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Niagara Falls

$102+ 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YYZ
Jan 29 — Feb 51
Thu 1/29
Thu 2/5
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 Friday

Cheap 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 December 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:58 pmIAD - YYZ
2 stops22h 05mMultiple Airlines
Sun 1/117:10 amYYZ - IAD
1 stop24h 30mMultiple Airlines
Deal found 12/28$435
This Kiwi.com deal was found by Cheapflights users on 12/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:58 pmIAD - YYZ
2 stops22h 05mMultiple Airlines
Thu 1/87:10 amYYZ - IAD
1 stop24h 45mMultiple Airlines
Deal found 12/27$486
This Kiwi.com deal was found by Cheapflights users on 12/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:05 amIAD - YYZ
2 stops17h 15mMultiple Airlines
Thu 1/87:10 amYYZ - IAD
1 stop24h 45mMultiple Airlines
Deal found 12/27$549
This Kiwi.com deal was found by Cheapflights users on 12/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:58 pmIAD - YYZ
2 stops22h 05mMultiple Airlines
Wed 1/72:15 pmYYZ - IAD
1 stop24h 11mMultiple Airlines
Deal found 12/27$565
This Kiwi.com deal was found by Cheapflights users on 12/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:10 amIAD - YYZ
2 stops25h 33mMultiple Airlines
Sat 1/105:15 pmYYZ - IAD
1 stop14h 25mMultiple Airlines
Deal found 12/27$575
This Delta deal was found by Cheapflights users on 12/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:55 pmIAD - YYZ
1 stop24h 24mDelta
Wed 1/75:15 pmYYZ - IAD
1 stop5h 51mDelta
Deal found 12/27$603
This Air Canada deal was found by Cheapflights users on 12/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:16 pmIAD - YYZ
Nonstop1h 41mAir Canada
Sat 1/106:55 pmYYZ - IAD
Nonstop1h 31mAir Canada
Deal found 12/27$637
This Kiwi.com deal was found by Cheapflights users on 12/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:00 amIAD - YYZ
1 stop5h 19mMultiple Airlines
Thu 1/87:10 amYYZ - IAD
1 stop24h 45mMultiple Airlines
Deal found 12/27$649

Find 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 December 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$213
(Booking.com)

One-way from

$102
(Air Canada)

Popular in

October

Cheapest in

September

Average price

$368
Provider with most accurate pricing for Washington, D.C. (WAS)-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Toronto (YTO) flights.
Search Deals
From Washington, D.C. Dulles Intl to Niagara Falls
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Niagara Falls
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($4 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 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

Sat 2/21

4:30 pm-5:58 pm

Nonstop1h 28m

Toronto Pearson Intl

Sun 2/22

2:15 pm-3:49 pm

Nonstop1h 34m

$214

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Wed 2/18

4:30 pm-5:58 pm

Nonstop1h 28m

Toronto Pearson Intl

Fri 2/20

2:15 pm-3:49 pm

Nonstop1h 34m

$228

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sun 1/18

9:00 am-10:29 am

Nonstop1h 29m

Toronto Pearson Intl

Sat 1/24

4:00 pm-8:54 pm

1 stop4h 54m

$237

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sat 1/17

9:00 am-10:29 am

Nonstop1h 29m

Toronto Pearson Intl

Mon 1/19

4:10 pm-9:25 pm

1 stop5h 15m

$242

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Thu 2/19

6:00 am-11:18 am

1 stop5h 18m

Toronto Pearson Intl

Sun 2/22

7:45 am-11:53 am

1 stop4h 08m

$253

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Tue 2/17

12:24 pm-5:18 pm

1 stop4h 54m

Toronto Pearson Intl

Thu 2/19

7:45 am-11:53 am

1 stop4h 08m

$253

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sat 1/24

12:29 pm-7:08 pm

1 stop6h 39m

Toronto Pearson Intl

Mon 1/26

6:00 am-11:43 am

1 stop5h 43m

$253

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Thu 2/12

6:00 am-11:18 am

1 stop5h 18m

Toronto Pearson Intl

Sun 2/15

7:45 am-11:53 am

1 stop4h 08m

$253

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Mon 2/2

6:00 am-11:20 am

1 stop5h 20m

Toronto Pearson Intl

Wed 2/4

12:12 pm-4:46 pm

1 stop4h 34m

$253

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sat 3/7

5:13 pm-10:40 pm

1 stop5h 27m

Toronto Pearson Intl

Wed 3/11

10:05 am-4:37 pm

1 stop6h 32m

$253

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

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 December 26, 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 $94). 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 December 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 38% 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 27, 2025.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Niagara Falls flight should consider departing on Sunday mornings 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.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Niagara Falls

Explore weekly flight availability from Dulles Intl to Niagara Falls. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 30, 2025.

The most flights from IAD to NI4 are scheduled on a Monday (16 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (16 on average).

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 December 30, 2025.
Get a feel of what it's like to fly with Porter Airlines, United Airlines, and Air Canada 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
402 reviews

Crew

8.6

Overall

8.0

Food

7.6

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
8.0
Very good
402 reviews
Porter Airlines
8.0
Very good
402 reviews

Crew

8.6

Overall

8.0

Food

7.6

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
United Airlines
7.4
Good
9,125 reviews
Porter Airlines
8.0
Very good
402 reviews

Crew

8.6

Overall

8.0

Food

7.6

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,566 reviews
Porter Airlines
8.0
Very good
402 reviews

Crew

8.6

Overall

8.0

Food

7.6

Boarding

8.2

Comfort

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

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 $214, Air Canada can have you in Niagara Falls from Washington, D.C. Dulles Intl Airport in 1h 28m. The distance from Washington, D.C. Dulles Intl Airport to Niagara Falls is about 346 mi. This flight may include one or multiple stops.

  • 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 ANA (74%), Jazz (73%) and United Airlines (71%).

  • 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 $664, our data indicates the cheapest price to be $107. The most popular route (Washington, D.C. Dulles Intl - Toronto Pearson Intl), is priced around $227.

  • 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 $94). 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.

See more FAQs

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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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Reagan-National to Kingston flights
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Top 4 airlines flying from Dulles Intl to Niagara Falls

Discover the top 4 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 December 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$54Average$237FlexibilityNo cancel feeOn-time52%
Air TransatCheapest$176Average$245FlexibilityNo cancel feeOn-time50%
Air CanadaCheapest$187Average$341FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$251Average$343FlexibilityNo cancel feeOn-time69%

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