Meramec Caverns. Franklin County. Missouri. USA.

Franklin County Flights - Book Cheap Flights to Franklin County

View RM662 flight on Thu, 29 Oct 2026Opens in a new window

Popular airlines to Franklin County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Frontier Airlines

  • Alaska Airlines

  • Air Canada

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Cheap round-trip flights to Franklin County

Prices were available within the past 7 days and start at RM662 for one-way flights and RM1,210 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 29 Oct - Wed, 4 Nov
SEA
Seattle
STL
St. Louis
RM1,210 Return, found 1 day ago
RM1,210
Return
found 1 day ago
Select Delta flight, departing Thu, 29 Oct from Seattle to St. Louis, returning Wed, 4 Nov, priced at RM1,210 found 1 day ago
United
Thu, 29 Oct - Wed, 4 Nov
SEA
Seattle
STL
St. Louis
RM1,320 Return, found 1 day ago
RM1,320
Return
found 1 day ago
Select United flight, departing Thu, 29 Oct from Seattle to St. Louis, returning Wed, 4 Nov, priced at RM1,320 found 1 day ago
Delta
Thu, 29 Oct - Wed, 4 Nov
SEA
Seattle
STL
St. Louis
RM1,397 Return, found 1 day ago
RM1,397
Return
found 1 day ago
Select Delta flight, departing Thu, 29 Oct from Seattle to St. Louis, returning Wed, 4 Nov, priced at RM1,397 found 1 day ago
Delta
Thu, 29 Oct - Wed, 4 Nov
SEA
Seattle
STL
St. Louis
RM1,415 Return, found 1 day ago
RM1,415
Return
found 1 day ago
Select Delta flight, departing Thu, 29 Oct from Seattle to St. Louis, returning Wed, 4 Nov, priced at RM1,415 found 1 day ago
Delta
Thu, 29 Oct - Wed, 4 Nov
SEA
Seattle
STL
St. Louis
RM1,483 Return, found 1 day ago
RM1,483
Return
found 1 day ago
Select Delta flight, departing Thu, 29 Oct from Seattle to St. Louis, returning Wed, 4 Nov, priced at RM1,483 found 1 day ago
Delta
Thu, 29 Oct - Wed, 4 Nov
SEA
Seattle
STL
St. Louis
RM1,511 Return, found 1 day ago
RM1,511
Return
found 1 day ago
Select Delta flight, departing Thu, 29 Oct from Seattle to St. Louis, returning Wed, 4 Nov, priced at RM1,511 found 1 day ago
United
Thu, 29 Oct - Wed, 4 Nov
SEA
Seattle
STL
St. Louis
RM1,523 Return, found 1 day ago
RM1,523
Return
found 1 day ago
Select United flight, departing Thu, 29 Oct from Seattle to St. Louis, returning Wed, 4 Nov, priced at RM1,523 found 1 day ago
American Airlines
Thu, 29 Oct - Wed, 4 Nov
SEA
Seattle
STL
St. Louis
RM1,723 Return, found 1 day ago
RM1,723
Return
found 1 day ago
Select American Airlines flight, departing Thu, 29 Oct from Seattle to St. Louis, returning Wed, 4 Nov, priced at RM1,723 found 1 day ago
Qatar Airways
Fri, 26 Jun - Tue, 30 Jun
KUL
Kuala Lumpur
STL
St. Louis
RM5,579 Return, found 1 day ago
RM5,579
Return
found 1 day ago
Select Qatar Airways flight, departing Fri, 26 Jun from Kuala Lumpur to St. Louis, returning Tue, 30 Jun, priced at RM5,579 found 1 day ago
Air Canada
Mon, 10 Aug - Mon, 24 Aug
KUL
Kuala Lumpur
STL
St. Louis
RM5,658 Return, found 2 days ago
RM5,658
Return
found 2 days ago
Select Air Canada flight, departing Mon, 10 Aug from Kuala Lumpur to St. Louis, returning Mon, 24 Aug, priced at RM5,658 found 2 days 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.

Qatar Airways
Fri, 26 Jun - Tue, 30 Jun
KUL
Kuala Lumpur
STL
St. Louis
RM5,579 Return, found 1 day ago
RM5,579
Return
found 1 day ago
Select Qatar Airways flight, departing Fri, 26 Jun from Kuala Lumpur to St. Louis, returning Tue, 30 Jun, priced at RM5,579 found 1 day 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. RM1,210 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 RM662 in the last seven days. Round-trip journeys to Franklin County ranged from only RM1,210 to RM5,658 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.
How much is a plane ticket to Franklin County?
In the last seven days, airfares to Franklin County ranged between RM1,210 and RM5,658. 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 traveler'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
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