Cheap flights to Jefferson County

View €77 flight on Sat, 7 Feb 2026Opens in a new window

Popular airlines to Jefferson County

  • Frontier Airlines

  • Alaska Airlines

  • American 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 €77 for one-way flights and €148 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 7 Feb - Sat, 14 Feb
EWR
New York
DEN
Denver
€148 Return, found 1 day ago
€148
Return
found 1 day ago
Select American Airlines flight, departing Sat, 7 Feb from New York to Denver, returning Sat, 14 Feb, priced at €148 found 1 day ago
Delta
Sat, 7 Feb - Fri, 13 Feb
EWR
New York
DEN
Denver
€161 Return, found 4 days ago
€161
Return
found 4 days ago
Select Delta flight, departing Sat, 7 Feb from New York to Denver, returning Fri, 13 Feb, priced at €161 found 4 days ago
United
Sat, 7 Feb - Sat, 14 Feb
EWR
New York
DEN
Denver
€209 Return, found 1 day ago
€209
Return
found 1 day ago
Select United flight, departing Sat, 7 Feb from New York to Denver, returning Sat, 14 Feb, priced at €209 found 1 day ago
British Airways
Wed, 4 Mar - Sun, 8 Mar
DUB
Dublin
DEN
Denver
€378 Return, just found
€378
Return
just found
Select British Airways flight, departing Wed, 4 Mar from Dublin to Denver, returning Sun, 8 Mar, priced at €378 just found
Iberia
Thu, 28 May - Sun, 31 May
DUB
Dublin
DEN
Denver
€406 Return, found 1 hour ago
€406
Return
found 1 hour ago
Select Iberia flight, departing Thu, 28 May from Dublin to Denver, returning Sun, 31 May, priced at €406 found 1 hour ago
Aer Lingus
Fri, 29 May - Mon, 1 Jun
DUB
Dublin
DEN
Denver
€413 Return, found 1 hour ago
€413
Return
found 1 hour ago
Select Aer Lingus flight, departing Fri, 29 May from Dublin to Denver, returning Mon, 1 Jun, priced at €413 found 1 hour ago
Aer Lingus
Tue, 1 Sept - Tue, 8 Sept
ORK
Cork
DEN
Denver
€496 Return, found 4 days ago
€496
Return
found 4 days ago
Select Aer Lingus flight, departing Tue, 1 Sept from Cork to Denver, returning Tue, 8 Sept, priced at €496 found 4 days ago
Finnair
Thu, 28 May - Sun, 31 May
DUB
Dublin
DEN
Denver
€501 Return, found 1 hour ago
€501
Return
found 1 hour ago
Select Finnair flight, departing Thu, 28 May from Dublin to Denver, returning Sun, 31 May, priced at €501 found 1 hour ago
Lufthansa
Wed, 4 Feb - Tue, 10 Feb
DUB
Dublin
DEN
Denver
€559 Return, found 3 days ago
€559
Return
found 3 days ago
Select Lufthansa flight, departing Wed, 4 Feb from Dublin to Denver, returning Tue, 10 Feb, priced at €559 found 3 days ago
JetBlue Airways
Mon, 4 May - Sun, 17 May
DUB
Dublin
DEN
Denver
€561 Return, found 3 days ago
€561
Return
found 3 days ago
Select JetBlue Airways flight, departing Mon, 4 May from Dublin to Denver, returning Sun, 17 May, priced at €561 found 3 days ago

About Jefferson County

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

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. €148 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 €148 and €561. Many lucky holiday makers purchased one-way seats from New York (EWR) for as low as €77.
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 €148 and €561. 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.

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.

British Airways
Wed, 4 Mar - Sun, 8 Mar
DUB
Dublin
DEN
Denver
€378 Return, just found
€378
Return
just found
Select British Airways flight, departing Wed, 4 Mar from Dublin to Denver, returning Sun, 8 Mar, priced at €378 just found
*Available to Expedia members.