Cheap flights to Jefferson County

View €178 flight on Tue, 2 Jun 2026Opens in a new window

Flight 1

Flight 2

Popular airlines to Jefferson County

  • Alaska Airlines

  • United

  • Delta

  • American Airlines

  • KLM

  • Air France

  • Virgin Atlantic

  • 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 €178 for one-way flights and €278 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 28 May - Thu, 4 Jun
ORD
Chicago
IDA
Idaho Falls
€278 Return, found 13 hours ago
€278
Return
found 13 hours ago
Select American Airlines flight, departing Thu, 28 May from Chicago to Idaho Falls, returning Thu, 4 Jun, priced at €278 found 13 hours ago
American Airlines
Thu, 28 May - Thu, 4 Jun
ORD
Chicago
IDA
Idaho Falls
€295 Return, found 13 hours ago
€295
Return
found 13 hours ago
Select American Airlines flight, departing Thu, 28 May from Chicago to Idaho Falls, returning Thu, 4 Jun, priced at €295 found 13 hours ago
American Airlines
Thu, 28 May - Thu, 4 Jun
ORD
Chicago
IDA
Idaho Falls
€303 Return, found 13 hours ago
€303
Return
found 13 hours ago
Select American Airlines flight, departing Thu, 28 May from Chicago to Idaho Falls, returning Thu, 4 Jun, priced at €303 found 13 hours ago
American Airlines
Thu, 28 May - Thu, 4 Jun
ORD
Chicago
IDA
Idaho Falls
€329 Return, found 13 hours ago
€329
Return
found 13 hours ago
Select American Airlines flight, departing Thu, 28 May from Chicago to Idaho Falls, returning Thu, 4 Jun, priced at €329 found 13 hours ago
Delta
Thu, 23 Apr - Mon, 27 Apr
JFK
New York
IDA
Idaho Falls
€398 Return, found 7 hours ago
€398
Return
found 7 hours ago
Select Delta flight, departing Thu, 23 Apr from New York to Idaho Falls, returning Mon, 27 Apr, priced at €398 found 7 hours ago
United
Thu, 23 Apr - Mon, 27 Apr
EWR
New York
IDA
Idaho Falls
€408 Return, found 7 hours ago
€408
Return
found 7 hours ago
Select United flight, departing Thu, 23 Apr from New York to Idaho Falls, returning Mon, 27 Apr, priced at €408 found 7 hours ago
Delta
Thu, 28 May - Thu, 4 Jun
ORD
Chicago
IDA
Idaho Falls
€409 Return, found 13 hours ago
€409
Return
found 13 hours ago
Select Delta flight, departing Thu, 28 May from Chicago to Idaho Falls, returning Thu, 4 Jun, priced at €409 found 13 hours ago
American Airlines
Thu, 23 Apr - Mon, 27 Apr
JFK
New York
IDA
Idaho Falls
€413 Return, found 7 hours ago
€413
Return
found 7 hours ago
Select American Airlines flight, departing Thu, 23 Apr from New York to Idaho Falls, returning Mon, 27 Apr, priced at €413 found 7 hours ago
United
Thu, 28 May - Thu, 4 Jun
ORD
Chicago
IDA
Idaho Falls
€414 Return, found 13 hours ago
€414
Return
found 13 hours ago
Select United flight, departing Thu, 28 May from Chicago to Idaho Falls, returning Thu, 4 Jun, priced at €414 found 13 hours ago
Delta
Thu, 23 Apr - Mon, 27 Apr
EWR
New York
IDA
Idaho Falls
€442 Return, found 7 hours ago
€442
Return
found 7 hours ago
Select Delta flight, departing Thu, 23 Apr from New York to Idaho Falls, returning Mon, 27 Apr, priced at €442 found 7 hours ago

Frequently asked questions

How do I find cheap flights to Jefferson County that have flexible change policies?
When it comes to flying these days, flexibility is a must. That's why we've added a "No change fee" filter to help you track down flexible, low-priced flights to Jefferson County. It's to the left of your screen directly under the "Flexible change policies" subheading.
Which airlines fly to Jefferson County?
Find a seat with one of these airlines and the lively region of Jefferson County will be yours to explore:

  • United Airlines - 91 flights to or near Jefferson County each month, including 91 flights to Idaho Falls Regional Airport (IDA) per month.
  • Delta Air Lines - 86 flights to or near Jefferson County each month, including 86 flights to Idaho Falls Regional Airport (IDA) per month.
  • Allegiant Air - 65 flights to or near Jefferson County each month, including 65 flights to Idaho Falls Regional Airport (IDA) per month.

How can I find cheap tickets to Jefferson County?
In the last seven days, €278 was the lowest price for a flight to Jefferson County. For an even cheaper fare, book ahead of time and be flexible with your travel dates. Search for your trip to Jefferson County, then check out prices for nearby days by clicking on our "flexible dates" link.
How much is a flight to Jefferson County?
One-way flights departing from Chicago (ORD) sold for as little as €178 in the last seven days. During this period, the price of a round-trip fare to Jefferson County varied between €278 and €442. If you find a fantastic deal, book as fast as you can — these fares don't stick around for long.
What are the most popular airports to fly into in Jefferson County?
Idaho Falls Regional Airport (IDA) is the primary gateway for people travelling into and out of Jefferson County. Roughly 334 flights per month touch down at this airport.
How much is a plane ticket to Jefferson County?
In the last seven days, plane fares to Jefferson County ranged from €278 to €442.
What is the best time to go to Jefferson County?
Rigby, Jefferson County's leading city, is a great place to tour around at anytime. Don't like the cold? Then journey here from June 20 onward in summer, when temperatures range from 10ºC to 27ºC. June, July and August is when Rigby draws the biggest crowds.
What months are the cheapest to book a flight to Jefferson County?
The ideal month to book a fantastic deal to Jefferson County is February, whereas prices are at a premium in December. Keep clear of this month if you're counting your pennies.

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.