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Niagara Falls

$97+ Cheap flights from Dulles Intl (IAD) to Niagara Falls, Canada

IAD — YYZ
Sep 22 — Sep 291
Tue 9/22
Tue 9/29
1 adult, Economy
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Find cheap flights from Dulles Intl to Niagara Falls with Cheapflights

1. Tell us where you want to go

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2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Niagara Falls are usually found in January or September, booked 79 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap flight deals from Dulles Intl to Niagara Falls

Cheapest flights from Dulles Intl to Niagara Falls

Sun 9/209:55 am -
Nonstop1h 25m
Sat 10/36:55 pm -
Nonstop1h 30m
Deal found 8/19$198
Tue 10/209:55 am -
Nonstop1h 25m
Sat 10/246:55 pm -
Nonstop1h 31m
Deal found 8/20$209
Sat 9/124:00 pm -
Nonstop1h 25m
Fri 9/186:55 pm -
Nonstop1h 30m
Deal found 8/20$210
Mon 11/94:30 pm -
Nonstop1h 27m
Wed 11/116:40 pm -
Nonstop1h 30m
Deal found 8/20$211
Sat 9/194:00 pm -
Nonstop1h 25m
Fri 9/256:55 pm -
Nonstop1h 30m
Deal found 8/19$214
Mon 10/194:00 pm -
Nonstop1h 25m
Thu 10/221:55 pm -
Nonstop1h 30m
Deal found 8/21$217
Mon 9/149:55 am -
Nonstop1h 25m
Wed 9/161:55 pm -
Nonstop1h 30m
Deal found 8/17$222
Sat 10/34:00 pm -
Nonstop1h 25m
Mon 10/56:55 pm -
Nonstop1h 30m
Deal found 8/19$229
Mon 8/319:55 am -
Nonstop1h 26m
Tue 9/110:30 am -
1 stop4h 31m
Deal found 8/17$230
Wed 9/168:20 am -
1 stop7h 26m
Wed 9/167:43 pm -
Nonstop1h 41m
Deal found 8/19$231

Find flight deals from Dulles Intl to Niagara Falls

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$198
(Gotogate)

One-way from

$97
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$378
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. 6% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in August 2026
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Cheapflights Fare Finder

 
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Fri 10/2

10:19 pm-11:54 pm

Nonstop1h 35m

Toronto Pearson Intl

Sun 10/4

12:45 pm-2:22 pm

Nonstop1h 37m

$245
Quickest round-trip

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Mon 9/14

10:19 pm-11:54 pm

Nonstop1h 35m

Toronto Pearson Intl

Wed 9/16

6:55 pm-8:25 pm

Nonstop1h 30m

$245

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Fri 9/18

10:19 pm-11:54 pm

Nonstop1h 35m

Toronto Pearson Intl

Sun 9/20

12:45 pm-2:22 pm

Nonstop1h 37m

$245

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Wed 9/16

8:28 am-10:04 am

Nonstop1h 36m

Toronto Pearson Intl

Mon 9/21

7:43 pm-9:24 pm

Nonstop1h 41m

$245

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Fri 10/23

10:19 pm-11:54 pm

Nonstop1h 35m

Toronto Pearson Intl

Sat 10/24

9:44 am-11:21 am

Nonstop1h 37m

$245

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Wed 10/14

10:19 pm-11:54 pm

Nonstop1h 35m

Toronto Pearson Intl

Fri 10/16

8:00 am-3:00 pm

1 stop7h 00m

$254

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Fri 9/11

10:19 pm-11:54 pm

Nonstop1h 35m

Toronto Pearson Intl

Tue 9/15

10:30 am-3:00 pm

1 stop4h 30m

$254

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Sat 9/26

8:33 am-1:47 pm

1 stop5h 14m

Toronto Pearson Intl

Mon 9/28

12:45 pm-2:22 pm

Nonstop1h 37m

$255

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Fri 9/11

10:19 pm-11:54 pm

Nonstop1h 35m

Toronto Pearson Intl

Sun 9/13

7:00 am-11:49 am

1 stop4h 49m

$261

Washington, D.C.Toronto

IAD Washington, D.C. Dulles Intl - YYZ Toronto Pearson Intl

IADYYZ

Washington, D.C. Dulles Intl

Thu 9/10

8:28 am-10:04 am

Nonstop1h 36m

Toronto Pearson Intl

Sun 9/13

7:00 am-11:49 am

1 stop4h 49m

$261

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/21

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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

Cheapflights Insights

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

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

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 20% on your trip compared to booking a flight in the afternoon.

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

The most flights from IAD to NI4 are scheduled on a Friday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).

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

Airfare is below average for this route at the moment.
Washington, D.C. Dulles Intl Airport to Niagara Falls flights typically cost between $286 and $460 in September.
The cheapest round-trip price found within the last 5 days was $198 on Air Canada (Sep 20-Oct 3).

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

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

Reviews of airlines servicing Niagara Falls

Get a feel of what it's like to fly with Porter Airlines,Delta, andUnited Airlines 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
457 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

6.9

Food

7.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Porter Airlines
8.0
Very good
457 reviews
Porter Airlines
8.0
Very good
457 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

6.9

Food

7.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Delta
7.8
Good
8,516 reviews
Porter Airlines
8.0
Very good
457 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

6.9

Food

7.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
United Airlines
7.4
Good
10,114 reviews
Porter Airlines
8.0
Very good
457 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

6.9

Food

7.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Air Canada
7.1
Good
11,519 reviews
Porter Airlines
8.0
Very good
457 reviews

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

6.9

Food

7.6

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

Related info for your journey

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

    For as low as $245, United Airlines can have you in Niagara Falls from Washington, D.C. Dulles Intl Airport in 1h 35m. 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 ANA (79%), United Airlines (74%) and Copa Airlines (69%).

  • 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 $2,290, our data indicates the cheapest price to be $96. The most popular route (Washington, D.C. Dulles Intl - Toronto Pearson Intl), is priced around $245.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Dulles Intl to Niagara Falls

AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$96Average$329FlexibilityNo cancel feeOn-time67%
DeltaCheapest$106Average$254FlexibilityNo cancel feeOn-timeN/A
Porter AirlinesCheapest$128Average$235FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$247Average$420FlexibilityNo cancel feeOn-time69%
Air TransatCheapest$263Average$439FlexibilityNo cancel feeOn-time50%

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