In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 66.0 - 102.0 mm per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 66.0 mm.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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$ 200. On average you can expect to pay C$ 854. The most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl), can usually be booked for C$ 332.

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: ANA (87%), Republic Airways (84%), Copa Airlines (84%).

What are the most popular airlines that fly from Niagara Falls to Washington, D.C. Dulles Intl Airport?

Before booking your flight from Niagara Falls to Washington, D.C. Dulles Intl Airport check out the most popular airlines for this route: Air Canada, United Airlines or Porter Airlines.

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.

C$ 192+ Cheap Flights from Niagara Falls, ON to Washington, D.C. Dulles Intl Airport

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

Airfare is below average for this route at the moment. Niagara Falls to Washington, D.C. Dulles Intl Airport flights typically cost between C$ 575 and C$ 385 in May. The cheapest round-trip price found within the last 3 days was C$ 280 on Air Canada (28 May-31 May).

Cheapflights Tip: The best prices from Niagara Falls to Washington, D.C. Dulles Intl are usually found in February or June, 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.

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Direct

Last-minute

One-way

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 May 2026.

Thu 28/51:55 p.m.

YYZ

IAD

Nonstop1h 34m

Air Canada

Sun 31/53:45 p.m.

IAD

YYZ

1 stop5h 15m

Air Canada

Deal found 11/5C$ 280

Wed 27/512:45 p.m.

YYZ

IAD

Nonstop1h 36m

United Airlines

Tue 2/66:33 a.m.

IAD

YYZ

1 stop5h 10m

United Airlines

Deal found 11/5C$ 299

Thu 11/66:55 p.m.

YYZ

IAD

Nonstop1h 34m

Air Canada

Mon 15/63:45 p.m.

IAD

YYZ

1 stop6h 13m

Air Canada

Deal found 10/5C$ 304

Tue 23/61:35 p.m.

YYZ

IAD

Nonstop1h 29m

Air Canada

Wed 22/79:55 a.m.

IAD

YYZ

Nonstop1h 26m

Air Canada

Deal found 12/5C$ 314

Fri 4/96:55 p.m.

YYZ

IAD

Nonstop1h 29m

Air Canada

Mon 7/94:20 p.m.

IAD

YYZ

Nonstop1h 30m

Air Canada

Deal found 11/5C$ 315

Fri 5/66:00 a.m.

YYZ

IAD

1 stop6h 18m

Delta

Tue 9/611:05 a.m.

IAD

YYZ

1 stop6h 19m

Delta

Deal found 14/5C$ 320

Sun 24/512:45 p.m.

YYZ

IAD

Nonstop1h 36m

United Airlines

Wed 27/510:14 p.m.

IAD

YYZ

Nonstop1h 40m

United Airlines

Deal found 10/5C$ 324

Find flight deals from Niagara Falls to Dulles Intl

Round-trip from	C$ 280
One-way from	C$ 192
Popular in	July
Cheapest in	February
Average price	C$ 468

Air Canada
28/5-31/5
1 total stop
6h 49m total
Niagara Falls to Washington, D.C.

Search Deals

Air Canada
6/6
1 total stop
4h 33m total
Niagara Falls to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (C$ 24 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 14 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 2026

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Cheapflights Fare Finder

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

Wed 27/5

12:05 p.m.-6:53 p.m.

1 stop6h 48m

Washington, D.C. Dulles Intl

Sat 6/6

6:00 a.m.-11:19 a.m.

1 stop5h 19m

C$ 331

Quickest round-trip

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 27/5

7:30 a.m.-11:28 a.m.

1 stop3h 58m

Washington, D.C. Dulles Intl

Sat 30/5

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

Nonstop1h 40m

C$ 331

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Wed 27/5

6:00 a.m.-12:18 p.m.

1 stop6h 18m

Washington, D.C. Dulles Intl

Sat 30/5

1:32 p.m.-5:47 p.m.

1 stop4h 15m

C$ 331

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 6/6

6:00 a.m.-12:18 p.m.

1 stop6h 18m

Washington, D.C. Dulles Intl

Tue 9/6

11:05 a.m.-5:24 p.m.

1 stop6h 19m

C$ 332

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Tue 9/6

12:00 p.m.-4:35 p.m.

1 stop4h 35m

Washington, D.C. Dulles Intl

Sun 14/6

8:18 a.m.-1:05 p.m.

1 stop4h 47m

C$ 376

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 18/6

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

Nonstop1h 36m

Washington, D.C. Dulles Intl

Sun 21/6

8:18 a.m.-1:08 p.m.

1 stop4h 50m

C$ 377

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Sat 11/7

6:04 a.m.-11:49 a.m.

1 stop5h 45m

Washington, D.C. Dulles Intl

Mon 13/7

5:26 p.m.-11:02 p.m.

1 stop5h 36m

C$ 384

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 25/6

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

1 stop4h 52m

Washington, D.C. Dulles Intl

Tue 30/6

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

Nonstop1h 40m

C$ 409

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Fri 17/7

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

Nonstop1h 43m

Washington, D.C. Dulles Intl

Sat 18/7

10:20 p.m.-9:54 a.m.

1 stop11h 34m

C$ 428

TorontoWashington, D.C.

YYZ - IAD

YYZIAD

Toronto Pearson Intl

Thu 20/8

2:30 p.m.-4:07 p.m.

Nonstop1h 37m

Washington, D.C. Dulles Intl

Sun 23/8

10:35 a.m.-8:44 p.m.

1 stop10h 09m

C$ 429

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 20 resultsSorted by cheapest first

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.

YYZ-IAD

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

NI4-IAD

YYZ-IAD

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

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 24% on the cost of your flight, compared to a flight in the evening.

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

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. Monday at noon 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

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?

Reviews of airlines servicing Dulles Intl

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

8.0

Very good

437 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

Porter Airlines

8.0

Very good

437 reviews

Porter Airlines

8.0

Very good

437 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

United Airlines

7.4

Good

9,715 reviews

Porter Airlines

8.0

Very good

437 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

Air Canada

7.1

Good

11,034 reviews

Porter Airlines

8.0

Very good

437 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

Related info for your journey

How long is the flight from Niagara Falls to Washington, D.C. Dulles Intl Airport?
For as low as C$ 331, Delta can have you in Washington, D.C. Dulles Intl Airport from Niagara Falls in 3h 58m. 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: ANA (87%), Republic Airways (84%), Copa Airlines (84%).
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$ 200. On average you can expect to pay C$ 854. The most popular route, (Toronto Pearson Intl - Washington, D.C. Dulles Intl), can usually be booked for C$ 332.
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.

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Alternative routes

Complete your trip

Direct flights to District of Columbia

Dulles Intl flight routes

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Alternative routes for Niagara Falls to Dulles Intl

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Top 4 airlines flying from Niagara Falls to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Porter Airlines	CheapestC$ 222	AverageC$ 288	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
Air Canada	CheapestC$ 293	AverageC$ 453	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Air Transat	CheapestC$ 295	AverageC$ 514	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
United Airlines	CheapestC$ 326	AverageC$ 406	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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

Cheapflights helps you search for flights from Niagara Falls to Dulles Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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?

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Cheap flights from Niagara Falls, ON to Washington, D.C. Dulles Intl Airport from C$ 192

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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Niagara Falls to Dulles Intl

Cheapest flights from Niagara Falls to Dulles IntlExplore 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 May 2026.

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 May 2026.

Best flights from Niagara Falls to Dulles IntlDiscover carefully curated flight deals from Niagara Falls to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 15 May 2026.

Discover carefully curated flight deals from Niagara Falls to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 15 May 2026.

Direct flights from Niagara Falls to Dulles IntlExplore direct flight options from Niagara Falls to Dulles Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 May 2026.

Explore direct flight options from Niagara Falls to Dulles Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 May 2026.

Last-minute flights from Niagara Falls to Dulles IntlDiscover last-minute flight deals from Niagara Falls to Dulles Intl. Data last updated 15 May 2026 and is based on user searches.

Discover last-minute flight deals from Niagara Falls to Dulles Intl. Data last updated 15 May 2026 and is based on user searches.

One-way flights from Niagara Falls to Dulles IntlSearch for one-way flight options from Niagara Falls to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 15 May 2026.

Search for one-way flight options from Niagara Falls to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 15 May 2026.

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 15 May 2026.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Niagara Falls to Washington, D.C. Dulles Intl Airport that are best for you.

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.

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 15 May 2026.

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 9 May 2026.

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

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

Reviews of airlines servicing Dulles Intl

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?

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

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Niagara Falls to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Dulles Intl by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to District of Columbia

Book a non-stop flight to one of these other cities located in District of Columbia.

Other flights to Dulles Intl

Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 15 May 2026.

Search flights from Niagara Falls to Dulles Intl by cabin class

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Niagara Falls and Dulles Intl flights

Browse other Niagara Falls and Dulles Intl flight options. Last updated on 15 May 2026.

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Niagara Falls to Dulles Intl flights

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Top 4 airlines flying from Niagara Falls to Dulles Intl

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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 May 2026.

Best flights from Niagara Falls to Dulles Intl
Discover carefully curated flight deals from Niagara Falls to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 15 May 2026.

Direct flights from Niagara Falls to Dulles Intl
Explore direct flight options from Niagara Falls to Dulles Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 May 2026.

Last-minute flights from Niagara Falls to Dulles Intl
Discover last-minute flight deals from Niagara Falls to Dulles Intl. Data last updated 15 May 2026 and is based on user searches.

One-way flights from Niagara Falls to Dulles Intl
Search for one-way flight options from Niagara Falls to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 15 May 2026.