Flights from Ontario

Cheapest flights from Ontario

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Aug 22 - Sat, Aug 22

BOI

Boise

SAN

San Diego Intl.

$157 Roundtrip, found 5 days ago

$157

Roundtrip

found 5 days ago

Select Southwest Airlines flight, departing Sat, Aug 22 from Boise to San Diego Intl., returning Sat, Aug 22, priced at $157 found 5 days ago

Sat, Aug 22 - Sat, Aug 22

BOI

Boise

SAN

San Diego Intl.

$172 Roundtrip, found 5 days ago

$172

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Sat, Aug 22 from Boise to San Diego Intl., returning Sat, Aug 22, priced at $172 found 5 days ago

Sat, Aug 22 - Sat, Aug 22

BOI

Boise

SAN

San Diego Intl.

$177 Roundtrip, found 5 days ago

$177

Roundtrip

found 5 days ago

Select United flight, departing Sat, Aug 22 from Boise to San Diego Intl., returning Sat, Aug 22, priced at $177 found 5 days ago

Sat, Aug 22 - Sat, Aug 22

BOI

Boise

SAN

San Diego Intl.

$177 Roundtrip, found 5 days ago

$177

Roundtrip

found 5 days ago

Select Delta flight, departing Sat, Aug 22 from Boise to San Diego Intl., returning Sat, Aug 22, priced at $177 found 5 days ago

Sat, Aug 22 - Sat, Aug 22

BOI

Boise

SAN

San Diego Intl.

$177 Roundtrip, found 5 days ago

$177

Roundtrip

found 5 days ago

Select American Airlines flight, departing Sat, Aug 22 from Boise to San Diego Intl., returning Sat, Aug 22, priced at $177 found 5 days ago

Sat, Aug 22 - Sat, Aug 22

BOI

Boise

SAN

San Diego Intl.

$207 Roundtrip, found 5 days ago

$207

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Sat, Aug 22 from Boise to San Diego Intl., returning Sat, Aug 22, priced at $207 found 5 days ago

Sat, Aug 22 - Sat, Aug 22

BOI

Boise

SAN

San Diego Intl.

$211 Roundtrip, found 5 days ago

$211

Roundtrip

found 5 days ago

Select Alaska Airlines flight, departing Sat, Aug 22 from Boise to San Diego Intl., returning Sat, Aug 22, priced at $211 found 5 days ago

Sun, Aug 23 - Wed, Aug 26

BOI

Boise

SEA

Seattle - Tacoma Intl.

$224 Roundtrip, found 19 hours ago

$224

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Sun, Aug 23 from Boise to Seattle - Tacoma Intl., returning Wed, Aug 26, priced at $224 found 19 hours ago

Fri, Oct 2 - Sun, Oct 4

BOI

Boise

PHX

Sky Harbor Intl.

$227 Roundtrip, found 3 days ago

$227

Roundtrip

found 3 days ago

Select Southwest Airlines flight, departing Fri, Oct 2 from Boise to Sky Harbor Intl., returning Sun, Oct 4, priced at $227 found 3 days ago

Tue, Aug 18 - Wed, Aug 26

BOI

Boise

SEA

Seattle - Tacoma Intl.

$230 Roundtrip, found 19 hours ago

$230

Roundtrip

found 19 hours ago

Select Frontier Airlines flight, departing Tue, Aug 18 from Boise to Seattle - Tacoma Intl., returning Wed, Aug 26, priced at $230 found 19 hours ago

Fri, Oct 2 - Sun, Oct 4

BOI

Boise

PHX

Sky Harbor Intl.

$233 Roundtrip, found 3 days ago

$233

Roundtrip

found 3 days ago

Select Southwest Airlines flight, departing Fri, Oct 2 from Boise to Sky Harbor Intl., returning Sun, Oct 4, priced at $233 found 3 days ago

Sat, Aug 22 - Sat, Aug 22

BOI

Boise

CLD

McClellan-Palomar

$547 Roundtrip, found 5 days ago

$547

Roundtrip

found 5 days ago

Select American Airlines flight, departing Sat, Aug 22 from Boise to McClellan-Palomar, returning Sat, Aug 22, priced at $547 found 5 days ago

Fri, Aug 21 - Sun, Aug 23

BOI

Boise

PAE

Seattle Paine Field Intl. Airport

$568 Roundtrip, found 19 hours ago

$568

Roundtrip

found 19 hours ago

Select Alaska Airlines flight, departing Fri, Aug 21 from Boise to Seattle Paine Field Intl. Airport, returning Sun, Aug 23, priced at $568 found 19 hours ago

Mon, Oct 5 - Thu, Oct 15

BOI

Boise

FCO

Fiumicino - Leonardo da Vinci Intl.

$978 Roundtrip, found 4 days ago

$978

Roundtrip

found 4 days ago

Select United flight, departing Mon, Oct 5 from Boise to Fiumicino - Leonardo da Vinci Intl., returning Thu, Oct 15, priced at $978 found 4 days ago

Mon, Oct 5 - Thu, Oct 15

BOI

Boise

FCO

Fiumicino - Leonardo da Vinci Intl.

$998 Roundtrip, found 4 days ago

$998

Roundtrip

found 4 days ago

Select Air Canada flight, departing Mon, Oct 5 from Boise to Fiumicino - Leonardo da Vinci Intl., returning Thu, Oct 15, priced at $998 found 4 days ago

Mon, Oct 5 - Thu, Oct 15

BOI

Boise

FCO

Fiumicino - Leonardo da Vinci Intl.

$1,036 Roundtrip, found 4 days ago

$1,036

Roundtrip

found 4 days ago

Select KLM flight, departing Mon, Oct 5 from Boise to Fiumicino - Leonardo da Vinci Intl., returning Thu, Oct 15, priced at $1,036 found 4 days ago

Mon, Oct 5 - Thu, Oct 15

BOI

Boise

FCO

Fiumicino - Leonardo da Vinci Intl.

$1,095 Roundtrip, found 4 days ago

$1,095

Roundtrip

found 4 days ago

Select Lufthansa flight, departing Mon, Oct 5 from Boise to Fiumicino - Leonardo da Vinci Intl., returning Thu, Oct 15, priced at $1,095 found 4 days ago

Mon, Oct 5 - Thu, Oct 15

BOI

Boise

FCO

Fiumicino - Leonardo da Vinci Intl.

$1,262 Roundtrip, found 4 days ago

$1,262

Roundtrip

found 4 days ago

Select British Airways flight, departing Mon, Oct 5 from Boise to Fiumicino - Leonardo da Vinci Intl., returning Thu, Oct 15, priced at $1,262 found 4 days ago

Mon, Oct 5 - Thu, Oct 15

BOI

Boise

FCO

Fiumicino - Leonardo da Vinci Intl.

$1,415 Roundtrip, found 4 days ago

$1,415

Roundtrip

found 4 days ago

Select Iberia flight, departing Mon, Oct 5 from Boise to Fiumicino - Leonardo da Vinci Intl., returning Thu, Oct 15, priced at $1,415 found 4 days ago

Mon, Oct 5 - Thu, Oct 15

BOI

Boise

FCO

Fiumicino - Leonardo da Vinci Intl.

$1,428 Roundtrip, found 4 days ago

$1,428

Roundtrip

found 4 days ago

Select Finnair flight, departing Mon, Oct 5 from Boise to Fiumicino - Leonardo da Vinci Intl., returning Thu, Oct 15, priced at $1,428 found 4 days ago