A white building with a red roof and a lighthouse tower, surrounded by tall grass and under a cloudy sky.

Flight to St. Mary's County

View S$129 flight on Fri, 28 Aug, 2026Opens in a new window

Popular airlines to St. Mary's County

  • Frontier Airlines

  • Delta

  • American Airlines

  • United

  • Southwest Airlines

  • Alaska Airlines

  • JetBlue Airways

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

Prices were available within the past 7 days and start at S$129 for one-way flights and S$192 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 29 Aug - Sat, 5 Sept
BOS
Boston
DCA
Washington
S$192 Return, found 2 days ago
S$192
Return
found 2 days ago
Select Delta flight, departing Sat, 29 Aug from Boston to Washington, returning Sat, 5 Sept, priced at S$192 found 2 days ago
American Airlines
Thu, 13 Aug - Mon, 17 Aug
BOS
Boston
DCA
Washington
S$256 Return, found 1 day ago
S$256
Return
found 1 day ago
Select American Airlines flight, departing Thu, 13 Aug from Boston to Washington, returning Mon, 17 Aug, priced at S$256 found 1 day ago
Delta
Thu, 27 Aug - Thu, 3 Sept
RDU
Raleigh
DCA
Washington
S$257 Return, found 3 days ago
S$257
Return
found 3 days ago
Select Delta flight, departing Thu, 27 Aug from Raleigh to Washington, returning Thu, 3 Sept, priced at S$257 found 3 days ago
Delta
Sat, 29 Aug - Sat, 5 Sept
JFK
New York
DCA
Washington
S$258 Return, found 2 days ago
S$258
Return
found 2 days ago
Select Delta flight, departing Sat, 29 Aug from New York to Washington, returning Sat, 5 Sept, priced at S$258 found 2 days ago
Delta
Fri, 28 Aug - Fri, 4 Sept
LGA
New York
DCA
Washington
S$258 Return, found 2 days ago
S$258
Return
found 2 days ago
Select Delta flight, departing Fri, 28 Aug from New York to Washington, returning Fri, 4 Sept, priced at S$258 found 2 days ago
Delta
Wed, 26 Aug - Wed, 2 Sept
EWR
New York
DCA
Washington
S$317 Return, found 4 days ago
S$317
Return
found 4 days ago
Select Delta flight, departing Wed, 26 Aug from New York to Washington, returning Wed, 2 Sept, priced at S$317 found 4 days ago
United
Wed, 26 Aug - Wed, 2 Sept
EWR
New York
DCA
Washington
S$349 Return, found 4 days ago
S$349
Return
found 4 days ago
Select United flight, departing Wed, 26 Aug from New York to Washington, returning Wed, 2 Sept, priced at S$349 found 4 days ago
Delta
Wed, 26 Aug - Wed, 2 Sept
SEA
Seattle
DCA
Washington
S$395 Return, found 4 days ago
S$395
Return
found 4 days ago
Select Delta flight, departing Wed, 26 Aug from Seattle to Washington, returning Wed, 2 Sept, priced at S$395 found 4 days ago
JetBlue Airways
Sun, 2 Aug - Tue, 4 Aug
RDU
Raleigh
DCA
Washington
S$645 Return, found 21 hours ago
S$645
Return
found 21 hours ago
Select JetBlue Airways flight, departing Sun, 2 Aug from Raleigh to Washington, returning Tue, 4 Aug, priced at S$645 found 21 hours ago
Air Canada
Sun, 30 Aug - Sun, 6 Sept
YVR
Vancouver
DCA
Washington
S$700 Return, found 1 day ago
S$700
Return
found 1 day ago
Select Air Canada flight, departing Sun, 30 Aug from Vancouver to Washington, returning Sun, 6 Sept, priced at S$700 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.

Japan Airlines
Tue, 27 Oct - Sun, 8 Nov
SIN
Singapore
DCA
Washington
S$1,505 Return, found 1 day ago
S$1,505
Return
found 1 day ago
Select Japan Airlines flight, departing Tue, 27 Oct from Singapore to Washington, returning Sun, 8 Nov, priced at S$1,505 found 1 day 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. S$192 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 S$129 in the last seven days. Round-trip flights to St. Marys County ranged from S$192 to S$1,505 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.

When is the cheapest time to fly to St. Marys County?
Departing on a Tuesday, followed by a Monday, is generally the best way to get the cheapest deal. Stay away from the weekends if you can, because Saturday is typically the most expensive day. Spend the dollars you saved living it up in St. Marys County instead!
How much is a plane ticket to St. Marys County?
In the last seven days, fares to St. Marys County fluctuated from S$192 to S$1,505.
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

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.

Travel information

St. Mary's County Flights Information

Airlines serving
Delta, American Airlines, United, JetBlue Airways, Air Canada
Roundtrip price
from S$192
St. Mary's County Flights Information
*Available to Expedia members.