Cheap Flights to Franklin County | Popular Routes to Franklin County from HK$1,433

View HK$1,433 flight on Sun, 15 Mar 2026Opens in a new window

Popular airlines to Franklin County

  • American Airlines

    American Airlines

  • Delta

    Delta

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Frontier Airlines

    Frontier Airlines

  • Alaska Airlines

    Alaska Airlines

  • Air Canada

    Air Canada

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Cheap round-trip flights to Franklin County

Prices were available within the past 7 days and start at HK$1,433 for one-way flights and HK$1,858 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 13 Feb - Sat, 14 Feb
SEA
Seattle
STL
St. Louis
HK$1,858 Return, found 10 hours ago
HK$1,858
Return
found 10 hours ago
Select Delta flight, departing Fri, 13 Feb from Seattle to St. Louis, returning Sat, 14 Feb, priced at HK$1,858 found 10 hours ago
American Airlines
Fri, 13 Feb - Sat, 14 Feb
SEA
Seattle
STL
St. Louis
HK$2,328 Return, found 10 hours ago
HK$2,328
Return
found 10 hours ago
Select American Airlines flight, departing Fri, 13 Feb from Seattle to St. Louis, returning Sat, 14 Feb, priced at HK$2,328 found 10 hours ago
Alaska Airlines
Fri, 13 Feb - Sat, 14 Feb
SEA
Seattle
STL
St. Louis
HK$2,339 Return, found 10 hours ago
HK$2,339
Return
found 10 hours ago
Select Alaska Airlines flight, departing Fri, 13 Feb from Seattle to St. Louis, returning Sat, 14 Feb, priced at HK$2,339 found 10 hours ago
American Airlines
Fri, 13 Feb - Sat, 14 Feb
SEA
Seattle
STL
St. Louis
HK$2,373 Return, found 10 hours ago
HK$2,373
Return
found 10 hours ago
Select American Airlines flight, departing Fri, 13 Feb from Seattle to St. Louis, returning Sat, 14 Feb, priced at HK$2,373 found 10 hours ago
Delta
Sat, 17 Jan - Sun, 18 Jan
LAX
Los Angeles
STL
St. Louis
HK$2,460 Return, found 2 days ago
HK$2,460
Return
found 2 days ago
Select Delta flight, departing Sat, 17 Jan from Los Angeles to St. Louis, returning Sun, 18 Jan, priced at HK$2,460 found 2 days ago
Delta
Fri, 13 Feb - Sat, 14 Feb
SEA
Seattle
STL
St. Louis
HK$2,557 Return, found 10 hours ago
HK$2,557
Return
found 10 hours ago
Select Delta flight, departing Fri, 13 Feb from Seattle to St. Louis, returning Sat, 14 Feb, priced at HK$2,557 found 10 hours ago
United
Thu, 22 Jan - Thu, 22 Jan
YYZ
Toronto
STL
St. Louis
HK$2,819 Return, found 23 hours ago
HK$2,819
Return
found 23 hours ago
Select United flight, departing Thu, 22 Jan from Toronto to St. Louis, returning Thu, 22 Jan, priced at HK$2,819 found 23 hours ago
United
Sat, 17 Jan - Sun, 18 Jan
LAX
Los Angeles
STL
St. Louis
HK$3,159 Return, found 2 days ago
HK$3,159
Return
found 2 days ago
Select United flight, departing Sat, 17 Jan from Los Angeles to St. Louis, returning Sun, 18 Jan, priced at HK$3,159 found 2 days ago
Air Canada
Tue, 20 Jan - Wed, 21 Jan
YYZ
Toronto
STL
St. Louis
HK$3,756 Return, found 23 hours ago
HK$3,756
Return
found 23 hours ago
Select Air Canada flight, departing Tue, 20 Jan from Toronto to St. Louis, returning Wed, 21 Jan, priced at HK$3,756 found 23 hours ago
Delta
Thu, 19 Feb - Thu, 26 Feb
TPE
Taipei
STL
St. Louis
HK$6,756 Return, found 11 hours ago
HK$6,756
Return
found 11 hours ago
Select Delta flight, departing Thu, 19 Feb from Taipei to St. Louis, returning Thu, 26 Feb, priced at HK$6,756 found 11 hours ago

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.

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$1,858 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 Seattle (SEA), you could've nabbed a cheap ticket for just HK$1,433 in the last seven days. Round-trip journeys to Franklin County ranged from only HK$1,858 to HK$7,119 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$1,858 and HK$7,119. 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.

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.

China Airlines
Mon, 6 Apr - Thu, 9 Apr
HKG
Hong Kong SAR
STL
St. Louis
HK$7,119 Return, found 6 days ago
HK$7,119
Return
found 6 days ago
Select China Airlines flight, departing Mon, 6 Apr from Hong Kong SAR to St. Louis, returning Thu, 9 Apr, priced at HK$7,119 found 6 days ago
*Available to Expedia members.