Cheap flights to St. Mary's County

View €59 flight on Tue, 12 May 2026Opens in a new window

Popular airlines to St. Mary's County

  • Frontier Airlines

  • Delta

  • American Airlines

  • United

  • Southwest Airlines

  • Spirit Airlines

  • Alaska Airlines

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Cheap round-trip flights to St. Mary's County

Prices were available within the past 7 days and start at €59 for one-way flights and €117 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Tue, 12 May - Tue, 19 May
BOS
Boston
DCA
Washington
€117 Return, found 6 days ago
€117
Return
found 6 days ago
Select JetBlue Airways flight, departing Tue, 12 May from Boston to Washington, returning Tue, 19 May, priced at €117 found 6 days ago
American Airlines
Wed, 10 Jun - Wed, 17 Jun
BOS
Boston
DCA
Washington
€118 Return, found 6 hours ago
€118
Return
found 6 hours ago
Select American Airlines flight, departing Wed, 10 Jun from Boston to Washington, returning Wed, 17 Jun, priced at €118 found 6 hours ago
Delta
Wed, 10 Jun - Wed, 17 Jun
BOS
Boston
DCA
Washington
€118 Return, found 6 hours ago
€118
Return
found 6 hours ago
Select Delta flight, departing Wed, 10 Jun from Boston to Washington, returning Wed, 17 Jun, priced at €118 found 6 hours ago
American Airlines
Thu, 11 Jun - Sun, 14 Jun
LGA
New York
DCA
Washington
€152 Return, found 8 hours ago
€152
Return
found 8 hours ago
Select American Airlines flight, departing Thu, 11 Jun from New York to Washington, returning Sun, 14 Jun, priced at €152 found 8 hours ago
Delta
Thu, 11 Jun - Mon, 15 Jun
JFK
New York
DCA
Washington
€152 Return, found 22 hours ago
€152
Return
found 22 hours ago
Select Delta flight, departing Thu, 11 Jun from New York to Washington, returning Mon, 15 Jun, priced at €152 found 22 hours ago
American Airlines
Sat, 23 May - Sat, 30 May
LAX
Los Angeles
DCA
Washington
€185 Return, found 6 days ago
€185
Return
found 6 days ago
Select American Airlines flight, departing Sat, 23 May from Los Angeles to Washington, returning Sat, 30 May, priced at €185 found 6 days ago
Delta
Wed, 20 May - Wed, 27 May
DAL
Dallas
DCA
Washington
€188 Return, found 2 days ago
€188
Return
found 2 days ago
Select Delta flight, departing Wed, 20 May from Dallas to Washington, returning Wed, 27 May, priced at €188 found 2 days ago
Delta
Thu, 11 Jun - Sun, 14 Jun
EWR
New York
DCA
Washington
€190 Return, found 8 hours ago
€190
Return
found 8 hours ago
Select Delta flight, departing Thu, 11 Jun from New York to Washington, returning Sun, 14 Jun, priced at €190 found 8 hours ago
United
Sat, 19 Sept - Thu, 24 Sept
EWR
New York
DCA
Washington
€212 Return, found 6 days ago
€212
Return
found 6 days ago
Select United flight, departing Sat, 19 Sept from New York to Washington, returning Thu, 24 Sept, priced at €212 found 6 days ago
British Airways
Tue, 24 Nov - Tue, 1 Dec
DUB
Dublin
DCA
Washington
€501 Return, found 1 day ago
€501
Return
found 1 day ago
Select British Airways flight, departing Tue, 24 Nov from Dublin to Washington, returning Tue, 1 Dec, priced at €501 found 1 day ago

Trending flights to St. Mary's County

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Thu, 17 Sept - Mon, 21 Sept
DUB
Dublin
DCA
Washington
€456 Return, found 6 days ago
€456
Return
found 6 days ago
Select JetBlue Airways flight, departing Thu, 17 Sept from Dublin to Washington, returning Mon, 21 Sept, priced at €456 found 6 days ago

Frequently asked questions

How do I find cheap flights to St. Marys County that have flexible change policies?
It's as easy as can be with Expedia. Firstly, type in your travel details and click the "Search" button. Step 2? Check the "No change fee" box below the "Flexible change policies" filter on the top left of your screen. Step 3. Reserve your cheap and flexible airfare to St. Marys County.
Which airlines fly to St. Marys County?
A variety of airlines fly to destinations in or near St. Marys County. Your next big adventure is a few clicks away with these popular carriers:

  • American Airlines - 7,501 flights to or near St. Marys County each month, including 7,284 flights to Ronald Reagan Washington National Airport (DCA) and 216 flights to Washington Dulles Intl. Airport (IAD) per month.
  • United Airlines - 5,939 flights to or near St. Marys County each month, including 5,146 flights to Washington Dulles Intl. Airport (IAD) and 793 flights to Ronald Reagan Washington National Airport (DCA) per month.
  • Delta Air Lines - 2,036 flights to or near St. Marys County each month, including 1,516 flights to Ronald Reagan Washington National Airport (DCA) and 520 flights to Washington Dulles Intl. Airport (IAD) per month.

How can I find cheap tickets to St. Marys County?
You'll always score an epic deal with Expedia, but our "flexible dates" feature makes it even easier. Enter your preferred flight date, then click on the flexible dates link above to see the cheapest prices for nearby days. €117 was the lowest price for a flight to St. Marys County in the last seven days.
How much is a flight to St. Marys County?
If you were flying one way from Boston (BOS), you could've picked up a low-cost fare for €59 in the last seven days. Round-trip flights to St. Marys County ranged from €117 to €501 during this same period.
What are the most popular airports to fly into in St. Marys County?
Pack your suitcase and touch down at one of these leading St. Marys County airports:

  • Ronald Reagan Washington National Airport (DCA) - 11,555 flights per month.
  • Washington Dulles Intl. Airport (IAD) - 6,533 flights per month.

How much is a plane ticket to St. Marys County?
In the last seven days, fares to St. Marys County fluctuated from €117 to €501.
What is the best time to go to St. Marys County?
A nice time to visit St. Marys County, along with the exciting city of California, is over the lively months of May, July and September. Summer here begins June 20, and you can expect temperatures of between 21ºC and 27ºC if you visit then. This warmer weather is perfect for wandering around this city's attractions.
What months are the cheapest to book a flight to St. Marys County?
To grab an awesome deal to St. Marys County, try to book sometime in February when airfares are at their lowest. When's the most expensive time? In the United States, it's the month of December.

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About St. Mary's County

Expedia offers flights to St. Mary's County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to St. Mary's County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About St. Mary's County

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