Route guide

Cheap Flights from Boston to St Louis

Compare live fares, then book straight with the provider. EAZAIR never adds a fee.

BOS to STL · 1,044 mi

BOS to STL
1,044 miles

Boston to St Louis flight insights

Cheapest cached price

$322

Checking live fares…

Prices shown may not be current. Last checked: Oct 17, 2026.

Planning a trip from Boston to St Louis? The lowest fare we recorded on this route recently was $322 (last checked Oct 17, 2026); today's live fare for your dates can differ.

Boston to St Louis at a glance

BOS to STL is about 1,044 miles in a straight line. The curved line is an illustration; the route your airline flies may differ.

Route Quick Facts

Quick facts for flights from Boston to St Louis on Eazair
Origin	Boston (BOS)
Destination	St Louis (STL)
Current Lowest Fare	$322
Fares Last Checked	Oct 17, 2026
Distance	1,044 miles (BOS to STL)
Time in St Louis	1 hour behind Boston

Local time in St Louis is 1 hour behind Boston. Boston is on Eastern Time, St Louis on Central Time.

Flight deals from Boston to St Louis

Compare flight deals from Boston to St Louis. We search our partner travel sites to find you a good price. Fares on this route are refreshed from our partner network, and you book directly with the provider. EAZAIR never adds a fee.

Airports for Boston to St Louis flights

Departure · Boston

Logan International (BOS)

Eastern Time

Arrival · St Louis

St. Louis Lambert International (STL)

Central Time

Airline bag fees

Baggage allowances differ significantly between fare classes (Basic/Light vs. Standard/Flex) and can change over time. Always verify the exact allowance for your specific fare with the airline before you fly.

Checked bag fees from each airline's own website
Airline	Carry-on, basic economy	1st checked bag	2nd checked bag	Source
American Airlines	Included	$45	$55	aa.com, Sep 24, 2026
United Airlines	Not included	$40	$50	united.com, Sep 24, 2026
Delta Air Lines	Included	$45	$55	delta.com, Sep 24, 2026
Southwest Airlines	Included	$45	$55	southwest.com, Oct 27, 2026
JetBlue	Included	$45	$59	jetblue.com, Sep 24, 2026
Alaska Airlines	Included	$45	$55	alaskaair.com, Sep 24, 2026
Frontier Airlines	Not included	Varies	Varies	flyfrontier.com, Sep 24, 2026
Sun Country Airlines	Not included	Varies	Varies	suncountry.com, Sep 24, 2026

Domestic US fees per bag, each way, when paid online in advance. "Varies" means the airline prices bags by route and date.

Travel tips

Arrive early for domestic flights

TSA generally recommends arriving at least 2 hours before a domestic departure, more at larger hub airports during peak travel periods.

Pack a mixed carry-on

Keep a change of clothes, chargers, and any essentials in your carry-on rather than only your checked bag, in case of a delay or a bag that doesn't arrive with you.

Screenshot your confirmation

Save a screenshot or PDF of your booking confirmation and boarding pass before you travel, in case you lose signal or battery at the airport.

Check in online when it opens

Most airlines open online check-in 24 hours before departure. Checking in early can help with seat selection and, on some airlines, boarding group assignment.