Cheap flights to Jefferson County

View €92 flight on Tue, 19 May 2026Opens in a new window

Popular airlines to Jefferson County

  • Frontier Airlines

  • Alaska Airlines

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • JetBlue Airways

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 15% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Jefferson County

Prices were available within the past 7 days and start at €92 for one-way flights and €197 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 21 May - Wed, 27 May
ATL
Atlanta
DEN
Denver
€197 Return, found 1 hour ago
€197
Return
found 1 hour ago
Select Delta flight, departing Thu, 21 May from Atlanta to Denver, returning Wed, 27 May, priced at €197 found 1 hour ago
American Airlines
Sat, 23 May - Sat, 30 May
ATL
Atlanta
DEN
Denver
€225 Return, found 2 days ago
€225
Return
found 2 days ago
Select American Airlines flight, departing Sat, 23 May from Atlanta to Denver, returning Sat, 30 May, priced at €225 found 2 days ago
Delta
Mon, 10 Aug - Wed, 12 Aug
LGA
New York
DEN
Denver
€242 Return, found 6 hours ago
€242
Return
found 6 hours ago
Select Delta flight, departing Mon, 10 Aug from New York to Denver, returning Wed, 12 Aug, priced at €242 found 6 hours ago
Delta
Thu, 14 May - Tue, 19 May
BWI
Baltimore
DEN
Denver
€253 Return, found 5 days ago
€253
Return
found 5 days ago
Select Delta flight, departing Thu, 14 May from Baltimore to Denver, returning Tue, 19 May, priced at €253 found 5 days ago
United
Sat, 23 May - Sat, 30 May
ATL
Atlanta
DEN
Denver
€303 Return, found 2 days ago
€303
Return
found 2 days ago
Select United flight, departing Sat, 23 May from Atlanta to Denver, returning Sat, 30 May, priced at €303 found 2 days ago
American Airlines
Mon, 10 Aug - Wed, 12 Aug
EWR
New York
DEN
Denver
€312 Return, found 6 hours ago
€312
Return
found 6 hours ago
Select American Airlines flight, departing Mon, 10 Aug from New York to Denver, returning Wed, 12 Aug, priced at €312 found 6 hours ago
Finnair
Mon, 22 Jun - Mon, 29 Jun
DUB
Dublin
DEN
Denver
€451 Return, found 6 hours ago
€451
Return
found 6 hours ago
Select Finnair flight, departing Mon, 22 Jun from Dublin to Denver, returning Mon, 29 Jun, priced at €451 found 6 hours ago
Finnair
Mon, 22 Jun - Mon, 29 Jun
DUB
Dublin
DEN
Denver
€458 Return, found 6 hours ago
€458
Return
found 6 hours ago
Select Finnair flight, departing Mon, 22 Jun from Dublin to Denver, returning Mon, 29 Jun, priced at €458 found 6 hours ago
JetBlue Airways
Sat, 9 May - Sat, 16 May
ATL
Atlanta
DEN
Denver
€460 Return, found 4 days ago
€460
Return
found 4 days ago
Select JetBlue Airways flight, departing Sat, 9 May from Atlanta to Denver, returning Sat, 16 May, priced at €460 found 4 days ago
Aer Lingus
Wed, 3 Jun - Fri, 12 Jun
DUB
Dublin
DEN
Denver
€465 Return, found 6 hours ago
€465
Return
found 6 hours ago
Select Aer Lingus flight, departing Wed, 3 Jun from Dublin to Denver, returning Fri, 12 Jun, priced at €465 found 6 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.

Finnair
Mon, 22 Jun - Mon, 29 Jun
DUB
Dublin
DEN
Denver
€451 Return, found 6 hours ago
€451
Return
found 6 hours ago
Select Finnair flight, departing Mon, 22 Jun from Dublin to Denver, returning Mon, 29 Jun, priced at €451 found 6 hours 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. €197 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 €197 and €603. Many lucky holiday makers purchased one-way seats from New York (LGA) for as low as €92.
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 €197 and €603. 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.

Book with confidence

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.
About Jefferson County

Explore a world of travel with Expedia

*Available to Expedia members.