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Cheap flights from Ontario to Saint Croix from $499

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Saint Croix departing on 8/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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
12:59 pm - 3:04 pmONT  Ontario-STX Christiansted Henry Rohlsen
23h 05m2 stops Phoenix Sky Harbor Intl Miami
American Airlines Logo
8:30 am - 10:59 pmSTX  Christiansted Henry Rohlsen-ONT Ontario
17h 29m2 stops Miami Dallas/Fort Worth
$760American Airlines
Thu, Aug 20 - Mon, Aug 24
American Airlines Logo
6:15 am - 8:43 pmONT  Ontario-STX Christiansted Henry Rohlsen
11h 28m2 stops Phoenix Sky Harbor Intl Miami
American Airlines Logo
8:30 am - 10:59 pmSTX  Christiansted Henry Rohlsen-ONT Ontario
17h 29m3 stops Miami Orlando Dallas/Fort Worth
$1,064American Airlines
Thu, Aug 20 - Mon, Aug 24
Multiple Airlines Logo
5:00 am - 7:38 pmONT  Ontario-STX Christiansted Henry Rohlsen
11h 38m2 stops Denver Intl San Juan Luis Munoz Marin Intl
Multiple Airlines Logo
10:25 am - 8:58 pmSTX  Christiansted Henry Rohlsen-ONT Ontario
13h 33m2 stops San Juan Luis Munoz Marin Intl Denver Intl
$1,451Multiple Airlines
Tue, Oct 13 - Sun, Oct 18
Multiple Airlines Logo
6:37 pm - 2:20 pmONT  Ontario-STX Christiansted Henry Rohlsen
15h 43m2 stops San Francisco Newark
Multiple Airlines Logo
9:10 am - 8:51 pmSTX  Christiansted Henry Rohlsen-ONT Ontario
15h 41m2 stops San Juan Luis Munoz Marin Intl Denver Intl
$1,468Multiple Airlines
Fri, Nov 6 - Tue, Nov 10
United Airlines Logo
6:45 am - 7:38 pmONT  Ontario-STX Christiansted Henry Rohlsen
32h 53m2 stops Chicago O'Hare Intl San Juan Luis Munoz Marin Intl
United Airlines Logo
3:14 pm - 6:44 pmSTX  Christiansted Henry Rohlsen-ONT Ontario
31h 30m2 stops San Juan Luis Munoz Marin Intl Chicago O'Hare Intl
$1,664United Airlines
Sun, Jan 17 - Wed, Jan 27
United Airlines Logo
7:00 am - 12:30 pmONT  Ontario-STX Christiansted Henry Rohlsen
25h 30m2 stops Chicago O'Hare Intl San Juan Luis Munoz Marin Intl
United Airlines Logo
3:14 pm - 6:47 pmSTX  Christiansted Henry Rohlsen-ONT Ontario
31h 33m2 stops San Juan Luis Munoz Marin Intl Chicago O'Hare Intl
$1,933United Airlines
Sat, Nov 7 - Fri, Nov 13
United Airlines Logo
5:00 am - 12:30 pmONT  Ontario-STX Christiansted Henry Rohlsen
28h 30m2 stops Denver Intl San Juan Luis Munoz Marin Intl
United Airlines Logo
10:25 am - 9:40 pmSTX  Christiansted Henry Rohlsen-ONT Ontario
15h 15m2 stops San Juan Luis Munoz Marin Intl Houston George Bush Intcntl
$1,954United Airlines
Wed, Oct 21 - Mon, Nov 2
United Airlines Logo
7:00 am - 12:30 pmONT  Ontario-STX Christiansted Henry Rohlsen
25h 30m2 stops Chicago O'Hare Intl San Juan Luis Munoz Marin Intl
United Airlines Logo
3:25 pm - 8:51 pmSTX  Christiansted Henry Rohlsen-ONT Ontario
33h 26m2 stops Newark Denver Intl
$2,143United Airlines
Sat, Nov 21 - Sat, Nov 28

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American Airlines flights from Ontario to Saint Croix

Our best American Airlines deals on Ontario to Saint Croix flight tickets
American Airlines
Aug 20
ONT12:59 pmOntario
23h 05m
2 stops
STX3:04 pmChristiansted Henry Rohlsen
Aug 24
STX8:30 amChristiansted Henry Rohlsen
17h 29m
2 stops
ONT10:59 pmOntario
$760
American Airlines
Aug 20
ONT6:15 amOntario
11h 28m
2 stops
STX8:43 pmChristiansted Henry Rohlsen
Aug 24
STX8:30 amChristiansted Henry Rohlsen
17h 29m
3 stops
ONT10:59 pmOntario
$1,064

United Airlines flights from Ontario to Saint Croix

Our best United Airlines deals on Ontario to Saint Croix flight tickets
United Airlines
Jan 17
ONT6:45 amOntario
32h 53m
2 stops
STX7:38 pmChristiansted Henry Rohlsen
Jan 27
STX3:14 pmChristiansted Henry Rohlsen
31h 30m
2 stops
ONT6:44 pmOntario
$1,664
United Airlines
Nov 7
ONT7:00 amOntario
25h 30m
2 stops
STX12:30 pmChristiansted Henry Rohlsen
Nov 13
STX3:14 pmChristiansted Henry Rohlsen
31h 33m
2 stops
ONT6:47 pmOntario
$1,933
United Airlines
Oct 21
ONT5:00 amOntario
28h 30m
2 stops
STX12:30 pmChristiansted Henry Rohlsen
Nov 2
STX10:25 amChristiansted Henry Rohlsen
15h 15m
2 stops
ONT9:40 pmOntario
$1,954

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 August 7, 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

Cheapest round-trip

OntarioChristiansted

ONT Ontario - STX Christiansted Henry Rohlsen

ONTSTX

Ontario

Thu 8/20

12:59 pm-3:04 pm

2 stops23h 05m

Christiansted Henry Rohlsen

Mon 8/24

8:30 am-10:59 pm

2 stops17h 29m

$760

OntarioChristiansted

ONT Ontario - STX Christiansted Henry Rohlsen

ONTSTX

Ontario

Thu 8/20

6:15 am-8:43 pm

2 stops11h 28m

Christiansted Henry Rohlsen

Mon 8/24

8:30 am-10:59 pm

3 stops17h 29m

$1,064
Quickest round-trip

OntarioChristiansted

ONT Ontario - STX Christiansted Henry Rohlsen

ONTSTX

Ontario

Tue 10/13

5:00 am-7:38 pm

2 stops11h 38m

Christiansted Henry Rohlsen

Sun 10/18

10:25 am-8:58 pm

2 stops13h 33m

$1,451

OntarioChristiansted

ONT Ontario - STX Christiansted Henry Rohlsen

ONTSTX

Ontario

Fri 11/6

6:37 pm-2:20 pm

2 stops15h 43m

Christiansted Henry Rohlsen

Tue 11/10

9:10 am-8:51 pm

2 stops15h 41m

$1,468

OntarioChristiansted

ONT Ontario - STX Christiansted Henry Rohlsen

ONTSTX

Ontario

Sun 1/17

6:45 am-7:38 pm

2 stops32h 53m

Christiansted Henry Rohlsen

Wed 1/27

3:14 pm-6:44 pm

2 stops31h 30m

$1,664

OntarioChristiansted

ONT Ontario - STX Christiansted Henry Rohlsen

ONTSTX

Ontario

Sat 11/7

7:00 am-12:30 pm

2 stops25h 30m

Christiansted Henry Rohlsen

Fri 11/13

3:14 pm-6:47 pm

2 stops31h 33m

$1,933

OntarioChristiansted

ONT Ontario - STX Christiansted Henry Rohlsen

ONTSTX

Ontario

Wed 10/21

5:00 am-12:30 pm

2 stops28h 30m

Christiansted Henry Rohlsen

Mon 11/2

10:25 am-9:40 pm

2 stops15h 15m

$1,954

OntarioChristiansted

ONT Ontario - STX Christiansted Henry Rohlsen

ONTSTX

Ontario

Sat 11/21

7:00 am-12:30 pm

2 stops25h 30m

Christiansted Henry Rohlsen

Sat 11/28

3:25 pm-8:51 pm

2 stops33h 26m

$2,143
Cheapest one-way
Quickest one-way

OntarioChristiansted

ONT Ontario - STX Christiansted Henry Rohlsen

ONTSTX

Ontario

Mon 8/17

6:00 am-8:20 am

2 stops23h 20m

$499

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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.
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Frequently asked questions about flying from Ontario to Saint Croix

  • 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.

Frequently asked questions about flying from Ontario to Saint Croix

  • How do I get Price Alerts for flights from Ontario to Saint Croix?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Ontario from Saint Croix. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Ontario to Saint Croix with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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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