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Cheap flights from Niagara Falls, ON to Washington, D.C. Dulles Intl Airport from C$ 186

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 13/12. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — IAD
6 Dec — 13 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Niagara Falls to Washington, D.C. Dulles Intl are usually found in January or May, booked 61 days in advance, depart on a Friday or Saturday and return on a Sunday

Cheap flight deals from Niagara Falls to Dulles Intl

Keep the following information in mind while searching for Niagara Falls to Dulles Intl flight deals. Data was last updated 6 November 2025.

Round-trip from

C$ 285

One-way from

C$ 186

Popular in

October

Cheapest in

January

Average price

C$ 401
Air Canada
  • Air Canada
  • 6/12-13/12
  • Nonstop
  • 3h 04m total
  • Niagara Falls to Washington, D.C.
Search Deals
Air Canada
  • Air Canada
  • 13/12
  • 1 total stop
  • 4h 59m total
  • Niagara Falls to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 70 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Niagara Falls to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Niagara Falls to Dulles Intl
Explore the most affordable flight options available from Niagara Falls to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 November 2025.

Sat 6/126:55 p.m.YYZ - IAD
Nonstop1h 31mAir Canada
Sat 13/124:30 p.m.IAD - YYZ
Nonstop1h 33mAir Canada
Deal found 6/11C$ 285
Sat 6/122:15 p.m.YYZ - IAD
Nonstop1h 31mAir Canada
Tue 30/129:00 a.m.IAD - YYZ
Nonstop1h 29mAir Canada
Deal found 5/11C$ 286
Wed 26/114:10 p.m.YYZ - IAD
1 stop5h 12mAir Canada
Sat 29/111:20 p.m.IAD - YYZ
1 stop5h 30mAir Canada
Deal found 4/11C$ 300
Wed 3/126:55 p.m.YYZ - IAD
Nonstop1h 31mAir Canada
Sat 13/124:30 p.m.IAD - YYZ
Nonstop1h 33mAir Canada
Deal found 6/11C$ 305
Thu 27/112:15 p.m.YYZ - IAD
Nonstop1h 31mAir Canada
Sat 13/129:00 a.m.IAD - YYZ
Nonstop1h 29mAir Canada
Deal found 4/11C$ 306
Wed 3/126:55 p.m.YYZ - IAD
Nonstop1h 31mAir Canada
Wed 10/129:00 a.m.IAD - YYZ
Nonstop1h 29mAir Canada
Deal found 5/11C$ 308
Wed 19/112:15 p.m.YYZ - IAD
Nonstop1h 31mAir Canada
Wed 10/129:00 a.m.IAD - YYZ
Nonstop1h 29mAir Canada
Deal found 6/11C$ 330
Sat 6/127:10 a.m.YYZ - IAD
1 stop13h 14mMultiple Airlines
Sun 7/129:20 p.m.IAD - YYZ
1 stop22h 40mMultiple Airlines
Deal found 6/11C$ 332

Cheapflights Fare Finder

 
Customize your flight search to find flights from Niagara Falls to Dulles Intl 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 629,999 searches. Data last updated 6 November 2025.
Use the filters below to find and compare flights from Niagara Falls to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Niagara Falls

Fly to

Dulles Intl

Route

Depart

Return

Price

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 6/12

4:00 p.m.-8:59 p.m.

1 stop4h 59m

Washington, D.C. Dulles Intl

Mon 15/12

4:30 p.m.-6:03 p.m.

Nonstop1h 33m

C$ 343

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 20/11

6:20 a.m.-11:23 a.m.

1 stop5h 03m

Washington, D.C. Dulles Intl

Thu 27/11

5:50 p.m.-12:04 a.m.

1 stop6h 14m

C$ 343

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 14/4

2:05 p.m.-3:39 p.m.

Nonstop1h 34m

Washington, D.C. Dulles Intl

Fri 17/4

4:30 p.m.-5:57 p.m.

Nonstop1h 27m

C$ 346

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 17/1

7:40 a.m.-11:47 a.m.

1 stop4h 07m

Washington, D.C. Dulles Intl

Thu 22/1

12:32 p.m.-7:08 p.m.

1 stop6h 36m

C$ 350

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 3/12

6:00 a.m.-11:39 a.m.

1 stop5h 39m

Washington, D.C. Dulles Intl

Sat 13/12

6:00 a.m.-11:25 a.m.

1 stop5h 25m

C$ 350

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 10/1

12:10 p.m.-4:46 p.m.

1 stop4h 36m

Washington, D.C. Dulles Intl

Sat 17/1

6:00 a.m.-11:20 a.m.

1 stop5h 20m

C$ 350

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 6/2

7:45 a.m.-11:52 a.m.

1 stop4h 07m

Washington, D.C. Dulles Intl

Thu 12/2

12:32 p.m.-7:08 p.m.

1 stop6h 36m

C$ 350

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 14/1

7:45 a.m.-11:47 a.m.

1 stop4h 02m

Washington, D.C. Dulles Intl

Tue 20/1

5:26 p.m.-10:42 p.m.

1 stop5h 16m

C$ 350

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 25/2

7:45 a.m.-11:52 a.m.

1 stop4h 07m

Washington, D.C. Dulles Intl

Sat 28/2

6:00 a.m.-11:20 a.m.

1 stop5h 20m

C$ 350

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sun 15/2

7:45 a.m.-4:30 p.m.

1 stop8h 45m

Washington, D.C. Dulles Intl

Thu 19/2

12:32 p.m.-7:08 p.m.

1 stop6h 36m

C$ 350

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Niagara Falls 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 Niagara Falls to Washington, D.C. Dulles Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Niagara Falls to Dulles Intl. Price data was last updated on 31 October 2025.

To ensure you get the cheapest price possible for a flight from Niagara Falls to Washington, D.C. Dulles Intl Airport, you should look to book at least 61 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from Niagara Falls to Washington, D.C. Dulles Intl Airport (average of C$ 186). Flying from Niagara Falls to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of C$ 264). 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 NI4 to IAD?

Find hourly flight availability from Niagara Falls to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 6 November 2025.

It’s optimal to fly from Niagara Falls to Washington, D.C. Dulles Intl Airport in the morning. By choosing this option you can save up to 32% on the cost of your flight, compared to a flight in the afternoon.

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

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

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

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

Explore weekly flight availability from Niagara Falls to Dulles Intl. 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 6 November 2025.

The most flights from NI4 to IAD are scheduled on a Monday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (15 on average).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated 6 November 2025.
Read reviews from past customers who have flown Porter Airlines,Air Transat, andUnited Airlines from Niagara Falls to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
387 reviews
Check prices

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Porter Airlines
8.0
Very good
387 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Air Transat
7.8
Good
470 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
United Airlines
7.4
Good
9,007 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
WestJet
7.2
Good
3,155 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Air Canada
7.1
Good
10,416 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Crew

8.6

Food

7.6

Overall

8.0

Boarding

8.2

Entertainment

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.

Related info for your journey

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

    For as low as C$ 350, Air Canada can have you in Washington, D.C. Dulles Intl Airport from Niagara Falls in 4h 07m. The distance between Niagara Falls and Washington, D.C. Dulles Intl Airport is about 557 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Niagara Falls to Washington, D.C. Dulles Intl Airport on time: Avianca (94%), Republic Airways (93%), Copa Airlines (92%).

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

    The cheapest flight price from Niagara Falls to Washington, D.C. Dulles Intl Airport is C$ 207. On average you can expect to pay C$ 1,427. The most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl), can usually be booked for C$ 319.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Niagara Falls to Dulles Intl 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 Niagara Falls to Washington, D.C. Dulles Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from Niagara Falls to Washington, D.C. Dulles Intl Airport (average of C$ 186). Flying from Niagara Falls to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of C$ 264). 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

Travelling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Warrenton
Hanover
Fairfax
Reston
Ellicott City
Oxon Hill
Gaithersburg
Herndon
Arlington
Winchester
Manassas
Fredericksburg
Alexandria
Rockville

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Top 5 airlines flying from Niagara Falls to Dulles Intl

Discover the top 5 airlines that operate flights from Niagara Falls to Dulles Intl. 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 629,999 searches. Data last updated 6 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapestC$ 214AverageC$ 359FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Porter AirlinesCheapestC$ 217AverageC$ 302FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 264AverageC$ 410FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 266AverageC$ 425FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 421AverageC$ 620FlexibilityNo cancel feeOn-time60%
Search WestJet flights

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