$101+ Cheap flights from Dulles Intl (IAD) to Niagara Falls, ON, 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Dulles Intl to Niagara Falls with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 January 12, 2026.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $196 (Flightnetwork) |
One-way from | $101 (Air Canada) |
Popular in | October |
Cheapest in | September |
Average price | $326 |
Find flight deals from Dulles Intl to Niagara Falls
Cheapest flights from Dulles Intl to Niagara FallsExplore 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 January 12, 2026.
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 January 12, 2026.
This Flightnetwork deal was found by Cheapflights users on 1/11. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 1/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Booking.com deal was found by Cheapflights users on 1/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 1/10. 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.
This Air Canada deal was found by Cheapflights users on 1/9. 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.
This Booking.com deal was found by Cheapflights users on 1/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 1/12. 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.
This Mytrip deal was found by Cheapflights users on 1/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
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
Fly to
Route
Depart
Return
Price
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Wed 2/11
12:35 pm-2:14 pm
Nonstop1h 39m
Toronto Pearson Intl
Tue 2/17
7:40 pm-9:21 pm
Nonstop1h 41m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Sun 2/1
10:06 pm-11:46 pm
Nonstop1h 40m
Toronto Pearson Intl
Sun 2/8
7:40 pm-9:25 pm
Nonstop1h 45m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Sat 3/7
10:09 pm-11:46 pm
Nonstop1h 37m
Toronto Pearson Intl
Mon 3/9
7:40 pm-9:21 pm
Nonstop1h 41m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Fri 2/6
10:06 pm-11:46 pm
Nonstop1h 40m
Toronto Pearson Intl
Sun 2/8
7:40 pm-9:25 pm
Nonstop1h 45m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Tue 3/10
12:33 pm-2:14 pm
Nonstop1h 41m
Toronto Pearson Intl
Tue 3/10
7:40 pm-9:21 pm
Nonstop1h 41m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Fri 2/6
10:06 pm-11:46 pm
Nonstop1h 40m
Toronto Pearson Intl
Mon 2/9
7:40 pm-9:25 pm
Nonstop1h 45m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Sun 3/1
10:09 pm-11:46 pm
Nonstop1h 37m
Toronto Pearson Intl
Wed 3/4
7:40 pm-9:21 pm
Nonstop1h 41m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Wed 1/28
10:06 pm-11:46 pm
Nonstop1h 40m
Toronto Pearson Intl
Sun 2/1
10:00 am-11:48 am
Nonstop1h 48m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Sat 3/7
10:09 pm-11:46 pm
Nonstop1h 37m
Toronto Pearson Intl
Tue 3/10
7:40 pm-9:21 pm
Nonstop1h 41m
Washington, D.C.Toronto
IAD - YYZ
IADYYZ
Washington, D.C. Dulles Intl
Mon 1/26
5:16 pm-6:57 pm
Nonstop1h 41m
Toronto Pearson Intl
Thu 1/29
7:40 pm-9:25 pm
Nonstop1h 45m
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.
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 January 9, 2026.
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, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Niagara Falls (average of $94). Flying from Washington, D.C. Dulles Intl Airport to Niagara Falls in August is currently the most expensive (average of $171). 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 January 12, 2026.
A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Niagara Falls at noon. If you’re flexible enough to do this you can expect to save up to 35% on your trip compared to booking a flight in the evening.
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 January 10, 2026.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Niagara Falls flight should consider departing on Sunday mornings when fares are most often at their lowest. Saturday 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 January 12, 2026.
The most flights from IAD to NI4 are scheduled on a Monday (16 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (16 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 January 12, 2026.
Get a feel of what it's like to fly with Porter Airlines, United Airlines, and Air Canada 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.
Boarding
Overall
Crew
Food
Comfort
Entertainment
Reviews
Mohameed,Nov 2025
LAS - YYZ
Boarding
Overall
Crew
Food
Comfort
Entertainment
Reviews
Mohameed,Nov 2025
LAS - YYZ
Boarding
Overall
Crew
Food
Comfort
Entertainment
Reviews
Mohameed,Nov 2025
LAS - YYZ
Boarding
Overall
Crew
Food
Comfort
Entertainment
Reviews
Mohameed,Nov 2025
LAS - YYZ
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.
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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.
Top 4 airlines flying from Dulles Intl to Niagara Falls
Discover the top 4 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 January 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$54 | Average$236 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$176 | Average$245 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$189 | Average$341 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$251 | Average$344 | FlexibilityNo cancel fee | On-time69% |