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Flights to Ontario

63 cities in 16 countries. In each country, prices we can stand behind come first, then the cheapest.

Departure cities with a recent price: 63

Recent prices: 424

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Fares Aviasales flagged as unusually low

CityFromTripDatesAirportsStopsAirlineFound
Las Vegas$49one-way3 NovLAS → ONTnonstopFrontier Airlinesfound todayOpen this trip
San Francisco$69one-way29 OctSFO → ONTnonstopFrontier Airlinesfound yesterdayOpen this trip
Guadalajara$134one-way2 DecGDL → ONTstops unknownVolarisfound 2 days agoOpen this trip
Columbus$362one-way27 OctCMH → ONTstops unknownSouthwest Airlinesfound 2 days agoOpen this trip

When these trips depart

Every price counted here was found on or after 13 Oct.

Return

One-way

  • October 2026: 14 cities with a price listed here, from $359

    Managua · 22 Oct · found today · Open this trip

    As low as $87 · Portland · 20 Oct · found 4 days ago · Open this trip

  • November 2026: 14 cities with a price listed here, from $49

    Las Vegas · 3 Nov · found today · Open this trip

  • December 2026: 7 cities with a price listed here, from $19

    San Francisco · 12 Dec · found 3 days ago · Open this trip

  • January 2027: 3 cities with a price listed here, from $139

    Orlando · 6 Jan 2027 · found 5 days ago · Open this trip

  • February 2027: 2 cities with a price listed here, from $172

    New York · 4 Feb 2027 · found 3 hours ago · Open this trip

    As low as $110 · Minneapolis · 4 Feb 2027 · found 6 days ago · Open this trip

  • April 2027: 1 city with a price listed here, from $277

    Tulsa · 2 Apr 2027 · found today · Open this trip

  • May 2027: 1 city with a price listed here, from $430

    San Pedro Sula · 28 May 2027 · found 2 days ago · Open this trip

Everywhere, by country

1 traveler · Economy

CityFromTripDatesAirportsStopsAirlineFound
United States
San Francisco$19one-way12 DecSFO → ONTnonstopFrontier Airlinesfound 3 days agoOpen this trip
Las Vegas$49one-way3 NovLAS → ONTnonstopFrontier Airlinesfound todayOpen this trip
Portland$87one-way20 OctPDX → ONT1 stopAmerican Airlinesfound 4 days agoOpen this trip
Denver$90one-way21 NovDEN → ONTnonstopFrontier Airlinesfound 2 days agoOpen this trip
Chicago$107one-way4 NovORD → ONT1 stopFrontier Airlinesfound 6 days agoOpen this trip
Minneapolis$110one-way4 Feb 2027MSP → ONT1 stopFrontier Airlinesfound 6 days agoOpen this trip
Las Vegas$114return3 Nov – 7 NovLAS → ONTout nonstop, back nonstopFrontier Airlinesfound todaySee prices for these dates
Las VegasAs low as $88return3 Nov – 2 DecLAS → ONTout nonstop, back nonstopFrontier Airlinesfound yesterdaySee prices for these dates
Houston$120one-way18 DecIAH → ONT1 stopFrontier Airlinesfound 3 days agoOpen this trip
Washington$120one-way7 NovDCA → ONT1 stopFrontier Airlinesfound 6 days agoOpen this trip
Charlotte$127one-way7 DecCLT → ONT1 stopFrontier Airlinesfound 3 days agoOpen this trip
Seattle$127one-way18 DecSEA → ONT1 stopFrontier Airlinesfound 4 days agoOpen this trip
Austin$128one-way10 NovAUS → ONT1 stopFrontier Airlinesfound 2 days agoOpen this trip
Dallas$131one-way23 NovDAL → ONT1 stopSouthwest Airlinesfound yesterdayOpen this trip
Denver$137return7 Nov – 9 NovDEN → ONTout nonstop, back nonstopFrontier Airlinesfound yesterdaySee prices for these dates
Orlando$139one-way6 Jan 2027MCO → ONT1 stopFrontier Airlinesfound 5 days agoOpen this trip
Omaha$142one-way3 NovOMA → ONT1 stopSouthwest Airlinesfound 6 days agoOpen this trip
San Francisco$146return6 Nov – 9 NovSFO → ONTout nonstop, back nonstopFrontier Airlinesfound todaySee prices for these dates
San FranciscoAs low as $67return16 Nov – 22 NovSFO → ONTout nonstop, back nonstopFrontier Airlinesfound 2 days agoSee prices for these dates
St Louis$146one-way3 DecSTL → ONTstops unknownFrontier Airlinesfound 6 days agoOpen this trip
Salt Lake City$156one-way1 NovSLC → ONT1 stopFrontier Airlinesfound 6 days agoOpen this trip
Redmond$164one-way12 NovRDM → ONT1 stopAlaska Airlinesfound 3 days agoOpen this trip
New York$172one-way4 Feb 2027JFK → ONT1 stopAlaska Airlinesfound 3 hours agoOpen this trip
New YorkAs low as $148one-way4 NovLGA → ONT1 stopSouthwest Airlinesfound 5 days agoOpen this trip
Miami$174one-way28 Jan 2027MIA → ONT1 stopFrontier Airlinesfound 6 days agoOpen this trip
Oakland$178one-way24 NovOAK → ONTnonstopSouthwest Airlinesfound yesterdayOpen this trip
Detroit$215one-way18 NovDTW → ONTstops unknownFrontier Airlinesfound 3 days agoOpen this trip
San Antonio$216one-way25 OctSAT → ONT1 stopFrontier Airlinesfound 4 days agoOpen this trip
Tulsa$277one-way2 Apr 2027TUL → ONT1 stopAllegiant Airfound todayOpen this trip
Dallas$281return23 Nov – 30 NovDFW → ONTout nonstop, back 1 stopFrontier Airlinesfound yesterdaySee prices for these dates
Spokane$282one-way24 OctGEG → ONT1 stopAmerican Airlinesfound 5 days agoOpen this trip
Savannah$287one-way20 OctSAV → ONT1 stopSouthwest Airlinesfound 3 days agoOpen this trip
Imperial$306one-way27 OctIPL → ONT2 stopsSouthern Airways Expressfound 2 days agoOpen this trip
Bellingham$307one-way27 OctBLI → ONT1 stopAlaska Airlinesfound 2 days agoOpen this trip
San Diego$307one-way10 NovCLD → ONT1 stopUnited Airlinesfound 4 days agoOpen this trip
Tampa$311return30 Dec – 6 Jan 2027TPA → ONTout 1 stop, back 1 stopSouthwest Airlinesfound todaySee prices for these dates
Memphis$322one-way20 OctMEM → ONT1 stopSouthwest Airlinesfound yesterdayOpen this trip
New York$342return4 Feb 2027 – 10 Feb 2027JFK → ONTout 1 stop, back 1 stopAlaska Airlinesfound 23 hours agoSee prices for these dates
New YorkAs low as $311return5 Nov – 11 NovLGA → ONTout 1 stop, back 1 stopSouthwest Airlinesfound 4 days agoSee prices for these dates
Columbus$362one-way27 OctCMH → ONTstops unknownSouthwest Airlinesfound 2 days agoOpen this trip
Yuma$392one-way28 OctYUM → ONT1 stopAmerican Airlinesfound yesterdayOpen this trip
Spokane$419return1 Nov – 9 NovGEG → ONTout 1 stop, back 1 stopUnited Airlinesfound todaySee prices for these dates
Tulsa$442return1 Apr 2027 – 6 Apr 2027TUL → ONTout 1 stop, back 1 stopAmerican Airlinesfound todaySee prices for these dates
TulsaAs low as $388return9 Nov – 13 NovTUL → ONTout 1 stop, back 1 stopSouthwest Airlinesfound 5 days agoSee prices for these dates
Lancaster$463one-way28 OctLNS → ONT1 stopUnited Airlinesfound yesterdayOpen this trip
Boston$536return30 Dec – 2 Jan 2027BOS → ONTout 1 stop, back 1 stopSouthwest Airlinesfound yesterdaySee prices for these dates
Nome$593one-way23 OctOME → ONT2 stopsAlaska Airlinesfound 6 days agoOpen this trip
Houston$260return10 Dec – 13 DecIAH → ONTout 1 stop, back 1 stopFrontier Airlinesfound 3 days agoSee prices for these dates
Washington$289return3 Nov – 10 NovDCA → ONTout 1 stop, back 1 stopFrontier Airlinesfound 3 days agoSee prices for these dates
Boise$291return23 Oct – 25 OctBOI → ONTout 1 stop, back 1 stopFrontier Airlinesfound 2 days agoSee prices for these dates
Oakland$312return25 Nov – 29 NovOAK → ONTout nonstop, back nonstopSouthwest Airlinesfound 3 days agoSee prices for these dates
Miami$366return27 Oct – 17 NovMIA → ONTout 1 stop, back 3 stopsFrontier Airlinesfound 3 days agoSee prices for these dates
St Louis$366return18 Dec – 20 DecSTL → ONTout 1 stop, back 1 stopFrontier Airlinesfound 2 days agoSee prices for these dates
Memphis$481return8 Apr 2027 – 12 Apr 2027MEM → ONTout 1 stop, back 1 stopAmerican Airlinesfound 3 days agoSee prices for these dates
San Jose$622return16 Nov – 22 NovSJC → ONTout 1 stop, back 1 stopFrontier Airlinesfound 2 days agoSee prices for these dates
Austin$200return13 Jan 2027 – 20 Jan 2027AUS → ONTout 1 stop, back 1 stopFrontier Airlinesfound 5 days agoSee prices for these dates
Chicago$223return22 Oct – 29 OctORD → ONTout 1 stop, back 1 stopFrontier Airlinesfound 4 days agoSee prices for these dates
Detroit$237return12 Dec – 22 DecDTW → ONTout 1 stop, back 1 stopFrontier Airlinesfound 5 days agoSee prices for these dates
Seattle$260return1 Dec – 4 DecSEA → ONTout nonstop, back nonstopAlaska Airlinesfound 4 days agoSee prices for these dates
Fargo$332return13 Nov – 16 NovFAR → ONTout 1 stop, back 1 stopFrontier Airlinesfound 4 days agoSee prices for these dates
Cincinnati$360return21 Nov – 27 NovCVG → ONTout 1 stop, back 1 stopFrontier Airlinesfound 5 days agoSee prices for these dates
Louisville$366return24 Dec – 31 DecSDF → ONTout 1 stop, back 2 stopsAmerican Airlinesfound 4 days agoSee prices for these dates
Everett$380return1 Dec – 4 DecPAE → ONTout 1 stop, back 1 stopAlaska Airlinesfound 4 days agoSee prices for these dates
Charlotte$398return30 Oct – 3 NovCLT → ONTout 1 stop, back 1 stopFrontier Airlinesfound 4 days agoSee prices for these dates
Philadelphia$411return9 Apr 2027 – 16 Apr 2027PHL → ONTout 1 stop, back 1 stopSouthwest Airlinesfound 6 days agoSee prices for these dates
Baltimore$452return21 Nov – 29 NovBWI → ONTout 1 stop, back 1 stopFrontier Airlinesfound 5 days agoSee prices for these dates
Wichita$458return13 Nov – 15 NovICT → ONTout 1 stop, back 1 stopAmerican Airlinesfound 5 days agoSee prices for these dates
Mexico
Guadalajara$134one-way2 DecGDL → ONTstops unknownVolarisfound 2 days agoOpen this trip
Mexicali$282one-way20 OctMXL → ONT1 stopVolarisfound 3 days agoOpen this trip
Loreto$430one-way26 OctLTO → ONT1 stopAmerican Airlinesfound 3 days agoOpen this trip
Guadalajara$375return25 Oct – 3 NovGDL → ONTout nonstop, back nonstopVolarisfound 3 days agoSee prices for these dates
Cancun$890return26 Oct – 26 OctCUN → ONTout 1 stop, back 2 stopsUnited Airlinesfound 5 days agoSee prices for these dates
El Salvador
San Salvador$314one-way9 DecSAL → ONT2 stopsAmerican Airlinesfound 6 days agoOpen this trip
Nicaragua
Managua$359one-way22 OctMGA → ONT1 stopavianca airlinesfound todayOpen this trip
Honduras
San Pedro Sula$430one-way28 May 2027SAP → ONT2 stopsAmerican Airlinesfound 2 days agoOpen this trip
French Polynesia
Papeete$464one-way9 Jan 2027PPT → ONTstops unknownAlaska Airlinesfound 3 days agoOpen this trip
Costa Rica
San Jose$579return11 Nov – 19 NovSJO → ONTout 1 stop, back 1 stopavianca airlinesfound yesterdaySee prices for these dates
Italy
Venice$590return17 Apr 2027 – 1 May 2027VCE → ONTout 2 stops, back 1 stopIberiafound yesterdaySee prices for these dates
Naples$908return25 Jun 2027 – 9 Jul 2027NAP → ONTout 2 stops, back 2 stopsBritish Airwaysfound 6 days agoSee prices for these dates
Mozambique
Maputo$1,060one-way4 NovMPM → ONT3 stopsAir Mozambiquefound yesterdayOpen this trip
Armenia
Yerevan$1,064return3 Nov – 3 DecEVN → ONTout 2 stops, back 2 stopsLufthansafound yesterdaySee prices for these dates
Lithuania
Vilnius$877return24 Nov – 8 DecVNO → ONTout 2 stops, back 2 stopsNORRAfound 3 days agoSee prices for these dates
Canada
VancouverC$413 (US$292)return1 Nov – 5 NovYVR → ONTout 1 stop, back 1 stopAlaska Airlinesfound 4 days agoSee prices for these dates
Colombia
Medellin$774return18 Mar 2027 – 28 Mar 2027MDE → ONTout 2 stops, back 2 stopsJetSmartfound 4 days agoSee prices for these dates
Turkiye
Istanbul$799return16 Jan 2027 – 11 Mar 2027IST → ONTout 2 stops, back 2 stopsLufthansafound 4 days agoSee prices for these dates
Thailand
Bangkok$867return15 May 2027 – 31 May 2027BKK → ONTout 1 stop, back 1 stopSTARLUX Airlinesfound 6 days agoSee prices for these dates
Russia
Nizhniy Novgorod$1,788return7 Nov – 30 NovGOJ → ONTout 4 stops, back 4 stopsAeroflotfound 4 days agoSee prices for these dates

Prices are what travelers' searches on Aviasales found in the last 7 days: the price the seller showed on Aviasales; bags may cost extra. Canadian dollars at the Bank of Canada rate of 2026-10-16, US dollars in brackets. Fares change, so check today's price before you book. How our prices work