How long is the YX4678 flight?

The timetable allows 3 h 8 min. Boston to St. Louis is 1,680 km (1,044 mi).

Which terminal does YX4678 use?

It usually leaves from Terminal B at Boston Logan International Airport (BOS) and arrives at Terminal 1 at St. Louis Lambert International Airport (STL). Check the flight card above for today's terminal and gate.

What other flight numbers does YX4678 have?

Also listed as RPA4678 (Republic Airlines' ICAO code) and YX 4678.

YX4678 Flight Status Republic Airlines: Boston to St. Louis (RPA4678)

YX 4678 Boston to St. Louis Flight Status

Not scheduled today. Latest flight: September 8th, 2026 ; recent history is in the table below.

YX 4678 Flight Status & Schedule Republic Airlines Boston to St. Louis

Date	From	To	Departure	Arrival	Status	Details
Sep 08	BOS	STL	17:22	19:30	Scheduled	Track >
Sep 07	BOS	STL	17:22	19:30	Scheduled	Track >
Sep 06	BOS	STL	17:22	19:30	Delayed	Track >
Sep 05	BOS	STL	16:59	19:07	Scheduled	Track >
Sep 04	BOS	STL	17:22	19:30	Delayed >1h	Track >
Sep 03	BOS	STL	17:22	19:30	Delayed	Track >
Sep 02	BOS	STL	17:22	19:30	Scheduled	Track >
Sep 01	BOS	STL	17:22	19:30	Scheduled	Track >
Aug 31	BOS	STL	17:22	19:30	Scheduled	Track >
Aug 30	BOS	STL	17:22	19:30	Scheduled	Track >

Republic Airlines operates YX 4678 from Boston to St. Louis, a 1,680 km (1,044 mi) trip. The timetable allows 3 h 8 min; there is not enough recent history yet to say how long it usually takes. It is not flying today; the last flight was scheduled on 8 September 2026.

< All Boston BOS Departures All St. Louis STL Arrivals >

About YX 4678

Route: Boston Logan International Airport BOS to St. Louis Lambert International Airport STL
Distance: 1,680 km (1,044 mi)
Scheduled flight time: 3 h 8 min
Usually departs from: Terminal B

YX 4678 FAQ

How long is the YX4678 flight?: The timetable allows 3 h 8 min. Boston to St. Louis is 1,680 km (1,044 mi).
Which terminal does YX4678 use?: It usually leaves from Terminal B at Boston Logan International Airport (BOS) and arrives at Terminal 1 at St. Louis Lambert International Airport (STL). Check the flight card above for today's terminal and gate.
What other flight numbers does YX4678 have?: Also listed as RPA4678 (Republic Airlines' ICAO code) and YX 4678.

Republic Airlines YX4678 News

Report YX4678 - Republic E170 near Minneapolis on Jul 19th 2017, turbulence injures 4

YX4678 and Boston BOS to St. Louis STL Flights

Flight YX4678 is code-shared by 1 airline using the flight number BA1728

Other flights departing from Boston BOS: B649, AA2940, B61387, WN1257

Other flights arriving at St. Louis STL: UA1181, WN1740, MQ3570, WN1656

All flights connecting Boston BOS to St. Louis STL.