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Flight Deals from London Heathrow Airport to Ontario International Airport from $558

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Stops

Up to 1 stop
$572
Up to 2 stops
$558

Airlines

American Airlines
$572
British Airways
$589
Delta Air Lines
$558
Finnair
$595
IBERIA
$593
KLM
$589
Lufthansa
$598
United Airlines
$572
Virgin Atlantic
$576

Cabin Class

Economy
$558

Departure Airports

London Heathrow Airport
$558

Arrival Airports

Ontario International Airport
$558

Layover Airports

Amsterdam Airport Schiphol
$558
Charlotte Douglas International Airport
$596
Chicago O Hare Airport
$576
Dallas Fort Worth International Airport
$572
Detroit Metropolitan Airport
$563
General Edward Lawrence Logan International Airport
$581
George Bush Intercontinental Houston Airport
$598
Harry Reid International Airport
$582
Hartsfield Jackson Atlanta International Airport
$576
Helsinki Vantaa Airport
$595
Minneapolis-St Paul International/Wold-Chamberlain Airport
$597
Montreal Trudeau Airport
$572
New York John F Kennedy Airport
$581
Paris Charles de Gaulle Airport
$563
Philadelphia International Airport
$594
Phoenix Sky Harbor International Airport
$572
Salt Lake City International Airport
$558
San Francisco International Airport
$572
Seattle Tacoma International Airport
$558
Zürich Airport
$598

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On average save $240 per traveler
Delta Air Lines Logo
Delta Air Lines

05/07/25

11:45am
LHR
11h 57m
AMS
SLC
Delta Air Lines Logo
Delta Air Lines

05/20/25

4:05pm
ONT
22h 10m
SEA
$558
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/02/25

6:15am
LHR
16h 28m
CDG
SEA
Delta Air Lines Logo
Delta Air Lines

05/12/25

9:45am
ONT
24h 5m
SLC
$563
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/03/25

6:15am
LHR
10h 18m
CDG
SLC
Delta Air Lines Logo
Delta Air Lines

05/07/25

12:21pm
ONT
20h 34m
DTW
$563
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/06/25

6:15am
LHR
10h 18m
CDG
SLC
Delta Air Lines Logo
Delta Air Lines

05/16/25

2:55pm
ONT
23h 20m
SEA
$563
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/14/25

11:45am
LHR
11h 57m
AMS
SLC
Delta Air Lines Logo
Delta Air Lines

05/21/25

6:55pm
ONT
43h 20m
SEA
$564
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/13/25

6:15am
LHR
10h 2m
CDG
SLC
Delta Air Lines Logo
Delta Air Lines

05/21/25

12:21pm
ONT
20h 34m
DTW
$564
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/15/25

11:15am
LHR
7h 8m
PHX
American Airlines Logo
American Airlines

05/21/25

9:30pm
ONT
18h 35m
Direct
$572
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/14/25

8:20am
LHR
15h 23m
DFW
American Airlines Logo
American Airlines

05/22/25

9:30pm
ONT
18h 35m
Direct
$572
Free cancellation within 83 hours of booking
United Airlines Logo
United Airlines

05/02/25

10:35am
LHR
9h 59m
SFO
United Airlines Logo
United Airlines

05/10/25

10:20pm
ONT
32h 10m
YUL
$572
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/10/25

11:15am
LHR
7h 8m
PHX
American Airlines Logo
American Airlines

05/15/25

8:05pm
ONT
18h 30m
Direct
$572
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/16/25

4:25pm
LHR
7h 18m
DFW
American Airlines Logo
American Airlines

05/21/25

9:30pm
ONT
18h 35m
Direct
$572
Free cancellation within 83 hours of booking
Virgin Atlantic Logo
Virgin Atlantic

04/19/25

10:55am
LHR
5h 38m
SLC
Virgin Atlantic Logo
Virgin Atlantic

05/03/25

7:00am
ONT
28h 10m
ATL
$576
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

04/29/25

3:40pm
LHR
6h 18m
PHX
American Airlines Logo
American Airlines

05/08/25

1:30pm
ONT
21h 30m
ORD
$576
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/08/25

4:25pm
LHR
7h 18m
DFW
American Airlines Logo
American Airlines

05/12/25

11:16am
ONT
24h 59m
ORD
$577
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

04/23/25

3:40pm
LHR
6h 18m
PHX
American Airlines Logo
American Airlines

04/30/25

11:59pm
ONT
32h 11m
DFW
JFK
$581
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/03/25

8:20am
LHR
7h 47m
DFW
American Airlines Logo
American Airlines

05/10/25

7:25pm
ONT
23h 30m
PHX
BOS
$581
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

04/21/25

11:15am
LHR
7h 5m
PHX
American Airlines Logo
American Airlines

04/30/25

11:59pm
ONT
32h 11m
DFW
JFK
$581
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/04/25

3:40pm
LHR
6h 18m
PHX
American Airlines Logo
American Airlines

05/21/25

5:00pm
ONT
40h 20m
LAS
$582
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/05/25

11:15am
LHR
7h 8m
PHX
American Airlines Logo
American Airlines

05/18/25

10:27pm
ONT
33h 23m
BOS
$583
Free cancellation within 83 hours of booking
British Airways Logo
British Airways

05/11/25

3:40pm
LHR
6h 17m
PHX
British Airways Logo
British Airways

05/21/25

9:30pm
ONT
18h 35m
Direct
$589
Free cancellation within 83 hours of booking
KLM Logo
KLM

05/03/25

6:15am
LHR
10h 18m
CDG
SLC
KLM Logo
KLM

05/09/25

2:23pm
ONT
23h 7m
ATL
$589
Free cancellation within 83 hours of booking
IBERIA Logo
IBERIA

05/03/25

3:40pm
LHR
6h 18m
PHX
IBERIA Logo
IBERIA

05/10/25

2:44pm
ONT
23h 41m
DFW
$593
Free cancellation within 83 hours of booking
British Airways Logo
British Airways

04/23/25

3:40pm
LHR
6h 18m
PHX
British Airways Logo
British Airways

05/03/25

11:33am
ONT
21h 32m
ORD
$593
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/16/25

3:40pm
LHR
6h 17m
PHX
American Airlines Logo
American Airlines

05/23/25

12:55am
ONT
29h 45m
PHL
$594
Free cancellation within 83 hours of booking
American Airlines Logo
American Airlines

05/13/25

4:25pm
LHR
7h 18m
DFW
American Airlines Logo
American Airlines

05/21/25

12:20pm
ONT
22h 55m
LAS
$594
Free cancellation within 83 hours of booking
Finnair Logo
Finnair

05/16/25

4:25pm
LHR
7h 18m
DFW
Finnair Logo
Finnair

05/19/25

6:45pm
ONT
22h 20m
HEL
$595
Free cancellation within 83 hours of booking
Finnair Logo
Finnair

04/27/25

9:15am
LHR
11h 44m
CLT
Finnair Logo
Finnair

05/15/25

6:45pm
ONT
22h 20m
HEL
$596
Free cancellation within 83 hours of booking
Delta Air Lines Logo
Delta Air Lines

05/03/25

6:15am
LHR
10h 18m
CDG
SLC
Delta Air Lines Logo
Delta Air Lines

05/23/25

12:50am
ONT
31h 20m
MSP
AMS
$597
Free cancellation within 83 hours of booking
IBERIA Logo
IBERIA

05/03/25

9:15am
LHR
9h 5m
ORD
PHX
IBERIA Logo
IBERIA

05/10/25

12:41pm
ONT
22h 9m
DFW
$598
Free cancellation within 83 hours of booking
Lufthansa Logo
Lufthansa

04/19/25

1:40pm
LHR
8h 18m
IAH
Lufthansa Logo
Lufthansa

05/07/25

7:35pm
ONT
22h 15m
ZRH
$598
Free cancellation within 83 hours of booking

Top Deals on flights from London Heathrow Airport to Ontario International Airport

London, GB (LON) - Los Angeles, US (LAX)

JetBlue Logo
JetBlue

May 7

11:55am
LHR
9h 16m
JFK

as low as

$764

London, GB (LON) - Los Angeles, US (LAX)

WestJet Logo
WestJet

Jul 4

2:10pm
LHR
8h 36m
YYC
SEA

as low as

$828

London, GB (LON) - Los Angeles, US (LAX)

Delta Air Lines Logo
Delta Air Lines

Sep 10

6:15am
LHR
11h 2m
CDG
SEA

as low as

$840

London, GB (LON) - Los Angeles, US (LAX)

American Airlines Logo
American Airlines

Sep 2

3:40pm
LHR
5h 55m
PHX

as low as

$852

London, GB (LON) - Los Angeles, US (LAX)

Delta Air Lines Logo
Delta Air Lines

Aug 26

10:55am
LHR
5h 22m
SLC

as low as

$852

London, GB (LON) - Los Angeles, US (LAX)

American Airlines Logo
American Airlines

Sep 15

4:25pm
LHR
7h 11m
DFW

as low as

$852

London, GB (LON) - Los Angeles, US (LAX)

Delta Air Lines Logo
Delta Air Lines

Aug 28

6:30am
LHR
16h 11m
AMS
SEA

as low as

$889

London, GB (LON) - Los Angeles, US (LAX)

American Airlines Logo
American Airlines

Aug 28

9:15am
LHR
8h 33m
CLT
PHX

as low as

$911

London, GB (LON) - Los Angeles, US (LAX)

IBERIA Logo
IBERIA

Aug 28

1:35pm
LHR
8h
DEN
PHX

as low as

$918

London, GB (LON) - Los Angeles, US (LAX)

Virgin Atlantic Logo
Virgin Atlantic

Aug 28

6:30am
LHR
16h 11m
AMS
SEA

as low as

$960

London, GB (LON) - Los Angeles, US (LAX)

Aer Lingus Logo
Aer Lingus

May 17

9:10pm
LHR
37h 47m
DUB
SEA

as low as

$988

London, GB (LON) - Los Angeles, US (LAX)

British Airways Logo
British Airways

Sep 13

3:40pm
LHR
6h
PHX

as low as

$1023
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