St. Mary's County Flights - Book Cheap Flights to St. Mary's County

View RM312 flight on Thu, 16 Apr 2026Opens in a new window

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

Prices were available within the past 7 days and start at RM312 for one-way flights and RM631 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 6 May - Sat, 9 May
JFK
New York
DCA
Washington
RM631 Return, found 15 hours ago
RM631
Return
found 15 hours ago
Select Delta flight, departing Wed, 6 May from New York to Washington, returning Sat, 9 May, priced at RM631 found 15 hours ago
Delta
Thu, 16 Apr - Sat, 18 Apr
JFK
New York
DCA
Washington
RM683 Return, found 2 days ago
RM683
Return
found 2 days ago
Select Delta flight, departing Thu, 16 Apr from New York to Washington, returning Sat, 18 Apr, priced at RM683 found 2 days ago
American Airlines
Wed, 6 May - Sat, 9 May
JFK
New York
DCA
Washington
RM910 Return, found 15 hours ago
RM910
Return
found 15 hours ago
Select American Airlines flight, departing Wed, 6 May from New York to Washington, returning Sat, 9 May, priced at RM910 found 15 hours ago
Air Canada
Mon, 28 Sept - Tue, 29 Sept
YUL
Montreal
DCA
Washington
RM1,384 Return, found 1 day ago
RM1,384
Return
found 1 day ago
Select Air Canada flight, departing Mon, 28 Sept from Montreal to Washington, returning Tue, 29 Sept, priced at RM1,384 found 1 day ago
United
Thu, 22 Oct - Sun, 25 Oct
YUL
Montreal
DCA
Washington
RM1,565 Return, found 1 day ago
RM1,565
Return
found 1 day ago
Select United flight, departing Thu, 22 Oct from Montreal to Washington, returning Sun, 25 Oct, priced at RM1,565 found 1 day ago
United
Sat, 20 Jun - Tue, 23 Jun
SAN
San Diego
DCA
Washington
RM2,010 Return, found 14 hours ago
RM2,010
Return
found 14 hours ago
Select United flight, departing Sat, 20 Jun from San Diego to Washington, returning Tue, 23 Jun, priced at RM2,010 found 14 hours ago
Air Canada
Mon, 7 Dec - Mon, 14 Dec
LHR
London
DCA
Washington
RM2,426 Return, found 3 hours ago
RM2,426
Return
found 3 hours ago
Select Air Canada flight, departing Mon, 7 Dec from London to Washington, returning Mon, 14 Dec, priced at RM2,426 found 3 hours ago
British Airways
Thu, 23 Apr - Wed, 29 Apr
LHR
London
DCA
Washington
RM2,745 Return, found 5 days ago
RM2,745
Return
found 5 days ago
Select British Airways flight, departing Thu, 23 Apr from London to Washington, returning Wed, 29 Apr, priced at RM2,745 found 5 days ago
KLM
Thu, 23 Apr - Wed, 29 Apr
LHR
London
DCA
Washington
RM2,936 Return, found 5 days ago
RM2,936
Return
found 5 days ago
Select KLM flight, departing Thu, 23 Apr from London to Washington, returning Wed, 29 Apr, priced at RM2,936 found 5 days ago
Iberia
Thu, 23 Apr - Wed, 29 Apr
LHR
London
DCA
Washington
RM2,944 Return, found 5 days ago
RM2,944
Return
found 5 days ago
Select Iberia flight, departing Thu, 23 Apr from London to Washington, returning Wed, 29 Apr, priced at RM2,944 found 5 days 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.

Emirates
Tue, 12 May - Thu, 28 May
KUL
Kuala Lumpur
DCA
Washington
RM5,152 Return, found 3 days ago
RM5,152
Return
found 3 days ago
Select Emirates flight, departing Tue, 12 May from Kuala Lumpur to Washington, returning Thu, 28 May, priced at RM5,152 found 3 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. RM631 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 (JFK), you could've picked up a low-cost fare for RM312 in the last seven days. Round-trip flights to St. Marys County ranged from RM631 to RM5,152 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 RM631 to RM5,152.
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.

Book with confidence

About St. Mary's County

Expedia offers flights to St. Mary's County to meet every traveler'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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