
$561 Cheap Frontier Airlines flights Boston (BOS) to St. Louis (STL)
Prices were available within the past 7 days and start at $561 for one-way flights and $457 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Dec 23 - Wed, Dec 31
BOS
Boston
STL
St. Louis
$457 Roundtrip, found 1 day ago
$457
Roundtrip
found 1 day ago

Tue, Dec 23 - Wed, Dec 24
BOS
Boston
STL
St. Louis
$532 Roundtrip, found 1 day ago
$532
Roundtrip
found 1 day ago

Tue, Dec 23 - Mon, Dec 29
BOS
Boston
STL
St. Louis
$602 Roundtrip, found 1 day ago
$602
Roundtrip
found 1 day ago
Find the cheapest month to fly from Boston (BOS) to St. Louis (STL)
February is typically the cheapest month to fly
From $139 - $357 per traveler.
Origin airport | Logan Intl. |
|---|---|
Destination airport | Lambert-St. Louis Intl. |
Airlines serving | American Airlines, Delta, Frontier Airlines, Southwest Airlines, United |
Popular airline | Delta |
Distance | 1669 km |
Average flight time | 2 hours 25 mins |
Most Popular Frontier Airlines Routes from Boston
Most Popular Frontier Airlines Routes from St. Louis
- Washington to Seattle (DCA - SEA)
- Dallas to Orlando (DFW - MCO)
- Baltimore to San Juan (BWI - SJU)
- Newark Liberty Intl. Airport to Denver (EWR - DEN)
- Denver to Boston (DEN - BOS)
- Raleigh to Atlanta (RDU - ATL)
- Los Angeles to Orlando (LAX - MCO)
- Philadelphia to Miami (PHL - MIA)
- Phoenix to Denver (PHX - DEN)
- Boston to Atlanta (BOS - ATL)
Popular Domestic Routes in Lambert-St. Louis Intl.
- New York to San Juan (JFK - SJU)
- Newark Liberty Intl. Airport to Denver (EWR - DEN)
- Seattle to Las Vegas (SEA - LAS)
- Baltimore to San Juan (BWI - SJU)
- Newark Liberty Intl. Airport to Denver (EWR - DEN)
- Atlanta to Las Vegas (ATL - LAS)
- Phoenix to Denver (PHX - DEN)
- Chicago to Dallas (ORD - DFW)
- Atlanta to Las Vegas (ATL - LAS)
- Raleigh to Atlanta (RDU - ATL)