Cheap flights to Frederick County

View €311 flight on Thu, 30 Apr 2026Opens in a new window

Popular airlines to Frederick County

  • American Airlines

  • Delta

  • Frontier Airlines

  • Spirit Airlines

  • United

  • Southwest Airlines

  • Alaska Airlines

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Cheap round-trip flights to Frederick County

Prices were available within the past 7 days and start at €311 for one-way flights and €415 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Thu, 10 Dec - Mon, 14 Dec
DUB
Dublin
IAD
Washington
€415 Return, found 6 days ago
€415
Return
found 6 days ago
Select Icelandair flight, departing Thu, 10 Dec from Dublin to Washington, returning Mon, 14 Dec, priced at €415 found 6 days ago
British Airways
Thu, 10 Dec - Mon, 14 Dec
DUB
Dublin
IAD
Washington
€446 Return, found 6 days ago
€446
Return
found 6 days ago
Select British Airways flight, departing Thu, 10 Dec from Dublin to Washington, returning Mon, 14 Dec, priced at €446 found 6 days ago
British Airways
Sat, 14 Nov - Sun, 15 Nov
DUB
Dublin
BWI
Baltimore
€447 Return, found 2 days ago
€447
Return
found 2 days ago
Select British Airways flight, departing Sat, 14 Nov from Dublin to Baltimore, returning Sun, 15 Nov, priced at €447 found 2 days ago
Scandinavian Airlines
Wed, 8 Apr - Sun, 19 Apr
DUB
Dublin
IAD
Washington
€453 Return, found 7 hours ago
€453
Return
found 7 hours ago
Select Scandinavian Airlines flight, departing Wed, 8 Apr from Dublin to Washington, returning Sun, 19 Apr, priced at €453 found 7 hours ago
Aer Lingus
Sun, 1 Nov - Thu, 10 Dec
DUB
Dublin
IAD
Washington
€458 Return, found 6 days ago
€458
Return
found 6 days ago
Select Aer Lingus flight, departing Sun, 1 Nov from Dublin to Washington, returning Thu, 10 Dec, priced at €458 found 6 days ago
American Airlines
Mon, 20 Apr - Sun, 26 Apr
DUB
Dublin
IAD
Washington
€488 Return, found 3 days ago
€488
Return
found 3 days ago
Select American Airlines flight, departing Mon, 20 Apr from Dublin to Washington, returning Sun, 26 Apr, priced at €488 found 3 days ago
KLM
Tue, 24 Mar - Mon, 13 Apr
DUB
Dublin
IAD
Washington
€517 Return, found 23 hours ago
€517
Return
found 23 hours ago
Select KLM flight, departing Tue, 24 Mar from Dublin to Washington, returning Mon, 13 Apr, priced at €517 found 23 hours ago
Air France
Wed, 15 Apr - Thu, 7 May
DUB
Dublin
IAD
Washington
€546 Return, found 4 hours ago
€546
Return
found 4 hours ago
Select Air France flight, departing Wed, 15 Apr from Dublin to Washington, returning Thu, 7 May, priced at €546 found 4 hours ago
Iberia
Tue, 21 Apr - Sun, 3 May
DUB
Dublin
IAD
Washington
€554 Return, found 7 hours ago
€554
Return
found 7 hours ago
Select Iberia flight, departing Tue, 21 Apr from Dublin to Washington, returning Sun, 3 May, priced at €554 found 7 hours ago
Lufthansa
Thu, 12 Nov - Mon, 16 Nov
DUB
Dublin
IAD
Washington
€570 Return, found 13 hours ago
€570
Return
found 13 hours ago
Select Lufthansa flight, departing Thu, 12 Nov from Dublin to Washington, returning Mon, 16 Nov, priced at €570 found 13 hours 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
Thu, 10 Dec - Mon, 14 Dec
DUB
Dublin
IAD
Washington
€415 Return, found 6 days ago
€415
Return
found 6 days ago
Select Icelandair flight, departing Thu, 10 Dec from Dublin to Washington, returning Mon, 14 Dec, priced at €415 found 6 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 €415.
How much is a flight to Frederick County?
One-way flights departing from Dublin (DUB) sold for as little as €311 in the last seven days. During this time, the cost of a return air ticket to Frederick County ranged between €415 and €570. 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 €415 to €570.
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

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About Frederick County

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