A stone bridge over a canal with lily pads, brick buildings, and a clear blue sky.

Cheap flights to Frederick County

View €327 flight on Wed, 21 Oct 2026Opens in a new window

Popular airlines to Frederick County

  • Frontier Airlines

  • Delta

  • American Airlines

  • United

  • Southwest Airlines

  • Alaska Airlines

  • JetBlue Airways

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Cheap round-trip flights to Frederick County

Prices were available within the past 7 days and start at €327 for one-way flights and €484 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Mon, 23 Nov - Mon, 30 Nov
DUB
Dublin
IAD
Washington
€484 Return, found 1 day ago
€484
Return
found 1 day ago
Select Icelandair flight, departing Mon, 23 Nov from Dublin to Washington, returning Mon, 30 Nov, priced at €484 found 1 day ago
Lufthansa
Sat, 21 Nov - Sun, 29 Nov
DUB
Dublin
IAD
Washington
€492 Return, found 3 days ago
€492
Return
found 3 days ago
Select Lufthansa flight, departing Sat, 21 Nov from Dublin to Washington, returning Sun, 29 Nov, priced at €492 found 3 days ago
British Airways
Wed, 2 Dec - Mon, 7 Dec
DUB
Dublin
BWI
Baltimore
€495 Return, found 1 day ago
€495
Return
found 1 day ago
Select British Airways flight, departing Wed, 2 Dec from Dublin to Baltimore, returning Mon, 7 Dec, priced at €495 found 1 day ago
Swiss International Air Lines
Wed, 11 Nov - Tue, 24 Nov
DUB
Dublin
IAD
Washington
€499 Return, found 2 days ago
€499
Return
found 2 days ago
Select Swiss International Air Lines flight, departing Wed, 11 Nov from Dublin to Washington, returning Tue, 24 Nov, priced at €499 found 2 days ago
KLM
Fri, 20 Nov - Wed, 2 Dec
DUB
Dublin
IAD
Washington
€500 Return, found 4 days ago
€500
Return
found 4 days ago
Select KLM flight, departing Fri, 20 Nov from Dublin to Washington, returning Wed, 2 Dec, priced at €500 found 4 days ago
American Airlines
Sun, 31 Jan - Sun, 7 Feb
OTP
Bucharest
IAD
Washington
€503 Return, found 1 day ago
€503
Return
found 1 day ago
Select American Airlines flight, departing Sun, 31 Jan from Bucharest to Washington, returning Sun, 7 Feb, priced at €503 found 1 day ago
British Airways
Wed, 10 Feb - Wed, 17 Feb
OTP
Bucharest
BWI
Baltimore
€505 Return, found 1 day ago
€505
Return
found 1 day ago
Select British Airways flight, departing Wed, 10 Feb from Bucharest to Baltimore, returning Wed, 17 Feb, priced at €505 found 1 day ago
Aer Lingus
Mon, 23 Nov - Mon, 30 Nov
DUB
Dublin
IAD
Washington
€507 Return, found 1 day ago
€507
Return
found 1 day ago
Select Aer Lingus flight, departing Mon, 23 Nov from Dublin to Washington, returning Mon, 30 Nov, priced at €507 found 1 day ago
United
Mon, 21 Sept - Mon, 28 Sept
OTP
Bucharest
IAD
Washington
€508 Return, found 1 day ago
€508
Return
found 1 day ago
Select United flight, departing Mon, 21 Sept from Bucharest to Washington, returning Mon, 28 Sept, priced at €508 found 1 day ago
Air France
Wed, 4 Nov - Wed, 11 Nov
DUB
Dublin
BWI
Baltimore
€508 Return, found 5 days ago
€508
Return
found 5 days ago
Select Air France flight, departing Wed, 4 Nov from Dublin to Baltimore, returning Wed, 11 Nov, priced at €508 found 5 days 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.

Icelandair
Mon, 23 Nov - Mon, 30 Nov
DUB
Dublin
IAD
Washington
€484 Return, found 1 day ago
€484
Return
found 1 day ago
Select Icelandair flight, departing Mon, 23 Nov from Dublin to Washington, returning Mon, 30 Nov, priced at €484 found 1 day 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 €484.
How much is a flight to Frederick County?
One-way flights departing from Bucharest (OTP) sold for as little as €327 in the last seven days. During this time, the cost of a return air ticket to Frederick County ranged between €484 and €508. 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.

How much is a plane ticket to Frederick County?
In the last seven days, tickets to Frederick County fluctuated from €484 to €508.
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.

Book with confidence

About Frederick County

Expedia offers flights to Frederick County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Frederick County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About Frederick County
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