A cave illuminated with colorful lights highlighting stalactites and stalagmites.

Cheap Flights to Franklin County | Popular Routes to Franklin County from HK$856

View HK$856 flight on Thu, 6 Aug 2026Opens in a new window

Flight 1

Flight 2

Popular airlines to Franklin County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Alaska Airlines

  • Frontier Airlines

  • Air Canada

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 35% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Franklin County

Prices were available within the past 7 days and start at HK$856 for one-way flights and HK$1,712 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 6 Aug - Thu, 13 Aug
DFW
Dallas
STL
St. Louis
HK$1,712 Return, found 18 hours ago
HK$1,712
Return
found 18 hours ago
Select Delta flight, departing Thu, 6 Aug from Dallas to St. Louis, returning Thu, 13 Aug, priced at HK$1,712 found 18 hours ago
Delta
Thu, 6 Aug - Thu, 13 Aug
DAL
Dallas
STL
St. Louis
HK$1,712 Return, found 18 hours ago
HK$1,712
Return
found 18 hours ago
Select Delta flight, departing Thu, 6 Aug from Dallas to St. Louis, returning Thu, 13 Aug, priced at HK$1,712 found 18 hours ago
Delta
Thu, 6 Aug - Thu, 13 Aug
DFW
Dallas
STL
St. Louis
HK$1,946 Return, found 18 hours ago
HK$1,946
Return
found 18 hours ago
Select Delta flight, departing Thu, 6 Aug from Dallas to St. Louis, returning Thu, 13 Aug, priced at HK$1,946 found 18 hours ago
Delta
Thu, 6 Aug - Thu, 13 Aug
DFW
Dallas
STL
St. Louis
HK$2,024 Return, found 18 hours ago
HK$2,024
Return
found 18 hours ago
Select Delta flight, departing Thu, 6 Aug from Dallas to St. Louis, returning Thu, 13 Aug, priced at HK$2,024 found 18 hours ago
Delta
Mon, 10 Aug - Tue, 18 Aug
SEA
Seattle
STL
St. Louis
HK$2,110 Return, found 5 days ago
HK$2,110
Return
found 5 days ago
Select Delta flight, departing Mon, 10 Aug from Seattle to St. Louis, returning Tue, 18 Aug, priced at HK$2,110 found 5 days ago
American Airlines
Thu, 6 Aug - Thu, 13 Aug
DFW
Dallas
STL
St. Louis
HK$2,179 Return, found 18 hours ago
HK$2,179
Return
found 18 hours ago
Select American Airlines flight, departing Thu, 6 Aug from Dallas to St. Louis, returning Thu, 13 Aug, priced at HK$2,179 found 18 hours ago
Delta
Thu, 6 Aug - Sat, 8 Aug
SEA
Seattle
STL
St. Louis
HK$2,236 Return, found 6 days ago
HK$2,236
Return
found 6 days ago
Select Delta flight, departing Thu, 6 Aug from Seattle to St. Louis, returning Sat, 8 Aug, priced at HK$2,236 found 6 days ago
United
Thu, 6 Aug - Thu, 13 Aug
DFW
Dallas
STL
St. Louis
HK$2,335 Return, found 18 hours ago
HK$2,335
Return
found 18 hours ago
Select United flight, departing Thu, 6 Aug from Dallas to St. Louis, returning Thu, 13 Aug, priced at HK$2,335 found 18 hours ago
Alaska Airlines
Fri, 14 Aug - Wed, 19 Aug
SEA
Seattle
STL
St. Louis
HK$2,545 Return, found 5 days ago
HK$2,545
Return
found 5 days ago
Select Alaska Airlines flight, departing Fri, 14 Aug from Seattle to St. Louis, returning Wed, 19 Aug, priced at HK$2,545 found 5 days ago
Air Canada
Tue, 29 Dec - Fri, 8 Jan
MXP
Milan
STL
St. Louis
HK$8,478 Return, found 21 hours ago
HK$8,478
Return
found 21 hours ago
Select Air Canada flight, departing Tue, 29 Dec from Milan to St. Louis, returning Fri, 8 Jan, priced at HK$8,478 found 21 hours ago

Trending flights to Franklin County

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

EVA Airways
Tue, 22 Sept - Mon, 23 Nov
HKG
Hong Kong SAR
STL
St. Louis
HK$8,832 Return, found 2 days ago
HK$8,832
Return
found 2 days ago
Select EVA Airways flight, departing Tue, 22 Sept from Hong Kong SAR to St. Louis, returning Mon, 23 Nov, priced at HK$8,832 found 2 days ago

Frequently asked questions

How do I find cheap flights to Franklin County that have flexible change policies?
At Expedia, we've been channeling our inner yoga master to provide you with the most flexible airfares in town. Simply check the "No change fee" box right underneath the "Flexible change policies" heading to find your perfect flight to Franklin County.
Which airlines fly to Franklin County?
With a great range of airlines operating flights into or near Franklin County, the choice is yours:

  • Southwest Airlines - 2,214 flights to or near Franklin County each month, including 2,214 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • American Airlines - 789 flights to or near Franklin County each month, including 789 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • Delta Air Lines - 650 flights to or near Franklin County each month, including 650 flights to Lambert-St. Louis Intl. Airport (STL) per month.

How can I find cheap tickets to Franklin County?
You'll always walk away with an awesome deal with Expedia, but our "flexible dates" feature makes it that much easier. Enter your preferred travel date, then check the flexible dates box above to reveal the cheapest prices for nearby days. HK$1,712 was the cheapest price for a flight to Franklin County in the last seven days.
How much is a flight to Franklin County?
If you were flying one way from Dallas (DFW), you could've nabbed a cheap ticket for just HK$856 in the last seven days. Round-trip journeys to Franklin County ranged from only HK$1,712 to HK$8,832 during this same period.
What are the most popular airports to fly into in Franklin County?
Get ready to pack your bags and jet into Lambert-St. Louis Intl. Airport (STL), Franklin County's main flight hub. Secure a seat on one of the 4,902 flights that land here every month.
When is the cheapest time to fly to Franklin County?
Consider leaving earlier in the week to score the best airfare to Franklin County. Tuesday is routinely the most affordable day to fly, with Monday a close second. Saturday often has the highest prices. This is because many travelers choose to start their trip on a weekend.
How much is a plane ticket to Franklin County?
In the last seven days, airfares to Franklin County ranged between HK$1,712 and HK$8,832. Prices tend to rise over time, so find a top deal today.
What is the best time to go to Franklin County?
Summer begins June 20 in the Northern Hemisphere, and these warmer months are a fantastic time to visit the top Franklin County city of Washington. Average temperatures fluctuate between 18ºC and 29ºC throughout this season. The biggest crowds flock here in April, June and September.
What months are the cheapest to book a flight to Franklin County?
The best month to book low-cost airfares to Franklin County is February. Bear in mind that in the U.S, an expensive time to secure a ticket is during the busy month of December.

Book with confidence

About Franklin County

Expedia offers flights to Franklin County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Franklin County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.
About Franklin County
*Available to Expedia members.