Cheap flights to Jefferson County

View €312 flight on Wed, 22 Apr 2026Opens in a new window

Popular airlines to Jefferson County

  • Frontier Airlines

  • American Airlines

  • Alaska Airlines

  • United

  • Delta

  • Southwest Airlines

  • JetBlue Airways

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Cheap round-trip flights to Jefferson County

Prices were available within the past 7 days and start at €312 for one-way flights and €407 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Mon, 8 Jun - Sun, 14 Jun
DUB
Dublin
DEN
Denver
€407 Return, found 2 days ago
€407
Return
found 2 days ago
Select Icelandair flight, departing Mon, 8 Jun from Dublin to Denver, returning Sun, 14 Jun, priced at €407 found 2 days ago
American Airlines
Tue, 17 Mar - Thu, 30 Apr
DUB
Dublin
DEN
Denver
€427 Return, found 6 days ago
€427
Return
found 6 days ago
Select American Airlines flight, departing Tue, 17 Mar from Dublin to Denver, returning Thu, 30 Apr, priced at €427 found 6 days ago
British Airways
Mon, 13 Apr - Mon, 27 Apr
DUB
Dublin
DEN
Denver
€440 Return, found 5 days ago
€440
Return
found 5 days ago
Select British Airways flight, departing Mon, 13 Apr from Dublin to Denver, returning Mon, 27 Apr, priced at €440 found 5 days ago
Aer Lingus
Sat, 2 May - Sat, 9 May
DUB
Dublin
DEN
Denver
€466 Return, found 3 hours ago
€466
Return
found 3 hours ago
Select Aer Lingus flight, departing Sat, 2 May from Dublin to Denver, returning Sat, 9 May, priced at €466 found 3 hours ago
Iberia
Wed, 3 Jun - Sat, 20 Jun
DUB
Dublin
DEN
Denver
€470 Return, found 6 hours ago
€470
Return
found 6 hours ago
Select Iberia flight, departing Wed, 3 Jun from Dublin to Denver, returning Sat, 20 Jun, priced at €470 found 6 hours ago
Aer Lingus
Fri, 1 May - Sat, 16 May
LIS
Lisbon
DEN
Denver
€532 Return, found 2 days ago
€532
Return
found 2 days ago
Select Aer Lingus flight, departing Fri, 1 May from Lisbon to Denver, returning Sat, 16 May, priced at €532 found 2 days ago
Aer Lingus
Mon, 16 Mar - Mon, 30 Mar
SNN
Shannon
DEN
Denver
€565 Return, found 6 days ago
€565
Return
found 6 days ago
Select Aer Lingus flight, departing Mon, 16 Mar from Shannon to Denver, returning Mon, 30 Mar, priced at €565 found 6 days ago
Finnair
Wed, 3 Jun - Sat, 20 Jun
DUB
Dublin
DEN
Denver
€623 Return, found 6 hours ago
€623
Return
found 6 hours ago
Select Finnair flight, departing Wed, 3 Jun from Dublin to Denver, returning Sat, 20 Jun, priced at €623 found 6 hours ago
Turkish Airlines
Tue, 15 Sept - Tue, 22 Sept
DUB
Dublin
DEN
Denver
€659 Return, found 1 day ago
€659
Return
found 1 day ago
Select Turkish Airlines flight, departing Tue, 15 Sept from Dublin to Denver, returning Tue, 22 Sept, priced at €659 found 1 day ago
Icelandair
Mon, 20 Apr - Mon, 4 May
LHR
London
DEN
Denver
€684 Return, found 20 hours ago
€684
Return
found 20 hours ago
Select Icelandair flight, departing Mon, 20 Apr from London to Denver, returning Mon, 4 May, priced at €684 found 20 hours ago

Trending flights to Jefferson 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, 8 Jun - Sun, 14 Jun
DUB
Dublin
DEN
Denver
€407 Return, found 2 days ago
€407
Return
found 2 days ago
Select Icelandair flight, departing Mon, 8 Jun from Dublin to Denver, returning Sun, 14 Jun, priced at €407 found 2 days ago

Frequently asked questions

How do I find cheap flights to Jefferson County that have flexible change policies?
We know that travel arrangements can change from one minute to the next, so booking a flexible ticket with Expedia is always a smart move. Simply tick the "No change fee" box under the "Flexible change policies" filter. Your well-priced and flexible flight to Jefferson County is just a few clicks away.
Which airlines fly to Jefferson County?
Dig out your passport, pack your bags and choose from these leading airlines that operate flights in or near Jefferson County:

  • United Airlines - 13,033 flights to or near Jefferson County each month, including 13,033 flights to Denver Intl. Airport (DEN) per month.
  • Southwest Airlines - 6,339 flights to or near Jefferson County each month, including 6,339 flights to Denver Intl. Airport (DEN) per month.
  • Frontier Airlines - 1,967 flights to or near Jefferson County each month, including 1,967 flights to Denver Intl. Airport (DEN) per month.

How can I find cheap tickets to Jefferson County?
You'll always walk away with an awesome deal with Expedia, but our "flexible dates" feature makes it even easier. Enter your preferred flight date, then check the flexible dates box above to compare prices for nearby days. €407 was the best price for a flight to Jefferson County in the last seven days.
How much is a flight to Jefferson County?
There were lots of cheap fares up for grabs in the last seven days, with the price of a return flight to Jefferson County varying between €407 and €684. Many lucky holiday makers purchased one-way seats from Dublin (DUB) for as low as €312.
What are the most popular airports to fly into in Jefferson County?
Denver Intl. Airport (DEN) is the primary gateway for many hoping to explore Jefferson County. Approximately 24,249 monthly flights touch down here.
How much is a plane ticket to Jefferson County?
In the last seven days, airfares to Jefferson County ranged between €407 and €684. The early bird catches the worm, so grab a terrific deal today.
What is the best time to go to Jefferson County?
If you'd love to experience Jefferson County's most populous city when it's buzzing, head for Pine sometime in March, May and July. Similar to most destinations in the Northern Hemisphere, summertime here begins June 20, with average temperatures ranging between 10ºC and 21ºC.
What months are the cheapest to book a flight to Jefferson County?
Reserve your ticket in February to enjoy low-priced flights to Jefferson County. The month of December is generally the most expensive time to purchase a fare.

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About Jefferson County

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About Jefferson County

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