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Cheap flights from Washington, D.C. Dulles Intl Airport to Saint John from $629

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Saint John departing on 3/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Saint John

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
9:55 am - 3:35 pmIAD-YSJ
4h 40m1 stop
Air Canada Logo
11:30 am - 3:38 pmYSJ-IAD
5h 08m1 stop
$629Air Canada
Find Deal
jue., mar. 26 - dom., mar. 29
Air Canada Logo
9:55 am - 3:35 pmIAD-YSJ
4h 40m1 stop
Air Canada Logo
11:45 am - 8:24 pmYSJ-IAD
9h 39m2 stops
$634Air Canada
Find Deal
jue., mar. 26 - dom., mar. 29
Air Canada Logo
9:55 am - 3:35 pmIAD-YSJ
4h 40m1 stop
Air Canada Logo
11:45 am - 8:24 pmYSJ-IAD
9h 39m2 stops
$635Air Canada
Find Deal
jue., mar. 26 - dom., mar. 29
United Airlines Logo
6:00 am - 3:35 pmIAD-YSJ
8h 35m2 stops
United Airlines Logo
5:40 am - 2:03 pmYSJ-IAD
9h 23m2 stops
$740United Airlines
Find Deal
jue., mar. 26 - dom., mar. 29

Air Canada flights from Washington, D.C. Dulles Intl Airport to Saint John

Our best Air Canada deals on Washington, D.C. Dulles Intl Airport to Saint John flight tickets
Air Canada
Mar 26
IAD9:55 amWashington, D.C. Dulles Intl
4h 40m
1 stop
YSJ3:35 pmSaint John
Mar 29
YSJ11:30 amSaint John
5h 08m
1 stop
IAD3:38 pmWashington, D.C. Dulles Intl
$629
Find similar
Air Canada
Mar 26
IAD9:55 amWashington, D.C. Dulles Intl
4h 40m
1 stop
YSJ3:35 pmSaint John
Mar 29
YSJ11:45 amSaint John
9h 39m
2 stops
IAD8:24 pmWashington, D.C. Dulles Intl
$634
Find similar
Air Canada
Mar 26
IAD9:55 amWashington, D.C. Dulles Intl
4h 40m
1 stop
YSJ3:35 pmSaint John
Mar 29
YSJ11:45 amSaint John
9h 39m
2 stops
IAD8:24 pmWashington, D.C. Dulles Intl
$635
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Saint 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, momondo users made 832,500 searches. Data last updated noviembre 6, 2025.
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

Washington, D.C.Saint John

IAD - YSJ

IADYSJ

Washington, D.C. Dulles Intl

jue. 3/26

9:55 am-3:35 pm

1 stop4h 40m

Saint John

dom. 3/29

11:30 am-3:38 pm

1 stop5h 08m

$629

Washington, D.C.Saint John

IAD - YSJ

IADYSJ

Washington, D.C. Dulles Intl

jue. 3/26

9:55 am-3:35 pm

1 stop4h 40m

Saint John

dom. 3/29

11:45 am-8:24 pm

2 stops9h 39m

$634

Washington, D.C.Saint John

IAD - YSJ

IADYSJ

Washington, D.C. Dulles Intl

jue. 3/26

9:55 am-3:35 pm

1 stop4h 40m

Saint John

dom. 3/29

11:45 am-8:24 pm

2 stops9h 39m

$635

Washington, D.C.Saint John

IAD - YSJ

IADYSJ

Washington, D.C. Dulles Intl

jue. 3/26

6:00 am-3:35 pm

2 stops8h 35m

Saint John

dom. 3/29

5:40 am-2:03 pm

2 stops9h 23m

$740

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Saint John from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Saint John

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Saint John?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Saint John is on a Saturday when prices can be found for as low as $824. On the other hand, Tuesday is the most expensive day to depart from Washington, D.C. Dulles Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,268.

What is the cheapest time of day to depart on your flight to Saint John?

Our most recent data shows that the best time of day to fly to Saint John is in the afternoon. Flights from Washington, D.C. Dulles Intl Airport to Saint John during this time can be as low as $819. Try not to purchase tickets in the morning because they tend to be around $885. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from Washington, D.C. Dulles Intl Airport to Saint John

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Saint John according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Saint John (IAD to YSJ) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Saint John

Direct flights

None
There are no direct flights from Washington, D.C. Dulles Intl Airport to Saint John. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Saint John.
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  • How far is Washington, D.C. Dulles Intl to Saint John by plane?

    A flight from Washington, D.C. Dulles Intl to Saint John will travel around 727.2 mi. 4h 40m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Saint John Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Saint John Airport were last updated today.

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Saint John Airport?

    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 Washington, D.C. Dulles Intl Airport to Saint John Airport.

  • What documentation or ID do you need to fly to Saint John Airport?

    The travel and health documents required for your trip to Saint John Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Saint John Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Saint John?

Book flights to Saint John if you plan to visit one of these locations
Bridgetown

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Saint John?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Saint John. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington, D.C. to Saint John with flexible booking policies on momondo?

Yes. All flights to Saint John from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington, D.C. to Saint John?

Once all potential Washington, D.C. to Saint John flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington, D.C. to Saint John right now. Can momondo alert me if prices change?

Price alerts on flights to Saint John from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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