Cheap Flights to Jefferson County from $94

View $94 flight on Tue, May 12, 2026Opens in a new window

Popular airlines to Jefferson County

  • Alaska Airlines

  • United

  • Delta

  • American Airlines

  • Hawaiian Airlines

  • KLM

  • Aeromexico

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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, Apr 1 - Sat, Apr 4
SEA
Seattle
IDA
Idaho Falls
$157 Roundtrip, found 1 hour ago
$157
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Wed, Apr 1 from Seattle to Idaho Falls, returning Sat, Apr 4, priced at $157 found 1 hour ago
United
Thu, Apr 30 - Sun, May 3
DEN
Denver
IDA
Idaho Falls
$199 Roundtrip, found 3 days ago
$199
Roundtrip
found 3 days ago
Select United flight, departing Thu, Apr 30 from Denver to Idaho Falls, returning Sun, May 3, priced at $199 found 3 days ago
Delta
Wed, May 13 - Sat, May 16
PDX
Portland
IDA
Idaho Falls
$203 Roundtrip, found 1 day ago
$203
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, May 13 from Portland to Idaho Falls, returning Sat, May 16, priced at $203 found 1 day ago
American Airlines
Wed, Apr 22 - Wed, Apr 29
CLD
Carlsbad
IDA
Idaho Falls
$231 Roundtrip, found 23 hours ago
$231
Roundtrip
found 23 hours ago
Select American Airlines flight, departing Wed, Apr 22 from Carlsbad to Idaho Falls, returning Wed, Apr 29, priced at $231 found 23 hours ago
Alaska Airlines
Sat, May 23 - Wed, May 27
SAN
San Diego
IDA
Idaho Falls
$231 Roundtrip, found 15 hours ago
$231
Roundtrip
found 15 hours ago
Select Alaska Airlines flight, departing Sat, May 23 from San Diego to Idaho Falls, returning Wed, May 27, priced at $231 found 15 hours ago
Hawaiian Airlines
Sat, Mar 21 - Tue, Mar 24
SMF
Sacramento
IDA
Idaho Falls
$237 Roundtrip, found 6 days ago
$237
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Sat, Mar 21 from Sacramento to Idaho Falls, returning Tue, Mar 24, priced at $237 found 6 days ago
Alaska Airlines
Sat, May 16 - Sat, May 16
LAX
Los Angeles
IDA
Idaho Falls
$237 Roundtrip, found 22 hours ago
$237
Roundtrip
found 22 hours ago
Select Alaska Airlines flight, departing Sat, May 16 from Los Angeles to Idaho Falls, returning Sat, May 16, priced at $237 found 22 hours ago
Delta
Sat, Apr 11 - Sat, Apr 25
ONT
Ontario
IDA
Idaho Falls
$243 Roundtrip, found 2 days ago
$243
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Apr 11 from Ontario to Idaho Falls, returning Sat, Apr 25, priced at $243 found 2 days ago
Hawaiian Airlines
Fri, Mar 20 - Tue, Mar 31
PHX
Phoenix
IDA
Idaho Falls
$243 Roundtrip, found 6 days ago
$243
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Fri, Mar 20 from Phoenix to Idaho Falls, returning Tue, Mar 31, priced at $243 found 6 days ago
Alaska Airlines
Tue, Jun 23 - Tue, Jun 23
SNA
Orange County
IDA
Idaho Falls
$255 Roundtrip, found 6 days ago
$255
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Jun 23 from Orange County to Idaho Falls, returning Tue, Jun 23, priced at $255 found 6 days 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 $432
IDA
Idaho Falls Regional
Cheapest
Flights from $432

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, Apr 1 - Sat, Apr 4
SEA
Seattle
IDA
Idaho Falls
$157 Roundtrip, found 1 hour ago
$157
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Wed, Apr 1 from Seattle to Idaho Falls, returning Sat, Apr 4, priced at $157 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, $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 $255. 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 $255.
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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