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Niagara Falls

$88+ Cheap flights from Dulles Intl (IAD) to Niagara Falls, 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YYZ
Jul 1 — Jul 81
Tue 7/1
Tue 7/8
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 April or October, 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 June 26, 2025.

Round-trip from

$192
(United Airlines)

One-way from

$88
(United Airlines)

Popular in

June

Cheapest in

April

Average price

$360
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. 7% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 26, 2025.

This United Airlines deal was found by Cheapflights users on 6/26. 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.
Tue 7/226:35 amIAD - YYZ
1 stop5h 14mUnited Airlines
Tue 7/222:30 pmYYZ - IAD
Nonstop1h 40mUnited Airlines
Deal found 6/26$192
This Air Canada deal was found by Cheapflights users on 6/23. 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 7/229:35 amIAD - YYZ
1 stop7h 20mAir Canada
Wed 7/308:10 amYYZ - IAD
Nonstop1h 27mAir Canada
Deal found 6/23$212
This Delta deal was found by Cheapflights users on 6/26. 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 7/225:23 pmIAD - YYZ
1 stop5h 35mDelta
Thu 7/243:55 pmYYZ - IAD
1 stop7h 00mDelta
Deal found 6/26$234
This United deal was found by Cheapflights users on 6/24. 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.
Fri 8/86:35 amIAD - YYZ
1 stop9h 11mMultiple Airlines
Mon 8/118:10 amYYZ - IAD
Nonstop1h 27mMultiple Airlines
Deal found 6/24$291
This Kissandfly.com deal was found by Cheapflights users on 6/25. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/238:22 amIAD - YYZ
Nonstop1h 42mLufthansa
Sat 7/263:00 pmYYZ - IAD
1 stop7h 38mLufthansa
Deal found 6/25$293

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 June 26, 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

Tue 7/22

6:35 am-11:49 am

1 stop5h 14m

Toronto Pearson Intl

Tue 7/22

2:30 pm-4:10 pm

Nonstop1h 40m

$192

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Tue 7/22

9:35 am-4:55 pm

1 stop7h 20m

Toronto Pearson Intl

Wed 7/30

8:10 am-9:37 am

Nonstop1h 27m

$212

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Tue 7/22

5:23 pm-10:58 pm

1 stop5h 35m

Toronto Pearson Intl

Thu 7/24

3:55 pm-10:55 pm

1 stop7h 00m

$234

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Fri 8/8

6:35 am-3:46 pm

1 stop9h 11m

Toronto Pearson Intl

Mon 8/11

8:10 am-9:37 am

Nonstop1h 27m

$291

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Wed 7/23

8:22 am-10:04 am

Nonstop1h 42m

Toronto Pearson Intl

Sat 7/26

3:00 pm-10:38 pm

1 stop7h 38m

$293

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Tue 7/29

8:35 am-1:47 pm

1 stop5h 12m

$88

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Thu 7/24

6:00 am-2:45 pm

1 stop8h 45m

$89

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sun 10/5

10:20 am-11:52 am

Nonstop1h 32m

$91

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Fri 10/24

9:33 pm-2:25 pm

1 stop16h 52m

$135

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Tue 7/1

12:40 pm-11:42 am

1 stop23h 02m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/25

Showing 1-10 of 12 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 June 20, 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Niagara Falls (average of $243). Flying from Washington, D.C. Dulles Intl Airport to Niagara Falls in July is currently the most expensive (average of $349). 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 June 26, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Niagara Falls, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 evenings 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.

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 June 26, 2025.

The most flights from IAD to NI4 are scheduled on a Wednesday (23 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (15 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 June 26, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American 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.
Delta
8.0
Very good
7,964 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,838 reviews
Delta
8.0
Very good
7,964 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,964 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,893 reviews
Delta
8.0
Very good
7,964 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,633 reviews
Delta
8.0
Very good
7,964 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Niagara Falls one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $88. However, be on the lookout for offers from Delta and Air Canada, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Niagara Falls for a low price.

  • 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 Sun Country Air (100%), ANA (93%) and Jazz (83%).

  • 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 $893, our data indicates the cheapest price to be $100. The most popular route (Washington, D.C. Dulles Intl - Toronto Pearson Intl), is priced around $202.

  • 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Niagara Falls (average of $243). Flying from Washington, D.C. Dulles Intl Airport to Niagara Falls in July is currently the most expensive (average of $349). 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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Baltimore to Sault Ste Marie flights
Dulles Intl to Timmins flights
Baltimore to Thunder Bay flights
Baltimore to North Bay flights
Baltimore to Windsor flights
Dulles Intl to Kingston flights
Reagan-National to Kingston flights
Baltimore to Kingston flights

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 June 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$109Average$283FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$132Average$338FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$169Average$310FlexibilityNo cancel feeOn-time50%
United AirlinesCheapest$208Average$344FlexibilityNo cancel feeOn-time69%
WestJetCheapest$278Average$582FlexibilityNo cancel feeOn-time60%

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