04 pm - 6:36 pm
IAD
-
STL
28h 32m
2 stops
$255Multiple Airlines
Tue, May 19 - Sat, May 23
United Airlines Logo
9:21 am - 3:58 pm
STL
-
IAD
5h 37m
1 stop
United Airlines Logo
5:55 pm - 7:26 pm
IAD
-
STL
2h 31mnonstop
$256United Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Maryland flights

Get data-powered insights and trends into flights from St. Louis to Maryland to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from St. Louis to Maryland?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Maryland departing in May.

What is the cheapest St. Louis to Maryland flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Maryland from St. Louis found in the last 72 hours was to Baltimore, at $285 round-trip. The most popular route is from St. Louis (STL) to Baltimore (BWI), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $285.

What is the cheapest time of day to fly to Maryland?

The average price for all round-trip flights from St. Louis to Maryland depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Maryland is generally in the evening, when round-trip flights cost $334 on average. Morning departures are around 21% more expensive than evening flights, on average. The most expensive time of day to fly to Maryland is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $722.

Can I save money by flying with a layover from St. Louis to Maryland?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $445, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Maryland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Maryland is August, when tickets cost $229 (return) on average. On the other hand, the most expensive months are February and March, when the average cost of round-trip tickets is $361 and $358 respectively.

What’s the cheapest day of the week to fly from St. Louis to Maryland?

The average price of all round-trip flights from St. Louis to Maryland clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Maryland on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from St. Louis to Maryland. For your return ticket, we recommend flying on a Saturday and avoiding Mondays for the best deals.

How far in advance should I book a flight from St. Louis to Maryland?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Maryland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Maryland, you should book around 3 weeks before departure, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$63
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly with an average 11% increase in price.
Flight from St. Louis to Baltimore

FAQs - booking Maryland flights

  • How does KAYAK find such low prices on flights from St. Louis to Maryland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Maryland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Maryland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Maryland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Maryland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from St. Louis to Maryland with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Maryland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from St. Louis to Maryland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Maryland

  • Looking for a cheap flight? 25% of our users found tickets from St. Louis to the following destinations at these prices or less: Washington, D.C. $198 one-way - $322 round-trip; Philadelphia $217 one-way - $429 round-trip

Reviews of the top 4 airlines serving from St. Louis to Maryland

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Maryland. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Maryland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4330 reviews
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
8.1Boarding
Airline reviews

Terrible all around. Left prior review detailing massive delay/cancellation to then rebook travel. Topping on the cake was lost luggage even after travel to ultimate destination was secured on a new plane(s).

2.0 MediocreAnonymous, Apr 2026
SJU - BWI
Read more Southwest reviews

Terrible all around. Left prior review detailing massive delay/cancellation to then rebook travel. Topping on the cake was lost luggage even after travel to ultimate destination was secured on a new plane(s).

The flight was okay. The pilots did an amazing job and kept us updated on the flight. The flight attendants were okay. They found time to be chatty with each other rather than focus on the guests. One of the attendants was a little less warm when asking about my bag I had on my lap that I was using during latter part of the mid- flight. Mind you, it was not the departure descent. I’m respectful to each and every attendant, it was the tone in her voice reminding me to place my carryon bag on the floor. I hope to have a better experience next time.

I am very please with the service received from Southwest. Although there was a refuel stop in Fl before we got the Baltimore. The service and kindness of the staff was excellent.

Southwest continues to do less for more money. Flight attendants used to be fun and friendly. But now it’s like they don’t even see you. Such a shame.

I liked it better when you were truer to your roots Am paying more for less fun

We had a 5 hour delay on the tarmac in Baltimore

Long layover between flights to Long Island from BWI - need better coordination between flights

Snacks are always pretzels. Why can't you also offer peanuts ?

The last 3 flights between BWI and BDL canceled the beverage service mid- way. Just say up front that the fight is too short. Thanks!

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

Landed without a gate ready. Plane is extremely old and dirty.

All the amenities was wonderful, if they could keep their prices that low. I'd fly with them all the time.

Very old plane with no inflight entertainment. I purchased the internet pass and it was nearly unusable.

My tray was broken so i had no place to work or eat except my lap. Flight attendant said I would get an email with some credit or miles, it was a complete waste of time as I could only function at about 20% of normal. I have not received anything yet.

Short trip, no food and therefore no expectation for much interaction with staff who were pleasant and professional. My critique is on comfort of the seats. Exit rows and comfort seats do not provide enough personal space for 3 side-by-side seats, especially when in the middle row. Some passengers are not considerate of the middle seat and there should be signs that state something to the effect of: "please consider giving middle seats use of the armrests."

My flight yesterday evening was delayed 3.5 hours with no water or food service. Poor experience

Returned home with a blood clot from flight homes and the uncomfortable aircraft I was on.

Original flight was on time, then late, then changed gates...4 times. Once our newest plane came in, it was fine.

The crew was very kind, but no in-flight entertainment monitors and a 2 hour and 30 minute delay was extremely frustrating.

Everything was delayed and the staff sent me to the wrong gate, causing me to miss one of my flights. I arrived at my destination 6 hours later than I was supposed to.

Got home at 3am after deboarding the plane. No compensation offered by American

Delayed flight. Missed connection, AA put us on a later connecting flight. The connection flight was delayed 4 times and we had to deplane. Didnt get home until 3am, when I was supposed to be home at 8:30p. Zero compensation offered from American. I would not fly them again.

The seats need better cushioning for a nearly 5-hour flight, it was a bit uncomfortable. I'm glad American has free wi-fi but there were was a bout 30 minutes in the middle of the flight when there was no connection which was frustrating.

My original flight got delayed day of so I had to rebook it from one layover to two layovers. The flight also left earlier which was a slight inconvenience but manageable. Then my first connection flight got delayed 3 separate times for a total of 2 hours delayed, causing me to miss my second connection flight back to Santa Barbara. Now, because of this missed flight, I am missing my college classes that I pay for.

Flight: Started on time. Comfortable flight. Arrived on time. Crew: Very cordial and helpful. Drinks and snack was served with a smile. Overall enjoyed the trip. Regards, Hari Doss Chanchala Doss

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Everything you need to know for your flight from St. Louis to Maryland

Information on your arrival and departure airports