Cheap Flights to Jefferson County from $116

View $116 flight on Tue, Jul 28, 2026Opens in a new window

Popular airlines to Jefferson County

  • Alaska Airlines

  • United

  • Delta

  • American Airlines

  • Aeromexico

  • KLM

  • Air France

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How much is the cheapest flight to Jefferson County?

Prices were available within the past 7 days and start at $116 for one-way flights and $231 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Aug 15 - Wed, Aug 19
LAX
Los Angeles
IDA
Idaho Falls
$231 Roundtrip, found 1 hour ago
$231
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Aug 15 from Los Angeles to Idaho Falls, returning Wed, Aug 19, priced at $231 found 1 hour ago
Bargain Flight
Sat, Oct 24 - Sat, Oct 31
PDX
Portland
IDA
Idaho Falls
$235 Roundtrip, found 14 hours ago
$235
Roundtrip
found 14 hours ago
Select Bargain Flight flight, departing Sat, Oct 24 from Portland to Idaho Falls, returning Sat, Oct 31, priced at $235 found 14 hours ago
United
Fri, Oct 9 - Tue, Oct 13
DEN
Denver
IDA
Idaho Falls
$249 Roundtrip, found 2 hours ago
$249
Roundtrip
found 2 hours ago
Select United flight, departing Fri, Oct 9 from Denver to Idaho Falls, returning Tue, Oct 13, priced at $249 found 2 hours ago
United
Tue, Sep 1 - Wed, Sep 2
SAN
San Diego
IDA
Idaho Falls
$251 Roundtrip, found 6 days ago
$251
Roundtrip
found 6 days ago
Select United flight, departing Tue, Sep 1 from San Diego to Idaho Falls, returning Wed, Sep 2, priced at $251 found 6 days ago
American Airlines
Wed, Sep 30 - Wed, Oct 7
ORD
Chicago
IDA
Idaho Falls
$271 Roundtrip, found 5 hours ago
$271
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Wed, Sep 30 from Chicago to Idaho Falls, returning Wed, Oct 7, priced at $271 found 5 hours ago
Alaska Airlines
Sat, Oct 17 - Sat, Oct 24
SEA
Seattle
IDA
Idaho Falls
$277 Roundtrip, found 1 hour ago
$277
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Oct 17 from Seattle to Idaho Falls, returning Sat, Oct 24, priced at $277 found 1 hour ago
Bargain Flight
Thu, Dec 3 - Tue, Dec 8
JFK
New York
IDA
Idaho Falls
$293 Roundtrip, found 1 day ago
$293
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Thu, Dec 3 from New York to Idaho Falls, returning Tue, Dec 8, priced at $293 found 1 day ago
United
Sat, Oct 17 - Tue, Oct 20
LAS
Las Vegas
IDA
Idaho Falls
$305 Roundtrip, found 4 days ago
$305
Roundtrip
found 4 days ago
Select United flight, departing Sat, Oct 17 from Las Vegas to Idaho Falls, returning Tue, Oct 20, priced at $305 found 4 days ago
United
Thu, Oct 1 - Mon, Oct 5
PHX
Phoenix
IDA
Idaho Falls
$309 Roundtrip, found 10 hours ago
$309
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Oct 1 from Phoenix to Idaho Falls, returning Mon, Oct 5, priced at $309 found 10 hours ago
Delta
Tue, Jul 28 - Fri, Aug 7
SNA
Orange County
IDA
Idaho Falls
$310 Roundtrip, found 6 hours ago
$310
Roundtrip
found 6 hours ago
Select Delta flight, departing Tue, Jul 28 from Orange County to Idaho Falls, returning Fri, Aug 7, priced at $310 found 6 hours ago

Airports in Jefferson County

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Idaho Falls Regional IDA. Cheapest option available. Flights from $446
IDA
Idaho Falls Regional
Cheapest
Flights from $446

Trending flights to Jefferson County

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Aug 15 - Wed, Aug 19
LAX
Los Angeles
IDA
Idaho Falls
$231 Roundtrip, found 1 hour ago
$231
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Aug 15 from Los Angeles to Idaho Falls, returning Wed, Aug 19, priced at $231 found 1 hour 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, $231 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 $116 in the last seven days. During this period, the price of a round-trip fare to Jefferson County varied between $231 and $310. 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 traveling into and out of Jefferson County. Roughly 334 flights per month touch down at this airport.
When is the cheapest time to fly to Jefferson County?
Take off to Jefferson County early on in the week and you'll usually be rewarded with cheaper fares. Tuesday is known for being the cheapest day to hop on a plane, closely followed by Monday. If you're hoping to avoid the costliest flights, stay away from Saturdays.
How much is a plane ticket to Jefferson County?
In the last seven days, plane fares to Jefferson County ranged from $231 to $310.
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.
How long is a flight to Jefferson County?
It could be an hour or two or longer — it really depends on which part of the States you're setting off from. The average flight times for these leading domestic routes to Jefferson County will give you a good idea of what to expect:

  • Denver, CO (DEN-Denver Intl.) to Idaho Falls Regional Airport (IDA) - 1 hour and 41 minutes
  • Dallas, TX (DFW-Dallas-Fort Worth Intl.) to Idaho Falls Regional Airport (IDA) - 3 hours and 1 minute
  • Salt Lake City, UT (SLC-Salt Lake City Intl.) to Idaho Falls Regional Airport (IDA) - 1 hour and 6 minutes

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 50ºF to 80ºF. June, July and August is when Rigby draws the biggest crowds.

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Travel information

*Flight schedules are subject to change.

*Available to One Key members.

 

*Flight schedules are subject to change.

*Available to One Key members.