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Cheap flights from Niagara Falls to Washington, D.C. Dulles Intl Airport from C$ 174

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 28/11. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — IAD
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Niagara Falls to Washington, D.C. Dulles Intl are usually found in January or May, booked 78 days in advance, depart on a Friday or Saturday and return on a Wednesday

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 15 September 2025.

Round-trip from

C$ 280

One-way from

C$ 174

Popular in

October

Cheapest in

January

Average price

C$ 445
Air Canada
  • Air Canada
  • 7/10-8/10
  • Nonstop
  • 3h 00m total
  • Niagara Falls to Washington, D.C.
Search Deals
Air Canada
  • Air Canada
  • 28/11
  • Nonstop
  • 1h 31m total
  • Niagara Falls to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 53 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Niagara Falls to Dulles Intl

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 15 September 2025.

Tue 7/1012:10 p.m.YYZ - IAD
Nonstop1h 28mAir Canada
Wed 8/1010:20 a.m.IAD - YYZ
Nonstop1h 32mAir Canada
Deal found 15/9C$ 280
Tue 28/102:20 p.m.YYZ - IAD
Nonstop1h 34mAir Canada
Tue 4/119:00 a.m.IAD - YYZ
Nonstop1h 29mAir Canada
Deal found 13/9C$ 287
Wed 12/112:20 p.m.YYZ - IAD
Nonstop1h 31mAir Canada
Fri 14/119:00 a.m.IAD - YYZ
Nonstop1h 29mAir Canada
Deal found 14/9C$ 289
Tue 9/124:00 p.m.YYZ - IAD
1 stop4h 59mAir Canada
Wed 10/129:45 a.m.IAD - YYZ
1 stop4h 55mAir Canada
Deal found 15/9C$ 294
Wed 29/102:45 p.m.YYZ - IAD
Nonstop1h 42mUnited Airlines
Fri 7/1110:11 p.m.IAD - YYZ
Nonstop1h 35mUnited Airlines
Deal found 13/9C$ 300
Sat 8/116:55 p.m.YYZ - IAD
Nonstop1h 31mAir Canada
Tue 11/114:25 p.m.IAD - YYZ
Nonstop1h 33mAir Canada
Deal found 13/9C$ 303
Fri 24/1012:45 p.m.YYZ - IAD
Nonstop1h 40mMultiple Airlines
Sun 26/109:45 a.m.IAD - YYZ
1 stop4h 59mMultiple Airlines
Deal found 14/9C$ 308
Sat 4/102:30 p.m.YYZ - IAD
Nonstop1h 40mUnited Airlines
Sat 11/1010:10 p.m.IAD - YYZ
1 stop11h 48mUnited Airlines
Deal found 13/9C$ 311
Wed 1/1012:45 p.m.YYZ - IAD
Nonstop1h 40mUnited Airlines
Wed 8/1012:41 p.m.IAD - YYZ
Nonstop1h 38mUnited Airlines
Deal found 14/9C$ 312

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 15 September 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 25/10

7:47 p.m.-9:25 p.m.

Nonstop1h 38m

Washington, D.C. Dulles Intl

Sat 1/11

10:11 p.m.-11:46 p.m.

Nonstop1h 35m

C$ 300

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 1/11

7:40 p.m.-9:20 p.m.

Nonstop1h 40m

Washington, D.C. Dulles Intl

Thu 6/11

9:00 a.m.-10:29 a.m.

Nonstop1h 29m

C$ 300

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 16/10

12:45 p.m.-2:25 p.m.

Nonstop1h 40m

Washington, D.C. Dulles Intl

Sun 19/10

8:28 a.m.-10:04 a.m.

Nonstop1h 36m

C$ 300

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 17/10

12:45 p.m.-2:25 p.m.

Nonstop1h 40m

Washington, D.C. Dulles Intl

Sun 19/10

8:28 a.m.-10:04 a.m.

Nonstop1h 36m

C$ 300

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 16/10

10:05 a.m.-11:45 a.m.

Nonstop1h 40m

Washington, D.C. Dulles Intl

Mon 20/10

3:36 p.m.-5:14 p.m.

Nonstop1h 38m

C$ 300

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 23/10

12:45 p.m.-2:25 p.m.

Nonstop1h 40m

Washington, D.C. Dulles Intl

Thu 30/10

9:45 a.m.-3:34 p.m.

1 stop5h 49m

C$ 308

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 27/11

10:00 a.m.-11:45 a.m.

Nonstop1h 45m

Washington, D.C. Dulles Intl

Wed 3/12

9:45 a.m.-4:40 p.m.

1 stop6h 55m

C$ 308

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 10/10

12:45 p.m.-2:25 p.m.

Nonstop1h 40m

Washington, D.C. Dulles Intl

Sat 11/10

5:12 p.m.-10:23 p.m.

1 stop5h 11m

C$ 314

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 23/10

2:30 p.m.-4:10 p.m.

Nonstop1h 40m

Washington, D.C. Dulles Intl

Fri 7/11

8:45 a.m.-1:43 p.m.

1 stop4h 58m

C$ 314

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 17/10

12:45 p.m.-2:25 p.m.

Nonstop1h 40m

Washington, D.C. Dulles Intl

Tue 21/10

6:15 a.m.-11:44 a.m.

1 stop5h 29m

C$ 314

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/9

Showing 1-10 of 20 results
1
2

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 12 September 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 78 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$ 256). Flying from Niagara Falls to Washington, D.C. Dulles Intl Airport in October is currently the most expensive (average of C$ 352). 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 15 September 2025.

When flying from Niagara Falls to Washington, D.C. Dulles Intl Airport, 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 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 afternoons 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 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 15 September 2025.

The most flights from NI4 to IAD are scheduled on a Monday (18 on average). You will have fewer flight options on Saturday, 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 15 September 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
7.9
Good
363 reviews
Check prices

Overall

7.9

Food

7.6

Comfort

7.9

Boarding

8.1

Entertainment

7.0

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
7.9
Good
363 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Overall

7.9

Food

7.6

Comfort

7.9

Boarding

8.1

Entertainment

7.0

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 Transat
7.7
Good
438 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Overall

7.9

Food

7.6

Comfort

7.9

Boarding

8.1

Entertainment

7.0

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
8,929 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Overall

7.9

Food

7.6

Comfort

7.9

Boarding

8.1

Entertainment

7.0

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
3,091 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Overall

7.9

Food

7.6

Comfort

7.9

Boarding

8.1

Entertainment

7.0

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
10,000 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Overall

7.9

Food

7.6

Comfort

7.9

Boarding

8.1

Entertainment

7.0

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 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$ 300, United Airlines can have you in Washington, D.C. Dulles Intl Airport from Niagara Falls in 1h 38m. The distance between Niagara Falls and Washington, D.C. Dulles Intl Airport is about 557 km. Generally, flights for this route are direct.

  • 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: Republic Airways (86%), Air Canada (83%), Copa Airlines (80%).

  • 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$ 236. On average you can expect to pay C$ 1,094. The most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl), can usually be booked for C$ 300.

  • 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$ 256). Flying from Niagara Falls to Washington, D.C. Dulles Intl Airport in October is currently the most expensive (average of C$ 352). 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
Herndon
Warrenton
Hanover
Reston
Fairfax
Ellicott City
Oxon Hill
Gaithersburg
Winchester
Arlington
Alexandria
Manassas
Fredericksburg
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 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapestC$ 204AverageC$ 351FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Porter AirlinesCheapestC$ 213AverageC$ 302FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 263AverageC$ 398FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 269AverageC$ 427FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 431AverageC$ 609FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Niagara Falls to Dulles Intl?

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Why should you use Cheapflights to find cheap flight tickets from Niagara Falls to Dulles Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Niagara Falls to Dulles Intl.

Can Cheapflights find flights from Niagara Falls to Dulles Intl with no change fees?

Yes! Cheapflights helps users easily find flights from Niagara Falls to Dulles Intl with no change fees.

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Of course! You can now track prices for flights from Niagara Falls to Dulles Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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