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Cheap Flights to Jefferson County | Popular Routes to Jefferson County from HK$3,555

View HK$3,555 flight on Fri, 31 Jul 2026Opens in a new window

Popular airlines to Jefferson County

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  • United

  • Delta

  • American Airlines

  • KLM

  • Aeromexico

  • Air France

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Cheap round-trip flights to Jefferson County

Prices were available within the past 7 days and start at HK$3,555 for one-way flights and HK$5,153 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, 31 Jul - Mon, 3 Aug
PDX
Portland
IDA
Idaho Falls
HK$5,153 Return, found 5 hours ago
HK$5,153
Return
found 5 hours ago
Select United flight, departing Fri, 31 Jul from Portland to Idaho Falls, returning Mon, 3 Aug, priced at HK$5,153 found 5 hours ago
Delta
Fri, 31 Jul - Mon, 3 Aug
PDX
Portland
IDA
Idaho Falls
HK$5,443 Return, found 5 hours ago
HK$5,443
Return
found 5 hours ago
Select Delta flight, departing Fri, 31 Jul from Portland to Idaho Falls, returning Mon, 3 Aug, priced at HK$5,443 found 5 hours ago
United
Fri, 31 Jul - Mon, 3 Aug
PDX
Portland
IDA
Idaho Falls
HK$5,465 Return, found 5 hours ago
HK$5,465
Return
found 5 hours ago
Select United flight, departing Fri, 31 Jul from Portland to Idaho Falls, returning Mon, 3 Aug, priced at HK$5,465 found 5 hours ago
United
Fri, 31 Jul - Mon, 3 Aug
PDX
Portland
IDA
Idaho Falls
HK$5,852 Return, found 5 hours ago
HK$5,852
Return
found 5 hours ago
Select United flight, departing Fri, 31 Jul from Portland to Idaho Falls, returning Mon, 3 Aug, priced at HK$5,852 found 5 hours ago
United
Fri, 31 Jul - Mon, 3 Aug
PDX
Portland
IDA
Idaho Falls
HK$6,044 Return, found 5 hours ago
HK$6,044
Return
found 5 hours ago
Select United flight, departing Fri, 31 Jul from Portland to Idaho Falls, returning Mon, 3 Aug, priced at HK$6,044 found 5 hours ago
United
Fri, 31 Jul - Mon, 3 Aug
PDX
Portland
IDA
Idaho Falls
HK$6,281 Return, found 5 hours ago
HK$6,281
Return
found 5 hours ago
Select United flight, departing Fri, 31 Jul from Portland to Idaho Falls, returning Mon, 3 Aug, priced at HK$6,281 found 5 hours ago
United
Fri, 31 Jul - Mon, 3 Aug
PDX
Portland
IDA
Idaho Falls
HK$6,454 Return, found 5 hours ago
HK$6,454
Return
found 5 hours ago
Select United flight, departing Fri, 31 Jul from Portland to Idaho Falls, returning Mon, 3 Aug, priced at HK$6,454 found 5 hours ago
United
Fri, 31 Jul - Mon, 3 Aug
PDX
Portland
IDA
Idaho Falls
HK$6,540 Return, found 5 hours ago
HK$6,540
Return
found 5 hours ago
Select United flight, departing Fri, 31 Jul from Portland to Idaho Falls, returning Mon, 3 Aug, priced at HK$6,540 found 5 hours ago
American Airlines
Fri, 31 Jul - Mon, 3 Aug
PDX
Portland
IDA
Idaho Falls
HK$6,691 Return, found 5 hours ago
HK$6,691
Return
found 5 hours ago
Select American Airlines flight, departing Fri, 31 Jul from Portland to Idaho Falls, returning Mon, 3 Aug, priced at HK$6,691 found 5 hours ago
Delta
Fri, 31 Jul - Mon, 3 Aug
PDX
Portland
IDA
Idaho Falls
HK$6,743 Return, found 5 hours ago
HK$6,743
Return
found 5 hours ago
Select Delta flight, departing Fri, 31 Jul from Portland to Idaho Falls, returning Mon, 3 Aug, priced at HK$6,743 found 5 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, HK$5,153 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 Portland (PDX) sold for as little as HK$3,555 in the last seven days. During this period, the price of a round-trip fare to Jefferson County varied between HK$5,153 and HK$8,682. 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.
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 HK$5,153 to HK$8,682.
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.

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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
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