$72 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 7/27. 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$144
Salisbury
Salisbury1 stop$444
Washington, D.C.
Baltimore1 stop$144
Salisbury
Salisbury1 stop$444

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

Wed, Jul 15 - Tue, Jul 28
Frontier Logo
4:57 pm - 11:17 pm
STL
-
BWI
5h 20m
1 stop
Frontier Logo
8:36 am - 5:37 pm
BWI
-
STL
10h 01m
1 stop
$144Frontier
Fri, Aug 7 - Wed, Aug 12
Frontier Logo
4:57 pm - 7:26 am
STL
-
BWI
13h 29m
1 stop
Frontier Logo
9:32 pm - 5:37 pm
BWI
-
STL
21h 05m
1 stop
$146Frontier
Thu, Aug 6 - Mon, Aug 10
Southwest Logo
10:10 am - 6:00 pm
STL
-
DCA
6h 50m
2 stops
Southwest Logo
4:35 pm - 10:05 pm
DCA
-
STL
6h 30m
1 stop
$270Southwest
Thu, Oct 15 - Mon, Oct 19
Delta Logo
3:42 pm - 10:15 pm
STL
-
DCA
5h 33m
1 stop
Delta Logo
7:00 am - 10:48 am
DCA
-
STL
4h 48m
1 stop
$271Delta
Thu, Oct 1 - Mon, Oct 5
Delta Logo
6:00 am - 11:31 am
STL
-
IAD
4h 31m
1 stop
Delta Logo
7:16 pm - 11:42 pm
IAD
-
STL
5h 26m
1 stop
$271Delta
Fri, Jul 24 - Sat, Aug 8
Multiple Airlines Logo
4:57 pm - 4:34 pm
STL
-
IAD
22h 37m
1 stop
Multiple Airlines Logo
9:05 pm - 1:21 pm
IAD
-
STL
41h 16m
2 stops
$274Multiple Airlines
Mon, Jul 27 - Mon, Aug 3
American Airlines Logo
6:43 am - 9:46 am
STL
-
DCA
2h 03mnonstop
American Airlines Logo
8:00 pm - 9:21 pm
DCA
-
STL
2h 21mnonstop
$275American Airlines
Mon, Jul 27 - Sat, Aug 1
American Airlines Logo
5:02 pm - 8:15 pm
STL
-
DCA
2h 13mnonstop
American Airlines Logo
6:05 pm - 7:32 pm
DCA
-
STL
2h 27mnonstop
$276American Airlines
Mon, Jul 20 - Mon, Jul 27
Southwest Logo
7:55 pm - 10:55 pm
STL
-
DCA
2h 00mnonstop
Southwest Logo
6:55 pm - 10:50 pm
DCA
-
STL
4h 55m
1 stop
$277Southwest
Fri, Jul 10 - Fri, Jul 17
Multiple Airlines Logo
2:00 pm - 2:02 pm
STL
-
IAD
23h 02m
2 stops
Multiple Airlines Logo
8:33 pm - 8:57 am
IAD
-
STL
13h 24m
1 stop
$277Multiple 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 July.

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 5 days was to Baltimore, at $359 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 5 days was $359.

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 $348 on average. Morning departures are around 20% 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 $559.

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 December, when tickets cost $129 (return) on average. On the other hand, the most expensive months are January and November, when the average cost of round-trip tickets is $351 and $239 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 Tuesday, 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 49% 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$72
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 12% 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. $168 one-way - $329 round-trip; Philadelphia $233 one-way - $405 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.
7.9
SouthwestOverall score based on 4245 reviews
8.6Crew
8.1Boarding
7.5Entertainment
8.0Comfort
7.0Food
Airline reviews

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

6.0 GoodAnonymous, Mar 2026
STL - HOU
Read more Southwest reviews

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

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

Very good. Sad to learn Southwest is going start to charge for bags

Exceptional crew! Friendly and professional. Pleasant attitude and treated everyone with respect.

The flight was promptly on schedule and Southwest delivered everything they promised. No excuses for any shortfalls just 100% ownership of their responsibilities and business. The boarding and seating policy is a complete shambles. What started out as a great idea when Southwest first hit the market has been turned into a disaster due to the lack of integrity in many of the people who fly Southwest and take advantage of Southwest generosity at the expense of their fellow passengers.

Crew was excellent - Plane was fine. Media was good, could use more kid shows; Not a fan of the brownie brittle -- snack could be slightly better.

Left on time and arrived early. Brand new plane and no parts missing. Comfortable seats. The actual Captain spoke prior to the flight and reassured everyone about safety. Crew was so nice and fun. Perfect flight!

Everything went smoothly and the plane wasn’t full. It was delayed though. The delay was increased due to a crew change which was frustrating.

Love Southwest! Always a good trip with a happy crew who goes out of their way to be kind and fun.

friendly staff for the most part. they thought we were going to have bad turbulence so no drink service. there wasn't any turbulence. Iwish you had a choice of snacks

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Delta has too many delays now days. It is 1:06 am now. I was supposed to land in Norfolk at 10:30 pm. I got re-booked through Detroit and I’m still in Detroit. I hope to be landed in Norfolk by 3am. I’ve been in airports for 12 hours as of right now. There is a weather delay now but most delays lately have been maintenance.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

Service was good for such a short flight. Small plane but smooth flight.

The plane smelled like a sewer. Multiple passengers complained. It’s a safety and quality issue to clean these planes.

Could not hear any of the announcements. The speakers seemed out of service. I wish the entertainment system would allow me to watch on my own iPad than the airplane ‘s old display.

We were delayed 2 hours leaving STL. I had 20 mins from when we landed in SLC terminal A to make it to SLC terminal B. I had to actually run! thankfully I made my flight but 3/4 legs were delayed to some capacity.

American delayed the flight for a crew rest period. The delay occurred late in the evening - the earliest i can find is 10:20 pm. With a 6 am flight anyone on the flight would have already have been asleep (unless you are insane, a vampire or on drugs) and at least for me i was already on the way to the airport at 445 am the next morning when i discovered they delayed the flight until 9 am. Given the incoming flight was in the air at 6 pm the evening before this should have been figured out a lot more timely that was there only crew to use. Just frustrating given there is no consideration for customer experience anymore in flying.

Good crew and flight was on time. It’s a small plane with limited overhead luggage space. They said the overhead space was full and I had to check my bag. There was still space when I got on. Waiting for my checked luggage added 30 minutes to my trip. Not the end of the world but also not great.

Trip delayed for 2 hours because of rain. We boarded and have to get down the flight and reboard again.

No enough space plus only allowing one laggage instead of two like other airlines.

Qatar airways ,boarding arrangements at Hamid international airport could been better

Two flight changes before the scheduled flight. On the day of the flight, the flight was delayed, which caused the connecting flight to be missed. Then, I was directed to another airport (CUN) and traveled to Tulum. American gave a $12 voucher for lunch. The least expensive item on the menu at a Mexican restaurant was $9.99. Driving to Tulum was a bad auto crash, and traffic was delayed two-plus hours. The bottom line is that we should have been at the hotel at noon, but it ended up at 11:30 PM.

Miami lounges were overcrowded and we were unable to get in. We only had a short time. But the banks are too tight in all American hubs

Overall boarding and debarking is a joke. I dont even bring luggage anymore on trips because you can never allow them to be place then in the overhead bin or you have to pay or you check them which is even worse having to wait for your luggage on the tarmac.

First time flying internationally with AA and probably my last. Not military friendly at all. Didn't allow free checked bag for military family members (dependents) on orders like other airlines. We were charged $100 for baggage weight overage (5 lbs!)even though we had military orders allowing us extra.. Didn’t allow military members to board early. Inefficient and long wait time to board. Seats are smaller and more uncomfortable than other airlines.. no drink service for over 7 hrs of flight! After initial meal was served, the crew never offered a snack or drinks until the breakfast's was served 1 1/2 hrs before landing. Overall expensive and poor experience for the entire flight.

Boarding process was good. I was assigned the most rear (non-reclining) seat in both directions, which wasn't great.

Crew was kind of grumpy and there was no beverage service at all. Sodas were $4. Disappointing.

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

The staff at the check in counter was so rude. Made you feel Incompetent

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Inbound plane was on time and flight departed on time with no issues while boarding.

After boarding and un-boarding twice over 6+hours, the flight was canceled.

The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.

30 minute delay due to boarding and settling of a family.

I have come to accept Frontier as an absolute no-frills airline, paying for everything I want. A 4.5-hour flight should provide me with a complimentary beverage—rather, $4.9x for a soda. Or a bottle of water ought to be extended at no cost. 4 beers are on the menu, but only 1 type of beer is available (at $9.95). Also, so many restrictions to using a voucher from Barclay‘s Credit Card. Finally, try to reach a live agent for Frontier- impossible!

Flight was fine, but the legroom between seats for taller passengers is very tight and bad on the knees. I t is very hard to find an angle, that works, especially on a long flight!!!

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

Information on your arrival and departure airports