$63+ Cheap flights from St. Louis (STL) to Maryland
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BWI
Aug 2 — Aug 91
Round-trip
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from St. Louis to MarylandExplore the most affordable flight options available from St. Louis to Maryland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2026.
Explore the most affordable flight options available from St. Louis to Maryland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/254:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Tue 7/288:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 7/1![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/224:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Tue 7/288:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 7/2![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:35 am
STL
- BWI
1 stop7h 01m
Frontier
Sat 9/268:00 am
BWI
- STL
1 stop26h 40m
Frontier
Deal found 7/1![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:34 pm
STL
- BWI
1 stop20h 00m
Frontier
Tue 7/289:37 pm
BWI
- STL
1 stop12h 20m
Frontier
Deal found 6/30![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/274:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Tue 7/287:07 pm
BWI
- STL
1 stop14h 50m
Frontier
Deal found 7/2![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/244:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Tue 7/288:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 7/2![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/34:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Thu 8/139:32 pm
BWI
- STL
1 stop12h 25m
Frontier
Deal found 7/1![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Thu 8/209:32 pm
BWI
- STL
1 stop20h 50m
Frontier
Deal found 7/1![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Tue 8/48:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 6/28![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:35 am
STL
- BWI
1 stop13h 09m
Frontier
Tue 10/139:29 pm
BWI
- STL
1 stop13h 11m
Frontier
Deal found 6/29![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Wed 7/299:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 6/28![Frontier logo]()
$147
This Trip.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/204:57 pm
STL
- IAD
1 stop4h 58m
Frontier
Wed 7/229:50 am
IAD
- STL
1 stop9h 15m
Frontier
Deal found 6/28![Frontier logo]()
$270
Best flights from St. Louis to MarylandDiscover carefully curated flight deals from St. Louis to Maryland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2026.
Discover carefully curated flight deals from St. Louis to Maryland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2026.
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:30 am
STL
- BWI
Nonstop2h 00m
Southwest
Sat 10/106:15 am
BWI
- STL
1 stop4h 10m
Southwest
Deal found 6/29![Southwest logo]()
$269
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:05 am
STL
- BWI
1 stop6h 23m
Delta
Mon 9/286:35 pm
BWI
- STL
1 stop6h 07m
Delta
Deal found 6/28![Delta logo]()
$269
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/88:43 am
STL
- IAD
Nonstop2h 12m
United Airlines
Mon 8/1010:10 pm
IAD
- STL
Nonstop2h 22m
United Airlines
Deal found 6/28![United Airlines logo]()
$323
This KAYAK deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:54 am
STL
- BWI
1 stop7h 20m
American Airlines
Wed 8/127:24 pm
BWI
- STL
1 stop4h 16m
American Airlines
Deal found 7/1![American Airlines logo]()
$354
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/810:45 am
STL
- BWI
1 stop4h 50m
Southwest
Sat 8/159:40 am
BWI
- STL
Nonstop2h 10m
Southwest
Deal found 6/29![Southwest logo]()
$269
This Delta deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/244:59 pm
STL
- DCA
1 stop4h 39m
Delta
Sat 9/266:00 am
DCA
- STL
1 stop4h 34m
Delta
Deal found 7/1![Delta logo]()
$273
This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2810:15 am
STL
- PHL
2 stops7h 25m
Southwest
Tue 8/41:45 pm
PHL
- STL
2 stops7h 15m
Southwest
Deal found 6/30![Southwest logo]()
$283
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/69:15 am
STL
- IAD
1 stop6h 27m
Delta
Mon 8/107:26 pm
IAD
- STL
1 stop5h 32m
Delta
Deal found 6/30![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:40 am
STL
- IAD
Nonstop2h 14m
United Airlines
Wed 8/2610:35 am
IAD
- STL
1 stop6h 03m
United Airlines
Deal found 6/28![United Airlines logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/144:09 pm
STL
- SBY
1 stop27h 23m
Multiple Airlines
Sat 7/188:06 pm
SBY
- STL
2 stops22h 31m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$668
This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/213:15 pm
STL
- BWI
1 stop4h 15m
Southwest
Tue 7/2810:15 am
BWI
- STL
Nonstop2h 15m
Southwest
Deal found 6/30![Southwest logo]()
$288
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/712:52 pm
STL
- DCA
1 stop5h 42m
Delta
Tue 8/115:29 pm
DCA
- STL
1 stop4h 13m
Delta
Deal found 7/2![Delta logo]()
$307
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:40 am
STL
- IAD
Nonstop2h 14m
United Airlines
Sat 8/2210:35 am
IAD
- STL
1 stop5h 56m
United Airlines
Deal found 7/1![United Airlines logo]()
$347
This Southwest deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:45 am
STL
- BWI
Nonstop2h 05m
Southwest
Mon 8/105:45 pm
BWI
- STL
1 stop5h 35m
Southwest
Deal found 6/28![Southwest logo]()
$292
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/204:59 pm
STL
- DCA
1 stop5h 44m
Delta
Wed 9/236:10 am
DCA
- STL
1 stop4h 19m
Delta
Deal found 6/28![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:10 am
STL
- DCA
Nonstop2h 00m
Southwest
Mon 8/178:15 am
DCA
- STL
Nonstop2h 20m
Southwest
Deal found 7/1![Southwest logo]()
$303
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:59 pm
STL
- IAD
1 stop5h 46m
United Airlines
Tue 8/1112:49 pm
IAD
- STL
2 stops24h 13m
United Airlines
Deal found 7/1![United Airlines logo]()
$381
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:00 am
STL
- IAD
1 stop4h 31m
Delta
Wed 9/2312:26 pm
IAD
- STL
1 stop6h 14m
Delta
Deal found 6/28![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:55 pm
STL
- DCA
Nonstop2h 00m
Southwest
Fri 8/76:00 am
DCA
- STL
1 stop5h 40m
Southwest
Deal found 6/28![Southwest logo]()
$316
This Delta deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/244:59 pm
STL
- DCA
1 stop4h 39m
Delta
Sun 9/276:10 am
DCA
- STL
1 stop4h 19m
Delta
Deal found 6/29![Delta logo]()
$333
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:30 pm
STL
- IAD
1 stop6h 14m
United Airlines
Sun 8/305:45 pm
IAD
- STL
Nonstop2h 26m
United Airlines
Deal found 6/28![United Airlines logo]()
$403
This American Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/213:25 pm
STL
- SBY
1 stop4h 52m
American Airlines
Sun 8/236:41 am
SBY
- STL
1 stop5h 11m
American Airlines
Deal found 6/30![American Airlines logo]()
$558
This Southwest deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:50 pm
STL
- DCA
Nonstop2h 00m
Southwest
Wed 7/2911:45 am
DCA
- STL
1 stop4h 05m
Southwest
Deal found 7/2![Southwest logo]()
$326
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:00 am
STL
- DCA
1 stop5h 28m
Delta
Sun 8/308:00 am
DCA
- STL
1 stop4h 46m
Delta
Deal found 6/28![Delta logo]()
$333
This American Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:42 pm
STL
- SBY
1 stop4h 16m
American Airlines
Sun 8/306:05 am
SBY
- STL
1 stop6h 51m
American Airlines
Deal found 6/28![American Airlines logo]()
$558
This United Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1512:55 pm
STL
- IAD
Nonstop2h 12m
United Airlines
Tue 7/218:15 am
IAD
- STL
1 stop4h 56m
United Airlines
Deal found 6/29![United Airlines logo]()
$436
This Southwest deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/228:30 am
STL
- DCA
Nonstop1h 55m
Southwest
Tue 7/288:00 am
DCA
- STL
Nonstop2h 10m
Southwest
Deal found 7/2![Southwest logo]()
$346
This United Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/171:00 pm
STL
- IAD
Nonstop2h 06m
United Airlines
Sat 8/225:45 pm
IAD
- STL
Nonstop2h 26m
United Airlines
Deal found 7/2![United Airlines logo]()
$438
This Delta deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/411:00 am
STL
- BWI
1 stop7h 25m
Delta
Thu 9/1010:21 am
BWI
- STL
1 stop4h 47m
Delta
Deal found 6/29![Delta logo]()
$371
This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:40 pm
STL
- PHL
Nonstop2h 10m
Southwest
Fri 8/286:35 pm
PHL
- STL
Nonstop2h 25m
Southwest
Deal found 6/30![Southwest logo]()
$358
Last-minute flights from St. Louis to MarylandDiscover last-minute flight deals from St. Louis to Maryland. Data last updated July 3, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Maryland. Data last updated July 3, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/204:57 pm
STL
- IAD
1 stop4h 58m
Frontier
Wed 7/229:50 am
IAD
- STL
1 stop9h 15m
Frontier
Deal found 6/28![Frontier logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:34 pm
STL
- BWI
1 stop20h 00m
Frontier
Tue 7/289:37 pm
BWI
- STL
1 stop12h 20m
Frontier
Deal found 6/30![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/224:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Tue 7/288:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 7/2![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/244:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Tue 7/288:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 7/2![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/254:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Tue 7/288:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 7/1![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/254:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Thu 7/309:37 pm
BWI
- STL
1 stop12h 20m
Frontier
Deal found 7/1![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/274:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Tue 7/287:07 pm
BWI
- STL
1 stop14h 50m
Frontier
Deal found 7/2![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Tue 8/48:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 6/28![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Wed 7/299:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 6/28![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/314:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Mon 8/39:32 pm
BWI
- STL
1 stop21h 05m
Frontier
Deal found 7/1![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/34:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Thu 8/139:32 pm
BWI
- STL
1 stop12h 25m
Frontier
Deal found 7/1![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Thu 8/209:32 pm
BWI
- STL
1 stop20h 50m
Frontier
Deal found 7/1![Frontier logo]()
$138
One-way flights from St. Louis to MarylandSearch for one-way flight options from St. Louis to Maryland. Find affordable one-way fares based on user searches. Data last updated July 3, 2026.
Search for one-way flight options from St. Louis to Maryland. Find affordable one-way fares based on user searches. Data last updated July 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:17 pm
STL
- BWI
1 stop12h 09m
Frontier
Deal found 7/1![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/294:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Deal found 7/1![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:34 pm
STL
- BWI
1 stop20h 00m
Frontier
Deal found 7/1![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/254:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Deal found 6/30![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:34 pm
STL
- PHL
1 stop11h 41m
Frontier
Deal found 7/1![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:34 pm
STL
- PHL
1 stop11h 41m
Frontier
Deal found 7/2![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:17 pm
STL
- PHL
1 stop17h 09m
Frontier
Deal found 7/2![Frontier logo]()
$70
This Trip.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2610:35 am
STL
- BWI
1 stop7h 01m
Frontier
Deal found 6/28![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:34 pm
STL
- PHL
1 stop11h 41m
Frontier
Deal found 7/1![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2710:35 am
STL
- PHL
1 stop11h 36m
Frontier
Deal found 7/2![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/274:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Deal found 7/2![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/34:57 pm
STL
- IAD
1 stop22h 43m
Frontier
Deal found 7/1![Frontier logo]()
$76
Find flight deals from St. Louis to Maryland
Keep the following information in mind while searching for St. Louis to Maryland flight deals. Data was last updated July 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $122 (Kiwi.com) |
One-way from | $63 (Kiwi.com) |
Popular in | May |
Cheapest in | August |
Average price | $328 |
Good round-trip deal | $396 or less |
Good one-way deal | $222 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Maryland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2026.
Use the filters below to find and compare flights from St. Louis to Maryland that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisBaltimore
STL - BWI
STLBWI
Lambert-St Louis
Sat 10/3
6:30 am-9:30 am
Nonstop2h 00m
Baltimore/Washington
Sat 10/10
6:15 am-9:25 am
1 stop4h 10m
$269
St. LouisBaltimore
STL - BWI
STLBWI
Lambert-St Louis
Thu 9/24
10:05 am-5:28 pm
1 stop6h 23m
Baltimore/Washington
Mon 9/28
6:35 pm-11:42 pm
1 stop6h 07m
$269
St. LouisBaltimore
STL - BWI
STLBWI
Lambert-St Louis
Sat 8/8
10:45 am-4:35 pm
1 stop4h 50m
Baltimore/Washington
Sat 8/15
9:40 am-10:50 am
Nonstop2h 10m
$269
St. LouisWashington, D.C.
STL - DCA
STLDCA
Lambert-St Louis
Thu 9/24
4:59 pm-10:38 pm
1 stop4h 39m
Washington, D.C. Reagan-National
Sat 9/26
6:00 am-9:34 am
1 stop4h 34m
$273
St. LouisPhiladelphia
STL - PHL
STLPHL
Lambert-St Louis
Tue 7/28
10:15 am-6:40 pm
2 stops7h 25m
Philadelphia
Tue 8/4
1:45 pm-8:00 pm
2 stops7h 15m
$283
St. LouisBaltimore
STL - BWI
STLBWI
Lambert-St Louis
Tue 7/21
3:15 pm-8:30 pm
1 stop4h 15m
Baltimore/Washington
Tue 7/28
10:15 am-11:30 am
Nonstop2h 15m
$288
St. LouisWashington, D.C.
STL - IAD
STLIAD
Lambert-St Louis
Thu 8/6
9:15 am-4:42 pm
1 stop6h 27m
Washington, D.C. Dulles Intl
Mon 8/10
7:26 pm-11:58 pm
1 stop5h 32m
$289
St. LouisBaltimore
STL - BWI
STLBWI
Lambert-St Louis
Sat 8/8
6:45 am-9:50 am
Nonstop2h 05m
Baltimore/Washington
Mon 8/10
5:45 pm-10:20 pm
1 stop5h 35m
$292
St. LouisWashington, D.C.
STL - DCA
STLDCA
Lambert-St Louis
Fri 8/14
8:10 am-11:10 am
Nonstop2h 00m
Washington, D.C. Reagan-National
Mon 8/17
8:15 am-9:35 am
Nonstop2h 20m
$303
St. LouisWashington, D.C.
STL - DCA
STLDCA
Lambert-St Louis
Fri 8/7
12:52 pm-7:34 pm
1 stop5h 42m
Washington, D.C. Reagan-National
Tue 8/11
5:29 pm-8:42 pm
1 stop4h 13m
$307
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Maryland
Have a flexible travel schedule? Discover the best time to fly to Maryland from St. Louis with our price prediction graph.
STL-BWI
STL-PHL
STL-IAD
STL-DCA
STL-SBY
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Maryland
STL-USMD
STL-BWI
STL-PHL
STL-IAD
STL-DCA
What is the cheapest month to book a flight from St. Louis to Maryland?
Currently, December is the cheapest month in which you can book a flight from St. Louis to Maryland (average of $129). Flying from St. Louis to Maryland in January is currently the most expensive (average of $351). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from STL to MD?
Find hourly flight availability from St. Louis to Maryland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 12% on flights from St. Louis to Maryland by exploring options for tickets at noon.
How much does it cost to fly round-trip from St. Louis to Maryland?
How far ahead should I book a flight from St. Louis to Maryland?
The price you pay for your flight from St. Louis to Maryland may vary depending on when you book. For the best chance of a lower fare, look to book 30 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from St. Louis to Maryland?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Maryland. Price data was last updated on June 27, 2026.
Travelers seeking maximum savings on their St. Louis to Maryland flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Maryland
Get insights into the airlines that provide service to Maryland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Maryland. Reviews last updated July 3, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andAmerican Airlines from St. Louis to Maryland by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Overall
7.9
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Overall
7.9
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Overall
7.9
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Overall
7.9
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Maryland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Maryland
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Complete your trip
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St. Louis and Maryland flights
Browse other St. Louis and Maryland flight options. Last updated on July 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Maryland flights
Consider these flights traveling from St. Louis to Maryland.
Top 4 airlines flying from St. Louis to Maryland
Discover the top 4 airlines that operate flights from St. Louis to Maryland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$153 | Average$218 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$196 | Average$297 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$239 | Average$429 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$273 | Average$384 | FlexibilityNo cancel fee | On-time71% |