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Niagara Falls

$101+ Cheap flights from Dulles Intl (IAD) to Niagara Falls, ON, Canada

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 12/27. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YYZ
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Niagara Falls are usually found in September or April, booked 75 days in advance, depart on a Friday or Thursday and return on a Saturday

Cheap flight deals from Dulles Intl to Niagara Falls

Keep the following information in mind while searching for Dulles Intl to Niagara Falls flight deals. Data was last updated octubre 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$223
(Booking.com)

One-way from

$101
(Mytrip)

Popular in

October

Cheapest in

September

Average price

$396
Provider with most accurate pricing for Washington, D.C. (WAS)-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Toronto (YTO) flights.
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From Washington, D.C. Dulles Intl to Niagara Falls
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One-way flight from Washington, D.C. Dulles Intl to Niagara Falls
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Highest demand for flights based on searches. 1% potential increase in price ($5 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Dulles Intl to Niagara Falls

Cheapest flights from Dulles Intl to Niagara Falls
Explore the most affordable flight options available from Dulles Intl to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 30, 2025.

This Booking.com deal was found by Cheapflights users on 10/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/134:30 pmIAD - YYZ
Nonstop1h 33mAir Canada
sáb. 12/206:55 pmYYZ - IAD
Nonstop1h 31mAir Canada
Deal found 10/29$225
This Ticket deal was found by Cheapflights users on 10/28. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/209:45 amIAD - YYZ
1 stop5h 49mAir Canada
dom. 11/239:00 amYYZ - IAD
1 stop7h 21mAir Canada
Deal found 10/28$233
This flugladen.de deal was found by Cheapflights users on 10/27. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/299:45 amIAD - YYZ
1 stop4h 55mAir Canada
sáb. 12/66:55 pmYYZ - IAD
Nonstop1h 31mAir Canada
Deal found 10/27$238
This Trip.com deal was found by Cheapflights users on 10/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/129:00 amIAD - YYZ
Nonstop1h 29mAir Canada
dom. 12/146:20 amYYZ - IAD
1 stop5h 03mAir Canada
Deal found 10/30$240
This Booking.com deal was found by Cheapflights users on 10/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/274:30 pmIAD - YYZ
Nonstop1h 33mAir Canada
sáb. 11/297:10 amYYZ - IAD
1 stop4h 29mAir Canada
Deal found 10/28$247
This United Airlines deal was found by Cheapflights users on 10/29. 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.
jue. 12/116:00 amIAD - YYZ
1 stop5h 48mUnited Airlines
jue. 12/112:45 pmYYZ - IAD
Nonstop1h 42mUnited Airlines
Deal found 10/29$250
This Booking.com deal was found by Cheapflights users on 10/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/299:00 amIAD - YYZ
Nonstop1h 29mAir Canada
vie. 12/54:10 pmYYZ - IAD
1 stop5h 12mAir Canada
Deal found 10/27$254
This United deal was found by Cheapflights users on 10/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/258:45 amIAD - YYZ
1 stop4h 58mMultiple Airlines
mar. 11/254:00 pmYYZ - IAD
1 stop4h 54mMultiple Airlines
Deal found 10/29$255

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Niagara Falls 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 octubre 30, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Niagara Falls that are best for you.

Fly from

Dulles Intl

Fly to

Niagara Falls

Route

Depart

Return

Price

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

dom. 11/23

12:35 pm-2:14 pm

Nonstop1h 39m

Toronto Pearson Intl

sáb. 1/24

2:45 pm-4:30 pm

Nonstop1h 45m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

dom. 11/23

12:35 pm-2:14 pm

Nonstop1h 39m

Toronto Pearson Intl

vie. 11/28

2:45 pm-4:27 pm

Nonstop1h 42m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

lun. 12/8

10:11 pm-11:46 pm

Nonstop1h 35m

Toronto Pearson Intl

jue. 12/11

2:45 pm-4:27 pm

Nonstop1h 42m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

lun. 12/8

10:11 pm-11:46 pm

Nonstop1h 35m

Toronto Pearson Intl

vie. 12/12

2:45 pm-4:27 pm

Nonstop1h 42m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

dom. 11/30

10:11 pm-11:46 pm

Nonstop1h 35m

Toronto Pearson Intl

mar. 12/2

7:40 pm-9:20 pm

Nonstop1h 40m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

mié. 11/26

10:11 pm-11:46 pm

Nonstop1h 35m

Toronto Pearson Intl

jue. 11/27

7:40 pm-9:20 pm

Nonstop1h 40m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

lun. 11/24

10:11 pm-11:46 pm

Nonstop1h 35m

Toronto Pearson Intl

vie. 11/28

7:40 pm-9:20 pm

Nonstop1h 40m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

dom. 12/7

10:11 pm-11:46 pm

Nonstop1h 35m

Toronto Pearson Intl

jue. 12/11

10:00 am-11:45 am

Nonstop1h 45m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

mié. 11/26

12:35 pm-2:14 pm

Nonstop1h 39m

Toronto Pearson Intl

lun. 1/19

2:45 pm-4:30 pm

Nonstop1h 45m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

sáb. 11/22

5:15 pm-6:57 pm

Nonstop1h 42m

Toronto Pearson Intl

vie. 1/23

2:45 pm-4:30 pm

Nonstop1h 45m

$264

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 22 results
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Best time to book a flight from Dulles Intl to Niagara Falls

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

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Niagara Falls

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Niagara Falls?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Niagara Falls. Price data was last updated on October 24, 2025.

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Niagara Falls may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Niagara Falls?

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Niagara Falls (average of $91). Flying from Washington, D.C. Dulles Intl Airport to Niagara Falls in August is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to NI4?

Find hourly flight availability from Dulles Intl to Niagara Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 30, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Niagara Falls at noon. If you’re flexible enough to do this you can expect to save up to 22% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Niagara Falls?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Niagara Falls. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Niagara Falls flight should consider departing on Friday at noon when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Niagara Falls?

Reviews of airlines servicing Niagara Falls

Get insights into the airlines that provide service to Niagara Falls. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Niagara Falls. Reviews last updated octubre 30, 2025.
Get a feel of what it's like to fly with Porter Airlines, United Airlines, and WestJet from Washington, D.C. Dulles Intl Airport to Niagara Falls by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
384 reviews

Comfort

8.0

Food

7.6

Entertainment

7.0

Boarding

8.2

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
8.0
Very good
384 reviews
Porter Airlines
8.0
Very good
384 reviews

Comfort

8.0

Food

7.6

Entertainment

7.0

Boarding

8.2

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,998 reviews
Porter Airlines
8.0
Very good
384 reviews

Comfort

8.0

Food

7.6

Entertainment

7.0

Boarding

8.2

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
WestJet
7.2
Good
3,149 reviews
Porter Airlines
8.0
Very good
384 reviews

Comfort

8.0

Food

7.6

Entertainment

7.0

Boarding

8.2

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,377 reviews
Porter Airlines
8.0
Very good
384 reviews

Comfort

8.0

Food

7.6

Entertainment

7.0

Boarding

8.2

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Niagara Falls. 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 Washington, D.C. Dulles Intl Airport to Niagara Falls?

    For as low as $264, United Airlines can have you in Niagara Falls from Washington, D.C. Dulles Intl Airport in 1h 39m. The distance from Washington, D.C. Dulles Intl Airport to Niagara Falls is about 346 mi. All flights are typically nonstop.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Niagara Falls?

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Niagara Falls are Republic Airways (93%), United Airlines (93%) and Air Canada (92%).

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Niagara Falls?

    Looking for the cheapest flight from Washington, D.C. Dulles Intl Airport to Niagara Falls? While on average our users pay $853, our data indicates the cheapest price to be $106. The most popular route (Washington, D.C. Dulles Intl - Toronto Pearson Intl), is priced around $241.

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

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

  • How can I find direct flights from Dulles Intl to Niagara Falls?

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

  • Can I find deals for business class flights from Dulles Intl to Niagara Falls?

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

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Niagara Falls?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Niagara Falls (average of $91). Flying from Washington, D.C. Dulles Intl Airport to Niagara Falls in August is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Dulles Intl to Niagara Falls

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Dulles Intl to Niagara Falls

Discover the top 5 airlines that operate flights from Dulles Intl to Niagara Falls. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$54Average$249FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$144Average$338FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$176Average$246FlexibilityNo cancel feeOn-time50%
United AirlinesCheapest$250Average$352FlexibilityNo cancel feeOn-time69%
WestJetCheapest$319Average$636FlexibilityNo cancel feeOn-time60%

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