Flights from Saint Louis to Ontario (STL → ONT)

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

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

Try a nearby airport to Saint Louis

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

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

Or try a nearby airport to Ontario

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

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

Other flights from Ontario (ONT)

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