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Cheap flights from Washington, D.C. Dulles Intl Airport to Saint John from $625

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 10/10. 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

Air Canada Logo
2:25 pm - 11:51 pmIAD-YSJ
8h 26m1 stop
Air Canada Logo
5:55 am - 9:38 amYSJ-IAD
4h 43m1 stop
$625Air Canada
Find Deal
Fri, Oct 10 - Mon, Oct 13
United Airlines Logo
6:15 am - 5:40 pmIAD-YSJ
10h 25m2 stops
United Airlines Logo
5:55 am - 9:38 amYSJ-IAD
4h 43m1 stop
$700United Airlines
Find Deal
Fri, Oct 10 - Mon, Oct 13
Air Canada Logo
4:30 pm - 11:29 pmIAD-YSJ
5h 59m1 stop
Air Canada Logo
5:40 am - 3:51 pmYSJ-IAD
11h 11m1 stop
$751Air Canada
Find Deal
Sun, Oct 26 - Sun, Nov 2
United Airlines Logo
6:15 am - 5:40 pmIAD-YSJ
10h 25m2 stops
United Airlines Logo
6:40 pm - 7:32 amYSJ-IAD
13h 52m2 stops
$789United Airlines
Find Deal
Fri, Oct 10 - Mon, Oct 13
United Airlines Logo
6:00 am - 5:14 pmIAD-YSJ
10h 14m2 stops
United Airlines Logo
5:40 am - 8:26 pmYSJ-IAD
15h 46m1 stop
$847United Airlines
Find Deal
Sun, Oct 26 - Sun, Nov 2

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
Oct 10
IAD2:25 pmWashington, D.C. Dulles Intl
8h 26m
1 stop
YSJ11:51 pmSaint John
Oct 13
YSJ5:55 amSaint John
4h 43m
1 stop
IAD9:38 amWashington, D.C. Dulles Intl
$625
Find similar
Air Canada
Oct 26
IAD4:30 pmWashington, D.C. Dulles Intl
5h 59m
1 stop
YSJ11:29 pmSaint John
Nov 2
YSJ5:40 amSaint John
11h 11m
1 stop
IAD3:51 pmWashington, D.C. Dulles Intl
$751
Find similar

United Airlines flights from Washington, D.C. Dulles Intl Airport to Saint John

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Saint John flight tickets
United Airlines
Oct 10
IAD6:15 amWashington, D.C. Dulles Intl
10h 25m
2 stops
YSJ5:40 pmSaint John
Oct 13
YSJ5:55 amSaint John
4h 43m
1 stop
IAD9:38 amWashington, D.C. Dulles Intl
$700
Find similar
United Airlines
Oct 10
IAD6:15 amWashington, D.C. Dulles Intl
10h 25m
2 stops
YSJ5:40 pmSaint John
Oct 13
YSJ6:40 pmSaint John
13h 52m
2 stops
IAD7:32 amWashington, D.C. Dulles Intl
$789
Find similar
United Airlines
Oct 26
IAD6:00 amWashington, D.C. Dulles Intl
10h 14m
2 stops
YSJ5:14 pmSaint John
Nov 2
YSJ5:40 amSaint John
15h 46m
1 stop
IAD8:26 pmWashington, D.C. Dulles Intl
$847
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 September 11, 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

Fri 10/10

2:25 pm-11:51 pm

1 stop8h 26m

Saint John

Mon 10/13

5:55 am-9:38 am

1 stop4h 43m

$625

Washington, D.C.Saint John

IAD - YSJ

IADYSJ

Washington, D.C. Dulles Intl

Fri 10/10

6:15 am-5:40 pm

2 stops10h 25m

Saint John

Mon 10/13

5:55 am-9:38 am

1 stop4h 43m

$700

Washington, D.C.Saint John

IAD - YSJ

IADYSJ

Washington, D.C. Dulles Intl

Sun 10/26

4:30 pm-11:29 pm

1 stop5h 59m

Saint John

Sun 11/2

5:40 am-3:51 pm

1 stop11h 11m

$751

Washington, D.C.Saint John

IAD - YSJ

IADYSJ

Washington, D.C. Dulles Intl

Fri 10/10

6:15 am-5:40 pm

2 stops10h 25m

Saint John

Mon 10/13

6:40 pm-7:32 am

2 stops13h 52m

$789

Washington, D.C.Saint John

IAD - YSJ

IADYSJ

Washington, D.C. Dulles Intl

Sun 10/26

6:00 am-5:14 pm

2 stops10h 14m

Saint John

Sun 11/2

5:40 am-8:26 pm

1 stop15h 46m

$847

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. 5h 59m 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.

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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