Cheap Flights to Jefferson County from $94

View $94 flight on Sat, Mar 14, 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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How much is the cheapest flight to Jefferson County?

Prices were available within the past 7 days and start at $94 for one-way flights and $157 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Mar 18 - Wed, Mar 25
SEA
Seattle
IDA
Idaho Falls
$157 Roundtrip, found 11 hours ago
$157
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Wed, Mar 18 from Seattle to Idaho Falls, returning Wed, Mar 25, priced at $157 found 11 hours ago
Alaska Airlines
Sat, Mar 14 - Mon, Mar 16
SEA
Seattle
IDA
Idaho Falls
$167 Roundtrip, just found
$167
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Mar 14 from Seattle to Idaho Falls, returning Mon, Mar 16, priced at $167 just found
Alaska Airlines
Thu, Mar 12 - Mon, Mar 16
SEA
Seattle
IDA
Idaho Falls
$177 Roundtrip, found 5 hours ago
$177
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Thu, Mar 12 from Seattle to Idaho Falls, returning Mon, Mar 16, priced at $177 found 5 hours ago
Delta
Sat, Apr 25 - Wed, Apr 29
SEA
Seattle
IDA
Idaho Falls
$187 Roundtrip, found 4 hours ago
$187
Roundtrip
found 4 hours ago
Select Delta flight, departing Sat, Apr 25 from Seattle to Idaho Falls, returning Wed, Apr 29, priced at $187 found 4 hours ago
Alaska Airlines
Sat, May 16 - Tue, May 19
PDX
Portland
IDA
Idaho Falls
$187 Roundtrip, found 23 hours ago
$187
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Sat, May 16 from Portland to Idaho Falls, returning Tue, May 19, priced at $187 found 23 hours ago
Alaska Airlines
Wed, Apr 1 - Sat, Apr 4
SEA
Seattle
IDA
Idaho Falls
$192 Roundtrip, found 13 hours ago
$192
Roundtrip
found 13 hours ago
Select Alaska Airlines flight, departing Wed, Apr 1 from Seattle to Idaho Falls, returning Sat, Apr 4, priced at $192 found 13 hours ago
Alaska Airlines
Sat, Mar 21 - Wed, Mar 25
SEA
Seattle
IDA
Idaho Falls
$195 Roundtrip, found 4 days ago
$195
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, Mar 21 from Seattle to Idaho Falls, returning Wed, Mar 25, priced at $195 found 4 days ago
Hawaiian Airlines
Wed, Mar 18 - Sat, Mar 21
SEA
Seattle
IDA
Idaho Falls
$197 Roundtrip, just found
$197
Roundtrip
just found
Select Hawaiian Airlines flight, departing Wed, Mar 18 from Seattle to Idaho Falls, returning Sat, Mar 21, priced at $197 just found
American Airlines
Wed, Mar 4 - Tue, Mar 10
SFO
San Francisco
IDA
Idaho Falls
$251 Roundtrip, found 6 days ago
$251
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Mar 4 from San Francisco to Idaho Falls, returning Tue, Mar 10, priced at $251 found 6 days ago
United
Tue, Mar 24 - Fri, Mar 27
SNA
Orange County
IDA
Idaho Falls
$261 Roundtrip, found 1 day ago
$261
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 24 from Orange County to Idaho Falls, returning Fri, Mar 27, priced at $261 found 1 day ago

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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 $389
IDA
Idaho Falls Regional
Cheapest
Flights from $389

Enjoy extra legroom, flight flexibility, and a seamless travel experience.

*Flight schedules are subject to change.

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, $157 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 Seattle (SEA) sold for as little as $94 in the last seven days. During this period, the price of a round-trip fare to Jefferson County varied between $157 and $261. 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 $157 to $261.
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.

*Flight schedules are subject to change.

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.

Alaska Airlines
Wed, Mar 18 - Wed, Mar 25
SEA
Seattle
IDA
Idaho Falls
$157 Roundtrip, found 11 hours ago
$157
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Wed, Mar 18 from Seattle to Idaho Falls, returning Wed, Mar 25, priced at $157 found 11 hours ago
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