A dirt path winding through a grassy hillside with trees and wildflowers.

Cheap Flights to Franklin County from NT$5,767

View NT$5,767 flight on Sun, 2026/9/20Opens in a new window

Popular airlines to Franklin County

  • Alaska Airlines

  • Delta

  • United

  • American Airlines

  • Frontier Airlines

  • Southwest Airlines

  • JetBlue Airways

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 45% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to Franklin County?

Prices were available within the past 7 days and start at NT$5,767 for one-way flights and NT$13,463 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, Sep 20 - Sun, Sep 27
SJC
San Jose
IDA
Idaho Falls
NT$13,463 Roundtrip, found 1 day ago
NT$13,463
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Sep 20 from San Jose to Idaho Falls, returning Sun, Sep 27, priced at NT$13,463 found 1 day ago
Delta
Sat, May 22 - Sat, May 29
SFO
San Francisco
IDA
Idaho Falls
NT$13,591 Roundtrip, found 21 hours ago
NT$13,591
Roundtrip
found 21 hours ago
Select Delta flight, departing Sat, May 22 from San Francisco to Idaho Falls, returning Sat, May 29, priced at NT$13,591 found 21 hours ago
American Airlines
Sat, May 22 - Sat, May 29
SFO
San Francisco
IDA
Idaho Falls
NT$13,850 Roundtrip, found 21 hours ago
NT$13,850
Roundtrip
found 21 hours ago
Select American Airlines flight, departing Sat, May 22 from San Francisco to Idaho Falls, returning Sat, May 29, priced at NT$13,850 found 21 hours ago
Delta
Sat, May 22 - Sat, May 29
SFO
San Francisco
IDA
Idaho Falls
NT$14,621 Roundtrip, found 21 hours ago
NT$14,621
Roundtrip
found 21 hours ago
Select Delta flight, departing Sat, May 22 from San Francisco to Idaho Falls, returning Sat, May 29, priced at NT$14,621 found 21 hours ago
United
Sat, May 22 - Sat, May 29
SFO
San Francisco
IDA
Idaho Falls
NT$15,298 Roundtrip, found 21 hours ago
NT$15,298
Roundtrip
found 21 hours ago
Select United flight, departing Sat, May 22 from San Francisco to Idaho Falls, returning Sat, May 29, priced at NT$15,298 found 21 hours ago
Delta
Sun, Sep 20 - Sun, Sep 27
SJC
San Jose
IDA
Idaho Falls
NT$15,393 Roundtrip, found 1 day ago
NT$15,393
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Sep 20 from San Jose to Idaho Falls, returning Sun, Sep 27, priced at NT$15,393 found 1 day ago
Delta
Sat, May 22 - Sat, May 29
SFO
San Francisco
IDA
Idaho Falls
NT$16,102 Roundtrip, found 21 hours ago
NT$16,102
Roundtrip
found 21 hours ago
Select Delta flight, departing Sat, May 22 from San Francisco to Idaho Falls, returning Sat, May 29, priced at NT$16,102 found 21 hours ago
United
Sun, Sep 20 - Sun, Sep 27
SJC
San Jose
IDA
Idaho Falls
NT$16,616 Roundtrip, found 1 day ago
NT$16,616
Roundtrip
found 1 day ago
Select United flight, departing Sun, Sep 20 from San Jose to Idaho Falls, returning Sun, Sep 27, priced at NT$16,616 found 1 day ago
United
Sun, Sep 20 - Sun, Sep 27
SJC
San Jose
IDA
Idaho Falls
NT$17,034 Roundtrip, found 1 day ago
NT$17,034
Roundtrip
found 1 day ago
Select United flight, departing Sun, Sep 20 from San Jose to Idaho Falls, returning Sun, Sep 27, priced at NT$17,034 found 1 day ago
Delta
Sat, May 22 - Sat, May 29
SFO
San Francisco
IDA
Idaho Falls
NT$17,131 Roundtrip, found 21 hours ago
NT$17,131
Roundtrip
found 21 hours ago
Select Delta flight, departing Sat, May 22 from San Francisco to Idaho Falls, returning Sat, May 29, priced at NT$17,131 found 21 hours ago

Frequently asked questions

How do I find cheap flights to Franklin County that have flexible change policies?
Search for bargain flights to Franklin County, then tick the "No change fee" box below the "Flexible change policies" subheading. It really is that easy. We know that plans can change and flexibility is important, so book with confidence with Expedia.
Which airlines fly to Franklin County?
Dig out your suitcase and take your pick of these well-known airlines that have flights into or near Franklin County:

  • Delta Air Lines - 6,400 flights to or near Franklin County each month, including 6,400 flights to Salt Lake City Intl. Airport (SLC) per month.
  • Southwest Airlines - 676 flights to or near Franklin County each month, including 676 flights to Salt Lake City Intl. Airport (SLC) per month.
  • United Airlines - 563 flights to or near Franklin County each month, including 563 flights to Salt Lake City Intl. Airport (SLC) per month.

How can I find cheap tickets to Franklin County?
A great strategy for scoring cheap fares is to be flexible with your dates. Begin with searching for your flight to Franklin County, then click on the "flexible dates" link for a list of prices for nearby days. Another handy tip? Book well ahead. For an idea of fares, NT$13,463 was the best price for a flight to Franklin County in the last seven days.
How much is a flight to Franklin County?
There were plenty of low-cost fares for the taking in the last seven days, with the price of a return ticket to Franklin County varying between NT$13,463 and NT$17,131. Many lucky travelers locked in one-way tickets from San Jose (SJC) for just NT$5,767.
What are the most popular airports to fly into in Franklin County?
Jet into Salt Lake City Intl. Airport (SLC) and experience everything that Franklin County has to offer. As the region's primary entry point, around 8,676 flights land here each month.
When is the cheapest time to fly to Franklin County?
Jet off on a Tuesday to improve your chances of picking up the cheapest flight to Franklin County. Mondays are usually the second most affordable day to take off. Saturday is generally the priciest day to fly anywhere.
How much is a plane ticket to Franklin County?
In the last seven days, plane tickets to Franklin County fluctuated from NT$13,463 to NT$17,131.
What is the best time to go to Franklin County?
June, July and August are popular months to explore the wonders of Preston, one of Franklin County's most fascinating cities. Summer here starts June 20. Average temperatures range from 50ºF to 80ºF across the season, so visit around then if you enjoy warmer weather.
What months are the cheapest to book a flight to Franklin County?
February is the ideal month to snap up an awesome deal to Franklin County. Be aware that the costliest time to purchase tickets in the U.S. Isn't during the height of summer, but in December.
*Available to Expedia members.