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Cheap flights from Ontario to Saint Croix from $600

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Saint Croix departing on 3/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Ontario to Saint Croix

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
11:58 pm - 4:27 pm
ONT
-
STX
13h 29m
2 stops
American Airlines Logo
5:17 pm - 11:31 am
STX
-
ONT
21h 14m
2 stops
$600American Airlines
Sun, Mar 29 - Tue, Mar 31
American Airlines Logo
2:08 pm - 4:13 pm
ONT
-
STX
23h 05m
2 stops
American Airlines Logo
3:48 pm - 11:34 am
STX
-
ONT
22h 46m
2 stops
$650American Airlines
Fri, Apr 10 - Sat, Apr 18
American Airlines Logo
10:36 pm - 2:48 pm
ONT
-
STX
13h 12m
1 stop
American Airlines Logo
1:50 pm - 10:06 am
STX
-
ONT
23h 16m
2 stops
$660American Airlines
Sun, Mar 29 - Tue, Mar 31
American Airlines Logo
10:26 pm - 2:49 pm
ONT
-
STX
13h 23m
1 stop
American Airlines Logo
5:14 pm - 11:34 am
STX
-
ONT
21h 20m
2 stops
$710American Airlines
Fri, Apr 10 - Sat, Apr 18
United Airlines Logo
7:00 am - 5:15 pm
ONT
-
STX
31h 15m
2 stops
United Airlines Logo
10:20 am - 10:26 pm
STX
-
ONT
15h 06m
2 stops
$1,200United Airlines
Thu, Apr 9 - Fri, Apr 17
United Airlines Logo
11:59 pm - 12:05 pm
ONT
-
STX
33h 06m
2 stops
United Airlines Logo
10:20 am - 10:18 pm
STX
-
ONT
14h 58m
2 stops
$1,431United Airlines
Tue, Mar 10 - Tue, Mar 17
United Airlines Logo
5:10 am - 8:55 am
ONT
-
STX
24h 45m
2 stops
United Airlines Logo
10:20 am - 10:26 pm
STX
-
ONT
15h 06m
2 stops
$1,726United Airlines
Sun, Mar 29 - Tue, Mar 31
United Airlines Logo
6:05 am - 8:55 am
ONT
-
STX
23h 50m
2 stops
United Airlines Logo
8:30 am - 5:47 pm
STX
-
ONT
36h 17m
3 stops
$2,386United Airlines
Sun, Mar 29 - Tue, Mar 31
United Airlines Logo
6:37 pm - 5:15 pm
ONT
-
STX
18h 38m
3 stops
United Airlines Logo
8:30 am - 9:59 pm
STX
-
ONT
17h 29m
2 stops
$2,404United Airlines
Thu, Feb 26 - Wed, Mar 4

American Airlines flights from Ontario to Saint Croix

Our best American Airlines deals on Ontario to Saint Croix flight tickets
American Airlines
Mar 29
ONT11:58 pmOntario
13h 29m
2 stops
STX4:27 pmChristiansted Henry Rohlsen
Mar 31
STX5:17 pmChristiansted Henry Rohlsen
21h 14m
2 stops
ONT11:31 amOntario
$600
American Airlines
Apr 10
ONT2:08 pmOntario
23h 05m
2 stops
STX4:13 pmChristiansted Henry Rohlsen
Apr 18
STX3:48 pmChristiansted Henry Rohlsen
22h 46m
2 stops
ONT11:34 amOntario
$650
American Airlines
Mar 29
ONT10:36 pmOntario
13h 12m
1 stop
STX2:48 pmChristiansted Henry Rohlsen
Mar 31
STX1:50 pmChristiansted Henry Rohlsen
23h 16m
2 stops
ONT10:06 amOntario
$660

United Airlines flights from Ontario to Saint Croix

Our best United Airlines deals on Ontario to Saint Croix flight tickets
United Airlines
Apr 9
ONT7:00 amOntario
31h 15m
2 stops
STX5:15 pmChristiansted Henry Rohlsen
Apr 17
STX10:20 amChristiansted Henry Rohlsen
15h 06m
2 stops
ONT10:26 pmOntario
$1,200
United Airlines
Mar 10
ONT11:59 pmOntario
33h 06m
2 stops
STX12:05 pmChristiansted Henry Rohlsen
Mar 17
STX10:20 amChristiansted Henry Rohlsen
14h 58m
2 stops
ONT10:18 pmOntario
$1,431
United Airlines
Mar 29
ONT5:10 amOntario
24h 45m
2 stops
STX8:55 amChristiansted Henry Rohlsen
Mar 31
STX10:20 amChristiansted Henry Rohlsen
15h 06m
2 stops
ONT10:26 pmOntario
$1,726

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Saint Croix that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Ontario to Saint Croix that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioChristiansted

ONT - STX

ONTSTX

Ontario

Sun 3/29

11:58 pm-4:27 pm

2 stops13h 29m

Christiansted Henry Rohlsen

Tue 3/31

5:17 pm-11:31 am

2 stops21h 14m

$600

OntarioChristiansted

ONT - STX

ONTSTX

Ontario

Fri 4/10

2:08 pm-4:13 pm

2 stops23h 05m

Christiansted Henry Rohlsen

Sat 4/18

3:48 pm-11:34 am

2 stops22h 46m

$650

OntarioChristiansted

ONT - STX

ONTSTX

Ontario

Sun 3/29

10:36 pm-2:48 pm

1 stop13h 12m

Christiansted Henry Rohlsen

Tue 3/31

1:50 pm-10:06 am

2 stops23h 16m

$660

OntarioChristiansted

ONT - STX

ONTSTX

Ontario

Fri 4/10

10:26 pm-2:49 pm

1 stop13h 23m

Christiansted Henry Rohlsen

Sat 4/18

5:14 pm-11:34 am

2 stops21h 20m

$710

OntarioChristiansted

ONT - STX

ONTSTX

Ontario

Thu 4/9

7:00 am-5:15 pm

2 stops31h 15m

Christiansted Henry Rohlsen

Fri 4/17

10:20 am-10:26 pm

2 stops15h 06m

$1,200

OntarioChristiansted

ONT - STX

ONTSTX

Ontario

Tue 3/10

11:59 pm-12:05 pm

2 stops33h 06m

Christiansted Henry Rohlsen

Tue 3/17

10:20 am-10:18 pm

2 stops14h 58m

$1,431

OntarioChristiansted

ONT - STX

ONTSTX

Ontario

Sun 3/29

5:10 am-8:55 am

2 stops24h 45m

Christiansted Henry Rohlsen

Tue 3/31

10:20 am-10:26 pm

2 stops15h 06m

$1,726

OntarioChristiansted

ONT - STX

ONTSTX

Ontario

Sun 3/29

6:05 am-8:55 am

2 stops23h 50m

Christiansted Henry Rohlsen

Tue 3/31

8:30 am-5:47 pm

3 stops36h 17m

$2,386

OntarioChristiansted

ONT - STX

ONTSTX

Ontario

Thu 2/26

6:37 pm-5:15 pm

3 stops18h 38m

Christiansted Henry Rohlsen

Wed 3/4

8:30 am-9:59 pm

2 stops17h 29m

$2,404

OntarioChristiansted

ONT - STX

ONTSTX

Ontario

Thu 2/26

6:37 pm-5:15 pm

3 stops18h 38m

$929

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to Saint Croix from

How to get the cheapest flight ticket from Ontario to Saint Croix

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Saint Croix?

United Airlines is the most popular carrier operating from Ontario to Saint Croix

Cheap Ontario to Saint Croix flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Saint Croix

Fastest flight time

11h 38m

Direct flights

None
The fastest flight from Ontario to Saint Croix takes 11h 38m
There are no direct flights from Ontario to Saint Croix. There are no popular flight routes from Ontario to Saint Croix.
Search flight deals

  • When did momondo last update prices for flights from Ontario Airport to Saint Croix?

    Prices for flights from Ontario Airport to Saint Croix are updated daily.

  • How old do you have to be to fly from Ontario Airport to Saint Croix?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Saint Croix.

  • What documentation or ID do you need to fly to Saint Croix?

    The travel and health documents you'll need for your trip to Saint Croix may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Saint Croix. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Saint Croix?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Saint Croix. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Saint Croix with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Saint Croix from Ontario with this policy.

How can momondo help me find flights from Ontario to Saint Croix?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Saint Croix from Ontario.

I’m not ready to book a flight from Ontario to Saint Croix right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Saint Croix now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Saint Croix and let you know when they change.

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