Cheap flights to St. Mary's County

View €33 flight on Wed, 21 Jan 2026Opens in a new window

Popular airlines to St. Mary's County

  • American Airlines

    American Airlines

  • Delta

    Delta

  • Frontier Airlines

    Frontier Airlines

  • Spirit Airlines

    Spirit Airlines

  • Southwest Airlines

    Southwest Airlines

  • United

    United

  • Alaska 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 €33 for one-way flights and €65 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Wed, 21 Jan - Wed, 28 Jan
LGA
New York
DCA
Washington
€65 Return, found 3 days ago
€65
Return
found 3 days ago
Select JetBlue Airways flight, departing Wed, 21 Jan from New York to Washington, returning Wed, 28 Jan, priced at €65 found 3 days ago
American Airlines
Wed, 21 Jan - Wed, 28 Jan
LGA
New York
DCA
Washington
€112 Return, found 3 days ago
€112
Return
found 3 days ago
Select American Airlines flight, departing Wed, 21 Jan from New York to Washington, returning Wed, 28 Jan, priced at €112 found 3 days ago
JetBlue Airways
Wed, 21 Jan - Wed, 28 Jan
JFK
New York
DCA
Washington
€112 Return, found 3 days ago
€112
Return
found 3 days ago
Select JetBlue Airways flight, departing Wed, 21 Jan from New York to Washington, returning Wed, 28 Jan, priced at €112 found 3 days ago
Delta
Thu, 8 Jan - Sun, 11 Jan
JFK
New York
DCA
Washington
€112 Return, found 1 hour ago
€112
Return
found 1 hour ago
Select Delta flight, departing Thu, 8 Jan from New York to Washington, returning Sun, 11 Jan, priced at €112 found 1 hour ago
JetBlue Airways
Sat, 24 Jan - Sat, 31 Jan
RDU
Raleigh
DCA
Washington
€135 Return, found 1 day ago
€135
Return
found 1 day ago
Select JetBlue Airways flight, departing Sat, 24 Jan from Raleigh to Washington, returning Sat, 31 Jan, priced at €135 found 1 day ago
Delta
Sat, 24 Jan - Sat, 31 Jan
BOS
Boston
DCA
Washington
€135 Return, found 1 day ago
€135
Return
found 1 day ago
Select Delta flight, departing Sat, 24 Jan from Boston to Washington, returning Sat, 31 Jan, priced at €135 found 1 day ago
JetBlue Airways
Thu, 8 Jan - Mon, 12 Jan
PIT
Pittsburgh
DCA
Washington
€140 Return, found 3 days ago
€140
Return
found 3 days ago
Select JetBlue Airways flight, departing Thu, 8 Jan from Pittsburgh to Washington, returning Mon, 12 Jan, priced at €140 found 3 days ago
United
Wed, 25 Feb - Thu, 26 Feb
EWR
New York
DCA
Washington
€159 Return, found 3 days ago
€159
Return
found 3 days ago
Select United flight, departing Wed, 25 Feb from New York to Washington, returning Thu, 26 Feb, priced at €159 found 3 days ago
United
Thu, 8 Jan - Sun, 11 Jan
EWR
New York
DCA
Washington
€163 Return, found 1 hour ago
€163
Return
found 1 hour ago
Select United flight, departing Thu, 8 Jan from New York to Washington, returning Sun, 11 Jan, priced at €163 found 1 hour ago
Air Canada
Sun, 25 Jan - Sun, 1 Feb
YYZ
Toronto
DCA
Washington
€196 Return, found 11 hours ago
€196
Return
found 11 hours ago
Select Air Canada flight, departing Sun, 25 Jan from Toronto to Washington, returning Sun, 1 Feb, priced at €196 found 11 hours ago

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.

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. €65 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 New York (LGA), you could've picked up a low-cost fare for €33 in the last seven days. Round-trip flights to St. Marys County ranged from €65 to €423 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 €65 to €423.
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.

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.

American Airlines
Sat, 21 Feb - Sat, 14 Mar
DUB
Dublin
DCA
Washington
€423 Return, found 6 days ago
€423
Return
found 6 days ago
Select American Airlines flight, departing Sat, 21 Feb from Dublin to Washington, returning Sat, 14 Mar, priced at €423 found 6 days ago
*Available to Expedia members.