Cheap Flights to Frederick County | Popular Routes to Frederick County from HK$1,390

View HK$1,390 flight on Tue, 6 Jan 2026Opens in a new window

Popular airlines to Frederick County

  • Delta

    Delta

  • American Airlines

    American Airlines

  • Frontier Airlines

    Frontier Airlines

  • Spirit Airlines

    Spirit Airlines

  • Southwest Airlines

    Southwest Airlines

  • United

    United

  • British Airways

    British Airways

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Cheap round-trip flights to Frederick County

Prices were available within the past 7 days and start at HK$1,390 for one-way flights and HK$1,951 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 10 Jan - Sat, 17 Jan
STL
St. Louis
IAD
Washington
HK$1,951 Return, found 14 hours ago
HK$1,951
Return
found 14 hours ago
Select Delta flight, departing Sat, 10 Jan from St. Louis to Washington, returning Sat, 17 Jan, priced at HK$1,951 found 14 hours ago
Delta
Tue, 6 Jan - Sat, 10 Jan
STL
St. Louis
BWI
Baltimore
HK$2,714 Return, found 14 hours ago
HK$2,714
Return
found 14 hours ago
Select Delta flight, departing Tue, 6 Jan from St. Louis to Baltimore, returning Sat, 10 Jan, priced at HK$2,714 found 14 hours ago
United
Wed, 7 Jan - Thu, 8 Jan
STL
St. Louis
BWI
Baltimore
HK$3,144 Return, found 14 hours ago
HK$3,144
Return
found 14 hours ago
Select United flight, departing Wed, 7 Jan from St. Louis to Baltimore, returning Thu, 8 Jan, priced at HK$3,144 found 14 hours ago
American Airlines
Wed, 7 Jan - Thu, 8 Jan
STL
St. Louis
BWI
Baltimore
HK$3,144 Return, found 14 hours ago
HK$3,144
Return
found 14 hours ago
Select American Airlines flight, departing Wed, 7 Jan from St. Louis to Baltimore, returning Thu, 8 Jan, priced at HK$3,144 found 14 hours ago
United
Wed, 7 Jan - Thu, 8 Jan
STL
St. Louis
IAD
Washington
HK$3,573 Return, found 14 hours ago
HK$3,573
Return
found 14 hours ago
Select United flight, departing Wed, 7 Jan from St. Louis to Washington, returning Thu, 8 Jan, priced at HK$3,573 found 14 hours ago
China Airlines
Tue, 22 Sept - Tue, 29 Sept
HKG
Hong Kong SAR
IAD
Washington
HK$6,637 Return, found 2 days ago
HK$6,637
Return
found 2 days ago
Select China Airlines flight, departing Tue, 22 Sept from Hong Kong SAR to Washington, returning Tue, 29 Sept, priced at HK$6,637 found 2 days ago
China Airlines
Tue, 10 Mar - Sat, 14 Mar
HKG
Hong Kong SAR
BWI
Baltimore
HK$6,637 Return, found 6 days ago
HK$6,637
Return
found 6 days ago
Select China Airlines flight, departing Tue, 10 Mar from Hong Kong SAR to Baltimore, returning Sat, 14 Mar, priced at HK$6,637 found 6 days ago
Ethiopian Airlines
Tue, 27 Jan - Tue, 10 Feb
AMM
Amman
IAD
Washington
HK$6,645 Return, found 9 hours ago
HK$6,645
Return
found 9 hours ago
Select Ethiopian Airlines flight, departing Tue, 27 Jan from Amman to Washington, returning Tue, 10 Feb, priced at HK$6,645 found 9 hours ago
Etihad Airways
Thu, 29 Jan - Tue, 17 Feb
AMM
Amman
IAD
Washington
HK$6,653 Return, found 9 hours ago
HK$6,653
Return
found 9 hours ago
Select Etihad Airways flight, departing Thu, 29 Jan from Amman to Washington, returning Tue, 17 Feb, priced at HK$6,653 found 9 hours ago
Korean Air
Sun, 1 Feb - Sun, 8 Feb
HKG
Hong Kong SAR
IAD
Washington
HK$7,313 Return, found 1 hour ago
HK$7,313
Return
found 1 hour ago
Select Korean Air flight, departing Sun, 1 Feb from Hong Kong SAR to Washington, returning Sun, 8 Feb, priced at HK$7,313 found 1 hour ago

Trending flights to Frederick 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.

China Airlines
Tue, 22 Sept - Tue, 29 Sept
HKG
Hong Kong SAR
IAD
Washington
HK$6,637 Return, found 2 days ago
HK$6,637
Return
found 2 days ago
Select China Airlines flight, departing Tue, 22 Sept from Hong Kong SAR to Washington, returning Tue, 29 Sept, priced at HK$6,637 found 2 days ago

Frequently asked questions

How do I find cheap flights to Frederick County that have flexible change policies?
At Expedia, we've been channeling our inner contortionist to bring you the most flexible airfares around. Simply check the "No change fee" box directly beneath the filter heading "Flexible change policies" to find your dream flight to Frederick County.
Which airlines fly to Frederick County?
A good selection of airlines fly to destinations in or close to Frederick County. Your trip is just clicks away with these popular carriers:

  • American Airlines - 7,501 flights to or near Frederick 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 Frederick 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 Frederick 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 Frederick County?
Book ahead of time, fly with budget airlines, use miles or points — there are loads of ways! One more is to make the most of Expedia's "flexible dates" feature. Search for your Frederick County flight, then compare the cheapest prices for nearby dates. In the last seven days, the lowest price for a flight to Frederick County was HK$1,951.
How much is a flight to Frederick County?
One-way flights departing from St. Louis (STL) sold for as little as HK$1,390 in the last seven days. During this time, the cost of a return air ticket to Frederick County ranged between HK$1,951 and HK$7,313. If you find a fantastic deal, book immediately — these prices don't stick around for long.
What are the most popular airports to fly into in Frederick County?
Choosing your airport comes down to factors including your budget and carrier. Here are your two options in Frederick County:

  • 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 Frederick County?
Jetting off on a Tuesday, followed by a Monday, is generally the best way to land the cheapest fare. Stay away from the weekends if possible, because Saturday is typically the most expensive day. Spend the money you saved having an awesome time in Frederick County instead!
How much is a plane ticket to Frederick County?
In the last seven days, tickets to Frederick County fluctuated from HK$1,951 to HK$7,313.
What is the best time to go to Frederick County?
Green Valley, Frederick County's top city, is a terrific destination to explore at anytime. Don't like chilly weather? Then head here from June 20 onward in summer, when average temperatures range from 18ºC to 29ºC. March, May and June is when Green Valley is at its busiest.
What months are the cheapest to book a flight to Frederick County?
February is a great month to land a bargain fare to Frederick County. Bear in mind that the costliest time to make a booking in the USA isn't during the peak of summer, but the festive month of December.

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About Frederick County

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About Frederick County

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