Cheap flights to Jefferson County

View €103 flight on Sat, 14 Mar 2026Opens in a new window

Popular airlines to Jefferson County

  • Alaska Airlines

  • United

  • Delta

  • American Airlines

  • Hawaiian Airlines

  • KLM

  • Air France

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Cheap round-trip flights to Jefferson County

Prices were available within the past 7 days and start at €103 for one-way flights and €205 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 14 Mar - Sat, 21 Mar
LAX
Los Angeles
IDA
Idaho Falls
€205 Return, found 10 hours ago
€205
Return
found 10 hours ago
Select Delta flight, departing Sat, 14 Mar from Los Angeles to Idaho Falls, returning Sat, 21 Mar, priced at €205 found 10 hours ago
Delta
Sat, 14 Mar - Sat, 21 Mar
LAX
Los Angeles
IDA
Idaho Falls
€271 Return, found 10 hours ago
€271
Return
found 10 hours ago
Select Delta flight, departing Sat, 14 Mar from Los Angeles to Idaho Falls, returning Sat, 21 Mar, priced at €271 found 10 hours ago
Delta
Sat, 14 Mar - Sat, 21 Mar
LAX
Los Angeles
IDA
Idaho Falls
€321 Return, found 10 hours ago
€321
Return
found 10 hours ago
Select Delta flight, departing Sat, 14 Mar from Los Angeles to Idaho Falls, returning Sat, 21 Mar, priced at €321 found 10 hours ago
American Airlines
Sat, 14 Mar - Sat, 21 Mar
LAX
Los Angeles
IDA
Idaho Falls
€331 Return, found 10 hours ago
€331
Return
found 10 hours ago
Select American Airlines flight, departing Sat, 14 Mar from Los Angeles to Idaho Falls, returning Sat, 21 Mar, priced at €331 found 10 hours ago
Delta
Sat, 14 Mar - Sat, 21 Mar
LAX
Los Angeles
IDA
Idaho Falls
€336 Return, found 10 hours ago
€336
Return
found 10 hours ago
Select Delta flight, departing Sat, 14 Mar from Los Angeles to Idaho Falls, returning Sat, 21 Mar, priced at €336 found 10 hours ago
Delta
Sat, 14 Mar - Sat, 21 Mar
LAX
Los Angeles
IDA
Idaho Falls
€339 Return, found 10 hours ago
€339
Return
found 10 hours ago
Select Delta flight, departing Sat, 14 Mar from Los Angeles to Idaho Falls, returning Sat, 21 Mar, priced at €339 found 10 hours ago
Delta
Sat, 14 Mar - Sat, 21 Mar
LAX
Los Angeles
IDA
Idaho Falls
€356 Return, found 10 hours ago
€356
Return
found 10 hours ago
Select Delta flight, departing Sat, 14 Mar from Los Angeles to Idaho Falls, returning Sat, 21 Mar, priced at €356 found 10 hours ago
United
Sat, 14 Mar - Sat, 21 Mar
LAX
Los Angeles
IDA
Idaho Falls
€390 Return, found 10 hours ago
€390
Return
found 10 hours ago
Select United flight, departing Sat, 14 Mar from Los Angeles to Idaho Falls, returning Sat, 21 Mar, priced at €390 found 10 hours ago
KLM
Wed, 4 Mar - Sun, 8 Mar
BUD
Budapest
IDA
Idaho Falls
€935 Return, found 15 hours ago
€935
Return
found 15 hours ago
Select KLM flight, departing Wed, 4 Mar from Budapest to Idaho Falls, returning Sun, 8 Mar, priced at €935 found 15 hours ago
Air France
Wed, 4 Mar - Sun, 8 Mar
BUD
Budapest
IDA
Idaho Falls
€1,242 Return, found 15 hours ago
€1,242
Return
found 15 hours ago
Select Air France flight, departing Wed, 4 Mar from Budapest to Idaho Falls, returning Sun, 8 Mar, priced at €1,242 found 15 hours 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?
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, €205 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 Los Angeles (LAX) sold for as little as €103 in the last seven days. During this period, the price of a round-trip fare to Jefferson County varied between €205 and €1,242. 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 €205 to €1,242.
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.

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.

Delta
Wed, 4 Mar - Sun, 8 Mar
DUB
Dublin
IDA
Idaho Falls
€841 Return, found 6 hours ago
€841
Return
found 6 hours ago
Select Delta flight, departing Wed, 4 Mar from Dublin to Idaho Falls, returning Sun, 8 Mar, priced at €841 found 6 hours ago
*Available to Expedia members.