$447+ Cheap flights from Saint John (YSJ) to Denver (DEN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — DEN
Mar 5 — Mar 121
1 adult, Economy
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Find cheap flights from St John to Denver with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St John to Denver
Cheapest
Best
One-way
Cheapest flights from St John to DenverExplore 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 February 3, 2026.
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 February 3, 2026.
This Air Canada deal was found by Cheapflights users on 2/2. 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.
Mon 4/135:35 am
YSJ
- DEN
1 stop7h 43m
Air Canada
Fri 4/176:05 pm
DEN
- YSJ
2 stops14h 05m
Air Canada
Deal found 2/2![Air Canada logo]()
$633
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1311:55 am
YSJ
- DEN
2 stops13h 10m
United Airlines
Fri 4/176:00 am
DEN
- YSJ
2 stops14h 52m
United Airlines
Deal found 2/1![United Airlines logo]()
$838
Best flights from St John to DenverDiscover carefully curated flight deals from St John to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
Discover carefully curated flight deals from St John to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
This Air Canada deal was found by Cheapflights users on 2/2. 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.
Mon 4/135:35 am
YSJ
- DEN
1 stop7h 43m
Air Canada
Fri 4/176:05 pm
DEN
- YSJ
2 stops14h 05m
Air Canada
Deal found 2/2![Air Canada logo]()
$633
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1311:55 am
YSJ
- DEN
2 stops13h 10m
United Airlines
Fri 4/176:00 am
DEN
- YSJ
2 stops14h 52m
United Airlines
Deal found 2/1![United Airlines logo]()
$838
One-way flights from St John to DenverSearch for one-way flight options from St John to Denver. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
Search for one-way flight options from St John to Denver. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Air Canada deal was found by Cheapflights users on 2/2. 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.
Thu 3/195:40 am
YSJ
- DEN
1 stop7h 43m
Air Canada
Deal found 2/2![Air Canada logo]()
$447
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 February 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $633 (Air Canada) |
One-way from | $447 (Air Canada) |
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 February 3, 2026.
Use the filters below to find and compare flights from Saint John to Denver that are best for you.
Fly from
St John
Fly to
Denver
Route
Depart
Return
Price
Saint JohnDenver
YSJ - DEN
YSJDEN
Saint John
Mon 4/13
5:35 am-10:18 am
1 stop7h 43m
Denver Intl
Fri 4/17
6:05 pm-11:10 am
2 stops14h 05m
$633
Saint JohnDenver
YSJ - DEN
YSJDEN
Saint John
Mon 4/13
11:55 am-10:05 pm
2 stops13h 10m
Denver Intl
Fri 4/17
6:00 am-11:52 pm
2 stops14h 52m
$838
Saint JohnDenver
YSJ - DEN
YSJDEN
Saint John
Thu 3/19
5:40 am-10:23 am
1 stop7h 43m
$447
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 February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
YSJ-DEN
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.
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