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

Cheap Flights to St. Mary's County from ₩113,600

View ₩113,600 flight on Wed, Aug 26, 2026Opens in a new window

Popular airlines to St. Mary's County

  • Frontier Airlines

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Alaska Airlines

  • JetBlue Airways

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to St. Mary's County?

Prices were available within the past 7 days and start at ₩113,600 for one-way flights and ₩227,600 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Jul 29 - Wed, Aug 5
LGA
New York
DCA
Washington
₩227,600 Roundtrip, found 1 day ago
₩227,600
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Jul 29 from New York to Washington, returning Wed, Aug 5, priced at ₩227,600 found 1 day ago
Delta
Sat, Jul 18 - Sat, Jul 25
JFK
New York
DCA
Washington
₩239,800 Roundtrip, found 12 hours ago
₩239,800
Roundtrip
found 12 hours ago
Select Delta flight, departing Sat, Jul 18 from New York to Washington, returning Sat, Jul 25, priced at ₩239,800 found 12 hours ago
Delta
Tue, Aug 4 - Wed, Aug 5
EWR
New York
DCA
Washington
₩269,200 Roundtrip, found 4 days ago
₩269,200
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Aug 4 from New York to Washington, returning Wed, Aug 5, priced at ₩269,200 found 4 days ago
United
Tue, Aug 4 - Wed, Aug 5
EWR
New York
DCA
Washington
₩333,600 Roundtrip, found 4 days ago
₩333,600
Roundtrip
found 4 days ago
Select United flight, departing Tue, Aug 4 from New York to Washington, returning Wed, Aug 5, priced at ₩333,600 found 4 days ago
American Airlines
Sat, Jul 18 - Sat, Jul 25
JFK
New York
DCA
Washington
₩334,600 Roundtrip, found 12 hours ago
₩334,600
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Sat, Jul 18 from New York to Washington, returning Sat, Jul 25, priced at ₩334,600 found 12 hours ago
Delta
Tue, Jun 30 - Sat, Jul 4
ATL
Atlanta
DCA
Washington
₩361,000 Roundtrip, found 3 days ago
₩361,000
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Jun 30 from Atlanta to Washington, returning Sat, Jul 4, priced at ₩361,000 found 3 days ago
Delta
Tue, Jun 30 - Tue, Jul 7
SAV
Savannah
DCA
Washington
₩395,100 Roundtrip, found 1 day ago
₩395,100
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Jun 30 from Savannah to Washington, returning Tue, Jul 7, priced at ₩395,100 found 1 day ago
Air Canada
Fri, Jun 26 - Mon, Jun 29
YYZ
Toronto
DCA
Washington
₩422,700 Roundtrip, found 6 days ago
₩422,700
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, Jun 26 from Toronto to Washington, returning Mon, Jun 29, priced at ₩422,700 found 6 days ago
Delta
Thu, Jul 9 - Sun, Jul 12
LAS
Las Vegas
DCA
Washington
₩531,100 Roundtrip, found 1 day ago
₩531,100
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Jul 9 from Las Vegas to Washington, returning Sun, Jul 12, priced at ₩531,100 found 1 day ago
Alaska Airlines
Tue, Jul 21 - Mon, Aug 10
LAX
Los Angeles
DCA
Washington
₩659,700 Roundtrip, found 21 hours ago
₩659,700
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Tue, Jul 21 from Los Angeles to Washington, returning Mon, Aug 10, priced at ₩659,700 found 21 hours ago

Trending flights to St. Mary's County

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

Air Canada
Sat, Sep 12 - Fri, Sep 18
ICN
Seoul
DCA
Washington
₩1,414,100 Roundtrip, found 3 days ago
₩1,414,100
Roundtrip
found 3 days ago
Select Air Canada flight, departing Sat, Sep 12 from Seoul to Washington, returning Fri, Sep 18, priced at ₩1,414,100 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. ₩227,600 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 ₩113,600 in the last seven days. Round-trip flights to St. Marys County ranged from ₩227,600 to ₩1,414,100 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 ₩227,600 to ₩1,414,100.
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 70ºF and 80ºF 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
*Available to Expedia members.