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St John

$630+ Cheap flights from Dulles Intl (IAD) to Saint John (YSJ)

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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YSJ
Aug 25 — Sep 11
Tue 8/25
Tue 9/1
1 adult, Economy
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Cheap flight deals from Dulles Intl to St John

Cheapest flights from Dulles Intl to St John
Explore the most affordable flight options available from Dulles Intl to St John. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 26, 2026.

This Air Canada deal was found by Cheapflights users on 7/22. 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.
Tue 10/204:00 pm
IAD
-
YSJ
1 stop6h 51m
Air Canada
Wed 10/2112:50 pm
YSJ
-
IAD
2 stops9h 24m
Air Canada
Deal found 7/22$630
This Air Canada deal was found by Cheapflights users on 7/22. 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 8/2310:19 pm
IAD
-
YSJ
1 stop12h 31m
Air Canada
Thu 9/35:00 am
YSJ
-
IAD
1 stop7h 21m
Air Canada
Deal found 7/22$670
This Air Canada deal was found by Cheapflights users on 7/25. 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.
Sat 10/174:00 pm
IAD
-
YSJ
1 stop6h 51m
Air Canada
Wed 10/215:40 am
YSJ
-
IAD
2 stops9h 19m
Air Canada
Deal found 7/25$693

Find flight deals from Dulles Intl to St John

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to St John (YSJ). 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 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$630
(Air Canada)
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Saint John flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Saint John flights.
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From Washington, D.C. Dulles Intl to Saint John
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to St John 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 26, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Saint John that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.Saint John

IAD - YSJ

IADYSJ

Washington, D.C. Dulles Intl

Tue 10/20

4:00 pm-11:51 pm

1 stop6h 51m

Saint John

Wed 10/21

12:50 pm-9:14 pm

2 stops9h 24m

$630

Washington, D.C.Saint John

IAD - YSJ

IADYSJ

Washington, D.C. Dulles Intl

Sat 8/8

9:55 am-12:55 am

1 stop14h 00m

Saint John

Mon 8/17

5:00 am-3:01 pm

2 stops11h 01m

$816

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Saint John flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Saint John flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Saint John flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Saint John 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 Washington, D.C. Dulles Intl Airport-Saint John 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 Dulles Intl to St John

Have a flexible travel schedule? Discover the best time to fly to St John from Dulles Intl 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 Dulles Intl to St John. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Saint John from Washington, D.C. Dulles Intl?

    Located just 9.4 mi from the city center, Saint John is the airport most travelers will use when flying to Saint John from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Saint John (YSJ) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 0 different airlines.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Saint John?

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Saint John in 6h 51m. Fly via Air Canada to get the fastest option. The distance from Washington, D.C. Dulles Intl Airport to Saint John is about 736 mi.

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

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

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

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

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

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

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