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STL - BWI

Find cheap flights from St. Louis to Baltimore from $60

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 Baltimore 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
0 bags
Sat 5/25
Sat 6/1

Search hundreds of travel sites at once for deals on flights to Baltimore

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Baltimore, 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 Baltimore, as well as popular online travel agencies
In the last 7 days travelers have searched 44,979,812 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Cheap flight deals from St. Louis to Baltimore (STL-BWI)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Baltimore 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 and deals for you by selecting your travel dates.
Choose your dates
2:35 pm - 9:25 pmSTL-BWI
5h 50m1 stop
9:17 pm - 4:55 pmBWI-STL
20h 38m1 stop
Tue, May 7 - Tue, May 14
7:16 pm - 7:18 amSTL-BWI
11h 02m1 stop
10:00 pm - 7:08 amBWI-STL
10h 08m1 stop
$97Frontier
Find Deal
Thu, May 9 - Thu, May 16
2:35 pm - 9:25 pmSTL-BWI
5h 50m1 stop
9:33 am - 10:46 amBWI-STL
26h 13m2 stops
$98Spirit Airlines
Find Deal
Tue, May 7 - Tue, May 14
2:35 pm - 9:25 pmSTL-BWI
5h 50m1 stop
10:12 pm - 5:29 pmBWI-STL
20h 17m1 stop
$104Spirit Airlines
Find Deal
Tue, May 7 - Wed, May 15
9:53 pm - 8:27 pmSTL-BWI
21h 34m1 stop
10:00 pm - 7:08 amBWI-STL
10h 08m1 stop
$108Frontier
Find Deal
Wed, May 8 - Thu, May 16
11:39 am - 12:51 amSTL-BWI
12h 12m1 stop
10:12 pm - 5:29 pmBWI-STL
20h 17m1 stop
$109Spirit Airlines
Find Deal
Sat, May 11 - Wed, May 29
9:53 pm - 8:27 pmSTL-BWI
21h 34m1 stop
9:17 pm - 4:55 pmBWI-STL
20h 38m1 stop
$110Frontier
Find Deal
Wed, May 8 - Tue, May 14
11:39 am - 12:51 amSTL-BWI
12h 12m1 stop
10:12 pm - 5:29 pmBWI-STL
20h 17m1 stop
$114Spirit Airlines
Find Deal
Sat, May 11 - Wed, May 15
2:35 pm - 9:25 pmSTL-BWI
5h 50m1 stop
8:20 am - 5:29 pmBWI-STL
34h 09m2 stops
$118Spirit Airlines
Find Deal
Tue, May 7 - Wed, May 15
2:35 pm - 9:25 pmSTL-BWI
5h 50m1 stop
12:33 pm - 9:25 amBWI-STL
21h 52m1 stop
Tue, May 7 - Fri, May 17

Flights from St. Louis to Baltimore - Travel Insights & Trends

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

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

The average price of all flights from St. Louis to Baltimore clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Baltimore on a Thursday and more expensive on a Sunday. On your return trip to St. Louis, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Baltimore, 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 Baltimore is October, where tickets cost $264 on average. On the other hand, the most expensive months are March and May, where the average cost of tickets is $503 and $423 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Baltimore, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to Baltimore, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 26 days before departure.

Which airlines provide the cheapest flights from St. Louis to Baltimore?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on Frontier ($60) and Spirit Airlines ($108). The cheapest round-trip tickets were found on Frontier ($97) and Spirit Airlines ($98).

How many flights are there between St. Louis and Baltimore per day?

Each day, there are between 3 and 5 nonstop flights that take off from St. Louis and land in Baltimore, with an average flight time of 2h 02m. The most common departure time is 6:00 am and most flights take off in the morning. Each week, there are 28 flights. The most frequent day of departure is Sunday, when 18% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between St. Louis and Baltimore?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

What’s the earliest departure time from St. Louis to Baltimore?

Early birds can take the earliest flight from St. Louis at 6:00 am and will be landing in Baltimore at 9:00 am.

What’s the latest departure time from St. Louis to Baltimore?

If you prefer to fly at night, the latest flight from St. Louis to Baltimore jets off at 8:45 pm and lands at 11:45 pm.

Good to know

Low season

February

High season

September

Cheapest flight

$60
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from St. Louis to Baltimore

When to book flights from St. Louis to Baltimore

Are your dates flexible? Find out the best times to travel from St. Louis to Baltimore based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Baltimore

  • What is the cheapest flight from St. Louis to Baltimore?

    In the last 3 days, the lowest price for a flight from St. Louis to Baltimore was $60 for a one-way ticket and $95 for a round-trip.

  • Do I need a passport to fly between St. Louis and Baltimore?

    A passport is not required to fly from St. Louis to Baltimore.

  • Which airports will I be using when flying from St. Louis to Baltimore?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Baltimore, also known as Baltimore/Washington.

  • Which aircraft models fly most regularly from St. Louis to Baltimore?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the St. Louis to Baltimore flight route.

  • On which days can I fly direct from St. Louis to Baltimore?

    There are nonstop flights from St. Louis to Baltimore on a daily basis.

  • Which is the best airline for flights from St. Louis to Baltimore, American Airlines or Spirit Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Baltimore are American Airlines and Spirit Airlines. With an average price for the route of $437 and an overall rating of 7.3, American Airlines is the most popular choice. Spirit Airlines is also a great choice for the route, with an average price of $224 and an overall rating of 6.4.

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

    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 Baltimore.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Baltimore from St. Louis 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 Baltimore?

    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 to Baltimore with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and BWI can sometimes prove cheaper using this method.

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

    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 to Baltimore from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from St. Louis to Baltimore?

Find which airlines fly direct from Lambert-St Louis to Baltimore/Washington, which days they fly and book direct flights.

Nonstop departures

Lambert-St Louis to Baltimore/Washington

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Nonstop returns

Baltimore/Washington to Lambert-St Louis

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights
See more direct flights

Top 5 airlines serving from St. Louis to Baltimore

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Baltimore. 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 Baltimore? 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
DeltaOverall score based on 10975 reviews
8.0entertainment
7.4food
7.9comfort
8.6crew
8.2boarding
Airline reviews

Delta is one of the best airlines I have flown

10.0 ExcellentKellie, Apr 2024ANC - SEA
Read more about Delta reviews

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

Horrible. This was not first class. This was a connecting flight whi h was late. My original flight never came. I hated the fact that delta gave me a connecting flight from New York to Orlando Florida. No meals and the television screens were not working. There wasn't even any power to charge your phones. This is NOT FIRST CLASS DELTA!!! Do better next time!

This flight was ridiculous. I had to have a connecting flight from New York to orlando Florida??? The flight left late and because it was a short flight there was no first class amenities. I had one alcohol drink. The flight crew was fine, but it sure did not feel like first class. Delta to me dropped the ball by giving me a connecting flight. By the time we got to Raleigh we would have missed the next flight. Lucky for me the flight never came so now I was stuck waiting for a later flight that came in late also.

Our flight was delayed in Atlanta. The staff could have gave us an explanation for the delay and how long it would be.

I liked the ease of checking in, luggage check in, wheel chair assistance, boarding and flight.

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

So so. Terrible aircraft choice for that leg of the flight.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

they made me check my carryon. There was space in the overhead bins.

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

The Flight attendant had an attitude and didn't allow anyone any time to prepare for landing despite being absent throughout the entire trip

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

The flight was great but board was a nightmare. The gate was changed 4 times during the layover period

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Cold air blew constantly on my legs almost making me numb.

Missed the flight because of them and up geting a rental car

Delayd flight out of atl as always miss my conection in dfw no flight untill next day

Not much seat room, but that was unexpected. But the seat headrest was very uncomfortable.

First the good, everyone was friendly and efficient. Flight was smooth and plane was very clean and new. Now the bad, seats have almost no padding on your behind. I was in exit row so I had tons of leg room for a 6' 2" bean pole with long legs. Everything was extra - water, soda, snacks everything besides oxygen. Ya get what you pay for, and my flight was cheap as you could ever want it, so no worries.

First the good, everyone was friendly and efficient. Flight was smooth and plane was very clean and new. Now the bad, seats have almost no padding on your behind. I was in exit row so I had tons of leg room for a 6' 2" bean pole with long legs. Everything was extra - water, soda, snacks everything besides oxygen. Ya get what you pay for, and my flight was cheap as you could ever want it, so no worries. They dont really bother you about carry-on size, I brought a descent sized backpack and they didnt even check.

Spirit canceled the flight in March and never notified me!

Seats suck, not enough room, overcrowded planes, hectic situation all together.

Pretty good. Would’ve been excellent if we would have left on time and the crew wasn’t late.

I do not like the customer service, I had an emergency and needed to cancel a pet reservation right after I had booked it and they would not do anything but issue a credit. I haven't flown in years as I have 7 kids and don't have spare time. I want my $125 back on my card please

Spirit airline tries to screw you at every opportunity. Spirit wanted 65$ for an extra pound in the suitcase Made me open the suitcase at the counter to remove 1 pound. Staff very cold and rude Will never fly spirit again and will recommend same to family and friends

Delayed..4 times...completely disorganized boarding. After 5 hours they scrambled to move ppl off plane bc they overbooked. Then they didn't have a cabin crew. WiFi on plane didn't work. Zero amenities. Once we boarded we sat on tarmac for an hour. Explore all alternate options including purchasing a pair of hiking boots and walking to your destination instead of flying spirit.

what I like about Spirit is that the pilot and crew are good communicators. The plane itself - well, its a budget airline and you get what is expected, But I generally just feel safer, somehow, when I know more about what is going on - and Spirit has always done a good job of telling me what is going on: why the delay, why the turbulence, why this and that... and that means a lot to me.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

Book cheap flights from St. Louis to Baltimore

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Baltimore found on KAYAK in the last 72 hours.
5/13Mon
1 stopFrontier
22h 16mSTL-BWI
$60
5/14Tue
2 stopsFrontier
21h 26mSTL-BWI
$65
6/6Thu
1 stopSpirit Airlines
13h 22mSTL-BWI
$108
5/4Sat
1 stopSpirit Airlines
5h 51mSTL-BWI
$119
5/20Mon
2 stops
31h 51mSTL-BWI
$124
5/6Mon
3 stops
34h 08mSTL-BWI
$125
7/8Mon
1 stopSun Country Air
27h 08mSTL-BWI
$138
7/7Sun
1 stopSun Country Air
15h 47mSTL-BWI
$140
6/6Thu
2 stopsAmerican Airlines
7h 57mSTL-BWI
$457
4/29Mon
2 stopsAmerican Airlines
10h 02mSTL-BWI
$604

Search by stops

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Search by price

Last minute flights from St. Louis to Baltimore

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Baltimore that are departing in the next 10 days.
4/30Tue
multi-stop
29h 31mSTL-BWI
5/7Tue
multi-stop
21h 21mBWI-STL
$187
4/30Tue
multi-stopFrontier
17h 39mSTL-BWI
5/11Sat
multi-stopFrontier
11h 13mBWI-STL
$189
4/30Tue
multi-stop
30h 58mSTL-BWI
5/7Tue
multi-stop
21h 21mBWI-STL
$201
4/30Tue
multi-stopFrontier
17h 39mSTL-BWI
5/8Wed
multi-stopFrontier
23h 09mBWI-STL
$216
4/30Tue
multi-stopFrontier
17h 39mSTL-BWI
5/2Thu
multi-stopFrontier
10h 56mBWI-STL
$219
4/30Tue
multi-stop
29h 31mSTL-BWI
5/7Tue
multi-stop
26h 16mBWI-STL
$220
4/30Tue
multi-stopSpirit Airlines
5h 50mSTL-BWI
5/2Thu
multi-stopSpirit Airlines
14h 29mBWI-STL
$282
4/30Tue
multi-stopSpirit Airlines
36h 34mSTL-BWI
5/2Thu
multi-stopSpirit Airlines
14h 29mBWI-STL
$309
4/29Mon
multi-stopAmerican Airlines
5h 00mSTL-BWI
4/30Tue
multi-stopAmerican Airlines
7h 17mBWI-STL
$507
4/28Sun
multi-stopAmerican Airlines
6h 17mSTL-BWI
4/30Tue
multi-stopAmerican Airlines
5h 11mBWI-STL
$615

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St. Louis - Baltimore Flights

Departure:

St. Louis (STL)United States

Destination:

Baltimore (BWI)United States

Return flight deals:

Baltimore - St. Louis

Cabin classes: