Cheap Flights from Ontario

393 deals departing from Ontario

Dubai Burj Khalifa and skyline
Save 65%
$1657
$8374
Ontario California aerial with San Gabriel Mountains
ONTDXB
Ontario to Dubai
Qatar Airways
Nonstop·round trip
Jun 29 – Jul 10
Philadelphia skyline with City Hall
Save 55%
$171
$364
Ontario California aerial with San Gabriel Mountains
ONTPHL
Ontario to Philadelphia
Frontier Airlines
Nonstop·round trip
Apr 22 – Apr 26
Portland skyline with Mount Hood
Save 52%
$148
$306
Ontario California aerial with San Gabriel Mountains
ONTPDX
Ontario to Portland
Frontier Airlines
Nonstop·round trip
Apr 28 – May 3
Denver skyline with Rocky Mountains
Save 51%
$91
$186
Ontario California aerial with San Gabriel Mountains
ONTDEN
Ontario to Denver
Frontier Airlines
Nonstop·round trip
Apr 16 – Apr 22
Phoenix skyline with desert mountains
Save 51%
$176
$360
Ontario California aerial with San Gabriel Mountains
ONTPHX
Ontario to Phoenix
Frontier Airlines
Nonstop·round trip
May 30 – Jun 2
Cairo mosque and pyramids at sunset
Save 50%
$648
$1298
Ontario California aerial with San Gabriel Mountains
ONTCAI
Ontario to Cairo
Alaska Airlines
Nonstop·round trip
Oct 27 – Nov 17
Las Vegas Strip with Bellagio fountains
Save 49%
$64
$126
Ontario California aerial with San Gabriel Mountains
ONTLAS
Ontario to Las Vegas
Frontier Airlines
Nonstop·round trip
Apr 13 – Apr 15Ending Soon
Costa Rica tropical landscape
Save 49%
$253
$492
Ontario California aerial with San Gabriel Mountains
ONTSJO
Ontario to San Jose
American Airlines
Nonstop·round trip
May 7 – May 12
Sao Paulo skyline
Save 48%
$724
$1391
Ontario California aerial with San Gabriel Mountains
ONTRIO
Ontario to Rio De Janeiro
American Airlines
Nonstop·round trip
Apr 8 – Apr 15Last Chance
ITO
Hilo
Save 47%
$574
$1079
Ontario California aerial with San Gabriel Mountains
ONTITO
Ontario to Hilo
Alaska Airlines
Nonstop·round trip
Jun 1 – Jun 8
NAN
Nadi
Save 47%
$847
$1602
Ontario California aerial with San Gabriel Mountains
ONTNAN
Ontario to Nadi
American Airlines
Nonstop·round trip
Apr 7 – May 7Last Chance
Las Vegas Strip with Bellagio fountains
Save 46%
$68
$127
Ontario California aerial with San Gabriel Mountains
ONTLAS
Ontario to Las Vegas
Frontier Airlines
Nonstop·round trip
May 18 – May 22
UIO
Quito
Save 46%
$525
$969
Ontario California aerial with San Gabriel Mountains
ONTUIO
Ontario to Quito
United Airlines
Nonstop·round trip
Aug 28 – Sep 5
Las Vegas Strip with Bellagio fountains
Save 44%
$71
$126
Ontario California aerial with San Gabriel Mountains
ONTLAS
Ontario to Las Vegas
Frontier Airlines
Nonstop·round trip
Apr 14 – Apr 16
San Francisco Golden Gate Bridge
Save 44%
$89
$158
Ontario California aerial with San Gabriel Mountains
ONTSFO
Ontario to San Francisco
Frontier Airlines
Nonstop·round trip
Apr 30 – May 3
KTI
Phnom Penh (Ta Khmau)
Save 44%
$779
$1390
Ontario California aerial with San Gabriel Mountains
ONTKTI
Ontario to Phnom Penh (Ta Khmau)
United Airlines
Nonstop·round trip
Apr 7 – May 7Last Chance
CAN
Guangzhou
Save 44%
$894
$1585
Ontario California aerial with San Gabriel Mountains
ONTCAN
Ontario to Guangzhou
United Airlines
Nonstop·round trip
Apr 30 – May 8
NHA
Nha Trang
Save 43%
$1014
$1773
Ontario California aerial with San Gabriel Mountains
ONTNHA
Ontario to Nha Trang
Korean Air
Nonstop·round trip
Apr 20 – May 13
Portland skyline with Mount Hood
Save 42%
$179
$306
Ontario California aerial with San Gabriel Mountains
ONTPDX
Ontario to Portland
Alaska Airlines
Nonstop·round trip
Apr 28 – May 3
Tashkent Uzbekistan skyline
Save 41%
$919
$1551
Ontario California aerial with San Gabriel Mountains
ONTTAS
Ontario to Tashkent
Alaska Airlines
Nonstop·round trip
Sep 1 – Sep 22
Seattle skyline with Space Needle and Mount Rainier
Save 40%
$109
$183
Ontario California aerial with San Gabriel Mountains
ONTSEA
Ontario to Seattle
Frontier Airlines
Nonstop·round trip
May 2 – May 5
Amsterdam canals and houses
Save 40%
$1107
$1856
Ontario California aerial with San Gabriel Mountains
ONTAMS
Ontario to Amsterdam
Alaska Airlines
Nonstop·round trip
May 20 – Jun 7
Seattle skyline with Space Needle and Mount Rainier
Save 38%
$114
$183
Ontario California aerial with San Gabriel Mountains
ONTSEA
Ontario to Seattle
Frontier Airlines
Nonstop·round trip
May 2 – May 5
MIL
Milan
Save 38%
$481
$779
Ontario California aerial with San Gabriel Mountains
ONTMIL
Ontario to Milan
United Airlines
Nonstop·round trip
Apr 24 – May 6
New York City Manhattan skyline
Save 37%
$229
$361
Ontario California aerial with San Gabriel Mountains
ONTNYC
Ontario to New York
JetBlue Airways
Nonstop·round trip
Jun 14 – Jun 16
Belgrade waterfront at dusk
Save 37%
$1125
$1796
Ontario California aerial with San Gabriel Mountains
ONTBEG
Ontario to Belgrade
Air Serbia
Nonstop·round trip
Jul 1 – Jul 14
Salt Lake City skyline with mountains
Save 36%
$138
$217
Ontario California aerial with San Gabriel Mountains
ONTSLC
Ontario to Salt Lake City
Frontier Airlines
Nonstop·round trip
May 17 – May 26
Las Vegas Strip with Bellagio fountains
Save 35%
$62
$96
Ontario California aerial with San Gabriel Mountains
ONTLAS
Ontario to Las Vegas
Frontier Airlines
Nonstop·round trip
May 10 – Jun 1
New York City Manhattan skyline
Save 35%
$211
$311
Ontario California aerial with San Gabriel Mountains
ONTNYC
Ontario to New York
Frontier Airlines
Nonstop·round trip
Apr 23 – Apr 30
Phoenix skyline with desert mountains
Save 35%
$234
$360
Ontario California aerial with San Gabriel Mountains
ONTPHX
Ontario to Phoenix
American Airlines
Nonstop·round trip
May 30 – Jun 3
Philadelphia skyline with City Hall
Save 35%
$236
$364
Ontario California aerial with San Gabriel Mountains
ONTPHL
Ontario to Philadelphia
Frontier Airlines
Nonstop·round trip
Jun 8 – Jun 10
Warsaw Old Town and skyline
Save 35%
$764
$1176
Ontario California aerial with San Gabriel Mountains
ONTWAW
Ontario to Warsaw
United Airlines
Nonstop·round trip
May 11 – Jun 2
Phuket Thailand tropical beach
Save 35%
$931
$1425
Ontario California aerial with San Gabriel Mountains
ONTHKT
Ontario to Phuket
China Airlines
Nonstop·round trip
May 3 – May 22
CPT
Cape Town
Save 35%
$1797
$2754
Ontario California aerial with San Gabriel Mountains
ONTCPT
Ontario to Cape Town
American Airlines
Nonstop·round trip
May 5 – May 12
San Francisco Golden Gate Bridge
Save 34%
$104
$158
Ontario California aerial with San Gabriel Mountains
ONTSFO
Ontario to San Francisco
Frontier Airlines
Nonstop·round trip
May 12 – May 14
New York City Manhattan skyline
Save 34%
$207
$316
Ontario California aerial with San Gabriel Mountains
ONTNYC
Ontario to New York
Frontier Airlines
Nonstop·round trip
Apr 30 – May 5
JED
Jeddah
Save 34%
$1402
$2128
Ontario California aerial with San Gabriel Mountains
ONTJED
Ontario to Jeddah
JetBlue Airways
Nonstop·round trip
Sep 10 – Sep 30
San Jose downtown skyline
Save 33%
$135
$203
Ontario California aerial with San Gabriel Mountains
ONTSJC
Ontario to San Jose
Southwest Airlines
Nonstop·round trip
May 1 – May 3
San Jose downtown skyline
Save 33%
$136
$203
Ontario California aerial with San Gabriel Mountains
ONTSJC
Ontario to San Jose
Southwest Airlines
Nonstop·round trip
Apr 21 – Apr 23
New York City Manhattan skyline
Save 33%
$205
$308
Ontario California aerial with San Gabriel Mountains
ONTNYC
Ontario to New York
Frontier Airlines
Nonstop·round trip
Apr 28 – May 12
New York City Manhattan skyline
Save 33%
$206
$308
Ontario California aerial with San Gabriel Mountains
ONTNYC
Ontario to New York
Frontier Airlines
Nonstop·round trip
Apr 22 – Apr 24
Kansas City Union Station and skyline
Save 33%
$311
$464
Ontario California aerial with San Gabriel Mountains
ONTMKC
Ontario to Kansas City
Southwest Airlines
Nonstop·round trip
Apr 21 – May 3
Manila Philippines skyline at twilight
Save 33%
$571
$852
Ontario California aerial with San Gabriel Mountains
ONTMNL
Ontario to Manila
China Airlines
Nonstop·round trip
Oct 8 – Nov 7
Manila Philippines skyline at twilight
Save 33%
$571
$852
Ontario California aerial with San Gabriel Mountains
ONTMNL
Ontario to Manila
China Airlines
Nonstop·round trip
Oct 26 – Nov 15
VCE
Venice
Save 33%
$721
$1076
Ontario California aerial with San Gabriel Mountains
ONTVCE
Ontario to Venice
United Airlines
Nonstop·round trip
Jan 20 – Jan 29
ITO
Hilo
Save 33%
$1079
$1618
Ontario California aerial with San Gabriel Mountains
ONTITO
Ontario to Hilo
Alaska Airlines
Nonstop·round trip
Nov 24 – Nov 28
CMN
Casablanca
Save 33%
$1484
$2223
Ontario California aerial with San Gabriel Mountains
ONTCMN
Ontario to Casablanca
United Airlines
Nonstop·round trip
Jun 14 – Jul 31
MSQ
Minsk
Save 33%
$1907
$2866
Ontario California aerial with San Gabriel Mountains
ONTMSQ
Ontario to Minsk
Southwest Airlines
Nonstop·round trip
Apr 9 – Apr 30Ending Soon
Austin skyline and Congress Avenue Bridge
Save 32%
$170
$253
Ontario California aerial with San Gabriel Mountains
ONTAUS
Ontario to Austin
Frontier Airlines
Nonstop·round trip
May 7 – May 12
FCA
Kalispell
Save 32%
$370
$548
Ontario California aerial with San Gabriel Mountains
ONTFCA
Ontario to Kalispell
United Airlines
Nonstop·round trip
May 2 – May 9
View all 393 deals