Cheap Flights to Franklin County from $28

View $28 flight on Mon, Jul 27, 2026Opens in a new window

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Popular airlines to Franklin County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Frontier Airlines

  • Alaska Airlines

  • Air Canada

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How much is the cheapest flight to Franklin County?

Prices were available within the past 7 days and start at $28 for one-way flights and $56 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Aug 31 - Wed, Sep 2
ATL
Atlanta
STL
St. Louis
$56 Roundtrip, just found
$56
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Aug 31 from Atlanta to St. Louis, returning Wed, Sep 2, priced at $56 just found
Frontier Airlines
Mon, May 25 - Wed, May 27
ATL
Atlanta
STL
St. Louis
$62 Roundtrip, found 7 hours ago
$62
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Mon, May 25 from Atlanta to St. Louis, returning Wed, May 27, priced at $62 found 7 hours ago
Frontier Airlines
Wed, Aug 19 - Tue, Aug 25
DEN
Denver
STL
St. Louis
$66 Roundtrip, just found
$66
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Aug 19 from Denver to St. Louis, returning Tue, Aug 25, priced at $66 just found
Frontier Airlines
Thu, May 28 - Mon, Jun 1
ATL
Atlanta
STL
St. Louis
$72 Roundtrip, found 13 hours ago
$72
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Thu, May 28 from Atlanta to St. Louis, returning Mon, Jun 1, priced at $72 found 13 hours ago
Frontier Airlines
Sat, May 30 - Sat, Jun 6
DFW
Dallas
STL
St. Louis
$74 Roundtrip, found 2 hours ago
$74
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sat, May 30 from Dallas to St. Louis, returning Sat, Jun 6, priced at $74 found 2 hours ago
Frontier Airlines
Sat, Jun 6 - Fri, Jun 12
DFW
Dallas
STL
St. Louis
$78 Roundtrip, just found
$78
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Jun 6 from Dallas to St. Louis, returning Fri, Jun 12, priced at $78 just found
Delta
Mon, Aug 31 - Wed, Sep 2
ATL
Atlanta
STL
St. Louis
$102 Roundtrip, just found
$102
Roundtrip
just found
Select Delta flight, departing Mon, Aug 31 from Atlanta to St. Louis, returning Wed, Sep 2, priced at $102 just found
Southwest Airlines
Fri, Jun 12 - Sun, Jun 14
ATL
Atlanta
STL
St. Louis
$119 Roundtrip, just found
$119
Roundtrip
just found
Select Southwest Airlines flight, departing Fri, Jun 12 from Atlanta to St. Louis, returning Sun, Jun 14, priced at $119 just found
American Airlines
Wed, May 27 - Tue, Jun 2
ATL
Atlanta
STL
St. Louis
$197 Roundtrip, found 1 hour ago
$197
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Wed, May 27 from Atlanta to St. Louis, returning Tue, Jun 2, priced at $197 found 1 hour ago
United
Wed, May 27 - Tue, Jun 2
ATL
Atlanta
STL
St. Louis
$197 Roundtrip, found 1 hour ago
$197
Roundtrip
found 1 hour ago
Select United flight, departing Wed, May 27 from Atlanta to St. Louis, returning Tue, Jun 2, priced at $197 found 1 hour ago

Airports in Franklin County

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Flights from $292
STL
Lambert-St. Louis Intl.
Cheapest
Flights from $292

Trending flights to Franklin County

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

Frontier Airlines
Mon, Aug 31 - Wed, Sep 2
ATL
Atlanta
STL
St. Louis
$56 Roundtrip, just found
$56
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Aug 31 from Atlanta to St. Louis, returning Wed, Sep 2, priced at $56 just found

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. $56 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 Atlanta (ATL), you could've nabbed a cheap ticket for just $28 in the last seven days. Round-trip journeys to Franklin County ranged from only $56 to $197 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 $56 and $197. Prices tend to rise over time, so find a top deal today.
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.
How long is a flight to Franklin County?
Your flight to Franklin County could be short or long depending on where you depart from. Before you cram your laptop with movies and TV shows, take a look at the average flight times for these well-known domestic routes:

  • Chicago, IL (ORD-OHare Intl.) to Lambert-St. Louis Intl. Airport (STL) - 1 hour and 17 minutes
  • Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to Lambert-St. Louis Intl. Airport (STL) - 1 hour and 43 minutes
  • Denver, CO (DEN-Denver Intl.) to Lambert-St. Louis Intl. Airport (STL) - 2 hours and 6 minutes

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 65ºF and 85ºF throughout this season. The biggest crowds flock here in April, June and September.

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Travel information

*Flight schedules are subject to change.

*Available to One Key members.

 

*Flight schedules are subject to change.

*Available to One Key members.

 

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