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$527+ Cheap flights from Saint John (YSJ) to San Diego (SAN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — SAN
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Cheap flight deals from St John to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from St John (YSJ) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$527
(United Airlines)
Provider with most accurate pricing for Saint John-San Diego flight deals.
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Provider most trusted by Cheapflights users for Saint John-San Diego flights.
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From Saint John to San Diego
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Find flight deals from St John to San Diego

Cheapest flights from St John to San Diego
Explore the most affordable flight options available from St John to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/44:15 pmYSJ - SAN
2 stops22h 06mUnited Airlines
Thu 12/117:00 amSAN - YSJ
2 stops12h 29mUnited Airlines
Deal found 10/20$527
This Air Canada deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:40 amYSJ - SAN
1 stop10h 13mAir Canada
Thu 12/1112:40 pmSAN - YSJ
1 stop18h 19mAir Canada
Deal found 10/20$697

Cheapflights Fare Finder

 
Customize your flight search to find flights from St John to San Diego 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, Cheapflights users made 2,558,603 searches. Data last updated October 22, 2025.
Use the filters below to find and compare flights from Saint John to San Diego that are best for you.

Fly from

St John

Fly to

San Diego

Route

Depart

Return

Price

Saint JohnSan Diego

YSJ - SAN

YSJSAN

Saint John

Thu 12/4

4:15 pm-10:21 am

2 stops22h 06m

San Diego

Thu 12/11

7:00 am-11:29 pm

2 stops12h 29m

$527

Saint JohnSan Diego

YSJ - SAN

YSJSAN

Saint John

Thu 2/12

4:15 pm-9:52 am

2 stops21h 37m

San Diego

Sun 3/15

2:10 pm-3:35 pm

2 stops21h 25m

$542

Saint JohnSan Diego

YSJ - SAN

YSJSAN

Saint John

Thu 12/4

5:40 am-11:53 am

1 stop10h 13m

San Diego

Thu 12/11

12:40 pm-10:59 am

1 stop18h 19m

$697

Saint JohnSan Diego

YSJ - SAN

YSJSAN

Saint John

Thu 2/12

11:30 am-11:53 am

1 stop28h 23m

San Diego

Sun 3/15

12:40 pm-11:29 pm

1 stop30h 49m

$769

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

Compare providers for flights from St John to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St John to San Diego in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Saint John-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Saint John-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Saint John-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Saint John-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Saint John-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St John to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from St John with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from St John to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Saint John to San Diego?

    United Airlines can get you from Saint John to San Diego in just under 22h 06m. Your travel time can differ by up to . The distance between Saint John and San Diego is about 2834 mi.

  • Can I find deals for flights from St John to San Diego that include hotel bookings?

    Yes. In addition to deals on St John to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St John to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St John to San Diego.

  • Can I find deals for business class flights from St John to San Diego?

    Yes. Cheapflights offers flight deals from St John to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
Imperial Beach
National City

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