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Cheap flights from Niagara Falls, ON to Washington, D.C. Dulles Intl Airport from C$ 190

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 13/8. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — IAD
2 Aug — 9 Aug1
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 February or March, booked 44 days in advance, depart on a Friday or Saturday and return on a Sunday

Cheap 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 3 July 2026.

Fri 28/86:55 p.m.
YYZ
-
IAD
Nonstop1h 29m
Air Canada
Mon 31/89:45 a.m.
IAD
-
YYZ
1 stop4h 50m
Air Canada
Deal found 2/7C$ 300
Tue 6/101:55 p.m.
YYZ
-
IAD
Nonstop1h 30m
Air Canada
Wed 7/109:55 a.m.
IAD
-
YYZ
Nonstop1h 25m
Air Canada
Deal found 2/7C$ 319
Tue 11/81:55 p.m.
YYZ
-
IAD
Nonstop1h 29m
Air Canada
Tue 18/89:55 a.m.
IAD
-
YYZ
Nonstop1h 26m
Air Canada
Deal found 2/7C$ 326
Fri 17/71:55 p.m.
YYZ
-
IAD
Nonstop1h 29m
Air Canada
Sun 19/74:20 p.m.
IAD
-
YYZ
Nonstop1h 30m
Air Canada
Deal found 3/7C$ 328
Wed 16/910:30 a.m.
YYZ
-
IAD
1 stop4h 30m
Air Canada
Wed 23/99:55 a.m.
IAD
-
YYZ
Nonstop1h 25m
Air Canada
Deal found 3/7C$ 331
Tue 6/107:43 p.m.
YYZ
-
IAD
Nonstop1h 41m
United Airlines
Wed 7/106:10 a.m.
IAD
-
YYZ
1 stop9h 36m
United Airlines
Deal found 30/6C$ 332
Thu 27/82:00 p.m.
YYZ
-
IAD
1 stop5h 01m
Air Canada
Mon 31/89:45 a.m.
IAD
-
YYZ
1 stop4h 50m
Air Canada
Deal found 2/7C$ 336
Thu 16/71:55 p.m.
YYZ
-
IAD
Nonstop1h 29m
Air Canada
Mon 20/74:20 p.m.
IAD
-
YYZ
Nonstop1h 30m
Air Canada
Deal found 28/6C$ 342
Thu 16/71:55 p.m.
YYZ
-
IAD
Nonstop1h 29m
Air Canada
Sun 19/74:20 p.m.
IAD
-
YYZ
Nonstop1h 30m
Air Canada
Deal found 2/7C$ 346
Tue 21/72:00 p.m.
YYZ
-
IAD
1 stop5h 01m
Air Canada
Tue 28/74:20 p.m.
IAD
-
YYZ
Nonstop1h 30m
Air Canada
Deal found 30/6C$ 353
Tue 1/910:30 a.m.
YYZ
-
IAD
1 stop4h 31m
Air Canada
Tue 8/99:45 a.m.
IAD
-
YYZ
1 stop4h 48m
Air Canada
Deal found 2/7C$ 355

Find 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 3 July 2026.

Round-trip from

C$ 300

One-way from

C$ 190

Popular in

July

Cheapest in

February

Average price

C$ 535
Air Canada
  • Air Canada
  • 28/8-31/8
  • 1 total stop
  • 6h 19m total
  • Niagara Falls to Washington, D.C.
Search Deals
Air Canada
  • Air Canada
  • 13/8
  • Nonstop
  • 1h 29m total
  • Niagara Falls to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 3 July 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 6/10

9:44 a.m.-11:21 a.m.

Nonstop1h 37m

Washington, D.C. Dulles Intl

Wed 7/10

8:33 a.m.-1:47 p.m.

1 stop5h 14m

C$ 424

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 4/9

12:45 p.m.-2:22 p.m.

Nonstop1h 37m

Washington, D.C. Dulles Intl

Sun 6/9

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

Nonstop1h 36m

C$ 443

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 16/7

2:30 p.m.-4:13 p.m.

Nonstop1h 43m

Washington, D.C. Dulles Intl

Sat 18/7

5:15 p.m.-7:02 p.m.

Nonstop1h 47m

C$ 463

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 16/7

2:30 p.m.-4:13 p.m.

Nonstop1h 43m

Washington, D.C. Dulles Intl

Sun 19/7

10:14 p.m.-11:54 p.m.

Nonstop1h 40m

C$ 464

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 4/8

9:00 p.m.-9:24 a.m.

1 stop12h 24m

Washington, D.C. Dulles Intl

Tue 11/8

1:13 p.m.-8:44 p.m.

1 stop7h 31m

C$ 471

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sun 20/9

7:00 a.m.-11:49 a.m.

1 stop4h 49m

Washington, D.C. Dulles Intl

Sat 26/9

9:55 a.m.-11:20 a.m.

Nonstop1h 25m

C$ 477
Quickest round-trip

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 16/7

12:45 p.m.-2:21 p.m.

Nonstop1h 36m

Washington, D.C. Dulles Intl

Mon 20/7

4:20 p.m.-5:50 p.m.

Nonstop1h 30m

C$ 491

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Mon 27/7

12:45 p.m.-2:21 p.m.

Nonstop1h 36m

Washington, D.C. Dulles Intl

Wed 29/7

10:14 p.m.-11:54 p.m.

Nonstop1h 40m

C$ 500

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 14/7

12:09 p.m.-4:41 p.m.

1 stop4h 32m

Washington, D.C. Dulles Intl

Fri 17/7

6:00 a.m.-1:34 p.m.

1 stop7h 34m

C$ 508

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sun 23/8

7:00 a.m.-11:52 a.m.

1 stop4h 52m

Washington, D.C. Dulles Intl

Sat 29/8

1:10 p.m.-8:44 p.m.

1 stop7h 34m

C$ 508

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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

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 3 July 2026.

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 22% on the cost of your flight, compared to a flight in the evening.

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 3 July 2026.

The most flights from NI4 to IAD are scheduled on a Monday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 on average).

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

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 27 June 2026.

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

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 3 July 2026.
Read reviews from past customers who have flown Porter Airlines,United Airlines, andAir Canada 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
442 reviews
Check prices

Crew

8.6

Boarding

8.2

Overall

7.9

Entertainment

6.9

Food

7.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Porter Airlines
7.9
Good
442 reviews
Porter Airlines
7.9
Good
442 reviews
Check prices

Crew

8.6

Boarding

8.2

Overall

7.9

Entertainment

6.9

Food

7.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
United Airlines
7.4
Good
9,929 reviews
Porter Airlines
7.9
Good
442 reviews
Check prices

Crew

8.6

Boarding

8.2

Overall

7.9

Entertainment

6.9

Food

7.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Air Canada
7.1
Good
11,291 reviews
Porter Airlines
7.9
Good
442 reviews
Check prices

Crew

8.6

Boarding

8.2

Overall

7.9

Entertainment

6.9

Food

7.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.

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$ 424, United Airlines can have you in Washington, D.C. Dulles Intl Airport from Niagara Falls in 1h 37m. 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 (91%), Copa Airlines (89%), Air Canada (89%).

  • 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$ 231. On average you can expect to pay C$ 525. The most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl), can usually be booked for C$ 358.

  • 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.

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
Silver Spring
Warrenton
Winchester
Hanover
Fairfax
Oxon Hill
Gaithersburg
Chantilly
Reston
Herndon
Arlington
Ellicott City
Fredericksburg
Alexandria
Rockville

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Niagara Falls to Dulles Intl

Discover the top 4 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 3 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 129AverageC$ 414FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 229AverageC$ 302FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air TransatCheapestC$ 305AverageC$ 614FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
United AirlinesCheapestC$ 346AverageC$ 437FlexibilityNo cancel feeOn-time69%
Search United Airlines 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.

Can Cheapflights notify me if prices for flights from Niagara Falls to Dulles Intl become cheaper?

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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