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$647+ Cheap flights from Saint John (YSJ) to Denver (DEN)

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 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — DEN
Aug 1 — Aug 81
Sat 8/1
Sat 8/8
1 adult, Economy
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Cheap flight deals from St John to Denver

Cheapest flights from St John to Denver
Explore the most affordable flight options available from St John to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2026.

This Air Canada deal was found by Cheapflights users on 6/30. 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.
Mon 11/235:15 am
YSJ
-
DEN
1 stop8h 15m
Air Canada
Thu 11/261:30 pm
DEN
-
YSJ
1 stop6h 54m
Air Canada
Deal found 6/30$647
This Air Canada deal was found by Cheapflights users on 7/2. 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.
Sun 9/275:00 am
YSJ
-
DEN
1 stop8h 22m
Air Canada
Fri 10/26:05 pm
DEN
-
YSJ
1 stop14h 51m
Air Canada
Deal found 7/2$683
This United Airlines deal was found by Cheapflights users on 6/30. 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.
Sun 9/275:00 am
YSJ
-
DEN
1 stop8h 22m
United Airlines
Fri 10/26:10 pm
DEN
-
YSJ
2 stops18h 49m
United Airlines
Deal found 6/30$702
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Mon 9/284:40 pm
YSJ
-
DEN
2 stops17h 59m
United Airlines
Fri 10/28:29 pm
DEN
-
YSJ
2 stops16h 30m
United Airlines
Deal found 6/28$704
This United Airlines deal was found by Cheapflights users on 6/30. 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.
Mon 11/2311:05 am
YSJ
-
DEN
2 stops11h 28m
United Airlines
Thu 11/267:45 am
DEN
-
YSJ
2 stops12h 39m
United Airlines
Deal found 6/30$707
This Air Canada deal was found by Cheapflights users on 7/1. 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.
Wed 8/55:00 am
YSJ
-
DEN
1 stop8h 35m
Air Canada
Sun 8/96:05 pm
DEN
-
YSJ
1 stop27h 50m
Air Canada
Deal found 7/1$714

Find flight deals from St John to Denver

Discover tips and strategies to find the most affordable flight options for your journey from St John (YSJ) to Denver (DEN). 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 July 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$647
(Air Canada)
Provider with most accurate pricing for Saint John-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Saint John-Denver Intl flights.
Search Deals
From Saint John to Denver Intl
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St John to Denver 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 July 2, 2026.
Use the filters below to find and compare flights from Saint John to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Saint JohnDenver

YSJ - DEN

YSJDEN

Saint John

Sun 9/27

5:00 am-10:22 am

1 stop8h 22m

Denver Intl

Fri 10/2

6:05 pm-11:56 am

1 stop14h 51m

$683
Quickest round-trip

Saint JohnDenver

YSJ - DEN

YSJDEN

Saint John

Mon 9/28

5:00 am-10:22 am

1 stop8h 22m

Denver Intl

Fri 10/2

11:35 am-11:51 pm

1 stop9h 16m

$684

Saint JohnDenver

YSJ - DEN

YSJDEN

Saint John

Mon 11/23

11:05 am-10:26 am

2 stops26h 21m

Denver Intl

Thu 11/26

1:30 pm-11:24 pm

1 stop6h 54m

$687

Saint JohnDenver

YSJ - DEN

YSJDEN

Saint John

Mon 9/28

5:00 am-10:22 am

1 stop8h 22m

Denver Intl

Fri 10/2

6:10 pm-3:59 pm

2 stops18h 49m

$703

Saint JohnDenver

YSJ - DEN

YSJDEN

Saint John

Mon 11/23

11:05 am-7:33 pm

2 stops11h 28m

Denver Intl

Thu 11/26

7:45 am-11:24 pm

2 stops12h 39m

$707

Saint JohnDenver

YSJ - DEN

YSJDEN

Saint John

Sat 8/1

4:40 pm-6:55 pm

1 stop29h 15m

Denver Intl

Sat 8/8

6:05 pm-12:55 am

1 stop27h 50m

$749

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Sorted by cheapest first

Compare providers for flights from St John to Denver

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 Denver in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 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-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Saint John-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Saint John-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Saint John-Denver 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-Denver 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 Denver

Have a flexible travel schedule? Discover the best time to fly to Denver 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 Denver. 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 Denver?

    Departing from Saint John to Denver will take you 8h 22m. The distance from Saint John to Denver is about 1987 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St John to Denver 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 Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Westminster
Centennial
Lakewood
Broomfield
Golden
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Fort Morgan
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Glendale
Evergreen

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Alternative routes for St John to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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