Flights from Ontario to Saint Louis (ONT → STL)

ONT
Ontario
Ontario International Airport, USA
STL
Saint Louis
Saint Louis Airport, USA
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No direct flights found. Here are the 20 fastest 1-stop options.
viaLas Vegas(LAS)
ONT→LAS+1h 30mLAS→STL
4h 27m
viaDenver(DEN)
ONT→DEN+1h 30mDEN→STL
4h 30m
viaPhoenix(PHX)
ONT→PHX+1h 30mPHX→STL
4h 30m
viaSalt Lake City(SLC)
ONT→SLC+1h 30mSLC→STL
4h 44m
viaDallas(DFW)
ONT→DFW+1h 30mDFW→STL
4h 47m
viaDallas(DAL)
ONT→DAL+1h 30mDAL→STL
4h 48m
viaAustin(AUS)
ONT→AUS+1h 30mAUS→STL
5h 8m
viaChicago(MDW)
ONT→MDW+1h 30mMDW→STL
5h 12m
viaChicago(ORD)
ONT→ORD+1h 30mORD→STL
5h 12m
viaHouston(IAH)
ONT→IAH+1h 30mIAH→STL
5h 17m
viaNashville(BNA)
ONT→BNA+1h 30mBNA→STL
5h 19m
viaHouston(HOU)
ONT→HOU+1h 30mHOU→STL
5h 20m
viaSacramento(SMF)
ONT→SMF+1h 30mSMF→STL
5h 24m
viaSan Francisco(SFO)
ONT→SFO+1h 30mSFO→STL
5h 28m
viaAtlanta(ATL)
ONT→ATL+1h 30mATL→STL
6h
viaSan Jose Cabo(SJD)
ONT→SJD+1h 30mSJD→STL
6h 9m
viaPortland(PDX)
ONT→PDX+1h 30mPDX→STL
6h 18m
viaCharlotte(CLT)
ONT→CLT+1h 30mCLT→STL
6h 31m
viaSeattle(SEA)
ONT→SEA+1h 30mSEA→STL
6h 33m
viaBaltimore(BWI)
ONT→BWI+1h 30mBWI→STL
7h 13m
Search all options on Kiwi.com → Total times include an estimated 90-minute layover. Actual times vary by airline and connection.

Frequently asked questions

Are there direct flights from Ontario to Saint Louis? Currently, there are no direct flights from ONT to STL. You may need to connect through another airport.

Related guides for this route

Sibling pages from across Flightmaps — fares, visa rules, country aggregations, and per-airline routes for Ontario → Saint Louis.

Cheap flights from Ontario to Saint Louis Cheapest month to fly to Saint Louis Flights from USA Flights to USA Visa-free with USA passport All airports in USA

Try a nearby airport to Ontario

Flights to Saint Louis (STL) from other airports within 350 km of Ontario. Often unlocks cheaper fares or better times.

SNA → STL 48 km from ONT Santa Ana → Saint Louis USA · 48 destinations LGB → STL 57 km from ONT Long Beach → Saint Louis USA · 18 destinations BUR → STL 71 km from ONT Burbank → Saint Louis USA · 31 destinations LAX → STL 75 km from ONT Los Angeles → Saint Louis USA · 181 destinations VNY → STL 84 km from ONT Los Angeles → Saint Louis USA · 9 destinations

Or try a nearby airport to Saint Louis

Flights from Ontario (ONT) to other airports within 350 km of Saint Louis.

ONT → BLV 54 km from STL Ontario → Belleville USA · 11 destinations ONT → COU 160 km from STL Ontario → Columbia USA · 8 destinations ONT → PIA 221 km from STL Ontario → Peoria USA · 11 destinations ONT → BMI 230 km from STL Ontario → Bloomington USA · 6 destinations ONT → EVV 260 km from STL Ontario → Evansville USA · 8 destinations

Other flights from Ontario (ONT)

Atlanta (ATL) Austin (AUS) Baltimore (BWI) Boise (BOI) Charlotte (CLT) Chicago (MDW) Chicago (ORD) Dallas (DAL) All 31 destinations →

Other flights from Saint Louis (STL)

Atlanta (ATL) Austin (AUS) Baltimore (BWI) Boston (BOS) Burbank (BUR) Cancun (CUN) Charleston (CHS) Charlotte (CLT) All 67 destinations →