Cheap Flights to St. Mary's County from ₩130,000

View ₩130,000 flight on Mon, May 11, 2026Opens in a new window

Popular airlines to St. Mary's County

  • Delta

  • American Airlines

  • Frontier Airlines

  • United

  • Southwest Airlines

  • Alaska Airlines

  • Spirit Airlines

  • 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 ₩130,000 for one-way flights and ₩232,700 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, May 26 - Mon, Jun 1
BOS
Boston
DCA
Washington
₩232,700 Roundtrip, found 18 hours ago
₩232,700
Roundtrip
found 18 hours ago
Select Delta flight, departing Tue, May 26 from Boston to Washington, returning Mon, Jun 1, priced at ₩232,700 found 18 hours ago
Delta
Tue, May 26 - Mon, Jun 1
BOS
Boston
DCA
Washington
₩243,000 Roundtrip, found 18 hours ago
₩243,000
Roundtrip
found 18 hours ago
Select Delta flight, departing Tue, May 26 from Boston to Washington, returning Mon, Jun 1, priced at ₩243,000 found 18 hours ago
Delta
Sun, May 10 - Mon, May 11
BOS
Boston
DCA
Washington
₩262,200 Roundtrip, found 15 hours ago
₩262,200
Roundtrip
found 15 hours ago
Select Delta flight, departing Sun, May 10 from Boston to Washington, returning Mon, May 11, priced at ₩262,200 found 15 hours ago
Delta
Tue, May 26 - Mon, Jun 1
BOS
Boston
DCA
Washington
₩275,600 Roundtrip, found 18 hours ago
₩275,600
Roundtrip
found 18 hours ago
Select Delta flight, departing Tue, May 26 from Boston to Washington, returning Mon, Jun 1, priced at ₩275,600 found 18 hours ago
Delta
Tue, May 26 - Mon, Jun 1
BOS
Boston
DCA
Washington
₩290,200 Roundtrip, found 18 hours ago
₩290,200
Roundtrip
found 18 hours ago
Select Delta flight, departing Tue, May 26 from Boston to Washington, returning Mon, Jun 1, priced at ₩290,200 found 18 hours ago
Delta
Sat, May 23 - Mon, May 25
BOS
Boston
DCA
Washington
₩304,400 Roundtrip, found 6 days ago
₩304,400
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, May 23 from Boston to Washington, returning Mon, May 25, priced at ₩304,400 found 6 days ago
United
Tue, May 26 - Mon, Jun 1
BOS
Boston
DCA
Washington
₩365,600 Roundtrip, found 18 hours ago
₩365,600
Roundtrip
found 18 hours ago
Select United flight, departing Tue, May 26 from Boston to Washington, returning Mon, Jun 1, priced at ₩365,600 found 18 hours ago
American Airlines
Sun, May 10 - Mon, May 11
BOS
Boston
DCA
Washington
₩366,000 Roundtrip, found 15 hours ago
₩366,000
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Sun, May 10 from Boston to Washington, returning Mon, May 11, priced at ₩366,000 found 15 hours ago
Air Canada
Mon, Oct 19 - Fri, Oct 23
YVR
Vancouver
DCA
Washington
₩637,100 Roundtrip, found 16 hours ago
₩637,100
Roundtrip
found 16 hours ago
Select Air Canada flight, departing Mon, Oct 19 from Vancouver to Washington, returning Fri, Oct 23, priced at ₩637,100 found 16 hours ago
WestJet
Mon, Oct 19 - Fri, Oct 23
YVR
Vancouver
DCA
Washington
₩1,272,500 Roundtrip, found 16 hours ago
₩1,272,500
Roundtrip
found 16 hours ago
Select WestJet flight, departing Mon, Oct 19 from Vancouver to Washington, returning Fri, Oct 23, priced at ₩1,272,500 found 16 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.

United
Wed, Feb 10 - Sat, Feb 13
ICN
Seoul
DCA
Washington
₩1,694,600 Roundtrip, found 3 days ago
₩1,694,600
Roundtrip
found 3 days ago
Select United flight, departing Wed, Feb 10 from Seoul to Washington, returning Sat, Feb 13, priced at ₩1,694,600 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. ₩232,700 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 ₩130,000 in the last seven days. Round-trip flights to St. Marys County ranged from ₩232,700 to ₩1,694,600 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 ₩232,700 to ₩1,694,600.
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.

Explore a world of travel with Expedia

*Available to Expedia members.