$67 Find Cheap Flights from St. Louis to Maryland - Compare and Save

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 9/11. 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.
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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$136
Salisbury
Salisbury2 stops$478
Washington, D.C.
Baltimore1 stop$136
Salisbury
Salisbury2 stops$478

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

Thu, Oct 15 - Wed, Oct 28
Frontier Logo
10:35 am - 6:34 pmSTL  Lambert-St Louis-BWI Baltimore/Washington
6h 59m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
9:20 pm - 9:40 amBWI  Baltimore/Washington-STL Lambert-St Louis
13h 20m1 stop Atlanta Hartsfield-Jackson
$136Frontier
Mon, Oct 12 - Sun, Oct 18
Frontier Logo
10:35 am - 8:57 amSTL  Lambert-St Louis-BWI Baltimore/Washington
21h 22m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
9:29 pm - 9:40 amBWI  Baltimore/Washington-STL Lambert-St Louis
13h 11m1 stop Atlanta Hartsfield-Jackson
$139Frontier
Tue, Oct 20 - Fri, Oct 30
Multiple Airlines Logo
10:35 am - 1:12 pmSTL  Lambert-St Louis-PHL Philadelphia
25h 37m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
6:27 pm - 10:40 amPHL  Philadelphia-STL Lambert-St Louis
41h 13m2 stops Tampa St. Petersburg Atlanta Hartsfield-Jackson
$200Multiple Airlines
Fri, Oct 9 - Mon, Oct 12
Multiple Airlines Logo
10:35 am - 6:15 pmSTL  Lambert-St Louis-PHL Philadelphia
6h 40m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
6:14 pm - 9:40 amPHL  Philadelphia-STL Lambert-St Louis
40h 26m2 stops Tampa St. Petersburg Atlanta Hartsfield-Jackson
$203Multiple Airlines
Sat, Sep 5 - Sun, Sep 6
Delta Logo
5:23 pm - 11:48 pmSTL  Lambert-St Louis-DCA Washington, D.C. Reagan-National
5h 25m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:10 am - 9:37 amDCA  Washington, D.C. Reagan-National-STL Lambert-St Louis
4h 27m1 stop Detroit Metropolitan Wayne County
$257Delta
Sat, Sep 5 - Sun, Sep 6
Delta Logo
1:04 pm - 6:33 pmSTL  Lambert-St Louis-DCA Washington, D.C. Reagan-National
4h 29m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:33 pm - 4:38 pmDCA  Washington, D.C. Reagan-National-STL Lambert-St Louis
5h 05m1 stop Detroit Metropolitan Wayne County
$257Delta
Sun, Sep 6 - Sun, Sep 6
United Airlines Logo
6:00 am - 11:52 amSTL  Lambert-St Louis-IAD Washington, D.C. Dulles Intl
4h 52m1 stop Chicago O'Hare Intl
United Airlines Logo
5:15 pm - 10:00 pmIAD  Washington, D.C. Dulles Intl-STL Lambert-St Louis
5h 45m1 stop Chicago O'Hare Intl
$257United Airlines
Sat, Aug 29 - Sat, Sep 5
Southwest Logo
8:35 am - 11:35 amSTL  Lambert-St Louis-DCA Washington, D.C. Reagan-National
2h 00mnonstop
Southwest Logo
8:15 am - 9:35 amDCA  Washington, D.C. Reagan-National-STL Lambert-St Louis
2h 20mnonstop
$258Southwest
Sat, Sep 5 - Sun, Sep 6
United Airlines Logo
8:40 am - 11:54 amSTL  Lambert-St Louis-IAD Washington, D.C. Dulles Intl
2h 14mnonstop
United Airlines Logo
8:25 am - 9:39 amIAD  Washington, D.C. Dulles Intl-STL Lambert-St Louis
2h 14mnonstop
$258United Airlines
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
1:15 pm - 9:55 pmSTL  Lambert-St Louis-DCA Washington, D.C. Reagan-National
7h 40m2 stops Sarasota Bradenton Intl Orlando
Southwest Logo
6:00 am - 9:25 amDCA  Washington, D.C. Reagan-National-STL Lambert-St Louis
4h 25m1 stop Nashville Intl
$262Southwest
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 October.

Flight prices are below average for this route right now.

Flights to Maryland from St. Louis usually cost between $296 and $496 in October.
The lowest price found in the past 5 days was $136 on Frontier (Oct 15-Oct 28).

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 $289 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 $289.

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 $357 on average. Morning departures are around 22% 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 $546.

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 September, when tickets cost $349 (return) on average. On the other hand, the most expensive months are February and June, when the average cost of round-trip tickets is $493 and $479 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 Wednesday, 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.

Good to know

Low season

February

Cheapest flight

$67
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly with an average 10% increase in price.
Flight from St. Louis to Washington Dulles Airport

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: Philadelphia $278 one-way - $375 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 4217 reviews
8.0Comfort
7.5Entertainment
8.1Boarding
8.6Crew
7.0Food
Airline reviews

Exceptional. The gate crew responded quickly and got me onto this earlier flight as the final passenger, saving me more than four hours of wait time for my reserved flight.

10.0 ExcellentAnonymous, Aug 2026
Read more Southwest reviews

Exceptional. The gate crew responded quickly and got me onto this earlier flight as the final passenger, saving me more than four hours of wait time for my reserved flight.

The flight was delayed due to earlier issues at other airports. The crew was excellent & made it a good trip.

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.

Your survey needs a N/A option. I didn’t use the entertainment or eat food.

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

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.

My luggage was not sent with us. Not sure if this is Envoy Air responsibility but that was a very BAD experience

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.

I know Frontier is a “no-frills” airline. I understand the concept. However, I jumped on some tickets for our family vacation, expecting to play a bit of a game to figure out the family bags and not over spend. In the end, I got the short end of this deal by far. 1. I did not expect them to charge the baggage fee for each direction. It makes the fee look high-ish at a glance, but reasonable. Then when you get to checkout and realize you have to pay it twice to come home with your luggage, it becomes ridiculous. 2. The low checked bag weight limit. I am used to packing a 50lb bag with my preferred airline. Frontier’s artificially low 40lb limit more quickly triggers the extra weight fee, which almost DOUBLES the price of the bag if you go over ($79 for the bag/$75 for the next 10 lbs) 3. The fee for a carry-on bag is the same as a checked bag but with a lower size and weight limit. Make it make sense! 4. The seats are terrible. My 2.5 hour flight almost had me losing my mind. I’m 6’3” and my femurs barely fit in the space provided. My knees had to wiggle just right to jam into the crack next to the armrest of the seat in front of me. The cushioning was thin and inadequate. I am tall but I’m not a freak. These seats are unacceptable. 5. I overheard the woman next to me speaking with the gate agent about being charged a $25 fee for not checking in online - she checked in at the airport counter when she arrived. That’s ridiculous. She was old and in a wheelchair. She had a paper boarding pass, and was obviously not tech savvy. She should not be punished for that. 6. They do not have good placement in the terminals. It was always out on the end or down on a subfloor, and we had to walk out on the tarmac almost every time. In Denver. Their home airport! 7. Every time I loaded a new page on the website while buying my tickets or my bags, it was constantly trying to upsell me on some esoteric bundle. Like, a pop-up every time. Very annoying. 8. No screens in the boarding area (at least where we were) to confirm you’re in the right place. Just static gate number signs. I am sure these are standard practices for Frontier, and I should have read more about them before I purchased tickets, but as a result of this single round trip, I do not plan to ever use this cut-rate airline again. I would rather pay the normal amount for a ticket and be treated like a customer instead of a mark.

Our flight was delayed 2 hours and when they changed the the time to 1 hour I wasn't alerted and when I checked the gate the plane was still there but they already shut the doors so I had to buy another flight.

Great except upon arrival it took them a long time to open the doors

Frontier feels like a family I Worked for Eastern Airlines back in the day and I felt the family vibe that I had then. Thank you

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